Extend L1Tx TxID tests for js checks

2026-02-07 11:26:44 +01:00 · 2021-02-23 16:27:05 +01:00
126 changed files with 2741 additions and 6523 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1 +0,0 @@
-bin/
--- a/135
+++ b/135
@@ -1,135 +0,0 @@
-#! /usr/bin/make -f
-
-# Project variables.
-PACKAGE := github.com/hermeznetwork/hermez-node
-VERSION := $(shell git describe --tags --always)
-BUILD := $(shell git rev-parse --short HEAD)
-BUILD_DATE := $(shell date +%Y-%m-%dT%H:%M:%S%z)
-PROJECT_NAME := $(shell basename "$(PWD)")
-
-# Go related variables.
-GO_FILES ?= $$(find . -name '*.go' | grep -v vendor)
-GOBASE := $(shell pwd)
-GOBIN := $(GOBASE)/bin
-GOPKG := $(.)
-GOENVVARS := GOBIN=$(GOBIN)
-GOCMD := $(GOBASE)/cli/node
-GOPROOF := $(GOBASE)/test/proofserver/cli
-GOBINARY := node
-
-# Project configs.
-MODE ?= sync
-CONFIG ?= $(GOBASE)/cli/node/cfg.buidler.toml
-POSTGRES_PASS ?= yourpasswordhere
-
-# Use linker flags to provide version/build settings.
-LDFLAGS=-ldflags "-X=main.Version=$(VERSION) -X=main.Build=$(BUILD) -X=main.Date=$(BUILD_DATE)"
-
-# PID file will keep the process id of the server.
-PID_PROOF_MOCK := /tmp/.$(PROJECT_NAME).proof.pid
-
-# Make is verbose in Linux. Make it silent.
-MAKEFLAGS += --silent
-
-.PHONY: help
-help: Makefile
-	@echo
-	@echo " Choose a command run in "$(PROJECT_NAME)":"
-	@echo
-	@sed -n 's/^##//p' $< | column -t -s ':' |  sed -e 's/^/ /'
-	@echo
-
-## test: Run the application check and all tests.
-test: govet gocilint test-unit
-
-## test-unit: Run all unit tests.
-test-unit:
-	@echo "  >  Running unit tests"
-	$(GOENVVARS) go test -race -p 1 -failfast -timeout 300s -v ./...
-
-## test-api-server: Run the API server using the Go tests.
-test-api-server:
-	@echo "  >  Running unit tests"
-	$(GOENVVARS) FAKE_SERVER=yes go test -timeout 0 ./api -p 1 -count 1 -v
-
-## gofmt: Run `go fmt` for all go files.
-gofmt:
-	@echo "  >  Format all go files"
-	$(GOENVVARS) gofmt -w ${GO_FILES}
-
-## govet: Run go vet.
-govet:
-	@echo "  >  Running go vet"
-	$(GOENVVARS) go vet ./...
-
-## golint: Run default golint.
-golint:
-	@echo "  >  Running golint"
-	$(GOENVVARS) golint -set_exit_status ./...
-
-## gocilint: Run Golang CI Lint.
-gocilint:
-	@echo "  >  Running Golang CI Lint"
-	$-golangci-lint run --timeout=5m -E whitespace -E gosec -E gci -E misspell -E gomnd -E gofmt -E goimports -E golint --exclude-use-default=false --max-same-issues 0
-
-## exec: Run given command. e.g; make exec run="go test ./..."
-exec:
-	GOBIN=$(GOBIN) $(run)
-
-## clean: Clean build files. Runs `go clean` internally.
-clean:
-	@-rm $(GOBIN)/ 2> /dev/null
-	@echo "  >  Cleaning build cache"
-	$(GOENVVARS) go clean
-
-## build: Build the project.
-build: install
-	@echo "  >  Building Hermez binary..."
-	@bash -c "$(MAKE) migration-pack"
-	$(GOENVVARS) go build $(LDFLAGS) -o $(GOBIN)/$(GOBINARY) $(GOCMD)
-	@bash -c "$(MAKE) migration-clean"
-
-## install: Install missing dependencies. Runs `go get` internally. e.g; make install get=github.com/foo/bar
-install:
-	@echo "  >  Checking if there is any missing dependencies..."
-	$(GOENVVARS) go get $(GOCMD)/... $(get)
-
-## run: Run Hermez node.
-run:
-	@bash -c "$(MAKE) clean build"
-	@echo "  >  Running $(PROJECT_NAME)"
-	@$(GOBIN)/$(GOBINARY) --mode $(MODE) --cfg $(CONFIG) run
-
-## run-proof-mock: Run proof server mock API.
-run-proof-mock: stop-proof-mock
-	@echo "  >  Running Proof Server Mock"
-	$(GOENVVARS) go build -o $(GOBIN)/proof $(GOPROOF)
-	@$(GOBIN)/proof 2>&1 & echo $$! > $(PID_PROOF_MOCK)
-	@cat $(PID_PROOF_MOCK) | sed "/^/s/^/  \>  Proof Server Mock PID: /"
-
-## stop-proof-mock: Stop proof server mock API.
-stop-proof-mock:
-	@-touch $(PID_PROOF_MOCK)
-	@-kill -s INT `cat $(PID_PROOF_MOCK)` 2> /dev/null || true
-	@-rm $(PID_PROOF_MOCK) $(GOBIN)/proof 2> /dev/null || true
-
-## migration-pack: Pack the database migrations into the binary.
-migration-pack:
-	@echo "  >  Packing the migrations..."
-	@cd /tmp && go get -u github.com/gobuffalo/packr/v2/packr2 && cd -
-	@cd $(GOBASE)/db && packr2 && cd -
-
-## migration-clean: Clean the database migrations pack.
-migration-clean:
-	@echo "  >  Cleaning the migrations..."
-	@cd $(GOBASE)/db && packr2 clean && cd -
-
-## run-database-container: Run the Postgres container
-run-database-container:
-	@echo "  >  Running the postgreSQL DB..."
-	@-docker run --rm --name hermez-db -p 5432:5432 -e POSTGRES_DB=hermez -e POSTGRES_USER=hermez -e POSTGRES_PASSWORD="$(POSTGRES_PASS)" -d postgres
-
-## stop-database-container: Stop the Postgres container
-stop-database-container:
-	@echo "  >  Stopping the postgreSQL DB..."
-	@-docker stop hermez-db
--- a/README.md
+++ b/README.md
@@ -8,75 +8,42 @@ Go implementation of the Hermez node.

 The `hermez-node` has been tested with go version 1.14

-### Build
-
-Build the binary and check the current version:
-
-```shell
-$ make build
-$ bin/node version
-```
-
-### Run
-
-First you must edit the default/template config file into [cli/node/cfg.buidler.toml](cli/node/cfg.buidler.toml), 
-there are more information about the config file into [cli/node/README.md](cli/node/README.md)
-
-After setting the config, you can build and run the Hermez Node as a synchronizer:
-
-```shell
-$ make run
-```
-
-Or build and run as a coordinator, and also passing the config file from other location:
-
-```shell
-$ MODE=sync CONFIG=cli/node/cfg.buidler.toml make run
-```
-
-To check the useful make commands:
-
-```shell
-$ make help
-```
-
 ### Unit testing

 Running the unit tests requires a connection to a PostgreSQL database.  You can
-run PostgreSQL with docker easily this way (where `yourpasswordhere` should
+start PostgreSQL with docker easily this way (where `yourpasswordhere` should
 be your password):

-```shell
-$ POSTGRES_PASS="yourpasswordhere" make run-database-container
+```
+POSTGRES_PASS=yourpasswordhere sudo docker run --rm --name hermez-db-test -p 5432:5432 -e POSTGRES_DB=hermez -e POSTGRES_USER=hermez -e POSTGRES_PASSWORD="$POSTGRES_PASS" -d postgres
 ```

-Afterward, run the tests with the password as env var:
+Afterwards, run the tests with the password as env var:

-```shell
-$ POSTGRES_PASS="yourpasswordhere" make test
+```
+POSTGRES_PASS=yourpasswordhere go test -p 1 ./...
 ```

-NOTE: `-p 1` forces execution of package test in serial. Otherwise, they may be
-executed in parallel, and the test may find unexpected entries in the SQL database
+NOTE: `-p 1` forces execution of package test in serial.  Otherwise they may be
+executed in paralel and the test may find unexpected entries in the SQL databse
 because it's shared among all tests.

-There is an extra temporary option that allows you to run the API server using the 
-Go tests. It will be removed once the API can be properly initialized with data 
-from the synchronizer. To use this, run:
+There is an extra temporary option that allows you to run the API server using
+the Go tests. This will be removed once the API can be properly initialized,
+with data from the synchronizer and so on. To use this, run:

-```shell
-$ POSTGRES_PASS="yourpasswordhere" make test-api-server
+```
+FAKE_SERVER=yes POSTGRES_PASS=yourpasswordhere go test -timeout 0  ./api -p 1 -count 1 -v`
 ```

 ### Lint

 All Pull Requests need to pass the configured linter.

-To run the linter locally, first, install [golangci-lint](https://golangci-lint.run).  
-Afterward, you can check the lints with this command:
+To run the linter locally, first install [golangci-lint](https://golangci-lint.run).  Afterwards you can check the lints with this command:

-```shell
-$ make gocilint
+```
+golangci-lint run --timeout=5m -E whitespace -E gosec -E gci -E misspell -E gomnd -E gofmt -E goimports -E golint --exclude-use-default=false --max-same-issues 0
 ```

 ## Usage
@@ -87,13 +54,13 @@ See [cli/node/README.md](cli/node/README.md)

 ### Proof Server

-The node in mode coordinator requires a proof server (a server capable of 
-calculating proofs from the zkInputs). There is a mock proof server CLI 
-at `test/proofserver/cli` for testing purposes.
+The node in mode coordinator requires a proof server (a server that is capable
+of calculating proofs from the zkInputs). For testing purposes there is a mock
+proof server cli at `test/proofserver/cli`.

 Usage of `test/proofserver/cli`:

-```shell
+```
 USAGE:
    go run ./test/proofserver/cli OPTIONS

@@ -104,19 +71,11 @@ OPTIONS:
        proving time duration (default 2s)
 ```

-Also, the Makefile commands can be used to run and stop the proof server 
-in the background:
-
-```shell
-$ make run-proof-mock
-$ make stop-proof-mock
-```
-
 ### `/tmp` as tmpfs

 For every processed batch, the node builds a temporary exit tree in a key-value
 DB stored in `/tmp`.  It is highly recommended that `/tmp` is mounted as a RAM
-file system in production to avoid unnecessary reads a writes to disk.  This
+file system in production to avoid unecessary reads an writes to disk.  This
 can be done by mounting `/tmp` as tmpfs; for example, by having this line in
 `/etc/fstab`:
 ```
--- a/api/account.go
+++ b/api/account.go
@@ -44,7 +44,7 @@ func (a *API) getAccounts(c *gin.Context) {
 		return
 	}

-	// Build successful response
+	// Build succesfull response
 	type accountResponse struct {
 		Accounts     []historydb.AccountAPI `json:"accounts"`
 		PendingItems uint64                 `json:"pendingItems"`
--- a/api/accountcreationauths.go
+++ b/api/accountcreationauths.go
@@ -47,7 +47,7 @@ func (a *API) getAccountCreationAuth(c *gin.Context) {
 		retSQLErr(err, c)
 		return
 	}
-	// Build successful response
+	// Build succesfull response
 	c.JSON(http.StatusOK, auth)
 }

--- a/api/api.go
+++ b/api/api.go
@@ -2,19 +2,39 @@ package api

 import (
 	"errors"
+	"sync"

 	ethCommon "github.com/ethereum/go-ethereum/common"
 	"github.com/gin-gonic/gin"
+	"github.com/hermeznetwork/hermez-node/common"
 	"github.com/hermeznetwork/hermez-node/db/historydb"
 	"github.com/hermeznetwork/hermez-node/db/l2db"
 	"github.com/hermeznetwork/tracerr"
 )

+// TODO: Add correct values to constants
+const (
+	createAccountExtraFeePercentage         float64 = 2
+	createAccountInternalExtraFeePercentage float64 = 2.5
+)
+
+// Status define status of the network
+type Status struct {
+	sync.RWMutex
+	Network           Network                       `json:"network"`
+	Metrics           historydb.Metrics             `json:"metrics"`
+	Rollup            historydb.RollupVariablesAPI  `json:"rollup"`
+	Auction           historydb.AuctionVariablesAPI `json:"auction"`
+	WithdrawalDelayer common.WDelayerVariables      `json:"withdrawalDelayer"`
+	RecommendedFee    common.RecommendedFee         `json:"recommendedFee"`
+}
+
 // API serves HTTP requests to allow external interaction with the Hermez node
 type API struct {
 	h             *historydb.HistoryDB
 	cg            *configAPI
 	l2            *l2db.L2DB
+	status        Status
 	chainID       uint16
 	hermezAddress ethCommon.Address
 }
@@ -25,6 +45,7 @@ func NewAPI(
 	server *gin.Engine,
 	hdb *historydb.HistoryDB,
 	l2db *l2db.L2DB,
+	config *Config,
 ) (*API, error) {
 	// Check input
 	// TODO: is stateDB only needed for explorer endpoints or for both?
@@ -34,20 +55,18 @@ func NewAPI(
 	if explorerEndpoints && hdb == nil {
 		return nil, tracerr.Wrap(errors.New("cannot serve Explorer endpoints without HistoryDB"))
 	}
-	consts, err := hdb.GetConstants()
-	if err != nil {
-		return nil, err
-	}
+
 	a := &API{
 		h: hdb,
 		cg: &configAPI{
-			RollupConstants:   *newRollupConstants(consts.Rollup),
-			AuctionConstants:  consts.Auction,
-			WDelayerConstants: consts.WDelayer,
+			RollupConstants:   *newRollupConstants(config.RollupConstants),
+			AuctionConstants:  config.AuctionConstants,
+			WDelayerConstants: config.WDelayerConstants,
 		},
 		l2:            l2db,
-		chainID:       consts.ChainID,
-		hermezAddress: consts.HermezAddress,
+		status:        Status{},
+		chainID:       config.ChainID,
+		hermezAddress: config.HermezAddress,
 	}

 	// Add coordinator endpoints
--- a/api/api_test.go
+++ b/api/api_test.go
@@ -8,7 +8,6 @@ import (
 	"io"
 	"io/ioutil"
 	"math/big"
-	"net"
 	"net/http"
 	"os"
 	"strconv"
@@ -24,7 +23,6 @@ import (
 	"github.com/hermeznetwork/hermez-node/db/historydb"
 	"github.com/hermeznetwork/hermez-node/db/l2db"
 	"github.com/hermeznetwork/hermez-node/log"
-	"github.com/hermeznetwork/hermez-node/stateapiupdater"
 	"github.com/hermeznetwork/hermez-node/test"
 	"github.com/hermeznetwork/hermez-node/test/til"
 	"github.com/hermeznetwork/hermez-node/test/txsets"
@@ -40,8 +38,8 @@ type Pendinger interface {
 	New() Pendinger
 }

-const apiAddr = ":4010"
-const apiURL = "http://localhost" + apiAddr + "/"
+const apiPort = ":4010"
+const apiURL = "http://localhost" + apiPort + "/"

 var SetBlockchain = `
 	Type: Blockchain
@@ -181,13 +179,12 @@ type testCommon struct {
 	auctionVars      common.AuctionVariables
 	rollupVars       common.RollupVariables
 	wdelayerVars     common.WDelayerVariables
-	nextForgers      []historydb.NextForgerAPI
+	nextForgers      []NextForger
 }

 var tc testCommon
 var config configAPI
 var api *API
-var stateAPIUpdater *stateapiupdater.Updater

 // TestMain initializes the API server, and fill HistoryDB and StateDB with fake data,
 // emulating the task of the synchronizer in order to have data to be returned
@@ -203,13 +200,23 @@ func TestMain(m *testing.M) {
 	if err != nil {
 		panic(err)
 	}
-	apiConnCon := db.NewAPIConnectionController(1, time.Second)
-	hdb := historydb.NewHistoryDB(database, database, apiConnCon)
+	apiConnCon := db.NewAPICnnectionController(1, time.Second)
+	hdb := historydb.NewHistoryDB(database, apiConnCon)
 	if err != nil {
 		panic(err)
 	}
+	// StateDB
+	dir, err := ioutil.TempDir("", "tmpdb")
+	if err != nil {
+		panic(err)
+	}
+	defer func() {
+		if err := os.RemoveAll(dir); err != nil {
+			panic(err)
+		}
+	}()
 	// L2DB
-	l2DB := l2db.NewL2DB(database, database, 10, 1000, 0.0, 24*time.Hour, apiConnCon)
+	l2DB := l2db.NewL2DB(database, 10, 1000, 0.0, 24*time.Hour, apiConnCon)
 	test.WipeDB(l2DB.DB()) // this will clean HistoryDB and L2DB
 	// Config (smart contract constants)
 	chainID := uint16(0)
@@ -222,54 +229,29 @@ func TestMain(m *testing.M) {

 	// API
 	apiGin := gin.Default()
-	// Reset DB
-	test.WipeDB(hdb.DB())
-
-	constants := &historydb.Constants{
-		SCConsts: common.SCConsts{
-			Rollup:   _config.RollupConstants,
-			Auction:  _config.AuctionConstants,
-			WDelayer: _config.WDelayerConstants,
-		},
-		ChainID:       chainID,
-		HermezAddress: _config.HermezAddress,
-	}
-	if err := hdb.SetConstants(constants); err != nil {
-		panic(err)
-	}
-	nodeConfig := &historydb.NodeConfig{
-		MaxPoolTxs: 10,
-		MinFeeUSD:  0,
-	}
-	if err := hdb.SetNodeConfig(nodeConfig); err != nil {
-		panic(err)
-	}
-
 	api, err = NewAPI(
 		true,
 		true,
 		apiGin,
 		hdb,
 		l2DB,
+		&_config,
 	)
 	if err != nil {
-		log.Error(err)
 		panic(err)
 	}
 	// Start server
-	listener, err := net.Listen("tcp", apiAddr) //nolint:gosec
-	if err != nil {
-		panic(err)
-	}
-	server := &http.Server{Handler: apiGin}
+	server := &http.Server{Addr: apiPort, Handler: apiGin}
 	go func() {
-		if err := server.Serve(listener); err != nil &&
-			tracerr.Unwrap(err) != http.ErrServerClosed {
+		if err := server.ListenAndServe(); err != nil && tracerr.Unwrap(err) != http.ErrServerClosed {
 			panic(err)
 		}
 	}()

-	// Generate blockchain data with til
+	// Reset DB
+	test.WipeDB(api.h.DB())
+
+	// Genratre blockchain data with til
 	tcc := til.NewContext(chainID, common.RollupConstMaxL1UserTx)
 	tilCfgExtra := til.ConfigExtra{
 		BootCoordAddr: ethCommon.HexToAddress("0xE39fEc6224708f0772D2A74fd3f9055A90E0A9f2"),
@@ -315,7 +297,7 @@ func TestMain(m *testing.M) {
 		USD:         &ethUSD,
 		USDUpdate:   &ethNow,
 	})
-	err = api.h.UpdateTokenValue(common.EmptyAddr, ethUSD)
+	err = api.h.UpdateTokenValue(test.EthToken.Symbol, ethUSD)
 	if err != nil {
 		panic(err)
 	}
@@ -342,7 +324,7 @@ func TestMain(m *testing.M) {
 			token.USD = &value
 			token.USDUpdate = &now
 			// Set value in DB
-			err = api.h.UpdateTokenValue(token.EthAddr, value)
+			err = api.h.UpdateTokenValue(token.Symbol, value)
 			if err != nil {
 				panic(err)
 			}
@@ -469,19 +451,19 @@ func TestMain(m *testing.M) {
 	if err = api.h.AddBids(bids); err != nil {
 		panic(err)
 	}
-	bootForger := historydb.NextForgerAPI{
+	bootForger := NextForger{
 		Coordinator: historydb.CoordinatorAPI{
 			Forger: auctionVars.BootCoordinator,
 			URL:    auctionVars.BootCoordinatorURL,
 		},
 	}
 	// Set next forgers: set all as boot coordinator then replace the non boot coordinators
-	nextForgers := []historydb.NextForgerAPI{}
+	nextForgers := []NextForger{}
 	var initBlock int64 = 140
 	var deltaBlocks int64 = 40
 	for i := 1; i < int(auctionVars.ClosedAuctionSlots)+2; i++ {
 		fromBlock := initBlock + deltaBlocks*int64(i-1)
-		bootForger.Period = historydb.Period{
+		bootForger.Period = Period{
 			SlotNum:   int64(i),
 			FromBlock: fromBlock,
 			ToBlock:   fromBlock + deltaBlocks - 1,
@@ -521,12 +503,6 @@ func TestMain(m *testing.M) {
 		WithdrawalDelay: uint64(3000),
 	}

-	stateAPIUpdater = stateapiupdater.NewUpdater(hdb, nodeConfig, &common.SCVariables{
-		Rollup:   rollupVars,
-		Auction:  auctionVars,
-		WDelayer: wdelayerVars,
-	}, constants)
-
 	// Generate test data, as expected to be received/sended from/to the API
 	testCoords := genTestCoordinators(commonCoords)
 	testBids := genTestBids(commonBlocks, testCoords, bids)
@@ -604,18 +580,21 @@ func TestMain(m *testing.M) {
 	if err := database.Close(); err != nil {
 		panic(err)
 	}
+	if err := os.RemoveAll(dir); err != nil {
+		panic(err)
+	}
 	os.Exit(result)
 }

 func TestTimeout(t *testing.T) {
 	pass := os.Getenv("POSTGRES_PASS")
-	databaseTO, err := db.ConnectSQLDB(5432, "localhost", "hermez", pass, "hermez")
+	databaseTO, err := db.InitSQLDB(5432, "localhost", "hermez", pass, "hermez")
 	require.NoError(t, err)
-	apiConnConTO := db.NewAPIConnectionController(1, 100*time.Millisecond)
-	hdbTO := historydb.NewHistoryDB(databaseTO, databaseTO, apiConnConTO)
+	apiConnConTO := db.NewAPICnnectionController(1, 100*time.Millisecond)
+	hdbTO := historydb.NewHistoryDB(databaseTO, apiConnConTO)
 	require.NoError(t, err)
 	// L2DB
-	l2DBTO := l2db.NewL2DB(databaseTO, databaseTO, 10, 1000, 1.0, 24*time.Hour, apiConnConTO)
+	l2DBTO := l2db.NewL2DB(databaseTO, 10, 1000, 0.0, 24*time.Hour, apiConnConTO)

 	// API
 	apiGinTO := gin.Default()
@@ -630,21 +609,20 @@ func TestTimeout(t *testing.T) {
 		<-finishWait
 	})
 	// Start server
-	serverTO := &http.Server{Handler: apiGinTO}
-	listener, err := net.Listen("tcp", ":4444") //nolint:gosec
-	require.NoError(t, err)
+	serverTO := &http.Server{Addr: ":4444", Handler: apiGinTO}
 	go func() {
-		if err := serverTO.Serve(listener); err != nil &&
-			tracerr.Unwrap(err) != http.ErrServerClosed {
+		if err := serverTO.ListenAndServe(); err != nil && tracerr.Unwrap(err) != http.ErrServerClosed {
 			require.NoError(t, err)
 		}
 	}()
+	_config := getConfigTest(0)
 	_, err = NewAPI(
 		true,
 		true,
 		apiGinTO,
 		hdbTO,
 		l2DBTO,
+		&_config,
 	)
 	require.NoError(t, err)

--- a/api/batch.go
+++ b/api/batch.go
@@ -52,7 +52,7 @@ func (a *API) getBatches(c *gin.Context) {
 		return
 	}

-	// Build successful response
+	// Build succesfull response
 	type batchesResponse struct {
 		Batches      []historydb.BatchAPI `json:"batches"`
 		PendingItems uint64               `json:"pendingItems"`
--- a/api/batch_test.go
+++ b/api/batch_test.go
@@ -7,12 +7,10 @@ import (
 	"time"

 	ethCommon "github.com/ethereum/go-ethereum/common"
-	"github.com/hermeznetwork/hermez-node/apitypes"
 	"github.com/hermeznetwork/hermez-node/common"
 	"github.com/hermeznetwork/hermez-node/db/historydb"
 	"github.com/mitchellh/copystructure"
 	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
 )

 type testBatch struct {
@@ -22,7 +20,7 @@ type testBatch struct {
 	EthBlockHash  ethCommon.Hash            `json:"ethereumBlockHash"`
 	Timestamp     time.Time                 `json:"timestamp"`
 	ForgerAddr    ethCommon.Address         `json:"forgerAddr"`
-	CollectedFees apitypes.CollectedFeesAPI `json:"collectedFees"`
+	CollectedFees map[common.TokenID]string `json:"collectedFees"`
 	TotalFeesUSD  *float64                  `json:"historicTotalCollectedFeesUSD"`
 	StateRoot     string                    `json:"stateRoot"`
 	NumAccounts   int                       `json:"numAccounts"`
@@ -75,9 +73,9 @@ func genTestBatches(
 		if !found {
 			panic("block not found")
 		}
-		collectedFees := apitypes.CollectedFeesAPI(make(map[common.TokenID]apitypes.BigIntStr))
+		collectedFees := make(map[common.TokenID]string)
 		for k, v := range cBatches[i].CollectedFees {
-			collectedFees[k] = *apitypes.NewBigIntStr(v)
+			collectedFees[k] = v.String()
 		}
 		forgedTxs := 0
 		for _, tx := range txs {
@@ -134,7 +132,7 @@ func TestGetBatches(t *testing.T) {
 	limit := 3
 	path := fmt.Sprintf("%s?limit=%d", endpoint, limit)
 	err := doGoodReqPaginated(path, historydb.OrderAsc, &testBatchesResponse{}, appendIter)
-	require.NoError(t, err)
+	assert.NoError(t, err)
 	assertBatches(t, tc.batches, fetchedBatches)

 	// minBatchNum
@@ -143,7 +141,7 @@ func TestGetBatches(t *testing.T) {
 	minBatchNum := tc.batches[len(tc.batches)/2].BatchNum
 	path = fmt.Sprintf("%s?minBatchNum=%d&limit=%d", endpoint, minBatchNum, limit)
 	err = doGoodReqPaginated(path, historydb.OrderAsc, &testBatchesResponse{}, appendIter)
-	require.NoError(t, err)
+	assert.NoError(t, err)
 	minBatchNumBatches := []testBatch{}
 	for i := 0; i < len(tc.batches); i++ {
 		if tc.batches[i].BatchNum > minBatchNum {
@@ -158,7 +156,7 @@ func TestGetBatches(t *testing.T) {
 	maxBatchNum := tc.batches[len(tc.batches)/2].BatchNum
 	path = fmt.Sprintf("%s?maxBatchNum=%d&limit=%d", endpoint, maxBatchNum, limit)
 	err = doGoodReqPaginated(path, historydb.OrderAsc, &testBatchesResponse{}, appendIter)
-	require.NoError(t, err)
+	assert.NoError(t, err)
 	maxBatchNumBatches := []testBatch{}
 	for i := 0; i < len(tc.batches); i++ {
 		if tc.batches[i].BatchNum < maxBatchNum {
@@ -173,7 +171,7 @@ func TestGetBatches(t *testing.T) {
 	slotNum := tc.batches[len(tc.batches)/2].SlotNum
 	path = fmt.Sprintf("%s?slotNum=%d&limit=%d", endpoint, slotNum, limit)
 	err = doGoodReqPaginated(path, historydb.OrderAsc, &testBatchesResponse{}, appendIter)
-	require.NoError(t, err)
+	assert.NoError(t, err)
 	slotNumBatches := []testBatch{}
 	for i := 0; i < len(tc.batches); i++ {
 		if tc.batches[i].SlotNum == slotNum {
@@ -188,7 +186,7 @@ func TestGetBatches(t *testing.T) {
 	forgerAddr := tc.batches[len(tc.batches)/2].ForgerAddr
 	path = fmt.Sprintf("%s?forgerAddr=%s&limit=%d", endpoint, forgerAddr.String(), limit)
 	err = doGoodReqPaginated(path, historydb.OrderAsc, &testBatchesResponse{}, appendIter)
-	require.NoError(t, err)
+	assert.NoError(t, err)
 	forgerAddrBatches := []testBatch{}
 	for i := 0; i < len(tc.batches); i++ {
 		if tc.batches[i].ForgerAddr == forgerAddr {
@@ -202,7 +200,7 @@ func TestGetBatches(t *testing.T) {
 	limit = 6
 	path = fmt.Sprintf("%s?limit=%d", endpoint, limit)
 	err = doGoodReqPaginated(path, historydb.OrderDesc, &testBatchesResponse{}, appendIter)
-	require.NoError(t, err)
+	assert.NoError(t, err)
 	flippedBatches := []testBatch{}
 	for i := len(tc.batches) - 1; i >= 0; i-- {
 		flippedBatches = append(flippedBatches, tc.batches[i])
@@ -216,7 +214,7 @@ func TestGetBatches(t *testing.T) {
 	minBatchNum = tc.batches[len(tc.batches)/4].BatchNum
 	path = fmt.Sprintf("%s?minBatchNum=%d&maxBatchNum=%d&limit=%d", endpoint, minBatchNum, maxBatchNum, limit)
 	err = doGoodReqPaginated(path, historydb.OrderAsc, &testBatchesResponse{}, appendIter)
-	require.NoError(t, err)
+	assert.NoError(t, err)
 	minMaxBatchNumBatches := []testBatch{}
 	for i := 0; i < len(tc.batches); i++ {
 		if tc.batches[i].BatchNum < maxBatchNum && tc.batches[i].BatchNum > minBatchNum {
@@ -229,25 +227,25 @@ func TestGetBatches(t *testing.T) {
 	fetchedBatches = []testBatch{}
 	path = fmt.Sprintf("%s?slotNum=%d&minBatchNum=%d", endpoint, 1, 25)
 	err = doGoodReqPaginated(path, historydb.OrderAsc, &testBatchesResponse{}, appendIter)
-	require.NoError(t, err)
+	assert.NoError(t, err)
 	assertBatches(t, []testBatch{}, fetchedBatches)

 	// 400
 	// Invalid minBatchNum
 	path = fmt.Sprintf("%s?minBatchNum=%d", endpoint, -2)
 	err = doBadReq("GET", path, nil, 400)
-	require.NoError(t, err)
+	assert.NoError(t, err)
 	// Invalid forgerAddr
 	path = fmt.Sprintf("%s?forgerAddr=%s", endpoint, "0xG0000001")
 	err = doBadReq("GET", path, nil, 400)
-	require.NoError(t, err)
+	assert.NoError(t, err)
 }

 func TestGetBatch(t *testing.T) {
 	endpoint := apiURL + "batches/"
 	for _, batch := range tc.batches {
 		fetchedBatch := testBatch{}
-		require.NoError(
+		assert.NoError(
 			t, doGoodReq(
 				"GET",
 				endpoint+strconv.Itoa(int(batch.BatchNum)),
@@ -257,16 +255,16 @@ func TestGetBatch(t *testing.T) {
 		assertBatch(t, batch, fetchedBatch)
 	}
 	// 400
-	require.NoError(t, doBadReq("GET", endpoint+"foo", nil, 400))
+	assert.NoError(t, doBadReq("GET", endpoint+"foo", nil, 400))
 	// 404
-	require.NoError(t, doBadReq("GET", endpoint+"99999", nil, 404))
+	assert.NoError(t, doBadReq("GET", endpoint+"99999", nil, 404))
 }

 func TestGetFullBatch(t *testing.T) {
 	endpoint := apiURL + "full-batches/"
 	for _, fullBatch := range tc.fullBatches {
 		fetchedFullBatch := testFullBatch{}
-		require.NoError(
+		assert.NoError(
 			t, doGoodReq(
 				"GET",
 				endpoint+strconv.Itoa(int(fullBatch.Batch.BatchNum)),
@@ -277,9 +275,9 @@ func TestGetFullBatch(t *testing.T) {
 		assertTxs(t, fullBatch.Txs, fetchedFullBatch.Txs)
 	}
 	// 400
-	require.NoError(t, doBadReq("GET", endpoint+"foo", nil, 400))
+	assert.NoError(t, doBadReq("GET", endpoint+"foo", nil, 400))
 	// 404
-	require.NoError(t, doBadReq("GET", endpoint+"99999", nil, 404))
+	assert.NoError(t, doBadReq("GET", endpoint+"99999", nil, 404))
 }

 func assertBatches(t *testing.T, expected, actual []testBatch) {
--- a/api/bids.go
+++ b/api/bids.go
@@ -34,7 +34,7 @@ func (a *API) getBids(c *gin.Context) {
 		return
 	}

-	// Build successful response
+	// Build succesfull response
 	type bidsResponse struct {
 		Bids         []historydb.BidAPI `json:"bids"`
 		PendingItems uint64             `json:"pendingItems"`
--- a/api/coordinator.go
+++ b/api/coordinator.go
@@ -32,7 +32,7 @@ func (a *API) getCoordinators(c *gin.Context) {
 		return
 	}

-	// Build successful response
+	// Build succesfull response
 	type coordinatorsResponse struct {
 		Coordinators []historydb.CoordinatorAPI `json:"coordinators"`
 		PendingItems uint64                     `json:"pendingItems"`
--- a/api/exits.go
+++ b/api/exits.go
@@ -43,7 +43,7 @@ func (a *API) getExits(c *gin.Context) {
 		return
 	}

-	// Build successful response
+	// Build succesfull response
 	type exitsResponse struct {
 		Exits        []historydb.ExitAPI `json:"exits"`
 		PendingItems uint64              `json:"pendingItems"`
@@ -72,6 +72,6 @@ func (a *API) getExit(c *gin.Context) {
 		retSQLErr(err, c)
 		return
 	}
-	// Build successful response
+	// Build succesfull response
 	c.JSON(http.StatusOK, exit)
 }
--- a/api/handlers.go
+++ b/api/handlers.go
@@ -14,7 +14,7 @@ import (
 )

 const (
-	// maxLimit is the max permitted items to be returned in paginated responses
+	// maxLimit is the max permited items to be returned in paginated responses
 	maxLimit uint = 2049

 	// dfltOrder indicates how paginated endpoints are ordered if not specified
@@ -40,8 +40,8 @@ const (
 )

 var (
-	// ErrNilBidderAddr is used when a nil bidderAddr is received in the getCoordinator method
-	ErrNilBidderAddr = errors.New("biderAddr can not be nil")
+	// ErrNillBidderAddr is used when a nil bidderAddr is received in the getCoordinator method
+	ErrNillBidderAddr = errors.New("biderAddr can not be nil")
 )

 func retSQLErr(err error, c *gin.Context) {
--- a/api/parsers.go
+++ b/api/parsers.go
@@ -50,19 +50,19 @@ func parsePagination(c querier) (fromItem *uint, order string, limit *uint, err
 	return fromItem, order, limit, nil
 }

-// nolint reason: res may be not overwritten
+// nolint reason: res may be not overwriten
 func parseQueryUint(name string, dflt *uint, min, max uint, c querier) (*uint, error) { //nolint:SA4009
 	str := c.Query(name)
 	return stringToUint(str, name, dflt, min, max)
 }

-// nolint reason: res may be not overwritten
+// nolint reason: res may be not overwriten
 func parseQueryInt64(name string, dflt *int64, min, max int64, c querier) (*int64, error) { //nolint:SA4009
 	str := c.Query(name)
 	return stringToInt64(str, name, dflt, min, max)
 }

-// nolint reason: res may be not overwritten
+// nolint reason: res may be not overwriten
 func parseQueryBool(name string, dflt *bool, c querier) (*bool, error) { //nolint:SA4009
 	str := c.Query(name)
 	if str == "" {
@@ -295,13 +295,13 @@ func parseParamIdx(c paramer) (*common.Idx, error) {
 	return stringToIdx(idxStr, name)
 }

-// nolint reason: res may be not overwritten
+// nolint reason: res may be not overwriten
 func parseParamUint(name string, dflt *uint, min, max uint, c paramer) (*uint, error) { //nolint:SA4009
 	str := c.Param(name)
 	return stringToUint(str, name, dflt, min, max)
 }

-// nolint reason: res may be not overwritten
+// nolint reason: res may be not overwriten
 func parseParamInt64(name string, dflt *int64, min, max int64, c paramer) (*int64, error) { //nolint:SA4009
 	str := c.Param(name)
 	return stringToInt64(str, name, dflt, min, max)
--- a/api/slots.go
+++ b/api/slots.go
@@ -11,7 +11,7 @@ import (
 	"github.com/hermeznetwork/tracerr"
 )

-// SlotAPI is a representation of a slot information
+// SlotAPI is a repesentation of a slot information
 type SlotAPI struct {
 	ItemID      uint64            `json:"itemId"`
 	SlotNum     int64             `json:"slotNum"`
@@ -316,7 +316,7 @@ func (a *API) getSlots(c *gin.Context) {
 		return
 	}

-	// Build successful response
+	// Build succesfull response
 	type slotsResponse struct {
 		Slots        []SlotAPI `json:"slots"`
 		PendingItems uint64    `json:"pendingItems"`
--- a/api/slots_test.go
+++ b/api/slots_test.go
@@ -99,9 +99,7 @@ func TestGetSlot(t *testing.T) {
 			nil, &fetchedSlot,
 		),
 	)
-	// ni, err := api.h.GetNodeInfoAPI()
-	// assert.NoError(t, err)
-	emptySlot := api.getEmptyTestSlot(slotNum, 0, tc.auctionVars)
+	emptySlot := api.getEmptyTestSlot(slotNum, api.status.Network.LastSyncBlock, tc.auctionVars)
 	assertSlot(t, emptySlot, fetchedSlot)

 	// Invalid slotNum
@@ -129,10 +127,8 @@ func TestGetSlots(t *testing.T) {
 	err := doGoodReqPaginated(path, historydb.OrderAsc, &testSlotsResponse{}, appendIter)
 	assert.NoError(t, err)
 	allSlots := tc.slots
-	// ni, err := api.h.GetNodeInfoAPI()
-	// assert.NoError(t, err)
 	for i := tc.slots[len(tc.slots)-1].SlotNum; i < maxSlotNum; i++ {
-		emptySlot := api.getEmptyTestSlot(i+1, 0, tc.auctionVars)
+		emptySlot := api.getEmptyTestSlot(i+1, api.status.Network.LastSyncBlock, tc.auctionVars)
 		allSlots = append(allSlots, emptySlot)
 	}
 	assertSlots(t, allSlots, fetchedSlots)
--- a/api/state.go
+++ b/api/state.go
@@ -1,16 +1,306 @@
 package api

 import (
+	"database/sql"
+	"fmt"
+	"math/big"
 	"net/http"
+	"time"

 	"github.com/gin-gonic/gin"
+	"github.com/hermeznetwork/hermez-node/apitypes"
+	"github.com/hermeznetwork/hermez-node/common"
+	"github.com/hermeznetwork/hermez-node/db/historydb"
+	"github.com/hermeznetwork/tracerr"
 )

-func (a *API) getState(c *gin.Context) {
-	stateAPI, err := a.h.GetStateAPI()
-	if err != nil {
-		retBadReq(err, c)
-		return
-	}
-	c.JSON(http.StatusOK, stateAPI)
+// Network define status of the network
+type Network struct {
+	LastEthBlock  int64               `json:"lastEthereumBlock"`
+	LastSyncBlock int64               `json:"lastSynchedBlock"`
+	LastBatch     *historydb.BatchAPI `json:"lastBatch"`
+	CurrentSlot   int64               `json:"currentSlot"`
+	NextForgers   []NextForger        `json:"nextForgers"`
+}
+
+// NextForger  is a representation of the information of a coordinator and the period will forge
+type NextForger struct {
+	Coordinator historydb.CoordinatorAPI `json:"coordinator"`
+	Period      Period                   `json:"period"`
+}
+
+// Period is a representation of a period
+type Period struct {
+	SlotNum       int64     `json:"slotNum"`
+	FromBlock     int64     `json:"fromBlock"`
+	ToBlock       int64     `json:"toBlock"`
+	FromTimestamp time.Time `json:"fromTimestamp"`
+	ToTimestamp   time.Time `json:"toTimestamp"`
+}
+
+func (a *API) getState(c *gin.Context) {
+	// TODO: There are no events for the buckets information, so now this information will be 0
+	a.status.RLock()
+	status := a.status //nolint
+	a.status.RUnlock()
+	c.JSON(http.StatusOK, status) //nolint
+}
+
+// SC Vars
+
+// SetRollupVariables set Status.Rollup variables
+func (a *API) SetRollupVariables(rollupVariables common.RollupVariables) {
+	a.status.Lock()
+	var rollupVAPI historydb.RollupVariablesAPI
+	rollupVAPI.EthBlockNum = rollupVariables.EthBlockNum
+	rollupVAPI.FeeAddToken = apitypes.NewBigIntStr(rollupVariables.FeeAddToken)
+	rollupVAPI.ForgeL1L2BatchTimeout = rollupVariables.ForgeL1L2BatchTimeout
+	rollupVAPI.WithdrawalDelay = rollupVariables.WithdrawalDelay
+
+	for i, bucket := range rollupVariables.Buckets {
+		var apiBucket historydb.BucketParamsAPI
+		apiBucket.CeilUSD = apitypes.NewBigIntStr(bucket.CeilUSD)
+		apiBucket.Withdrawals = apitypes.NewBigIntStr(bucket.Withdrawals)
+		apiBucket.BlockWithdrawalRate = apitypes.NewBigIntStr(bucket.BlockWithdrawalRate)
+		apiBucket.MaxWithdrawals = apitypes.NewBigIntStr(bucket.MaxWithdrawals)
+		rollupVAPI.Buckets[i] = apiBucket
+	}
+
+	rollupVAPI.SafeMode = rollupVariables.SafeMode
+	a.status.Rollup = rollupVAPI
+	a.status.Unlock()
+}
+
+// SetWDelayerVariables set Status.WithdrawalDelayer variables
+func (a *API) SetWDelayerVariables(wDelayerVariables common.WDelayerVariables) {
+	a.status.Lock()
+	a.status.WithdrawalDelayer = wDelayerVariables
+	a.status.Unlock()
+}
+
+// SetAuctionVariables set Status.Auction variables
+func (a *API) SetAuctionVariables(auctionVariables common.AuctionVariables) {
+	a.status.Lock()
+	var auctionAPI historydb.AuctionVariablesAPI
+
+	auctionAPI.EthBlockNum = auctionVariables.EthBlockNum
+	auctionAPI.DonationAddress = auctionVariables.DonationAddress
+	auctionAPI.BootCoordinator = auctionVariables.BootCoordinator
+	auctionAPI.BootCoordinatorURL = auctionVariables.BootCoordinatorURL
+	auctionAPI.DefaultSlotSetBidSlotNum = auctionVariables.DefaultSlotSetBidSlotNum
+	auctionAPI.ClosedAuctionSlots = auctionVariables.ClosedAuctionSlots
+	auctionAPI.OpenAuctionSlots = auctionVariables.OpenAuctionSlots
+	auctionAPI.Outbidding = auctionVariables.Outbidding
+	auctionAPI.SlotDeadline = auctionVariables.SlotDeadline
+
+	for i, slot := range auctionVariables.DefaultSlotSetBid {
+		auctionAPI.DefaultSlotSetBid[i] = apitypes.NewBigIntStr(slot)
+	}
+
+	for i, ratio := range auctionVariables.AllocationRatio {
+		auctionAPI.AllocationRatio[i] = ratio
+	}
+
+	a.status.Auction = auctionAPI
+	a.status.Unlock()
+}
+
+// Network
+
+// UpdateNetworkInfoBlock update Status.Network block related information
+func (a *API) UpdateNetworkInfoBlock(
+	lastEthBlock, lastSyncBlock common.Block,
+) {
+	a.status.Network.LastSyncBlock = lastSyncBlock.Num
+	a.status.Network.LastEthBlock = lastEthBlock.Num
+}
+
+// UpdateNetworkInfo update Status.Network information
+func (a *API) UpdateNetworkInfo(
+	lastEthBlock, lastSyncBlock common.Block,
+	lastBatchNum common.BatchNum, currentSlot int64,
+) error {
+	lastBatch, err := a.h.GetBatchAPI(lastBatchNum)
+	if tracerr.Unwrap(err) == sql.ErrNoRows {
+		lastBatch = nil
+	} else if err != nil {
+		return tracerr.Wrap(err)
+	}
+	lastClosedSlot := currentSlot + int64(a.status.Auction.ClosedAuctionSlots)
+	nextForgers, err := a.getNextForgers(lastSyncBlock, currentSlot, lastClosedSlot)
+	if tracerr.Unwrap(err) == sql.ErrNoRows {
+		nextForgers = nil
+	} else if err != nil {
+		return tracerr.Wrap(err)
+	}
+	a.status.Lock()
+	a.status.Network.LastSyncBlock = lastSyncBlock.Num
+	a.status.Network.LastEthBlock = lastEthBlock.Num
+	a.status.Network.LastBatch = lastBatch
+	a.status.Network.CurrentSlot = currentSlot
+	a.status.Network.NextForgers = nextForgers
+
+	// Update buckets withdrawals
+	bucketsUpdate, err := a.h.GetBucketUpdatesAPI()
+	if tracerr.Unwrap(err) == sql.ErrNoRows {
+		bucketsUpdate = nil
+	} else if err != nil {
+		return tracerr.Wrap(err)
+	}
+
+	for i, bucketParams := range a.status.Rollup.Buckets {
+		for _, bucketUpdate := range bucketsUpdate {
+			if bucketUpdate.NumBucket == i {
+				bucketParams.Withdrawals = bucketUpdate.Withdrawals
+				a.status.Rollup.Buckets[i] = bucketParams
+				break
+			}
+		}
+	}
+	a.status.Unlock()
+	return nil
+}
+
+// apiSlotToBigInts converts from [6]*apitypes.BigIntStr to [6]*big.Int
+func apiSlotToBigInts(defaultSlotSetBid [6]*apitypes.BigIntStr) ([6]*big.Int, error) {
+	var slots [6]*big.Int
+
+	for i, slot := range defaultSlotSetBid {
+		bigInt, ok := new(big.Int).SetString(string(*slot), 10)
+		if !ok {
+			return slots, tracerr.Wrap(fmt.Errorf("can't convert %T into big.Int", slot))
+		}
+		slots[i] = bigInt
+	}
+
+	return slots, nil
+}
+
+// getNextForgers returns next forgers
+func (a *API) getNextForgers(lastBlock common.Block, currentSlot, lastClosedSlot int64) ([]NextForger, error) {
+	secondsPerBlock := int64(15) //nolint:gomnd
+	// currentSlot and lastClosedSlot included
+	limit := uint(lastClosedSlot - currentSlot + 1)
+	bids, _, err := a.h.GetBestBidsAPI(&currentSlot, &lastClosedSlot, nil, &limit, "ASC")
+	if err != nil && tracerr.Unwrap(err) != sql.ErrNoRows {
+		return nil, tracerr.Wrap(err)
+	}
+	nextForgers := []NextForger{}
+	// Get min bid info
+	var minBidInfo []historydb.MinBidInfo
+	if currentSlot >= a.status.Auction.DefaultSlotSetBidSlotNum {
+		// All min bids can be calculated with the last update of AuctionVariables
+		bigIntSlots, err := apiSlotToBigInts(a.status.Auction.DefaultSlotSetBid)
+		if err != nil {
+			return nil, tracerr.Wrap(err)
+		}
+
+		minBidInfo = []historydb.MinBidInfo{{
+			DefaultSlotSetBid:        bigIntSlots,
+			DefaultSlotSetBidSlotNum: a.status.Auction.DefaultSlotSetBidSlotNum,
+		}}
+	} else {
+		// Get all the relevant updates from the DB
+		minBidInfo, err = a.h.GetAuctionVarsUntilSetSlotNumAPI(lastClosedSlot, int(lastClosedSlot-currentSlot)+1)
+		if err != nil {
+			return nil, tracerr.Wrap(err)
+		}
+	}
+	// Create nextForger for each slot
+	for i := currentSlot; i <= lastClosedSlot; i++ {
+		fromBlock := i*int64(a.cg.AuctionConstants.BlocksPerSlot) + a.cg.AuctionConstants.GenesisBlockNum
+		toBlock := (i+1)*int64(a.cg.AuctionConstants.BlocksPerSlot) + a.cg.AuctionConstants.GenesisBlockNum - 1
+		nextForger := NextForger{
+			Period: Period{
+				SlotNum:       i,
+				FromBlock:     fromBlock,
+				ToBlock:       toBlock,
+				FromTimestamp: lastBlock.Timestamp.Add(time.Second * time.Duration(secondsPerBlock*(fromBlock-lastBlock.Num))),
+				ToTimestamp:   lastBlock.Timestamp.Add(time.Second * time.Duration(secondsPerBlock*(toBlock-lastBlock.Num))),
+			},
+		}
+		foundForger := false
+		// If there is a bid for a slot, get forger (coordinator)
+		for j := range bids {
+			slotNum := bids[j].SlotNum
+			if slotNum == i {
+				// There's a bid for the slot
+				// Check if the bid is greater than the minimum required
+				for i := 0; i < len(minBidInfo); i++ {
+					// Find the most recent update
+					if slotNum >= minBidInfo[i].DefaultSlotSetBidSlotNum {
+						// Get min bid
+						minBidSelector := slotNum % int64(len(a.status.Auction.DefaultSlotSetBid))
+						minBid := minBidInfo[i].DefaultSlotSetBid[minBidSelector]
+						// Check if the bid has beaten the minimum
+						bid, ok := new(big.Int).SetString(string(bids[j].BidValue), 10)
+						if !ok {
+							return nil, tracerr.New("Wrong bid value, error parsing it as big.Int")
+						}
+						if minBid.Cmp(bid) == 1 {
+							// Min bid is greater than bid, the slot will be forged by boot coordinator
+							break
+						}
+						foundForger = true
+						break
+					}
+				}
+				if !foundForger { // There is no bid or it's smaller than the minimum
+					break
+				}
+				coordinator, err := a.h.GetCoordinatorAPI(bids[j].Bidder)
+				if err != nil {
+					return nil, tracerr.Wrap(err)
+				}
+				nextForger.Coordinator = *coordinator
+				break
+			}
+		}
+		// If there is no bid, the coordinator that will forge is boot coordinator
+		if !foundForger {
+			nextForger.Coordinator = historydb.CoordinatorAPI{
+				Forger: a.status.Auction.BootCoordinator,
+				URL:    a.status.Auction.BootCoordinatorURL,
+			}
+		}
+		nextForgers = append(nextForgers, nextForger)
+	}
+	return nextForgers, nil
+}
+
+// Metrics
+
+// UpdateMetrics update Status.Metrics information
+func (a *API) UpdateMetrics() error {
+	a.status.RLock()
+	if a.status.Network.LastBatch == nil {
+		a.status.RUnlock()
+		return nil
+	}
+	batchNum := a.status.Network.LastBatch.BatchNum
+	a.status.RUnlock()
+	metrics, err := a.h.GetMetricsAPI(batchNum)
+	if err != nil {
+		return tracerr.Wrap(err)
+	}
+	a.status.Lock()
+	a.status.Metrics = *metrics
+	a.status.Unlock()
+	return nil
+}
+
+// Recommended fee
+
+// UpdateRecommendedFee update Status.RecommendedFee information
+func (a *API) UpdateRecommendedFee() error {
+	feeExistingAccount, err := a.h.GetAvgTxFeeAPI()
+	if err != nil {
+		return tracerr.Wrap(err)
+	}
+	a.status.Lock()
+	a.status.RecommendedFee.ExistingAccount = feeExistingAccount
+	a.status.RecommendedFee.CreatesAccount = createAccountExtraFeePercentage * feeExistingAccount
+	a.status.RecommendedFee.CreatesAccountAndRegister = createAccountInternalExtraFeePercentage * feeExistingAccount
+	a.status.Unlock()
+	return nil
 }
--- a/api/state_test.go
+++ b/api/state_test.go
@@ -13,7 +13,7 @@ import (

 type testStatus struct {
 	Network           testNetwork                   `json:"network"`
-	Metrics           historydb.MetricsAPI          `json:"metrics"`
+	Metrics           historydb.Metrics             `json:"metrics"`
 	Rollup            historydb.RollupVariablesAPI  `json:"rollup"`
 	Auction           historydb.AuctionVariablesAPI `json:"auction"`
 	WithdrawalDelayer common.WDelayerVariables      `json:"withdrawalDelayer"`
@@ -21,19 +21,18 @@ type testStatus struct {
 }

 type testNetwork struct {
-	LastEthBlock  int64                     `json:"lastEthereumBlock"`
-	LastSyncBlock int64                     `json:"lastSynchedBlock"`
-	LastBatch     testBatch                 `json:"lastBatch"`
-	CurrentSlot   int64                     `json:"currentSlot"`
-	NextForgers   []historydb.NextForgerAPI `json:"nextForgers"`
+	LastEthBlock  int64        `json:"lastEthereumBlock"`
+	LastSyncBlock int64        `json:"lastSynchedBlock"`
+	LastBatch     testBatch    `json:"lastBatch"`
+	CurrentSlot   int64        `json:"currentSlot"`
+	NextForgers   []NextForger `json:"nextForgers"`
 }

 func TestSetRollupVariables(t *testing.T) {
-	stateAPIUpdater.SetSCVars(&common.SCVariablesPtr{Rollup: &tc.rollupVars})
-	require.NoError(t, stateAPIUpdater.Store())
-	ni, err := api.h.GetNodeInfoAPI()
-	require.NoError(t, err)
-	assertEqualRollupVariables(t, tc.rollupVars, ni.StateAPI.Rollup, true)
+	rollupVars := &common.RollupVariables{}
+	assertEqualRollupVariables(t, *rollupVars, api.status.Rollup, true)
+	api.SetRollupVariables(tc.rollupVars)
+	assertEqualRollupVariables(t, tc.rollupVars, api.status.Rollup, true)
 }

 func assertEqualRollupVariables(t *testing.T, rollupVariables common.RollupVariables, apiVariables historydb.RollupVariablesAPI, checkBuckets bool) {
@@ -52,19 +51,17 @@ func assertEqualRollupVariables(t *testing.T, rollupVariables common.RollupVaria
 }

 func TestSetWDelayerVariables(t *testing.T) {
-	stateAPIUpdater.SetSCVars(&common.SCVariablesPtr{WDelayer: &tc.wdelayerVars})
-	require.NoError(t, stateAPIUpdater.Store())
-	ni, err := api.h.GetNodeInfoAPI()
-	require.NoError(t, err)
-	assert.Equal(t, tc.wdelayerVars, ni.StateAPI.WithdrawalDelayer)
+	wdelayerVars := &common.WDelayerVariables{}
+	assert.Equal(t, *wdelayerVars, api.status.WithdrawalDelayer)
+	api.SetWDelayerVariables(tc.wdelayerVars)
+	assert.Equal(t, tc.wdelayerVars, api.status.WithdrawalDelayer)
 }

 func TestSetAuctionVariables(t *testing.T) {
-	stateAPIUpdater.SetSCVars(&common.SCVariablesPtr{Auction: &tc.auctionVars})
-	require.NoError(t, stateAPIUpdater.Store())
-	ni, err := api.h.GetNodeInfoAPI()
-	require.NoError(t, err)
-	assertEqualAuctionVariables(t, tc.auctionVars, ni.StateAPI.Auction)
+	auctionVars := &common.AuctionVariables{}
+	assertEqualAuctionVariables(t, *auctionVars, api.status.Auction)
+	api.SetAuctionVariables(tc.auctionVars)
+	assertEqualAuctionVariables(t, tc.auctionVars, api.status.Auction)
 }

 func assertEqualAuctionVariables(t *testing.T, auctionVariables common.AuctionVariables, apiVariables historydb.AuctionVariablesAPI) {
@@ -88,6 +85,11 @@ func assertEqualAuctionVariables(t *testing.T, auctionVariables common.AuctionVa
 }

 func TestUpdateNetworkInfo(t *testing.T) {
+	status := &Network{}
+	assert.Equal(t, status.LastSyncBlock, api.status.Network.LastSyncBlock)
+	assert.Equal(t, status.LastBatch, api.status.Network.LastBatch)
+	assert.Equal(t, status.CurrentSlot, api.status.Network.CurrentSlot)
+	assert.Equal(t, status.NextForgers, api.status.Network.NextForgers)
 	lastBlock := tc.blocks[3]
 	lastBatchNum := common.BatchNum(3)
 	currentSlotNum := int64(1)
@@ -116,80 +118,62 @@ func TestUpdateNetworkInfo(t *testing.T) {
 	err := api.h.AddBucketUpdatesTest(api.h.DB(), bucketUpdates)
 	require.NoError(t, err)

-	err = stateAPIUpdater.UpdateNetworkInfo(lastBlock, lastBlock, lastBatchNum, currentSlotNum)
-	require.NoError(t, err)
-	require.NoError(t, stateAPIUpdater.Store())
-	ni, err := api.h.GetNodeInfoAPI()
-	require.NoError(t, err)
-	assert.Equal(t, lastBlock.Num, ni.StateAPI.Network.LastSyncBlock)
-	assert.Equal(t, lastBatchNum, ni.StateAPI.Network.LastBatch.BatchNum)
-	assert.Equal(t, currentSlotNum, ni.StateAPI.Network.CurrentSlot)
-	assert.Equal(t, int(ni.StateAPI.Auction.ClosedAuctionSlots)+1, len(ni.StateAPI.Network.NextForgers))
-	assert.Equal(t, ni.StateAPI.Rollup.Buckets[0].Withdrawals, apitypes.NewBigIntStr(big.NewInt(123)))
-	assert.Equal(t, ni.StateAPI.Rollup.Buckets[2].Withdrawals, apitypes.NewBigIntStr(big.NewInt(43)))
+	err = api.UpdateNetworkInfo(lastBlock, lastBlock, lastBatchNum, currentSlotNum)
+	assert.NoError(t, err)
+	assert.Equal(t, lastBlock.Num, api.status.Network.LastSyncBlock)
+	assert.Equal(t, lastBatchNum, api.status.Network.LastBatch.BatchNum)
+	assert.Equal(t, currentSlotNum, api.status.Network.CurrentSlot)
+	assert.Equal(t, int(api.status.Auction.ClosedAuctionSlots)+1, len(api.status.Network.NextForgers))
+	assert.Equal(t, api.status.Rollup.Buckets[0].Withdrawals, apitypes.NewBigIntStr(big.NewInt(123)))
+	assert.Equal(t, api.status.Rollup.Buckets[2].Withdrawals, apitypes.NewBigIntStr(big.NewInt(43)))
 }

 func TestUpdateMetrics(t *testing.T) {
 	// Update Metrics needs api.status.Network.LastBatch.BatchNum to be updated
 	lastBlock := tc.blocks[3]
-	lastBatchNum := common.BatchNum(12)
+	lastBatchNum := common.BatchNum(3)
 	currentSlotNum := int64(1)
-	err := stateAPIUpdater.UpdateNetworkInfo(lastBlock, lastBlock, lastBatchNum, currentSlotNum)
-	require.NoError(t, err)
+	err := api.UpdateNetworkInfo(lastBlock, lastBlock, lastBatchNum, currentSlotNum)
+	assert.NoError(t, err)

-	err = stateAPIUpdater.UpdateMetrics()
-	require.NoError(t, err)
-	require.NoError(t, stateAPIUpdater.Store())
-	ni, err := api.h.GetNodeInfoAPI()
-	require.NoError(t, err)
-	assert.Greater(t, ni.StateAPI.Metrics.TransactionsPerBatch, float64(0))
-	assert.Greater(t, ni.StateAPI.Metrics.BatchFrequency, float64(0))
-	assert.Greater(t, ni.StateAPI.Metrics.TransactionsPerSecond, float64(0))
-	assert.Greater(t, ni.StateAPI.Metrics.TotalAccounts, int64(0))
-	assert.Greater(t, ni.StateAPI.Metrics.TotalBJJs, int64(0))
-	assert.Greater(t, ni.StateAPI.Metrics.AvgTransactionFee, float64(0))
+	err = api.UpdateMetrics()
+	assert.NoError(t, err)
+	assert.Greater(t, api.status.Metrics.TransactionsPerBatch, float64(0))
+	assert.Greater(t, api.status.Metrics.BatchFrequency, float64(0))
+	assert.Greater(t, api.status.Metrics.TransactionsPerSecond, float64(0))
+	assert.Greater(t, api.status.Metrics.TotalAccounts, int64(0))
+	assert.Greater(t, api.status.Metrics.TotalBJJs, int64(0))
+	assert.Greater(t, api.status.Metrics.AvgTransactionFee, float64(0))
 }

 func TestUpdateRecommendedFee(t *testing.T) {
-	err := stateAPIUpdater.UpdateRecommendedFee()
-	require.NoError(t, err)
-	require.NoError(t, stateAPIUpdater.Store())
-	var minFeeUSD float64
-	if api.l2 != nil {
-		minFeeUSD = api.l2.MinFeeUSD()
-	}
-	ni, err := api.h.GetNodeInfoAPI()
-	require.NoError(t, err)
-	assert.Greater(t, ni.StateAPI.RecommendedFee.ExistingAccount, minFeeUSD)
-	assert.Equal(t, ni.StateAPI.RecommendedFee.CreatesAccount,
-		ni.StateAPI.RecommendedFee.ExistingAccount*
-			historydb.CreateAccountExtraFeePercentage)
-	assert.Equal(t, ni.StateAPI.RecommendedFee.CreatesAccountInternal,
-		ni.StateAPI.RecommendedFee.ExistingAccount*
-			historydb.CreateAccountInternalExtraFeePercentage)
+	err := api.UpdateRecommendedFee()
+	assert.NoError(t, err)
+	assert.Greater(t, api.status.RecommendedFee.ExistingAccount, float64(0))
+	assert.Equal(t, api.status.RecommendedFee.CreatesAccount,
+		api.status.RecommendedFee.ExistingAccount*createAccountExtraFeePercentage)
+	assert.Equal(t, api.status.RecommendedFee.CreatesAccountAndRegister,
+		api.status.RecommendedFee.ExistingAccount*createAccountInternalExtraFeePercentage)
 }

 func TestGetState(t *testing.T) {
 	lastBlock := tc.blocks[3]
-	lastBatchNum := common.BatchNum(12)
+	lastBatchNum := common.BatchNum(3)
 	currentSlotNum := int64(1)
-	stateAPIUpdater.SetSCVars(&common.SCVariablesPtr{
-		Rollup:   &tc.rollupVars,
-		Auction:  &tc.auctionVars,
-		WDelayer: &tc.wdelayerVars,
-	})
-	err := stateAPIUpdater.UpdateNetworkInfo(lastBlock, lastBlock, lastBatchNum, currentSlotNum)
-	require.NoError(t, err)
-	err = stateAPIUpdater.UpdateMetrics()
-	require.NoError(t, err)
-	err = stateAPIUpdater.UpdateRecommendedFee()
-	require.NoError(t, err)
-	require.NoError(t, stateAPIUpdater.Store())
+	api.SetRollupVariables(tc.rollupVars)
+	api.SetWDelayerVariables(tc.wdelayerVars)
+	api.SetAuctionVariables(tc.auctionVars)
+	err := api.UpdateNetworkInfo(lastBlock, lastBlock, lastBatchNum, currentSlotNum)
+	assert.NoError(t, err)
+	err = api.UpdateMetrics()
+	assert.NoError(t, err)
+	err = api.UpdateRecommendedFee()
+	assert.NoError(t, err)

 	endpoint := apiURL + "state"
 	var status testStatus

-	require.NoError(t, doGoodReq("GET", endpoint, nil, &status))
+	assert.NoError(t, doGoodReq("GET", endpoint, nil, &status))

 	// SC vars
 	// UpdateNetworkInfo will overwrite buckets withdrawal values
@@ -217,14 +201,12 @@ func TestGetState(t *testing.T) {
 	// TODO: perform real asserts (not just greater than 0)
 	assert.Greater(t, status.RecommendedFee.ExistingAccount, float64(0))
 	assert.Equal(t, status.RecommendedFee.CreatesAccount,
-		status.RecommendedFee.ExistingAccount*
-			historydb.CreateAccountExtraFeePercentage)
-	assert.Equal(t, status.RecommendedFee.CreatesAccountInternal,
-		status.RecommendedFee.ExistingAccount*
-			historydb.CreateAccountInternalExtraFeePercentage)
+		status.RecommendedFee.ExistingAccount*createAccountExtraFeePercentage)
+	assert.Equal(t, status.RecommendedFee.CreatesAccountAndRegister,
+		status.RecommendedFee.ExistingAccount*createAccountInternalExtraFeePercentage)
 }

-func assertNextForgers(t *testing.T, expected, actual []historydb.NextForgerAPI) {
+func assertNextForgers(t *testing.T, expected, actual []NextForger) {
 	assert.Equal(t, len(expected), len(actual))
 	for i := range expected {
 		// ignore timestamps and other metadata
--- a/api/swagger.yml
+++ b/api/swagger.yml
@@ -1329,6 +1329,13 @@ components:
          type: string
          description: Moment in which the transaction was added to the pool.
          format: date-time
+        batchNum:
+          type: integer
+          description: Identifier of a batch. Every new forged batch increases by one the batchNum, starting at 0.
+          minimum: 0
+          maximum: 4294967295
+          nullable: true
+          example: null
        requestFromAccountIndex:
          type: string
          description: >-
@@ -1383,6 +1390,7 @@ components:
          $ref: '#/components/schemas/Token'
      example:
        amount: '100000000000000'
+        batchNum: 
        fee: 0
        fromAccountIndex: hez:SCC:256
        fromBJJ: hez:r_trOasVEk0zNaalOoS9aLedu6mO7jI5XTIPu_zGXoyn
@@ -1430,6 +1438,7 @@ components:
        - info
        - signature
        - timestamp
+        - batchNum
        - requestFromAccountIndex
        - requestToAccountIndex
        - requestToHezEthereumAddress
@@ -2569,21 +2578,6 @@ components:
      description: List of next coordinators to forge.
      items: 
        $ref: '#/components/schemas/NextForger'
-    NodeConfig:
-      type: object
-      description: Configuration of the coordinator node. Note that this is specific for each coordinator.
-      properties:
-        forgeDelay:
-          type: number
-          description: |
-            Delay in seconds after which a batch is forged if the slot is
-            already committed. If set to 0s, the coordinator will continuously
-            forge at the maximum rate. Note that this is a configuration parameter of a node,
-            so each coordinator may have a different value.
-          example: 193.4
-      additionalProperties: false
-      required: 
-        - forgeDelay
    State:
      type: object
      description: Gobal variables of the network
@@ -2600,8 +2594,6 @@ components:
          $ref: '#/components/schemas/StateWithdrawDelayer'
        recommendedFee:
          $ref: '#/components/schemas/RecommendedFee'
-        nodeConfig:
-          $ref: '#/components/schemas/NodeConfig'
      additionalProperties: false
      required: 
        - network
@@ -2610,7 +2602,6 @@ components:
        - auction
        - withdrawalDelayer
        - recommendedFee
-        - nodeConfig
    StateNetwork:
      type: object
      description: Gobal statistics of the network
@@ -2821,10 +2812,6 @@ components:
          type: number
          description: Average fee percentage paid for L2 transactions in the last 24 hours.
          example: 1.54
-        estimatedTimeToForgeL1:
-          type: number
-          description: Estimated time needed to forge a L1 transaction, from the time it's added on the smart contract, until it's actualy forged. In seconds.
-          example: 193.4
      additionalProperties: false
      required:
        - transactionsPerBatch
@@ -2833,7 +2820,6 @@ components:
        - totalAccounts
        - totalBJJs
        - avgTransactionFee
-        - estimatedTimeToForgeL1
    PendingItems:
      type: integer
      description: Amount of items that will be returned in subsequent calls to the endpoint, as long as they are done with same filters. When the value is 0 it means that all items have been sent.
--- a/api/token.go
+++ b/api/token.go
@@ -53,7 +53,7 @@ func (a *API) getTokens(c *gin.Context) {
 		return
 	}

-	// Build successful response
+	// Build succesfull response
 	type tokensResponse struct {
 		Tokens       []historydb.TokenWithUSD `json:"tokens"`
 		PendingItems uint64                   `json:"pendingItems"`
--- a/api/txshistory.go
+++ b/api/txshistory.go
@@ -42,7 +42,7 @@ func (a *API) getHistoryTxs(c *gin.Context) {
 		return
 	}

-	// Build successful response
+	// Build succesfull response
 	type txsResponse struct {
 		Txs          []historydb.TxAPI `json:"transactions"`
 		PendingItems uint64            `json:"pendingItems"`
@@ -66,6 +66,6 @@ func (a *API) getHistoryTx(c *gin.Context) {
 		retSQLErr(err, c)
 		return
 	}
-	// Build successful response
+	// Build succesfull response
 	c.JSON(http.StatusOK, tx)
 }
--- a/api/txshistory_test.go
+++ b/api/txshistory_test.go
@@ -455,7 +455,7 @@ func TestGetHistoryTx(t *testing.T) {
 	// 400, due invalid TxID
 	err := doBadReq("GET", endpoint+"0x001", nil, 400)
 	assert.NoError(t, err)
-	// 404, due nonexistent TxID in DB
+	// 404, due inexistent TxID in DB
 	err = doBadReq("GET", endpoint+"0x00eb5e95e1ce5e9f6c4ed402d415e8d0bdd7664769cfd2064d28da04a2c76be432", nil, 404)
 	assert.NoError(t, err)
 }
--- a/api/txspool.go
+++ b/api/txspool.go
@@ -51,7 +51,7 @@ func (a *API) getPoolTx(c *gin.Context) {
 		retSQLErr(err, c)
 		return
 	}
-	// Build successful response
+	// Build succesfull response
 	c.JSON(http.StatusOK, tx)
 }

@@ -179,7 +179,7 @@ func (a *API) verifyPoolL2TxWrite(txw *l2db.PoolL2TxWrite) error {
 	// Get public key
 	account, err := a.h.GetCommonAccountAPI(poolTx.FromIdx)
 	if err != nil {
-		return tracerr.Wrap(fmt.Errorf("Error getting from account: %w", err))
+		return tracerr.Wrap(err)
 	}
 	// Validate TokenID
 	if poolTx.TokenID != account.TokenID {
--- a/api/txspool_test.go
+++ b/api/txspool_test.go
@@ -2,15 +2,10 @@ package api

 import (
 	"bytes"
-	"crypto/ecdsa"
-	"encoding/binary"
-	"encoding/hex"
 	"encoding/json"
-	"math/big"
 	"testing"
 	"time"

-	ethCrypto "github.com/ethereum/go-ethereum/crypto"
 	"github.com/hermeznetwork/hermez-node/common"
 	"github.com/hermeznetwork/hermez-node/db/historydb"
 	"github.com/iden3/go-iden3-crypto/babyjub"
@@ -240,7 +235,7 @@ func TestPoolTxs(t *testing.T) {
 	// 400, due invalid TxID
 	err = doBadReq("GET", endpoint+"0xG2241b6f2b1dd772dba391f4a1a3407c7c21f598d86e2585a14e616fb4a255f823", nil, 400)
 	require.NoError(t, err)
-	// 404, due nonexistent TxID in DB
+	// 404, due inexistent TxID in DB
 	err = doBadReq("GET", endpoint+"0x02241b6f2b1dd772dba391f4a1a3407c7c21f598d86e2585a14e616fb4a255f823", nil, 404)
 	require.NoError(t, err)
 }
@@ -262,73 +257,3 @@ func assertPoolTx(t *testing.T, expected, actual testPoolTxReceive) {
 	}
 	assert.Equal(t, expected, actual)
 }
-
-// TestAllTosNull test that the API doesn't accept txs with all the TOs set to null (to eth, to bjj, to idx)
-func TestAllTosNull(t *testing.T) {
-	// Generate account:
-	// Ethereum private key
-	var key ecdsa.PrivateKey
-	key.D = big.NewInt(int64(4444)) // only for testing
-	key.PublicKey.X, key.PublicKey.Y = ethCrypto.S256().ScalarBaseMult(key.D.Bytes())
-	key.Curve = ethCrypto.S256()
-	addr := ethCrypto.PubkeyToAddress(key.PublicKey)
-	// BJJ private key
-	var sk babyjub.PrivateKey
-	var iBytes [8]byte
-	binary.LittleEndian.PutUint64(iBytes[:], 4444)
-	copy(sk[:], iBytes[:]) // only for testing
-	account := common.Account{
-		Idx:      4444,
-		TokenID:  0,
-		BatchNum: 1,
-		BJJ:      sk.Public().Compress(),
-		EthAddr:  addr,
-		Nonce:    0,
-		Balance:  big.NewInt(1000000),
-	}
-	// Add account to history DB (required to verify signature)
-	err := api.h.AddAccounts([]common.Account{account})
-	assert.NoError(t, err)
-	// Genrate tx with all tos set to nil (to eth, to bjj, to idx)
-	tx := common.PoolL2Tx{
-		FromIdx: account.Idx,
-		TokenID: account.TokenID,
-		Amount:  big.NewInt(1000),
-		Fee:     200,
-		Nonce:   0,
-	}
-	// Set idx and type manually, and check that the function doesn't allow it
-	_, err = common.NewPoolL2Tx(&tx)
-	assert.Error(t, err)
-	tx.Type = common.TxTypeTransfer
-	var txID common.TxID
-	txIDRaw, err := hex.DecodeString("02e66e24f7f25272906647c8fd1d7fe8acf3cf3e9b38ffc9f94bbb5090dc275073")
-	assert.NoError(t, err)
-	copy(txID[:], txIDRaw)
-	tx.TxID = txID
-	// Sign tx
-	toSign, err := tx.HashToSign(0)
-	assert.NoError(t, err)
-	sig := sk.SignPoseidon(toSign)
-	tx.Signature = sig.Compress()
-	// Transform common.PoolL2Tx ==> testPoolTxSend
-	txToSend := testPoolTxSend{
-		TxID:      tx.TxID,
-		Type:      tx.Type,
-		TokenID:   tx.TokenID,
-		FromIdx:   idxToHez(tx.FromIdx, "ETH"),
-		Amount:    tx.Amount.String(),
-		Fee:       tx.Fee,
-		Nonce:     tx.Nonce,
-		Signature: tx.Signature,
-	}
-	// Send tx to the API
-	jsonTxBytes, err := json.Marshal(txToSend)
-	require.NoError(t, err)
-	jsonTxReader := bytes.NewReader(jsonTxBytes)
-	err = doBadReq("POST", apiURL+"transactions-pool", jsonTxReader, 400)
-	require.NoError(t, err)
-	// Clean historyDB: the added account shouldn't be there for other tests
-	_, err = api.h.DB().DB.Exec("delete from account where idx = 4444")
-	assert.NoError(t, err)
-}
--- a/apitypes/apitypes.go
+++ b/apitypes/apitypes.go
@@ -4,6 +4,7 @@ import (
 	"database/sql/driver"
 	"encoding/base64"
 	"encoding/hex"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"math/big"
@@ -18,10 +19,7 @@ import (

 // BigIntStr is used to scan/value *big.Int directly into strings from/to sql DBs.
 // It assumes that *big.Int are inserted/fetched to/from the DB using the BigIntMeddler meddler
-// defined at github.com/hermeznetwork/hermez-node/db.  Since *big.Int is
-// stored as DECIMAL in SQL, there's no need to implement Scan()/Value()
-// because DECIMALS are encoded/decoded as strings by the sql driver, and
-// BigIntStr is already a string.
+// defined at github.com/hermeznetwork/hermez-node/db
 type BigIntStr string

 // NewBigIntStr creates a *BigIntStr from a *big.Int.
@@ -34,6 +32,34 @@ func NewBigIntStr(bigInt *big.Int) *BigIntStr {
 	return &bigIntStr
 }

+// Scan implements Scanner for database/sql
+func (b *BigIntStr) Scan(src interface{}) error {
+	srcBytes, ok := src.([]byte)
+	if !ok {
+		return tracerr.Wrap(fmt.Errorf("can't scan %T into apitypes.BigIntStr", src))
+	}
+	// bytes to *big.Int
+	bigInt := new(big.Int).SetBytes(srcBytes)
+	// *big.Int to BigIntStr
+	bigIntStr := NewBigIntStr(bigInt)
+	if bigIntStr == nil {
+		return nil
+	}
+	*b = *bigIntStr
+	return nil
+}
+
+// Value implements valuer for database/sql
+func (b BigIntStr) Value() (driver.Value, error) {
+	// string to *big.Int
+	bigInt, ok := new(big.Int).SetString(string(b), 10)
+	if !ok || bigInt == nil {
+		return nil, tracerr.Wrap(errors.New("invalid representation of a *big.Int"))
+	}
+	// *big.Int to bytes
+	return bigInt.Bytes(), nil
+}
+
 // StrBigInt is used to unmarshal BigIntStr directly into an alias of big.Int
 type StrBigInt big.Int

@@ -47,19 +73,25 @@ func (s *StrBigInt) UnmarshalText(text []byte) error {
 	return nil
 }

-// CollectedFeesAPI is send common.batch.CollectedFee through the API
-type CollectedFeesAPI map[common.TokenID]BigIntStr
+// CollectedFees is used to retrieve common.batch.CollectedFee from the DB
+type CollectedFees map[common.TokenID]BigIntStr

-// NewCollectedFeesAPI creates a new CollectedFeesAPI from a *big.Int map
-func NewCollectedFeesAPI(m map[common.TokenID]*big.Int) CollectedFeesAPI {
-	c := CollectedFeesAPI(make(map[common.TokenID]BigIntStr))
-	for k, v := range m {
-		c[k] = *NewBigIntStr(v)
+// UnmarshalJSON unmarshals a json representation of map[common.TokenID]*big.Int
+func (c *CollectedFees) UnmarshalJSON(text []byte) error {
+	bigIntMap := make(map[common.TokenID]*big.Int)
+	if err := json.Unmarshal(text, &bigIntMap); err != nil {
+		return tracerr.Wrap(err)
 	}
-	return c
+	*c = CollectedFees(make(map[common.TokenID]BigIntStr))
+	for k, v := range bigIntMap {
+		bStr := NewBigIntStr(v)
+		(CollectedFees(*c)[k]) = *bStr
+	}
+	// *c = CollectedFees(bStrMap)
+	return nil
 }

-// HezEthAddr is used to scan/value Ethereum Address directly into strings that follow the Ethereum address hez format (^hez:0x[a-fA-F0-9]{40}$) from/to sql DBs.
+// HezEthAddr is used to scan/value Ethereum Address directly into strings that follow the Ethereum address hez fotmat (^hez:0x[a-fA-F0-9]{40}$) from/to sql DBs.
 // It assumes that Ethereum Address are inserted/fetched to/from the DB using the default Scan/Value interface
 type HezEthAddr string

@@ -111,7 +143,7 @@ func (s *StrHezEthAddr) UnmarshalText(text []byte) error {
 	return nil
 }

-// HezBJJ is used to scan/value *babyjub.PublicKeyComp directly into strings that follow the BJJ public key hez format (^hez:[A-Za-z0-9_-]{44}$) from/to sql DBs.
+// HezBJJ is used to scan/value *babyjub.PublicKeyComp directly into strings that follow the BJJ public key hez fotmat (^hez:[A-Za-z0-9_-]{44}$) from/to sql DBs.
 // It assumes that *babyjub.PublicKeyComp are inserted/fetched to/from the DB using the default Scan/Value interface
 type HezBJJ string

@@ -184,7 +216,7 @@ func (b HezBJJ) Value() (driver.Value, error) {
 // StrHezBJJ is used to unmarshal HezBJJ directly into an alias of babyjub.PublicKeyComp
 type StrHezBJJ babyjub.PublicKeyComp

-// UnmarshalText unmarshalls a StrHezBJJ
+// UnmarshalText unmarshals a StrHezBJJ
 func (s *StrHezBJJ) UnmarshalText(text []byte) error {
 	bjj, err := hezStrToBJJ(string(text))
 	if err != nil {
@@ -194,8 +226,8 @@ func (s *StrHezBJJ) UnmarshalText(text []byte) error {
 	return nil
 }

-// HezIdx is used to value common.Idx directly into strings that follow the Idx key hez format (hez:tokenSymbol:idx) to sql DBs.
-// Note that this can only be used to insert to DB since there is no way to automatically read from the DB since it needs the tokenSymbol
+// HezIdx is used to value common.Idx directly into strings that follow the Idx key hez fotmat (hez:tokenSymbol:idx) to sql DBs.
+// Note that this can only be used to insert to DB since there is no way to automaticaly read from the DB since it needs the tokenSymbol
 type HezIdx string

 // StrHezIdx is used to unmarshal HezIdx directly into an alias of common.Idx
--- a/batchbuilder/batchbuilder.go
+++ b/batchbuilder/batchbuilder.go
@@ -28,8 +28,7 @@ type ConfigBatch struct {

 // NewBatchBuilder constructs a new BatchBuilder, and executes the bb.Reset
 // method
-func NewBatchBuilder(dbpath string, synchronizerStateDB *statedb.StateDB, batchNum common.BatchNum,
-	nLevels uint64) (*BatchBuilder, error) {
+func NewBatchBuilder(dbpath string, synchronizerStateDB *statedb.StateDB, batchNum common.BatchNum, nLevels uint64) (*BatchBuilder, error) {
 	localStateDB, err := statedb.NewLocalStateDB(
 		statedb.Config{
 			Path:    dbpath,
--- a/batchbuilder/batchbuilder_test.go
+++ b/batchbuilder/batchbuilder_test.go
@@ -15,8 +15,7 @@ func TestBatchBuilder(t *testing.T) {
 	require.Nil(t, err)
 	defer assert.Nil(t, os.RemoveAll(dir))

-	synchDB, err := statedb.NewStateDB(statedb.Config{Path: dir, Keep: 128,
-		Type: statedb.TypeBatchBuilder, NLevels: 0})
+	synchDB, err := statedb.NewStateDB(statedb.Config{Path: dir, Keep: 128, Type: statedb.TypeBatchBuilder, NLevels: 0})
 	assert.Nil(t, err)

 	bbDir, err := ioutil.TempDir("", "tmpBatchBuilderDB")
--- a/cli/node/README.md
+++ b/cli/node/README.md
@@ -8,7 +8,7 @@ The `hermez-node` has been tested with go version 1.14

 ## Usage

-```shell
+```
 NAME:
   hermez-node - A new cli application

@@ -16,18 +16,18 @@ USAGE:
   node [global options] command [command options] [arguments...]

 VERSION:
-   v0.1.0-6-gd8a50c5
+   0.1.0-alpha

 COMMANDS:
-   version    Show the application version
   importkey  Import ethereum private key
   genbjj     Generate a new BabyJubJub key
-   wipesql    Wipe the SQL DB (HistoryDB and L2DB) and the StateDBs, leaving the DB in a clean state
+   wipesql    Wipe the SQL DB (HistoryDB and L2DB), leaving the DB in a clean state
   run        Run the hermez-node in the indicated mode
-   discard    Discard blocks up to a specified block number
   help, h    Shows a list of commands or help for one command

 GLOBAL OPTIONS:
+   --mode MODE    Set node MODE (can be "sync" or "coord")
+   --cfg FILE     Node configuration FILE
   --help, -h     show help (default: false)
   --version, -v  print the version (default: false)
 ```
@@ -75,7 +75,7 @@ when running the coordinator in sync mode

 Building the node requires using the packr utility to bundle the database
 migrations inside the resulting binary.  Install the packr utility with:
-```shell
+```
 cd /tmp && go get -u github.com/gobuffalo/packr/v2/packr2 && cd -
 ```

@@ -83,7 +83,7 @@ Make sure your `$PATH` contains `$GOPATH/bin`, otherwise the packr utility will
 not be found.

 Now build the node executable:
-```shell
+```
 cd ../../db && packr2 && cd -
 go build .
 cd ../../db && packr2 clean && cd -
@@ -98,40 +98,35 @@ run the following examples by replacing `./node` with `go run .` and executing
 them in the `cli/node` directory to build from source and run at the same time.

 Run the node in mode synchronizer:
-```shell
-./node run --mode sync --cfg cfg.buidler.toml
+```
+./node --mode sync --cfg cfg.buidler.toml run
 ```

 Run the node in mode coordinator:
-```shell
-./node run --mode coord --cfg cfg.buidler.toml
+```
+./node --mode coord --cfg cfg.buidler.toml run
 ```

 Import an ethereum private key into the keystore:
-```shell
-./node importkey --mode coord --cfg cfg.buidler.toml --privatekey  0x618b35096c477aab18b11a752be619f0023a539bb02dd6c813477a6211916cde
+```
+./node --mode coord --cfg cfg.buidler.toml importkey --privatekey  0x618b35096c477aab18b11a752be619f0023a539bb02dd6c813477a6211916cde
 ```

 Generate a new BabyJubJub key pair:
-```shell
-./node genbjj
 ```
-
-Check the binary version:
-```shell
-./node version
+./node --mode coord --cfg cfg.buidler.toml genbjj
 ```

 Wipe the entier SQL database (this will destroy all synchronized and pool
 data):
-```shell
-./node wipesql --mode coord --cfg cfg.buidler.toml 
+```
+./node --mode coord --cfg cfg.buidler.toml wipesql
 ```

 Discard all synchronized blocks and associated state up to a given block
 number.  This command is useful in case the synchronizer reaches an invalid
 state and you want to roll back a few blocks and try again (maybe with some
 fixes in the code).
-```shell
-./node discard --mode coord --cfg cfg.buidler.toml --block 8061330
+```
+./node --mode coord --cfg cfg.buidler.toml discard --block 8061330
 ```
--- a/cli/node/cfg.api.toml
+++ b/cli/node/cfg.api.toml
@@ -1,24 +0,0 @@
-[API]
-Address = "localhost:8386"
-Explorer = true
-MaxSQLConnections = 10
-SQLConnectionTimeout = "2s"
-
-[PostgreSQL]
-PortWrite     = 5432
-HostWrite     = "localhost"
-UserWrite     = "hermez"
-PasswordWrite = "yourpasswordhere"
-NameWrite     = "hermez"
-
-[Coordinator.L2DB]
-SafetyPeriod = 10
-MaxTxs       = 512
-TTL          = "24h"
-PurgeBatchDelay = 10
-InvalidateBatchDelay = 20
-PurgeBlockDelay = 10
-InvalidateBlockDelay = 20
-
-[Coordinator.API]
-Coordinator = true
--- a/cli/node/cfg.buidler.toml
+++ b/cli/node/cfg.buidler.toml
@@ -8,52 +8,23 @@ SQLConnectionTimeout = "2s"

 [PriceUpdater]
 Interval = "10s"
-URLBitfinexV2 = "https://api-pub.bitfinex.com/v2/"
-URLCoinGeckoV3 = "https://api.coingecko.com/api/v3/"
-# Available update methods:
-# - coingeckoV3 (recommended): get price by SC addr using coingecko API
-# - bitfinexV2: get price by token symbol using bitfinex API
-# - static (recommended for blacklisting tokens): use the given StaticValue to set the price (if not provided 0 will be used)
-# - ignore: don't update the price leave it as it is on the DB
-DefaultUpdateMethod = "coingeckoV3" # Update method used for all the tokens registered on the network, and not listed in [[PriceUpdater.TokensConfig]]
-[[PriceUpdater.TokensConfig]]
-UpdateMethod = "bitfinexV2"
-Symbol = "USDT"
-Addr = "0xdac17f958d2ee523a2206206994597c13d831ec7"
-[[PriceUpdater.TokensConfig]]
-UpdateMethod = "coingeckoV3"
-Symbol = "ETH"
-Addr = "0x0000000000000000000000000000000000000000"
-[[PriceUpdater.TokensConfig]]
-UpdateMethod = "static"
-Symbol = "UNI"
-Addr = "0x1f9840a85d5af5bf1d1762f925bdaddc4201f984"
-StaticValue = 30.12
-[[PriceUpdater.TokensConfig]]
-UpdateMethod = "ignore"
-Symbol = "SUSHI"
-Addr = "0x6b3595068778dd592e39a122f4f5a5cf09c90fe2"
+URL = "https://api-pub.bitfinex.com/v2/"
+Type = "bitfinexV2"

 [Debug]
 APIAddress = "localhost:12345"
 MeddlerLogs = true
-GinDebugMode = true

 [StateDB]
 Path = "/tmp/iden3-test/hermez/statedb"
 Keep = 256

 [PostgreSQL]
-PortWrite     = 5432
-HostWrite     = "localhost"
-UserWrite     = "hermez"
-PasswordWrite = "yourpasswordhere"
-NameWrite     = "hermez"
-# PortRead     = 5432
-# HostRead     = "localhost"
-# UserRead     = "hermez"
-# PasswordRead = "yourpasswordhere"
-# NameRead     = "hermez"
+Port     = 5432
+Host     = "localhost"
+User     = "hermez"
+Password = "yourpasswordhere"
+Name     = "hermez"

 [Web3]
 URL = "http://localhost:8545"
@@ -74,7 +45,6 @@ ForgerAddress = "0x05c23b938a85ab26A36E6314a0D02080E9ca6BeD" # Non-Boot Coordina
 # ForgerAddressPrivateKey = "0x30f5fddb34cd4166adb2c6003fa6b18f380fd2341376be42cf1c7937004ac7a3"
 # ForgerAddress = "0xb4124ceb3451635dacedd11767f004d8a28c6ee7" # Boot Coordinator
 # ForgerAddressPrivateKey = "0xa8a54b2d8197bc0b19bb8a084031be71835580a01e70a45a13babd16c9bc1563"
-MinimumForgeAddressBalance = "0"
 ConfirmBlocks = 10
 L1BatchTimeoutPerc = 0.6
 StartSlotBlocksDelay = 2
@@ -86,8 +56,6 @@ SyncRetryInterval = "1s"
 ForgeDelay = "10s"
 ForgeNoTxsDelay = "0s"
 PurgeByExtDelInterval = "1m"
-MustForgeAtSlotDeadline = true
-IgnoreSlotCommitment = false

 [Coordinator.FeeAccount]
 Address = "0x56232B1c5B10038125Bc7345664B4AFD745bcF8E"
@@ -131,12 +99,6 @@ GasPriceIncPerc = 10
 Path = "/tmp/iden3-test/hermez/ethkeystore"
 Password = "yourpasswordhere"

-[Coordinator.EthClient.ForgeBatchGasCost]
-Fixed = 600000
-L1UserTx = 15000
-L1CoordTx = 8000
-L2Tx = 250
-
 [Coordinator.API]
 Coordinator = true

--- a/cli/node/main.go
+++ b/cli/node/main.go
@@ -5,22 +5,18 @@ import (
 	"fmt"
 	"os"
 	"os/signal"
-	"path"
 	"strings"

 	ethKeystore "github.com/ethereum/go-ethereum/accounts/keystore"
 	"github.com/ethereum/go-ethereum/crypto"
-	"github.com/hermeznetwork/hermez-node/common"
 	"github.com/hermeznetwork/hermez-node/config"
 	dbUtils "github.com/hermeznetwork/hermez-node/db"
 	"github.com/hermeznetwork/hermez-node/db/historydb"
-	"github.com/hermeznetwork/hermez-node/db/kvdb"
 	"github.com/hermeznetwork/hermez-node/db/l2db"
 	"github.com/hermeznetwork/hermez-node/log"
 	"github.com/hermeznetwork/hermez-node/node"
 	"github.com/hermeznetwork/tracerr"
 	"github.com/iden3/go-iden3-crypto/babyjub"
-	"github.com/jmoiron/sqlx"
 	"github.com/urfave/cli/v2"
 )

@@ -34,22 +30,6 @@ const (
 	modeCoord = "coord"
 )

-var (
-	// Version represents the program based on the git tag
-	Version = "v0.1.0"
-	// Build represents the program based on the git commit
-	Build = "dev"
-	// Date represents the date of application was built
-	Date = ""
-)
-
-func cmdVersion(c *cli.Context) error {
-	fmt.Printf("Version = \"%v\"\n", Version)
-	fmt.Printf("Build = \"%v\"\n", Build)
-	fmt.Printf("Date = \"%v\"\n", Date)
-	return nil
-}
-
 func cmdGenBJJ(c *cli.Context) error {
 	sk := babyjub.NewRandPrivKey()
 	skBuf := [32]byte(sk)
@@ -91,86 +71,6 @@ func cmdImportKey(c *cli.Context) error {
 	return nil
 }

-func resetStateDBs(cfg *Config, batchNum common.BatchNum) error {
-	log.Infof("Reset Synchronizer StateDB to batchNum %v...", batchNum)
-
-	// Manually make a checkpoint from batchNum to current to force current
-	// to be a valid checkpoint.  This is useful because in case of a
-	// crash, current can be corrupted and the first thing that
-	// `kvdb.NewKVDB` does is read the current checkpoint, which wouldn't
-	// succeed in case of corruption.
-	dbPath := cfg.node.StateDB.Path
-	source := path.Join(dbPath, fmt.Sprintf("%s%d", kvdb.PathBatchNum, batchNum))
-	current := path.Join(dbPath, kvdb.PathCurrent)
-	last := path.Join(dbPath, kvdb.PathLast)
-	if err := os.RemoveAll(last); err != nil {
-		return tracerr.Wrap(fmt.Errorf("os.RemoveAll: %w", err))
-	}
-	if batchNum == 0 {
-		if err := os.RemoveAll(current); err != nil {
-			return tracerr.Wrap(fmt.Errorf("os.RemoveAll: %w", err))
-		}
-	} else {
-		if err := kvdb.PebbleMakeCheckpoint(source, current); err != nil {
-			return tracerr.Wrap(fmt.Errorf("kvdb.PebbleMakeCheckpoint: %w", err))
-		}
-	}
-	db, err := kvdb.NewKVDB(kvdb.Config{
-		Path:        dbPath,
-		NoGapsCheck: true,
-		NoLast:      true,
-	})
-	if err != nil {
-		return tracerr.Wrap(fmt.Errorf("kvdb.NewKVDB: %w", err))
-	}
-	if err := db.Reset(batchNum); err != nil {
-		return tracerr.Wrap(fmt.Errorf("db.Reset: %w", err))
-	}
-
-	if cfg.mode == node.ModeCoordinator {
-		log.Infof("Wipe Coordinator StateDBs...")
-
-		// We wipe the Coordinator StateDBs entirely (by deleting
-		// current and resetting to batchNum 0) because the Coordinator
-		// StateDBs are always reset from Synchronizer when the
-		// coordinator pipeline starts.
-		dbPath := cfg.node.Coordinator.TxSelector.Path
-		current := path.Join(dbPath, kvdb.PathCurrent)
-		if err := os.RemoveAll(current); err != nil {
-			return tracerr.Wrap(fmt.Errorf("os.RemoveAll: %w", err))
-		}
-		db, err := kvdb.NewKVDB(kvdb.Config{
-			Path:        dbPath,
-			NoGapsCheck: true,
-			NoLast:      true,
-		})
-		if err != nil {
-			return tracerr.Wrap(fmt.Errorf("kvdb.NewKVDB: %w", err))
-		}
-		if err := db.Reset(0); err != nil {
-			return tracerr.Wrap(fmt.Errorf("db.Reset: %w", err))
-		}
-
-		dbPath = cfg.node.Coordinator.BatchBuilder.Path
-		current = path.Join(dbPath, kvdb.PathCurrent)
-		if err := os.RemoveAll(current); err != nil {
-			return tracerr.Wrap(fmt.Errorf("os.RemoveAll: %w", err))
-		}
-		db, err = kvdb.NewKVDB(kvdb.Config{
-			Path:        dbPath,
-			NoGapsCheck: true,
-			NoLast:      true,
-		})
-		if err != nil {
-			return tracerr.Wrap(fmt.Errorf("statedb.NewKVDB: %w", err))
-		}
-		if err := db.Reset(0); err != nil {
-			return tracerr.Wrap(fmt.Errorf("db.Reset: %w", err))
-		}
-	}
-	return nil
-}
-
 func cmdWipeSQL(c *cli.Context) error {
 	_cfg, err := parseCli(c)
 	if err != nil {
@@ -179,8 +79,7 @@ func cmdWipeSQL(c *cli.Context) error {
 	cfg := _cfg.node
 	yes := c.Bool(flagYes)
 	if !yes {
-		fmt.Print("*WARNING* Are you sure you want to delete " +
-			"the SQL DB and StateDBs? [y/N]: ")
+		fmt.Print("*WARNING* Are you sure you want to delete the SQL DB? [y/N]: ")
 		var input string
 		if _, err := fmt.Scanln(&input); err != nil {
 			return tracerr.Wrap(err)
@@ -191,28 +90,33 @@ func cmdWipeSQL(c *cli.Context) error {
 		}
 	}
 	db, err := dbUtils.ConnectSQLDB(
-		cfg.PostgreSQL.PortWrite,
-		cfg.PostgreSQL.HostWrite,
-		cfg.PostgreSQL.UserWrite,
-		cfg.PostgreSQL.PasswordWrite,
-		cfg.PostgreSQL.NameWrite,
+		cfg.PostgreSQL.Port,
+		cfg.PostgreSQL.Host,
+		cfg.PostgreSQL.User,
+		cfg.PostgreSQL.Password,
+		cfg.PostgreSQL.Name,
 	)
 	if err != nil {
 		return tracerr.Wrap(err)
 	}
 	log.Info("Wiping SQL DB...")
 	if err := dbUtils.MigrationsDown(db.DB); err != nil {
-		return tracerr.Wrap(fmt.Errorf("dbUtils.MigrationsDown: %w", err))
-	}
-
-	log.Info("Wiping StateDBs...")
-	if err := resetStateDBs(_cfg, 0); err != nil {
-		return tracerr.Wrap(fmt.Errorf("resetStateDBs: %w", err))
+		return tracerr.Wrap(err)
 	}
 	return nil
 }

-func waitSigInt() {
+func cmdRun(c *cli.Context) error {
+	cfg, err := parseCli(c)
+	if err != nil {
+		return tracerr.Wrap(fmt.Errorf("error parsing flags and config: %w", err))
+	}
+	node, err := node.NewNode(cfg.mode, cfg.node)
+	if err != nil {
+		return tracerr.Wrap(fmt.Errorf("error starting node: %w", err))
+	}
+	node.Start()
+
 	stopCh := make(chan interface{})

 	// catch ^C to send the stop signal
@@ -233,40 +137,11 @@ func waitSigInt() {
 		}
 	}()
 	<-stopCh
-}
-
-func cmdRun(c *cli.Context) error {
-	cfg, err := parseCli(c)
-	if err != nil {
-		return tracerr.Wrap(fmt.Errorf("error parsing flags and config: %w", err))
-	}
-	node, err := node.NewNode(cfg.mode, cfg.node)
-	if err != nil {
-		return tracerr.Wrap(fmt.Errorf("error starting node: %w", err))
-	}
-	node.Start()
-	waitSigInt()
 	node.Stop()

 	return nil
 }

-func cmdServeAPI(c *cli.Context) error {
-	cfg, err := parseCliAPIServer(c)
-	if err != nil {
-		return tracerr.Wrap(fmt.Errorf("error parsing flags and config: %w", err))
-	}
-	srv, err := node.NewAPIServer(cfg.mode, cfg.server)
-	if err != nil {
-		return tracerr.Wrap(fmt.Errorf("error starting api server: %w", err))
-	}
-	srv.Start()
-	waitSigInt()
-	srv.Stop()
-
-	return nil
-}
-
 func cmdDiscard(c *cli.Context) error {
 	_cfg, err := parseCli(c)
 	if err != nil {
@@ -276,36 +151,17 @@ func cmdDiscard(c *cli.Context) error {
 	blockNum := c.Int64(flagBlock)
 	log.Infof("Discarding all blocks up to block %v...", blockNum)

-	dbWrite, err := dbUtils.InitSQLDB(
-		cfg.PostgreSQL.PortWrite,
-		cfg.PostgreSQL.HostWrite,
-		cfg.PostgreSQL.UserWrite,
-		cfg.PostgreSQL.PasswordWrite,
-		cfg.PostgreSQL.NameWrite,
+	db, err := dbUtils.InitSQLDB(
+		cfg.PostgreSQL.Port,
+		cfg.PostgreSQL.Host,
+		cfg.PostgreSQL.User,
+		cfg.PostgreSQL.Password,
+		cfg.PostgreSQL.Name,
 	)
 	if err != nil {
 		return tracerr.Wrap(fmt.Errorf("dbUtils.InitSQLDB: %w", err))
 	}
-	var dbRead *sqlx.DB
-	if cfg.PostgreSQL.HostRead == "" {
-		dbRead = dbWrite
-	} else if cfg.PostgreSQL.HostRead == cfg.PostgreSQL.HostWrite {
-		return tracerr.Wrap(fmt.Errorf(
-			"PostgreSQL.HostRead and PostgreSQL.HostWrite must be different",
-		))
-	} else {
-		dbRead, err = dbUtils.InitSQLDB(
-			cfg.PostgreSQL.PortRead,
-			cfg.PostgreSQL.HostRead,
-			cfg.PostgreSQL.UserRead,
-			cfg.PostgreSQL.PasswordRead,
-			cfg.PostgreSQL.NameRead,
-		)
-		if err != nil {
-			return tracerr.Wrap(fmt.Errorf("dbUtils.InitSQLDB: %w", err))
-		}
-	}
-	historyDB := historydb.NewHistoryDB(dbRead, dbWrite, nil)
+	historyDB := historydb.NewHistoryDB(db, nil)
 	if err := historyDB.Reorg(blockNum); err != nil {
 		return tracerr.Wrap(fmt.Errorf("historyDB.Reorg: %w", err))
 	}
@@ -314,7 +170,7 @@ func cmdDiscard(c *cli.Context) error {
 		return tracerr.Wrap(fmt.Errorf("historyDB.GetLastBatchNum: %w", err))
 	}
 	l2DB := l2db.NewL2DB(
-		dbRead, dbWrite,
+		db,
 		cfg.Coordinator.L2DB.SafetyPeriod,
 		cfg.Coordinator.L2DB.MaxTxs,
 		cfg.Coordinator.L2DB.MinFeeUSD,
@@ -325,11 +181,6 @@ func cmdDiscard(c *cli.Context) error {
 		return tracerr.Wrap(fmt.Errorf("l2DB.Reorg: %w", err))
 	}

-	log.Info("Resetting StateDBs...")
-	if err := resetStateDBs(_cfg, batchNum); err != nil {
-		return tracerr.Wrap(fmt.Errorf("resetStateDBs: %w", err))
-	}
-
 	return nil
 }

@@ -354,59 +205,20 @@ func getConfig(c *cli.Context) (*Config, error) {
 	var cfg Config
 	mode := c.String(flagMode)
 	nodeCfgPath := c.String(flagCfg)
+	if nodeCfgPath == "" {
+		return nil, tracerr.Wrap(fmt.Errorf("required flag \"%v\" not set", flagCfg))
+	}
 	var err error
 	switch mode {
 	case modeSync:
 		cfg.mode = node.ModeSynchronizer
-		cfg.node, err = config.LoadNode(nodeCfgPath, false)
+		cfg.node, err = config.LoadNode(nodeCfgPath)
 		if err != nil {
 			return nil, tracerr.Wrap(err)
 		}
 	case modeCoord:
 		cfg.mode = node.ModeCoordinator
-		cfg.node, err = config.LoadNode(nodeCfgPath, true)
-		if err != nil {
-			return nil, tracerr.Wrap(err)
-		}
-	default:
-		return nil, tracerr.Wrap(fmt.Errorf("invalid mode \"%v\"", mode))
-	}
-
-	return &cfg, nil
-}
-
-// ConfigAPIServer is the configuration of the api server execution
-type ConfigAPIServer struct {
-	mode   node.Mode
-	server *config.APIServer
-}
-
-func parseCliAPIServer(c *cli.Context) (*ConfigAPIServer, error) {
-	cfg, err := getConfigAPIServer(c)
-	if err != nil {
-		if err := cli.ShowAppHelp(c); err != nil {
-			panic(err)
-		}
-		return nil, tracerr.Wrap(err)
-	}
-	return cfg, nil
-}
-
-func getConfigAPIServer(c *cli.Context) (*ConfigAPIServer, error) {
-	var cfg ConfigAPIServer
-	mode := c.String(flagMode)
-	nodeCfgPath := c.String(flagCfg)
-	var err error
-	switch mode {
-	case modeSync:
-		cfg.mode = node.ModeSynchronizer
-		cfg.server, err = config.LoadAPIServer(nodeCfgPath, false)
-		if err != nil {
-			return nil, tracerr.Wrap(err)
-		}
-	case modeCoord:
-		cfg.mode = node.ModeCoordinator
-		cfg.server, err = config.LoadAPIServer(nodeCfgPath, true)
+		cfg.node, err = config.LoadCoordinator(nodeCfgPath)
 		if err != nil {
 			return nil, tracerr.Wrap(err)
 		}
@@ -420,8 +232,8 @@ func getConfigAPIServer(c *cli.Context) (*ConfigAPIServer, error) {
 func main() {
 	app := cli.NewApp()
 	app.Name = "hermez-node"
-	app.Version = Version
-	flags := []cli.Flag{
+	app.Version = "0.1.0-alpha"
+	app.Flags = []cli.Flag{
 		&cli.StringFlag{
 			Name:     flagMode,
 			Usage:    fmt.Sprintf("Set node `MODE` (can be \"%v\" or \"%v\")", modeSync, modeCoord),
@@ -435,23 +247,17 @@ func main() {
 	}

 	app.Commands = []*cli.Command{
-		{
-			Name:    "version",
-			Aliases: []string{},
-			Usage:   "Show the application version and build",
-			Action:  cmdVersion,
-		},
 		{
 			Name:    "importkey",
 			Aliases: []string{},
 			Usage:   "Import ethereum private key",
 			Action:  cmdImportKey,
-			Flags: append(flags,
+			Flags: []cli.Flag{
 				&cli.StringFlag{
 					Name:     flagSK,
 					Usage:    "ethereum `PRIVATE_KEY` in hex",
 					Required: true,
-				}),
+				}},
 		},
 		{
 			Name:    "genbjj",
@@ -462,40 +268,33 @@ func main() {
 		{
 			Name:    "wipesql",
 			Aliases: []string{},
-			Usage: "Wipe the SQL DB (HistoryDB and L2DB) and the StateDBs, " +
+			Usage: "Wipe the SQL DB (HistoryDB and L2DB), " +
 				"leaving the DB in a clean state",
 			Action: cmdWipeSQL,
-			Flags: append(flags,
+			Flags: []cli.Flag{
 				&cli.BoolFlag{
 					Name:     flagYes,
 					Usage:    "automatic yes to the prompt",
 					Required: false,
-				}),
+				}},
 		},
 		{
 			Name:    "run",
 			Aliases: []string{},
 			Usage:   "Run the hermez-node in the indicated mode",
 			Action:  cmdRun,
-			Flags:   flags,
-		},
-		{
-			Name:    "serveapi",
-			Aliases: []string{},
-			Usage:   "Serve the API only",
-			Action:  cmdServeAPI,
 		},
 		{
 			Name:    "discard",
 			Aliases: []string{},
 			Usage:   "Discard blocks up to a specified block number",
 			Action:  cmdDiscard,
-			Flags: append(flags,
+			Flags: []cli.Flag{
 				&cli.Int64Flag{
 					Name:     flagBlock,
 					Usage:    "last block number to keep",
 					Required: false,
-				}),
+				}},
 		},
 	}

--- a/common/account.go
+++ b/common/account.go
@@ -72,8 +72,7 @@ func (idx Idx) BigInt() *big.Int {
 // IdxFromBytes returns Idx from a byte array
 func IdxFromBytes(b []byte) (Idx, error) {
 	if len(b) != IdxBytesLen {
-		return 0, tracerr.Wrap(fmt.Errorf("can not parse Idx, bytes len %d, expected %d",
-			len(b), IdxBytesLen))
+		return 0, tracerr.Wrap(fmt.Errorf("can not parse Idx, bytes len %d, expected %d", len(b), IdxBytesLen))
 	}
 	var idxBytes [8]byte
 	copy(idxBytes[2:], b[:])
@@ -195,8 +194,7 @@ func (a *Account) BigInts() ([NLeafElems]*big.Int, error) {
 	return e, nil
 }

-// HashValue returns the value of the Account, which is the Poseidon hash of its
-// *big.Int representation
+// HashValue returns the value of the Account, which is the Poseidon hash of its *big.Int representation
 func (a *Account) HashValue() (*big.Int, error) {
 	bi, err := a.BigInts()
 	if err != nil {
--- a/common/account_test.go
+++ b/common/account_test.go
@@ -76,8 +76,7 @@ func TestNonceParser(t *testing.T) {

 func TestAccount(t *testing.T) {
 	var sk babyjub.PrivateKey
-	_, err := hex.Decode(sk[:],
-		[]byte("0001020304050607080900010203040506070809000102030405060708090001"))
+	_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
 	assert.NoError(t, err)
 	pk := sk.Public()

@@ -116,8 +115,7 @@ func TestAccountLoop(t *testing.T) {
 	// check that for different deterministic BabyJubJub keys & random Address there is no problem
 	for i := 0; i < 256; i++ {
 		var sk babyjub.PrivateKey
-		_, err := hex.Decode(sk[:],
-			[]byte("0001020304050607080900010203040506070809000102030405060708090001"))
+		_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
 		assert.NoError(t, err)
 		pk := sk.Public()

@@ -201,8 +199,7 @@ func bigFromStr(h string, u int) *big.Int {

 func TestAccountHashValue(t *testing.T) {
 	var sk babyjub.PrivateKey
-	_, err := hex.Decode(sk[:],
-		[]byte("0001020304050607080900010203040506070809000102030405060708090001"))
+	_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
 	assert.NoError(t, err)
 	pk := sk.Public()

@@ -215,16 +212,13 @@ func TestAccountHashValue(t *testing.T) {
 	}
 	v, err := account.HashValue()
 	assert.NoError(t, err)
-	assert.Equal(t,
-		"447675324273474410516096114710387312413478475468606444107594732044698919451",
-		v.String())
+	assert.Equal(t, "16297758255249203915951182296472515138555043617458222397753168518282206850764", v.String())
 }

 func TestAccountHashValueTestVectors(t *testing.T) {
 	// values from js test vectors
 	ay := new(big.Int).Sub(new(big.Int).Exp(big.NewInt(2), big.NewInt(253), nil), big.NewInt(1))
-	assert.Equal(t, "1fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
-		(hex.EncodeToString(ay.Bytes())))
+	assert.Equal(t, "1fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", (hex.EncodeToString(ay.Bytes())))
 	bjjPoint, err := babyjub.PointFromSignAndY(true, ay)
 	require.NoError(t, err)
 	bjj := babyjub.PublicKey(*bjjPoint)
@@ -242,22 +236,16 @@ func TestAccountHashValueTestVectors(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Equal(t, "9444732965739290427391", e[0].String())
 	assert.Equal(t, "6277101735386680763835789423207666416102355444464034512895", e[1].String())
-	assert.Equal(t,
-		"14474011154664524427946373126085988481658748083205070504932198000989141204991",
-		e[2].String())
+	assert.Equal(t, "14474011154664524427946373126085988481658748083205070504932198000989141204991", e[2].String())
 	assert.Equal(t, "1461501637330902918203684832716283019655932542975", e[3].String())

 	h, err := poseidon.Hash(e[:])
 	assert.NoError(t, err)
-	assert.Equal(t,
-		"13265203488631320682117942952393454767418777767637549409684833552016769103047",
-		h.String())
+	assert.Equal(t, "4550823210217540218403400309533329186487982452461145263910122718498735057257", h.String())

 	v, err := account.HashValue()
 	assert.NoError(t, err)
-	assert.Equal(t,
-		"13265203488631320682117942952393454767418777767637549409684833552016769103047",
-		v.String())
+	assert.Equal(t, "4550823210217540218403400309533329186487982452461145263910122718498735057257", v.String())

 	// second account
 	ay = big.NewInt(0)
@@ -273,9 +261,7 @@ func TestAccountHashValueTestVectors(t *testing.T) {
 	}
 	v, err = account.HashValue()
 	assert.NoError(t, err)
-	assert.Equal(t,
-		"2351654555892372227640888372176282444150254868378439619268573230312091195718",
-		v.String())
+	assert.Equal(t, "7750253361301235345986002241352365187241910378619330147114280396816709365657", v.String())

 	// third account
 	ay = bigFromStr("21b0a1688b37f77b1d1d5539ec3b826db5ac78b2513f574a04c50a7d4f8246d7", 16)
@@ -293,15 +279,11 @@ func TestAccountHashValueTestVectors(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Equal(t, "554050781187", e[0].String())
 	assert.Equal(t, "42000000000000000000", e[1].String())
-	assert.Equal(t,
-		"15238403086306505038849621710779816852318505119327426213168494964113886299863",
-		e[2].String())
+	assert.Equal(t, "15238403086306505038849621710779816852318505119327426213168494964113886299863", e[2].String())
 	assert.Equal(t, "935037732739828347587684875151694054123613453305", e[3].String())
 	v, err = account.HashValue()
 	assert.NoError(t, err)
-	assert.Equal(t,
-		"15036148928138382129196903417666258171042923749783835283230591475172197254845",
-		v.String())
+	assert.Equal(t, "10565754214047872850889045989683221123564392137456000481397520902594455245517", v.String())
 }

 func TestAccountErrNotInFF(t *testing.T) {
@@ -330,8 +312,7 @@ func TestAccountErrNotInFF(t *testing.T) {

 func TestAccountErrNumOverflowNonce(t *testing.T) {
 	var sk babyjub.PrivateKey
-	_, err := hex.Decode(sk[:],
-		[]byte("0001020304050607080900010203040506070809000102030405060708090001"))
+	_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
 	assert.NoError(t, err)
 	pk := sk.Public()

@@ -358,8 +339,7 @@ func TestAccountErrNumOverflowNonce(t *testing.T) {

 func TestAccountErrNumOverflowBalance(t *testing.T) {
 	var sk babyjub.PrivateKey
-	_, err := hex.Decode(sk[:],
-		[]byte("0001020304050607080900010203040506070809000102030405060708090001"))
+	_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
 	assert.NoError(t, err)
 	pk := sk.Public()

@@ -371,16 +351,14 @@ func TestAccountErrNumOverflowBalance(t *testing.T) {
 		BJJ:     pk.Compress(),
 		EthAddr: ethCommon.HexToAddress("0xc58d29fA6e86E4FAe04DDcEd660d45BCf3Cb2370"),
 	}
-	assert.Equal(t, "6277101735386680763835789423207666416102355444464034512895",
-		account.Balance.String())
+	assert.Equal(t, "6277101735386680763835789423207666416102355444464034512895", account.Balance.String())

 	_, err = account.Bytes()
 	assert.NoError(t, err)

 	// force value overflow
 	account.Balance = new(big.Int).Exp(big.NewInt(2), big.NewInt(192), nil)
-	assert.Equal(t, "6277101735386680763835789423207666416102355444464034512896",
-		account.Balance.String())
+	assert.Equal(t, "6277101735386680763835789423207666416102355444464034512896", account.Balance.String())
 	b, err := account.Bytes()
 	assert.NotNil(t, err)
 	assert.Equal(t, fmt.Errorf("%s Balance", ErrNumOverflow), tracerr.Unwrap(err))
--- a/common/accountcreationauths.go
+++ b/common/accountcreationauths.go
@@ -1,25 +1,21 @@
 package common

 import (
+	"encoding/binary"
+	"strconv"
 	"time"

 	ethCommon "github.com/ethereum/go-ethereum/common"
-	ethMath "github.com/ethereum/go-ethereum/common/math"
 	ethCrypto "github.com/ethereum/go-ethereum/crypto"
-	ethSigner "github.com/ethereum/go-ethereum/signer/core"
-	"github.com/hermeznetwork/tracerr"
 	"github.com/iden3/go-iden3-crypto/babyjub"
 )

-const (
-	// AccountCreationAuthMsg is the message that is signed to authorize a
-	// Hermez account creation
-	AccountCreationAuthMsg = "Account creation"
-	// EIP712Version is the used version of the EIP-712
-	EIP712Version = "1"
-	// EIP712Provider defines the Provider for the EIP-712
-	EIP712Provider = "Hermez Network"
-)
+// AccountCreationAuthMsg is the message that is signed to authorize a Hermez
+// account creation
+const AccountCreationAuthMsg = "I authorize this babyjubjub key for hermez rollup account creation"
+
+// EthMsgPrefix is the prefix for message signing at the Ethereum ecosystem
+const EthMsgPrefix = "\x19Ethereum Signed Message:\n"

 var (
 	// EmptyEthSignature is an ethereum signature of all zeroes
@@ -35,82 +31,44 @@ type AccountCreationAuth struct {
 	Timestamp time.Time             `meddler:"timestamp,utctime"`
 }

-// toHash returns a byte array to be hashed from the AccountCreationAuth, which
-// follows the EIP-712 encoding
 func (a *AccountCreationAuth) toHash(chainID uint16,
-	hermezContractAddr ethCommon.Address) ([]byte, error) {
-	chainIDFormatted := ethMath.NewHexOrDecimal256(int64(chainID))
+	hermezContractAddr ethCommon.Address) []byte {
+	var chainIDBytes [2]byte
+	binary.BigEndian.PutUint16(chainIDBytes[:], chainID)
+	// [EthPrefix | AccountCreationAuthMsg | compressedBJJ | chainID | hermezContractAddr]
+	var b []byte
+	b = append(b, []byte(AccountCreationAuthMsg)...)
+	b = append(b, SwapEndianness(a.BJJ[:])...) // for js implementation compatibility
+	b = append(b, chainIDBytes[:]...)
+	b = append(b, hermezContractAddr[:]...)

-	signerData := ethSigner.TypedData{
-		Types: ethSigner.Types{
-			"EIP712Domain": []ethSigner.Type{
-				{Name: "name", Type: "string"},
-				{Name: "version", Type: "string"},
-				{Name: "chainId", Type: "uint256"},
-				{Name: "verifyingContract", Type: "address"},
-			},
-			"Authorise": []ethSigner.Type{
-				{Name: "Provider", Type: "string"},
-				{Name: "Authorisation", Type: "string"},
-				{Name: "BJJKey", Type: "bytes32"},
-			},
-		},
-		PrimaryType: "Authorise",
-		Domain: ethSigner.TypedDataDomain{
-			Name:              EIP712Provider,
-			Version:           EIP712Version,
-			ChainId:           chainIDFormatted,
-			VerifyingContract: hermezContractAddr.Hex(),
-		},
-		Message: ethSigner.TypedDataMessage{
-			"Provider":      EIP712Provider,
-			"Authorisation": AccountCreationAuthMsg,
-			"BJJKey":        SwapEndianness(a.BJJ[:]),
-		},
-	}
-
-	domainSeparator, err := signerData.HashStruct("EIP712Domain", signerData.Domain.Map())
-	if err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	typedDataHash, err := signerData.HashStruct(signerData.PrimaryType, signerData.Message)
-	if err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-
-	rawData := []byte{0x19, 0x01} // "\x19\x01"
-	rawData = append(rawData, domainSeparator...)
-	rawData = append(rawData, typedDataHash...)
-	return rawData, nil
+	ethPrefix := EthMsgPrefix + strconv.Itoa(len(b))
+	return append([]byte(ethPrefix), b...)
 }

-// HashToSign returns the hash to be signed by the Ethereum address to authorize
-// the account creation, which follows the EIP-712 encoding
+// HashToSign returns the hash to be signed by the Etherum address to authorize
+// the account creation
 func (a *AccountCreationAuth) HashToSign(chainID uint16,
 	hermezContractAddr ethCommon.Address) ([]byte, error) {
-	b, err := a.toHash(chainID, hermezContractAddr)
-	if err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	return ethCrypto.Keccak256(b), nil
+	b := a.toHash(chainID, hermezContractAddr)
+	return ethCrypto.Keccak256Hash(b).Bytes(), nil
 }

 // Sign signs the account creation authorization message using the provided
-// `signHash` function, and stores the signature in `a.Signature`.  `signHash`
+// `signHash` function, and stores the signaure in `a.Signature`.  `signHash`
 // should do an ethereum signature using the account corresponding to
-// `a.EthAddr`.  The `signHash` function is used to make signing flexible: in
+// `a.EthAddr`.  The `signHash` function is used to make signig flexible: in
 // tests we sign directly using the private key, outside tests we sign using
-// the keystore (which never exposes the private key). Sign follows the EIP-712
-// encoding.
+// the keystore (which never exposes the private key).
 func (a *AccountCreationAuth) Sign(signHash func(hash []byte) ([]byte, error),
 	chainID uint16, hermezContractAddr ethCommon.Address) error {
 	hash, err := a.HashToSign(chainID, hermezContractAddr)
 	if err != nil {
-		return tracerr.Wrap(err)
+		return err
 	}
 	sig, err := signHash(hash)
 	if err != nil {
-		return tracerr.Wrap(err)
+		return err
 	}
 	sig[64] += 27
 	a.Signature = sig
@@ -119,8 +77,7 @@ func (a *AccountCreationAuth) Sign(signHash func(hash []byte) ([]byte, error),
 }

 // VerifySignature ensures that the Signature is done with the EthAddr, for the
-// chainID and hermezContractAddress passed by parameter. VerifySignature
-// follows the EIP-712 encoding.
+// chainID and hermezContractAddress passed by parameter
 func (a *AccountCreationAuth) VerifySignature(chainID uint16,
 	hermezContractAddr ethCommon.Address) bool {
 	// Calculate hash to be signed
--- a/common/accountcreationauths_test.go
+++ b/common/accountcreationauths_test.go
@@ -13,8 +13,7 @@ import (

 func TestAccountCreationAuthSignVerify(t *testing.T) {
 	// Ethereum key
-	ethSk, err :=
-		ethCrypto.HexToECDSA("fad9c8855b740a0b7ed4c221dbad0f33a83a49cad6b3fe8d5817ac83d38b6a19")
+	ethSk, err := ethCrypto.HexToECDSA("fad9c8855b740a0b7ed4c221dbad0f33a83a49cad6b3fe8d5817ac83d38b6a19")
 	require.NoError(t, err)
 	ethAddr := ethCrypto.PubkeyToAddress(ethSk.PublicKey)

@@ -40,7 +39,7 @@ func TestAccountCreationAuthSignVerify(t *testing.T) {
 	// Hash and sign manually and compare the generated signature
 	hash, err := a.HashToSign(chainID, hermezContractAddr)
 	require.NoError(t, err)
-	assert.Equal(t, "9414667457e658dd31949b82996b75c65a055512244c3bbfd22ff56add02ba65",
+	assert.Equal(t, "4f8df75e96fdce1ac90bb2f8d81c42047600f85bfcef80ce3b91c2a2afc58c1e",
 		hex.EncodeToString(hash))
 	sig, err := ethCrypto.Sign(hash, ethSk)
 	require.NoError(t, err)
@@ -70,38 +69,35 @@ func TestAccountCreationAuthJSComp(t *testing.T) {
 		sigExpected        string
 	}
 	var tvs []testVector
-	//nolint:lll
 	tv0 := testVector{
 		ethSk:              "0000000000000000000000000000000000000000000000000000000000000001",
 		expectedAddress:    "0x7E5F4552091A69125d5DfCb7b8C2659029395Bdf",
 		pkCompStr:          "21b0a1688b37f77b1d1d5539ec3b826db5ac78b2513f574a04c50a7d4f8246d7",
 		chainID:            uint16(4),
 		hermezContractAddr: "0x7e5f4552091a69125d5dfcb7b8c2659029395bdf",
-		toHashExpected:     "190189658bba487e11c7da602676ee32bc90b77d3f32a305b147e4f3c3b35f19672e5d84ccc38d0ab245c469b719549d837113465c2abf9972c49403ca6fd10ed3dc",
-		hashExpected:       "c56eba41e511df100c804c5c09288f35887efea4f033be956481af335df3bea2",
-		sigExpected:        "dbedcc5ce02db8f48afbdb2feba9a3a31848eaa8fca5f312ce37b01db45d2199208335330d4445bd2f51d1db68dbc0d0bf3585c4a07504b4efbe46a69eaae5a21b",
+		toHashExpected:     "19457468657265756d205369676e6564204d6573736167653a0a3132304920617574686f72697a65207468697320626162796a75626a7562206b657920666f72206865726d657a20726f6c6c7570206163636f756e74206372656174696f6e21b0a1688b37f77b1d1d5539ec3b826db5ac78b2513f574a04c50a7d4f8246d700047e5f4552091a69125d5dfcb7b8c2659029395bdf",
+		hashExpected:       "39afea52d843a4de905b6b5ebb0ee8c678141f711d96d9b429c4aec10ef9911f",
+		sigExpected:        "73d10d6ecf06ee8a5f60ac90f06b78bef9c650f414ba3ac73e176dc32e896159147457e9c86f0b4bd60fdaf2c0b2aec890a7df993d69a4805e242a6b845ebf231c",
 	}
-	//nolint:lll
 	tv1 := testVector{
 		ethSk:              "0000000000000000000000000000000000000000000000000000000000000002",
 		expectedAddress:    "0x2B5AD5c4795c026514f8317c7a215E218DcCD6cF",
 		pkCompStr:          "093985b1993d9f743f9d7d943ed56f38601cb8b196db025f79650c4007c3054d",
 		chainID:            uint16(0),
 		hermezContractAddr: "0x2b5ad5c4795c026514f8317c7a215e218dccd6cf",
-		toHashExpected:     "1901dafbc253dedf90d6421dc6e25d5d9efc6985133cb2a8d363d0a081a0e3eddddc65f603a88de36aaeabd3b4cf586538c7f3fd50c94780530a3707c8c14ad9fd11",
-		hashExpected:       "deb9afa479282cf27b442ce8ba86b19448aa87eacef691521a33db5d0feb9959",
-		sigExpected:        "6a0da90ba2d2b1be679a28ebe54ee03082d44b836087391cd7d2607c1e4dafe04476e6e88dccb8707c68312512f16c947524b35c80f26c642d23953e9bb84c701c",
+		toHashExpected:     "19457468657265756d205369676e6564204d6573736167653a0a3132304920617574686f72697a65207468697320626162796a75626a7562206b657920666f72206865726d657a20726f6c6c7570206163636f756e74206372656174696f6e093985b1993d9f743f9d7d943ed56f38601cb8b196db025f79650c4007c3054d00002b5ad5c4795c026514f8317c7a215e218dccd6cf",
+		hashExpected:       "89a3895993a4736232212e59566294feb3da227af44375daf3307dcad5451d5d",
+		sigExpected:        "bb4156156c705494ad5f99030342c64657e51e2994750f92125717c40bf56ad632044aa6bd00979feea92c417b552401e65fe5f531f15010d9d1c278da8be1df1b",
 	}
-	//nolint:lll
 	tv2 := testVector{
 		ethSk:              "c5e8f61d1ab959b397eecc0a37a6517b8e67a0e7cf1f4bce5591f3ed80199122",
 		expectedAddress:    "0xc783df8a850f42e7F7e57013759C285caa701eB6",
 		pkCompStr:          "22870c1bcc451396202d62f566026eab8e438c6c91decf8ddf63a6c162619b52",
 		chainID:            uint16(31337), // =0x7a69
 		hermezContractAddr: "0xf4e77E5Da47AC3125140c470c71cBca77B5c638c",
-		toHashExpected:     "190167617949b934d7e01add4009cd3d47415a26727b7d6288e5dce33fb3721d5a1a9ce511b19b694c9aaf8183f4987ed752f24884c54c003d11daa2e98c7547a79e",
-		hashExpected:       "157b570c597e615b8356ce008ac39f43bc9b6d50080bc07d968031b9378acbbb",
-		sigExpected:        "a0766181102428b5672e523dc4b905c10ddf025c10dbd0b3534ef864632a14652737610041c670b302fc7dca28edd5d6eac42b72d69ce58da8ce21287b244e381b",
+		toHashExpected:     "19457468657265756d205369676e6564204d6573736167653a0a3132304920617574686f72697a65207468697320626162796a75626a7562206b657920666f72206865726d657a20726f6c6c7570206163636f756e74206372656174696f6e22870c1bcc451396202d62f566026eab8e438c6c91decf8ddf63a6c162619b527a69f4e77e5da47ac3125140c470c71cbca77b5c638c",
+		hashExpected:       "4f6ead01278ba4597d4720e37482f585a713497cea994a95209f4c57a963b4a7",
+		sigExpected:        "43b5818802a137a72a190c1d8d767ca507f7a4804b1b69b5e055abf31f4f2b476c80bb1ba63260d95610f6f831420d32130e7f22fec5d76e16644ddfcedd0d441c",
 	}
 	tvs = append(tvs, tv0)
 	tvs = append(tvs, tv1)
@@ -126,10 +122,10 @@ func TestAccountCreationAuthJSComp(t *testing.T) {
 			BJJ:     pkComp,
 		}

-		toHash, err := a.toHash(chainID, hermezContractAddr)
-		require.NoError(t, err)
+		toHash := a.toHash(chainID, hermezContractAddr)
 		assert.Equal(t, tv.toHashExpected,
 			hex.EncodeToString(toHash))
+		assert.Equal(t, 120+len(EthMsgPrefix)+len([]byte("120")), len(toHash))

 		msg, err := a.HashToSign(chainID, hermezContractAddr)
 		require.NoError(t, err)
--- a/common/batch.go
+++ b/common/batch.go
@@ -13,9 +13,8 @@ const batchNumBytesLen = 8

 // Batch is a struct that represents Hermez network batch
 type Batch struct {
-	BatchNum BatchNum `meddler:"batch_num"`
-	// Ethereum block in which the batch is forged
-	EthBlockNum        int64                `meddler:"eth_block_num"`
+	BatchNum           BatchNum             `meddler:"batch_num"`
+	EthBlockNum        int64                `meddler:"eth_block_num"` // Ethereum block in which the batch is forged
 	ForgerAddr         ethCommon.Address    `meddler:"forger_addr"`
 	CollectedFees      map[TokenID]*big.Int `meddler:"fees_collected,json"`
 	FeeIdxsCoordinator []Idx                `meddler:"fee_idxs_coordinator,json"`
@@ -23,11 +22,9 @@ type Batch struct {
 	NumAccounts        int                  `meddler:"num_accounts"`
 	LastIdx            int64                `meddler:"last_idx"`
 	ExitRoot           *big.Int             `meddler:"exit_root,bigint"`
-	// ForgeL1TxsNum is optional, Only when the batch forges L1 txs. Identifier that corresponds
-	// to the group of L1 txs forged in the current batch.
-	ForgeL1TxsNum *int64   `meddler:"forge_l1_txs_num"`
-	SlotNum       int64    `meddler:"slot_num"` // Slot in which the batch is forged
-	TotalFeesUSD  *float64 `meddler:"total_fees_usd"`
+	ForgeL1TxsNum      *int64               `meddler:"forge_l1_txs_num"` // optional, Only when the batch forges L1 txs. Identifier that corresponds to the group of L1 txs forged in the current batch.
+	SlotNum            int64                `meddler:"slot_num"`         // Slot in which the batch is forged
+	TotalFeesUSD       *float64             `meddler:"total_fees_usd"`
 }

 // NewEmptyBatch creates a new empty batch
@@ -66,9 +63,7 @@ func (bn BatchNum) BigInt() *big.Int {
 // BatchNumFromBytes returns BatchNum from a []byte
 func BatchNumFromBytes(b []byte) (BatchNum, error) {
 	if len(b) != batchNumBytesLen {
-		return 0,
-			tracerr.Wrap(fmt.Errorf("can not parse BatchNumFromBytes, bytes len %d, expected %d",
-				len(b), batchNumBytesLen))
+		return 0, tracerr.Wrap(fmt.Errorf("can not parse BatchNumFromBytes, bytes len %d, expected %d", len(b), batchNumBytesLen))
 	}
 	batchNum := binary.BigEndian.Uint64(b[:batchNumBytesLen])
 	return BatchNum(batchNum), nil
--- a/common/bid.go
+++ b/common/bid.go
@@ -34,7 +34,7 @@ type Slot struct {
 	// BatchesLen       int
 	BidValue  *big.Int
 	BootCoord bool
-	// Bidder, Forger and URL correspond to the winner of the slot (which is
+	// Bidder, Forer and URL correspond to the winner of the slot (which is
 	// not always the highest bidder).  These are the values of the
 	// coordinator that is able to forge exclusively before the deadline.
 	Bidder ethCommon.Address
--- a/common/coordinator.go
+++ b/common/coordinator.go
@@ -5,15 +5,10 @@ import (
 )

 // Coordinator represents a Hermez network coordinator who wins an auction for an specific slot
-// WARNING: this is strongly based on the previous implementation, once the new spec is done, this
-// may change a lot.
+// WARNING: this is strongly based on the previous implementation, once the new spec is done, this may change a lot.
 type Coordinator struct {
-	// Bidder is the address of the bidder
-	Bidder ethCommon.Address `meddler:"bidder_addr"`
-	// Forger is the address of the forger
-	Forger ethCommon.Address `meddler:"forger_addr"`
-	// EthBlockNum is the block in which the coordinator was registered
-	EthBlockNum int64 `meddler:"eth_block_num"`
-	// URL of the coordinators API
-	URL string `meddler:"url"`
+	Bidder      ethCommon.Address `meddler:"bidder_addr"`   // address of the bidder
+	Forger      ethCommon.Address `meddler:"forger_addr"`   // address of the forger
+	EthBlockNum int64             `meddler:"eth_block_num"` // block in which the coordinator was registered
+	URL         string            `meddler:"url"`           // URL of the coordinators API
 }
--- a/common/eth.go
+++ b/common/eth.go
@@ -1,33 +0,0 @@
-package common
-
-// SCVariables joins all the smart contract variables in a single struct
-type SCVariables struct {
-	Rollup   RollupVariables   `validate:"required"`
-	Auction  AuctionVariables  `validate:"required"`
-	WDelayer WDelayerVariables `validate:"required"`
-}
-
-// AsPtr returns the SCVariables as a SCVariablesPtr using pointers to the
-// original SCVariables
-func (v *SCVariables) AsPtr() *SCVariablesPtr {
-	return &SCVariablesPtr{
-		Rollup:   &v.Rollup,
-		Auction:  &v.Auction,
-		WDelayer: &v.WDelayer,
-	}
-}
-
-// SCVariablesPtr joins all the smart contract variables as pointers in a single
-// struct
-type SCVariablesPtr struct {
-	Rollup   *RollupVariables   `validate:"required"`
-	Auction  *AuctionVariables  `validate:"required"`
-	WDelayer *WDelayerVariables `validate:"required"`
-}
-
-// SCConsts joins all the smart contract constants in a single struct
-type SCConsts struct {
-	Rollup   RollupConstants
-	Auction  AuctionConstants
-	WDelayer WDelayerConstants
-}
--- a/common/ethauction.go
+++ b/common/ethauction.go
@@ -68,13 +68,11 @@ type AuctionVariables struct {
 	ClosedAuctionSlots uint16 `meddler:"closed_auction_slots" validate:"required"`
 	// Distance (#slots) to the farthest slot to which you can bid (30 days = 4320 slots )
 	OpenAuctionSlots uint16 `meddler:"open_auction_slots" validate:"required"`
-	// How the HEZ tokens deposited by the slot winner are distributed (Burn: 40% - Donation:
-	// 40% - HGT: 20%)
+	// How the HEZ tokens deposited by the slot winner are distributed (Burn: 40% - Donation: 40% - HGT: 20%)
 	AllocationRatio [3]uint16 `meddler:"allocation_ratio,json" validate:"required"`
 	// Minimum outbid (percentage) over the previous one to consider it valid
 	Outbidding uint16 `meddler:"outbidding" validate:"required"`
-	// Number of blocks at the end of a slot in which any coordinator can forge if the winner
-	// has not forged one before
+	// Number of blocks at the end of a slot in which any coordinator can forge if the winner has not forged one before
 	SlotDeadline uint8 `meddler:"slot_deadline" validate:"required"`
 }

--- a/common/ethrollup.go
+++ b/common/ethrollup.go
@@ -20,22 +20,19 @@ const (
 	// RollupConstExitIDx IDX 1 is reserved for exits
 	RollupConstExitIDx = 1
 	// RollupConstLimitTokens Max number of tokens allowed to be registered inside the rollup
-	RollupConstLimitTokens = (1 << 32) //nolint:gomnd
-	// RollupConstL1CoordinatorTotalBytes [4 bytes] token + [32 bytes] babyjub + [65 bytes]
-	// compressedSignature
+	RollupConstLimitTokens = (1 << 32)
+	// RollupConstL1CoordinatorTotalBytes [4 bytes] token + [32 bytes] babyjub + [65 bytes] compressedSignature
 	RollupConstL1CoordinatorTotalBytes = 101
-	// RollupConstL1UserTotalBytes [20 bytes] fromEthAddr + [32 bytes] fromBjj-compressed + [6
-	// bytes] fromIdx + [5 bytes] depositAmountFloat40 + [5 bytes] amountFloat40 + [4 bytes]
-	// tokenId + [6 bytes] toIdx
+	// RollupConstL1UserTotalBytes [20 bytes] fromEthAddr + [32 bytes] fromBjj-compressed + [6 bytes] fromIdx +
+	// [5 bytes] depositAmountFloat40 + [5 bytes] amountFloat40 + [4 bytes] tokenId + [6 bytes] toIdx
 	RollupConstL1UserTotalBytes = 78
 	// RollupConstMaxL1UserTx Maximum L1-user transactions allowed to be queued in a batch
 	RollupConstMaxL1UserTx = 128
 	// RollupConstMaxL1Tx Maximum L1 transactions allowed to be queued in a batch
 	RollupConstMaxL1Tx = 256
-	// RollupConstInputSHAConstantBytes [6 bytes] lastIdx + [6 bytes] newLastIdx  + [32 bytes]
-	// stateRoot  + [32 bytes] newStRoot  + [32 bytes] newExitRoot + [_MAX_L1_TX *
-	// _L1_USER_TOTALBYTES bytes] l1TxsData + totalL2TxsDataLength + feeIdxCoordinatorLength +
-	// [2 bytes] chainID = 18542 bytes +  totalL2TxsDataLength + feeIdxCoordinatorLength
+	// RollupConstInputSHAConstantBytes [6 bytes] lastIdx + [6 bytes] newLastIdx  + [32 bytes] stateRoot  + [32 bytes] newStRoot  + [32 bytes] newExitRoot +
+	// [_MAX_L1_TX * _L1_USER_TOTALBYTES bytes] l1TxsData + totalL2TxsDataLength + feeIdxCoordinatorLength + [2 bytes] chainID =
+	// 18542 bytes +  totalL2TxsDataLength + feeIdxCoordinatorLength
 	RollupConstInputSHAConstantBytes = 18546
 	// RollupConstNumBuckets Number of buckets
 	RollupConstNumBuckets = 5
@@ -47,18 +44,14 @@ const (

 var (
 	// RollupConstLimitDepositAmount Max deposit amount allowed (depositAmount: L1 --> L2)
-	RollupConstLimitDepositAmount, _ = new(big.Int).SetString(
-		"340282366920938463463374607431768211456", 10)
+	RollupConstLimitDepositAmount, _ = new(big.Int).SetString("340282366920938463463374607431768211456", 10)
 	// RollupConstLimitL2TransferAmount Max amount allowed (amount L2 --> L2)
-	RollupConstLimitL2TransferAmount, _ = new(big.Int).SetString(
-		"6277101735386680763835789423207666416102355444464034512896", 10)
+	RollupConstLimitL2TransferAmount, _ = new(big.Int).SetString("6277101735386680763835789423207666416102355444464034512896", 10)

-	// RollupConstEthAddressInternalOnly This ethereum address is used internally for rollup
-	// accounts that don't have ethereum address, only Babyjubjub.
-	// This non-ethereum accounts can be created by the coordinator and allow users to have a
-	// rollup account without needing an ethereum address
-	RollupConstEthAddressInternalOnly = ethCommon.HexToAddress(
-		"0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF")
+	// RollupConstEthAddressInternalOnly This ethereum address is used internally for rollup accounts that don't have ethereum address, only Babyjubjub
+	// This non-ethereum accounts can be created by the coordinator and allow users to have a rollup
+	// account without needing an ethereum address
+	RollupConstEthAddressInternalOnly = ethCommon.HexToAddress("0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF")
 	// RollupConstRfield Modulus zkSNARK
 	RollupConstRfield, _ = new(big.Int).SetString(
 		"21888242871839275222246405745257275088548364400416034343698204186575808495617", 10)
@@ -70,32 +63,24 @@ var (

 	// RollupConstRecipientInterfaceHash ERC777 recipient interface hash
 	RollupConstRecipientInterfaceHash = crypto.Keccak256([]byte("ERC777TokensRecipient"))
-	// RollupConstPerformL1UserTxSignature the signature of the function that can be called thru
-	// an ERC777 `send`
-	RollupConstPerformL1UserTxSignature = crypto.Keccak256([]byte(
-		"addL1Transaction(uint256,uint48,uint16,uint16,uint32,uint48)"))
-	// RollupConstAddTokenSignature the signature of the function that can be called thru an
-	// ERC777 `send`
+	// RollupConstPerformL1UserTxSignature the signature of the function that can be called thru an ERC777 `send`
+	RollupConstPerformL1UserTxSignature = crypto.Keccak256([]byte("addL1Transaction(uint256,uint48,uint16,uint16,uint32,uint48)"))
+	// RollupConstAddTokenSignature the signature of the function that can be called thru an ERC777 `send`
 	RollupConstAddTokenSignature = crypto.Keccak256([]byte("addToken(address)"))
 	// RollupConstSendSignature ERC777 Signature
 	RollupConstSendSignature = crypto.Keccak256([]byte("send(address,uint256,bytes)"))
 	// RollupConstERC777Granularity ERC777 Signature
 	RollupConstERC777Granularity = crypto.Keccak256([]byte("granularity()"))
-	// RollupConstWithdrawalDelayerDeposit  This constant are used to deposit tokens from ERC77
-	// tokens into withdrawal delayer
+	// RollupConstWithdrawalDelayerDeposit  This constant are used to deposit tokens from ERC77 tokens into withdrawal delayer
 	RollupConstWithdrawalDelayerDeposit = crypto.Keccak256([]byte("deposit(address,address,uint192)"))

 	// ERC20 signature

-	// RollupConstTransferSignature This constant is used in the _safeTransfer internal method
-	// in order to safe GAS.
+	// RollupConstTransferSignature This constant is used in the _safeTransfer internal method in order to safe GAS.
 	RollupConstTransferSignature = crypto.Keccak256([]byte("transfer(address,uint256)"))
-	// RollupConstTransferFromSignature This constant is used in the _safeTransfer internal
-	// method in order to safe GAS.
-	RollupConstTransferFromSignature = crypto.Keccak256([]byte(
-		"transferFrom(address,address,uint256)"))
-	// RollupConstApproveSignature This constant is used in the _safeTransfer internal method in
-	// order to safe GAS.
+	// RollupConstTransferFromSignature This constant is used in the _safeTransfer internal method in order to safe GAS.
+	RollupConstTransferFromSignature = crypto.Keccak256([]byte("transferFrom(address,address,uint256)"))
+	// RollupConstApproveSignature This constant is used in the _safeTransfer internal method in order to safe GAS.
 	RollupConstApproveSignature = crypto.Keccak256([]byte("approve(address,uint256)"))
 	// RollupConstERC20Signature ERC20 decimals signature
 	RollupConstERC20Signature = crypto.Keccak256([]byte("decimals()"))
@@ -156,7 +141,6 @@ type TokenExchange struct {
 }

 // RollupVariables are the variables of the Rollup Smart Contract
-//nolint:lll
 type RollupVariables struct {
 	EthBlockNum           int64                               `meddler:"eth_block_num"`
 	FeeAddToken           *big.Int                            `meddler:"fee_add_token,bigint" validate:"required"`
--- a/common/ethwdelayer.go
+++ b/common/ethwdelayer.go
@@ -27,7 +27,6 @@ type WDelayerEscapeHatchWithdrawal struct {
 }

 // WDelayerVariables are the variables of the Withdrawal Delayer Smart Contract
-//nolint:lll
 type WDelayerVariables struct {
 	EthBlockNum int64 `json:"ethereumBlockNum" meddler:"eth_block_num"`
 	// HermezRollupAddress        ethCommon.Address `json:"hermezRollupAddress" meddler:"rollup_address"`
--- a/common/fee.go
+++ b/common/fee.go
@@ -22,9 +22,9 @@ var FeeFactorLsh60 [256]*big.Int
 // the coordinator according to the tx type (if the tx requires to create an
 // account and register, only register or he account already esists)
 type RecommendedFee struct {
-	ExistingAccount        float64 `json:"existingAccount"`
-	CreatesAccount         float64 `json:"createAccount"`
-	CreatesAccountInternal float64 `json:"createAccountInternal"`
+	ExistingAccount           float64 `json:"existingAccount"`
+	CreatesAccount            float64 `json:"createAccount"`
+	CreatesAccountAndRegister float64 `json:"createAccountInternal"`
 }

 // FeeSelector is used to select a percentage from the FeePlan.
--- a/common/float40.go
+++ b/common/float40.go
@@ -1,4 +1,4 @@
-// Package common float40.go provides methods to work with Hermez custom half
+// Package common Float40 provides methods to work with Hermez custom half
 // float precision, 40 bits, codification internally called Float40 has been
 // adopted to encode large integers. This is done in order to save bits when L2
 // transactions are published.
@@ -32,8 +32,6 @@ var (
 	// ErrFloat40NotEnoughPrecission is used when the given *big.Int can
 	// not be represented as Float40 due not enough precission
 	ErrFloat40NotEnoughPrecission = errors.New("Float40 error, not enough precission")
-
-	thres = big.NewInt(0x08_00_00_00_00)
 )

 // Float40 represents a float in a 64 bit format
@@ -70,7 +68,7 @@ func (f40 Float40) BigInt() (*big.Int, error) {
 	var f40Uint64 uint64 = uint64(f40) & 0x00_00_00_FF_FF_FF_FF_FF
 	f40Bytes, err := f40.Bytes()
 	if err != nil {
-		return nil, tracerr.Wrap(err)
+		return nil, err
 	}

 	e := f40Bytes[0] & 0xF8 >> 3      // take first 5 bits
@@ -88,41 +86,18 @@ func NewFloat40(f *big.Int) (Float40, error) {
 	e := big.NewInt(0)
 	zero := big.NewInt(0)
 	ten := big.NewInt(10)
+	thres := big.NewInt(0x08_00_00_00_00)
 	for new(big.Int).Mod(m, ten).Cmp(zero) == 0 && m.Cmp(thres) >= 0 {
 		m = new(big.Int).Div(m, ten)
 		e = new(big.Int).Add(e, big.NewInt(1))
 	}
 	if e.Int64() > 31 {
-		return 0, tracerr.Wrap(ErrFloat40E31)
+		return 0, ErrFloat40E31
 	}
 	if m.Cmp(thres) >= 0 {
-		return 0, tracerr.Wrap(ErrFloat40NotEnoughPrecission)
+		return 0, ErrFloat40NotEnoughPrecission
 	}
 	r := new(big.Int).Add(m,
 		new(big.Int).Mul(e, thres))
 	return Float40(r.Uint64()), nil
 }
-
-// NewFloat40Floor encodes a *big.Int integer as a Float40, rounding down in
-// case of loss during the encoding. It returns an error in case that the number
-// is too big (e>31). Warning: this method should not be used inside the
-// hermez-node, it's a helper for external usage to generate valid Float40
-// values.
-func NewFloat40Floor(f *big.Int) (Float40, error) {
-	m := f
-	e := big.NewInt(0)
-	// zero := big.NewInt(0)
-	ten := big.NewInt(10)
-	for m.Cmp(thres) >= 0 {
-		m = new(big.Int).Div(m, ten)
-		e = new(big.Int).Add(e, big.NewInt(1))
-	}
-	if e.Int64() > 31 {
-		return 0, tracerr.Wrap(ErrFloat40E31)
-	}
-
-	r := new(big.Int).Add(m,
-		new(big.Int).Mul(e, thres))
-
-	return Float40(r.Uint64()), nil
-}
--- a/common/float40_test.go
+++ b/common/float40_test.go
@@ -1,11 +1,9 @@
 package common

 import (
-	"fmt"
 	"math/big"
 	"testing"

-	"github.com/hermeznetwork/tracerr"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -57,56 +55,7 @@ func TestExpectError(t *testing.T) {
 		bi, ok := new(big.Int).SetString(test, 10)
 		require.True(t, ok)
 		_, err := NewFloat40(bi)
-		assert.Equal(t, testVector[test], tracerr.Unwrap(err))
-	}
-}
-
-func TestNewFloat40Floor(t *testing.T) {
-	testVector := map[string][]string{
-		// []int contains [Float40 value, Flot40 Floor value], when
-		// Float40 value is expected to be 0, is because is expected to
-		// be an error
-		"9922334455000000000000000000000000000000": {
-			"1040714485495", "1040714485495", "9922334455000000000000000000000000000000"},
-		"9922334455000000000000000000000000000001": { // Floor [2] will be same as prev line
-			"0", "1040714485495", "9922334455000000000000000000000000000000"},
-		"9922334454999999999999999999999999999999": {
-			"0", "1040714485494", "9922334454000000000000000000000000000000"},
-		"42949672950000000000000000000000000000000": {
-			"1069446856703", "1069446856703", "42949672950000000000000000000000000000000"},
-		"99223344556573838487575": {
-			"0", "456598933239", "99223344550000000000000"},
-		"992233445500000000000000000000000000000000": {
-			"0", "0", "0"}, // e>31, returns 0, err
-		"343597383670000000000000000000000000000000": {
-			"1099511627775", "1099511627775", "343597383670000000000000000000000000000000"},
-		"343597383680000000000000000000000000000000": {
-			"0", "0", "0"}, // e>31, returns 0, err
-		"1157073197879933027": {
-			"0", "286448638922", "1157073197800000000"},
-	}
-	for test := range testVector {
-		bi, ok := new(big.Int).SetString(test, 10)
-		require.True(t, ok)
-		f40, err := NewFloat40(bi)
-		if f40 == 0 {
-			assert.Error(t, err)
-		} else {
-			assert.NoError(t, err)
-		}
-		assert.Equal(t, testVector[test][0], fmt.Sprint(uint64(f40)))
-
-		f40, err = NewFloat40Floor(bi)
-		if f40 == 0 {
-			assert.Equal(t, ErrFloat40E31, tracerr.Unwrap(err))
-		} else {
-			assert.NoError(t, err)
-		}
-		assert.Equal(t, testVector[test][1], fmt.Sprint(uint64(f40)))
-
-		bi2, err := f40.BigInt()
-		require.NoError(t, err)
-		assert.Equal(t, fmt.Sprint(testVector[test][2]), bi2.String())
+		assert.Equal(t, testVector[test], err)
 	}
 }

--- a/common/l1tx.go
+++ b/common/l1tx.go
@@ -21,33 +21,25 @@ type L1Tx struct {
 	// where type:
 	// 	- L1UserTx: 0
 	// 	- L1CoordinatorTx: 1
-	TxID TxID `meddler:"id"`
-	// ToForgeL1TxsNum indicates in which the tx was forged / will be forged
-	ToForgeL1TxsNum *int64 `meddler:"to_forge_l1_txs_num"`
-	Position        int    `meddler:"position"`
-	// UserOrigin is set to true if the tx was originated by a user, false if it was
-	// aoriginated by a coordinator. Note that this differ from the spec for implementation
-	// simplification purpposes
-	UserOrigin bool `meddler:"user_origin"`
-	// FromIdx is used by L1Tx/Deposit to indicate the Idx receiver of the L1Tx.DepositAmount
-	// (deposit)
-	FromIdx          Idx                   `meddler:"from_idx,zeroisnull"`
+	TxID             TxID                  `meddler:"id"`
+	ToForgeL1TxsNum  *int64                `meddler:"to_forge_l1_txs_num"` // toForgeL1TxsNum in which the tx was forged / will be forged
+	Position         int                   `meddler:"position"`
+	UserOrigin       bool                  `meddler:"user_origin"`         // true if the tx was originated by a user, false if it was aoriginated by a coordinator. Note that this differ from the spec for implementation simplification purpposes
+	FromIdx          Idx                   `meddler:"from_idx,zeroisnull"` // FromIdx is used by L1Tx/Deposit to indicate the Idx receiver of the L1Tx.DepositAmount (deposit)
 	EffectiveFromIdx Idx                   `meddler:"effective_from_idx,zeroisnull"`
 	FromEthAddr      ethCommon.Address     `meddler:"from_eth_addr,zeroisnull"`
 	FromBJJ          babyjub.PublicKeyComp `meddler:"from_bjj,zeroisnull"`
-	// ToIdx is ignored in L1Tx/Deposit, but used in the L1Tx/DepositAndTransfer
-	ToIdx   Idx      `meddler:"to_idx"`
-	TokenID TokenID  `meddler:"token_id"`
-	Amount  *big.Int `meddler:"amount,bigint"`
+	ToIdx            Idx                   `meddler:"to_idx"` // ToIdx is ignored in L1Tx/Deposit, but used in the L1Tx/DepositAndTransfer
+	TokenID          TokenID               `meddler:"token_id"`
+	Amount           *big.Int              `meddler:"amount,bigint"`
 	// EffectiveAmount only applies to L1UserTx.
 	EffectiveAmount *big.Int `meddler:"effective_amount,bigintnull"`
 	DepositAmount   *big.Int `meddler:"deposit_amount,bigint"`
 	// EffectiveDepositAmount only applies to L1UserTx.
-	EffectiveDepositAmount *big.Int `meddler:"effective_deposit_amount,bigintnull"`
-	// Ethereum Block Number in which this L1Tx was added to the queue
-	EthBlockNum int64     `meddler:"eth_block_num"`
-	Type        TxType    `meddler:"type"`
-	BatchNum    *BatchNum `meddler:"batch_num"`
+	EffectiveDepositAmount *big.Int  `meddler:"effective_deposit_amount,bigintnull"`
+	EthBlockNum            int64     `meddler:"eth_block_num"` // Ethereum Block Number in which this L1Tx was added to the queue
+	Type                   TxType    `meddler:"type"`
+	BatchNum               *BatchNum `meddler:"batch_num"`
 }

 // NewL1Tx returns the given L1Tx with the TxId & Type parameters calculated
@@ -259,7 +251,7 @@ func L1TxFromDataAvailability(b []byte, nLevels uint32) (*L1Tx, error) {
 	}
 	l1tx.ToIdx = toIdx
 	l1tx.EffectiveAmount, err = Float40FromBytes(amountBytes).BigInt()
-	return &l1tx, tracerr.Wrap(err)
+	return &l1tx, err
 }

 // BytesGeneric returns the generic representation of a L1Tx. This method is
@@ -339,9 +331,7 @@ func (tx *L1Tx) BytesCoordinatorTx(compressedSignatureBytes []byte) ([]byte, err
 // L1UserTxFromBytes decodes a L1Tx from []byte
 func L1UserTxFromBytes(b []byte) (*L1Tx, error) {
 	if len(b) != RollupConstL1UserTotalBytes {
-		return nil,
-			tracerr.Wrap(fmt.Errorf("Can not parse L1Tx bytes, expected length %d, current: %d",
-				68, len(b)))
+		return nil, tracerr.Wrap(fmt.Errorf("Can not parse L1Tx bytes, expected length %d, current: %d", 68, len(b)))
 	}

 	tx := &L1Tx{
@@ -378,15 +368,19 @@ func L1UserTxFromBytes(b []byte) (*L1Tx, error) {
 	return tx, nil
 }

+func signHash(data []byte) []byte {
+	msg := fmt.Sprintf("\x19Ethereum Signed Message:\n%d%s", len(data), data)
+	return ethCrypto.Keccak256([]byte(msg))
+}
+
 // L1CoordinatorTxFromBytes decodes a L1Tx from []byte
-func L1CoordinatorTxFromBytes(b []byte, chainID *big.Int, hermezAddress ethCommon.Address) (*L1Tx,
-	error) {
+func L1CoordinatorTxFromBytes(b []byte, chainID *big.Int, hermezAddress ethCommon.Address) (*L1Tx, error) {
 	if len(b) != RollupConstL1CoordinatorTotalBytes {
-		return nil, tracerr.Wrap(
-			fmt.Errorf("Can not parse L1CoordinatorTx bytes, expected length %d, current: %d",
-				101, len(b)))
+		return nil, tracerr.Wrap(fmt.Errorf("Can not parse L1CoordinatorTx bytes, expected length %d, current: %d", 101, len(b)))
 	}

+	bytesMessage := []byte("I authorize this babyjubjub key for hermez rollup account creation")
+
 	tx := &L1Tx{
 		UserOrigin: false,
 	}
@@ -407,20 +401,18 @@ func L1CoordinatorTxFromBytes(b []byte, chainID *big.Int, hermezAddress ethCommo
 		// L1CoordinatorTX ETH
 		// Ethereum adds 27 to v
 		v = b[0] - byte(27) //nolint:gomnd
+		chainIDBytes := ethCommon.LeftPadBytes(chainID.Bytes(), 2)
+		var data []byte
+		data = append(data, bytesMessage...)
+		data = append(data, pkCompB...)
+		data = append(data, chainIDBytes[:]...)
+		data = append(data, hermezAddress.Bytes()...)
 		var signature []byte
 		signature = append(signature, r[:]...)
 		signature = append(signature, s[:]...)
 		signature = append(signature, v)
-
-		accCreationAuth := AccountCreationAuth{
-			BJJ: tx.FromBJJ,
-		}
-		h, err := accCreationAuth.HashToSign(uint16(chainID.Uint64()), hermezAddress)
-		if err != nil {
-			return nil, tracerr.Wrap(err)
-		}
-
-		pubKeyBytes, err := ethCrypto.Ecrecover(h, signature)
+		hash := signHash(data)
+		pubKeyBytes, err := ethCrypto.Ecrecover(hash, signature)
 		if err != nil {
 			return nil, tracerr.Wrap(err)
 		}
--- a/common/l1tx_test.go
+++ b/common/l1tx_test.go
@@ -15,7 +15,7 @@ import (
 	"github.com/stretchr/testify/require"
 )

-func TestNewL1UserTx(t *testing.T) {
+func TestNewL1UserTxID(t *testing.T) {
 	toForge := int64(123456)
 	l1Tx := &L1Tx{
 		ToForgeL1TxsNum: &toForge,
@@ -29,8 +29,39 @@ func TestNewL1UserTx(t *testing.T) {
 	}
 	l1Tx, err := NewL1Tx(l1Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x00a6cbae3b8661fb75b0919ca6605a02cfb04d9c6dd16870fa0fcdf01befa32768",
-		l1Tx.TxID.String())
+	assert.Equal(t, "0x00a6cbae3b8661fb75b0919ca6605a02cfb04d9c6dd16870fa0fcdf01befa32768", l1Tx.TxID.String())
+
+	maxInt64 := 0xFFFF_FFFF_FFFF_FFFF >> 1
+
+	toForge = int64(maxInt64)
+	l1Tx = &L1Tx{
+		ToForgeL1TxsNum: &toForge,
+		Position:        maxInt64,
+		UserOrigin:      true,
+	}
+	l1Tx, err = NewL1Tx(l1Tx)
+	assert.NoError(t, err)
+	assert.Equal(t, "0x001ff31eb325f324652bfe6b607a19e04789e082ee3b779eefe4a466062ea331d9", l1Tx.TxID.String())
+
+	toForge = int64(maxInt64 - 1)
+	l1Tx = &L1Tx{
+		ToForgeL1TxsNum: &toForge,
+		Position:        maxInt64 - 1,
+		UserOrigin:      true,
+	}
+	l1Tx, err = NewL1Tx(l1Tx)
+	assert.NoError(t, err)
+	assert.Equal(t, "0x0003434eca58d35fd85795e3a6cce67c8801deb805ea1f7429cc270aa9f35ea403", l1Tx.TxID.String())
+
+	toForge = int64(0)
+	l1Tx = &L1Tx{
+		ToForgeL1TxsNum: &toForge,
+		Position:        0,
+		UserOrigin:      true,
+	}
+	l1Tx, err = NewL1Tx(l1Tx)
+	assert.NoError(t, err)
+	assert.Equal(t, "0x006bd2dd6bd408cbee33429358bf24fdc64612fbf8b1b4db604518f40ffd34b607", l1Tx.TxID.String())
 }

 func TestNewL1CoordinatorTx(t *testing.T) {
@@ -47,8 +78,7 @@ func TestNewL1CoordinatorTx(t *testing.T) {
 	}
 	l1Tx, err := NewL1Tx(l1Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x01274482d73df4dab34a1b6740adfca347a462513aa14e82f27b12f818d1b68c84",
-		l1Tx.TxID.String())
+	assert.Equal(t, "0x01274482d73df4dab34a1b6740adfca347a462513aa14e82f27b12f818d1b68c84", l1Tx.TxID.String())
 }

 func TestL1TxCompressedData(t *testing.T) {
@@ -201,8 +231,7 @@ func TestL1userTxByteParsers(t *testing.T) {
 func TestL1TxByteParsersCompatibility(t *testing.T) {
 	// Data from compatibility test
 	var pkComp babyjub.PublicKeyComp
-	pkCompB, err :=
-		hex.DecodeString("0dd02deb2c81068e7a0f7e327df80b4ab79ee1f41a7def613e73a20c32eece5a")
+	pkCompB, err := hex.DecodeString("0dd02deb2c81068e7a0f7e327df80b4ab79ee1f41a7def613e73a20c32eece5a")
 	require.NoError(t, err)
 	pkCompL := SwapEndianness(pkCompB)
 	err = pkComp.UnmarshalText([]byte(hex.EncodeToString(pkCompL)))
@@ -223,17 +252,16 @@ func TestL1TxByteParsersCompatibility(t *testing.T) {

 	encodedData, err := l1Tx.BytesUser()
 	require.NoError(t, err)
-	expected := "85dab5b9e2e361d0c208d77be90efcc0439b0a530dd02deb2c81068e7a0f7e327df80b4ab79e" +
-		"e1f41a7def613e73a20c32eece5a000001c638db52540be400459682f0000020039c0000053cb88d"
+	expected := "85dab5b9e2e361d0c208d77be90efcc0439b0a530dd02deb2c81068e7a0f7e327df80b4ab79ee1f41a7def613e73a20c32eece5a000001c638db52540be400459682f0000020039c0000053cb88d"
 	assert.Equal(t, expected, hex.EncodeToString(encodedData))
 }

 func TestL1CoordinatorTxByteParsers(t *testing.T) {
 	hermezAddress := ethCommon.HexToAddress("0xD6C850aeBFDC46D7F4c207e445cC0d6B0919BDBe")
 	chainID := big.NewInt(1337)
+	chainIDBytes := ethCommon.LeftPadBytes(chainID.Bytes(), 2)

-	privateKey, err :=
-		crypto.HexToECDSA("fad9c8855b740a0b7ed4c221dbad0f33a83a49cad6b3fe8d5817ac83d38b6a19")
+	privateKey, err := crypto.HexToECDSA("fad9c8855b740a0b7ed4c221dbad0f33a83a49cad6b3fe8d5817ac83d38b6a19")
 	require.NoError(t, err)

 	publicKey := privateKey.Public()
@@ -249,16 +277,18 @@ func TestL1CoordinatorTxByteParsers(t *testing.T) {
 	pkCompL := []byte("56ca90f80d7c374ae7485e9bcc47d4ac399460948da6aeeb899311097925a72c")
 	err = pkComp.UnmarshalText(pkCompL)
 	require.NoError(t, err)
+	bytesMessage1 := []byte("\x19Ethereum Signed Message:\n120")
+	bytesMessage2 := []byte("I authorize this babyjubjub key for hermez rollup account creation")

-	accCreationAuth := AccountCreationAuth{
-		EthAddr: fromEthAddr,
-		BJJ:     pkComp,
-	}
-
-	h, err := accCreationAuth.HashToSign(uint16(chainID.Uint64()), hermezAddress)
-	require.NoError(t, err)
-
-	signature, err := crypto.Sign(h, privateKey)
+	babyjubB := SwapEndianness(pkComp[:])
+	var data []byte
+	data = append(data, bytesMessage1...)
+	data = append(data, bytesMessage2...)
+	data = append(data, babyjubB[:]...)
+	data = append(data, chainIDBytes...)
+	data = append(data, hermezAddress.Bytes()...)
+	hash := crypto.Keccak256Hash(data)
+	signature, err := crypto.Sign(hash.Bytes(), privateKey)
 	require.NoError(t, err)
 	// Ethereum adds 27 to v
 	v := int(signature[64])
@@ -305,8 +335,7 @@ func TestL1CoordinatorTxByteParsersCompatibility(t *testing.T) {
 	signature = append(signature, v[:]...)

 	var pkComp babyjub.PublicKeyComp
-	pkCompB, err :=
-		hex.DecodeString("a2c2807ee39c3b3378738cff85a46a9465bb8fcf44ea597c33da9719be7c259c")
+	pkCompB, err := hex.DecodeString("a2c2807ee39c3b3378738cff85a46a9465bb8fcf44ea597c33da9719be7c259c")
 	require.NoError(t, err)
 	pkCompL := SwapEndianness(pkCompB)
 	err = pkComp.UnmarshalText([]byte(hex.EncodeToString(pkCompL)))
@@ -321,9 +350,7 @@ func TestL1CoordinatorTxByteParsersCompatibility(t *testing.T) {
 	encodeData, err := l1Tx.BytesCoordinatorTx(signature)
 	require.NoError(t, err)

-	expected, err := utils.HexDecode("1b186d7122ff7f654cfed3156719774898d573900c86599a885a706" +
-		"dbdffe5ea8cda71e5eb097e115405d84d1e7b464009b434b32c014a2df502d1f065ced8bc3ba2c28" +
-		"07ee39c3b3378738cff85a46a9465bb8fcf44ea597c33da9719be7c259c000000e7")
+	expected, err := utils.HexDecode("1b186d7122ff7f654cfed3156719774898d573900c86599a885a706dbdffe5ea8cda71e5eb097e115405d84d1e7b464009b434b32c014a2df502d1f065ced8bc3ba2c2807ee39c3b3378738cff85a46a9465bb8fcf44ea597c33da9719be7c259c000000e7")
 	require.NoError(t, err)

 	assert.Equal(t, expected, encodeData)
--- a/common/l2tx.go
+++ b/common/l2tx.go
@@ -10,7 +10,7 @@ import (

 // L2Tx is a struct that represents an already forged L2 tx
 type L2Tx struct {
-	// Stored in DB: mandatory fields
+	// Stored in DB: mandatory fileds
 	TxID     TxID     `meddler:"id"`
 	BatchNum BatchNum `meddler:"batch_num"` // batchNum in which this tx was forged.
 	Position int      `meddler:"position"`
@@ -21,10 +21,9 @@ type L2Tx struct {
 	Amount  *big.Int    `meddler:"amount,bigint"`
 	Fee     FeeSelector `meddler:"fee"`
 	// Nonce is filled by the TxProcessor
-	Nonce Nonce  `meddler:"nonce"`
-	Type  TxType `meddler:"type"`
-	// EthBlockNum in which this L2Tx was added to the queue
-	EthBlockNum int64 `meddler:"eth_block_num"`
+	Nonce       Nonce  `meddler:"nonce"`
+	Type        TxType `meddler:"type"`
+	EthBlockNum int64  `meddler:"eth_block_num"` // EthereumBlockNumber in which this L2Tx was added to the queue
 }

 // NewL2Tx returns the given L2Tx with the TxId & Type parameters calculated
--- a/common/l2tx_test.go
+++ b/common/l2tx_test.go
@@ -9,7 +9,7 @@ import (
 	"github.com/stretchr/testify/require"
 )

-func TestNewL2Tx(t *testing.T) {
+func TestNewL2TxID(t *testing.T) {
 	l2Tx := &L2Tx{
 		FromIdx: 87654,
 		ToIdx:   300,
@@ -19,8 +19,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err := NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x022669acda59b827d20ef5354a3eebd1dffb3972b0a6bf89d18bfd2efa0ab9f41e",
-		l2Tx.TxID.String())
+	assert.Equal(t, "0x022669acda59b827d20ef5354a3eebd1dffb3972b0a6bf89d18bfd2efa0ab9f41e", l2Tx.TxID.String())

 	l2Tx = &L2Tx{
 		FromIdx: 87654,
@@ -31,8 +30,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x029e7499a830f8f5eb17c07da48cf91415710f1bcbe0169d363ff91e81faf92fc2",
-		l2Tx.TxID.String())
+	assert.Equal(t, "0x029e7499a830f8f5eb17c07da48cf91415710f1bcbe0169d363ff91e81faf92fc2", l2Tx.TxID.String())

 	l2Tx = &L2Tx{
 		FromIdx: 87654,
@@ -44,8 +42,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x0255c70ed20e1b8935232e1b9c5884dbcc88a6e1a3454d24f2d77252eb2bb0b64e",
-		l2Tx.TxID.String())
+	assert.Equal(t, "0x0255c70ed20e1b8935232e1b9c5884dbcc88a6e1a3454d24f2d77252eb2bb0b64e", l2Tx.TxID.String())

 	l2Tx = &L2Tx{
 		FromIdx: 87654,
@@ -57,8 +54,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x0206b372f967061d1148bbcff679de38120e075141a80a07326d0f514c2efc6ca9",
-		l2Tx.TxID.String())
+	assert.Equal(t, "0x0206b372f967061d1148bbcff679de38120e075141a80a07326d0f514c2efc6ca9", l2Tx.TxID.String())

 	l2Tx = &L2Tx{
 		FromIdx: 1,
@@ -70,8 +66,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x0236f7ea5bccf78ba60baf56c058d235a844f9b09259fd0efa4f5f72a7d4a26618",
-		l2Tx.TxID.String())
+	assert.Equal(t, "0x0236f7ea5bccf78ba60baf56c058d235a844f9b09259fd0efa4f5f72a7d4a26618", l2Tx.TxID.String())

 	l2Tx = &L2Tx{
 		FromIdx: 999,
@@ -83,8 +78,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x02ac122f5b709ce190129fecbbe35bfd30c70e6433dbd85a8eb743d110906a1dc1",
-		l2Tx.TxID.String())
+	assert.Equal(t, "0x02ac122f5b709ce190129fecbbe35bfd30c70e6433dbd85a8eb743d110906a1dc1", l2Tx.TxID.String())

 	l2Tx = &L2Tx{
 		FromIdx: 4444,
@@ -96,8 +90,7 @@ func TestNewL2Tx(t *testing.T) {
 	}
 	l2Tx, err = NewL2Tx(l2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x02c674951a81881b7bc50db3b9e5efd97ac88550c7426ac548720e5057cfba515a",
-		l2Tx.TxID.String())
+	assert.Equal(t, "0x02c674951a81881b7bc50db3b9e5efd97ac88550c7426ac548720e5057cfba515a", l2Tx.TxID.String())
 }

 func TestL2TxByteParsers(t *testing.T) {
--- a/common/pooll2tx.go
+++ b/common/pooll2tx.go
@@ -16,8 +16,7 @@ import (
 // EmptyBJJComp contains the 32 byte array of a empty BabyJubJub PublicKey
 // Compressed. It is a valid point in the BabyJubJub curve, so does not give
 // errors when being decompressed.
-var EmptyBJJComp = babyjub.PublicKeyComp([32]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
+var EmptyBJJComp = babyjub.PublicKeyComp([32]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})

 // PoolL2Tx is a struct that represents a L2Tx sent by an account to the
 // coordinator that is waiting to be forged
@@ -74,7 +73,7 @@ func NewPoolL2Tx(tx *PoolL2Tx) (*PoolL2Tx, error) {
 	// If original Type doesn't match the correct one, return error
 	if txTypeOld != "" && txTypeOld != tx.Type {
 		return nil, tracerr.Wrap(fmt.Errorf("L2Tx.Type: %s, should be: %s",
-			txTypeOld, tx.Type))
+			tx.Type, txTypeOld))
 	}

 	txIDOld := tx.TxID
@@ -84,7 +83,7 @@ func NewPoolL2Tx(tx *PoolL2Tx) (*PoolL2Tx, error) {
 	// If original TxID doesn't match the correct one, return error
 	if txIDOld != (TxID{}) && txIDOld != tx.TxID {
 		return tx, tracerr.Wrap(fmt.Errorf("PoolL2Tx.TxID: %s, should be: %s",
-			txIDOld.String(), tx.TxID.String()))
+			tx.TxID.String(), txIDOld.String()))
 	}

 	return tx, nil
@@ -101,8 +100,6 @@ func (tx *PoolL2Tx) SetType() error {
 			tx.Type = TxTypeTransferToBJJ
 		} else if tx.ToEthAddr != FFAddr && tx.ToEthAddr != EmptyAddr {
 			tx.Type = TxTypeTransferToEthAddr
-		} else {
-			return tracerr.Wrap(errors.New("malformed transaction"))
 		}
 	} else {
 		return tracerr.Wrap(errors.New("malformed transaction"))
@@ -306,8 +303,10 @@ func (tx *PoolL2Tx) HashToSign(chainID uint16) (*big.Int, error) {
 		return nil, tracerr.Wrap(err)
 	}
 	copy(e1B[0:5], amountFloat40Bytes)
-	copy(e1B[5:25], tx.ToEthAddr[:])
+	toEthAddr := EthAddrToBigInt(tx.ToEthAddr)
+	copy(e1B[5:25], toEthAddr.Bytes())
 	e1 := new(big.Int).SetBytes(e1B[:])
+
 	rqToEthAddr := EthAddrToBigInt(tx.RqToEthAddr)

 	_, toBJJY := babyjub.UnpackSignY(tx.ToBJJ)
@@ -319,8 +318,7 @@ func (tx *PoolL2Tx) HashToSign(chainID uint16) (*big.Int, error) {

 	_, rqToBJJY := babyjub.UnpackSignY(tx.RqToBJJ)

-	return poseidon.Hash([]*big.Int{toCompressedData, e1, toBJJY, rqTxCompressedDataV2,
-		rqToEthAddr, rqToBJJY})
+	return poseidon.Hash([]*big.Int{toCompressedData, e1, toBJJY, rqTxCompressedDataV2, rqToEthAddr, rqToBJJY})
 }

 // VerifySignature returns true if the signature verification is correct for the given PublicKeyComp
--- a/common/pooll2tx_test.go
+++ b/common/pooll2tx_test.go
@@ -21,20 +21,17 @@ func TestNewPoolL2Tx(t *testing.T) {
 	}
 	poolL2Tx, err := NewPoolL2Tx(poolL2Tx)
 	assert.NoError(t, err)
-	assert.Equal(t, "0x022669acda59b827d20ef5354a3eebd1dffb3972b0a6bf89d18bfd2efa0ab9f41e",
-		poolL2Tx.TxID.String())
+	assert.Equal(t, "0x022669acda59b827d20ef5354a3eebd1dffb3972b0a6bf89d18bfd2efa0ab9f41e", poolL2Tx.TxID.String())
 }

 func TestTxCompressedDataAndTxCompressedDataV2JSVectors(t *testing.T) {
 	// test vectors values generated from javascript implementation
 	var skPositive babyjub.PrivateKey // 'Positive' refers to the sign
-	_, err := hex.Decode(skPositive[:],
-		[]byte("0001020304050607080900010203040506070809000102030405060708090001"))
+	_, err := hex.Decode(skPositive[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
 	assert.NoError(t, err)

 	var skNegative babyjub.PrivateKey // 'Negative' refers to the sign
-	_, err = hex.Decode(skNegative[:],
-		[]byte("0001020304050607080900010203040506070809000102030405060708090002"))
+	_, err = hex.Decode(skNegative[:], []byte("0001020304050607080900010203040506070809000102030405060708090002"))
 	assert.NoError(t, err)

 	amount, ok := new(big.Int).SetString("343597383670000000000000000000000000000000", 10)
@@ -126,8 +123,7 @@ func TestTxCompressedDataAndTxCompressedDataV2JSVectors(t *testing.T) {

 func TestRqTxCompressedDataV2(t *testing.T) {
 	var sk babyjub.PrivateKey
-	_, err := hex.Decode(sk[:],
-		[]byte("0001020304050607080900010203040506070809000102030405060708090001"))
+	_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
 	assert.NoError(t, err)
 	tx := PoolL2Tx{
 		RqFromIdx: 7,
@@ -146,8 +142,7 @@ func TestRqTxCompressedDataV2(t *testing.T) {
 	expected, ok := new(big.Int).SetString(expectedStr, 10)
 	assert.True(t, ok)
 	assert.Equal(t, expected.Bytes(), txCompressedData.Bytes())
-	assert.Equal(t, "010c000000000b0000000a0000000009000000000008000000000007",
-		hex.EncodeToString(txCompressedData.Bytes()))
+	assert.Equal(t, "010c000000000b0000000a0000000009000000000008000000000007", hex.EncodeToString(txCompressedData.Bytes()))
 }

 func TestHashToSign(t *testing.T) {
@@ -162,15 +157,13 @@ func TestHashToSign(t *testing.T) {
 	}
 	toSign, err := tx.HashToSign(chainID)
 	assert.NoError(t, err)
-	assert.Equal(t, "0b8abaf6b7933464e4450df2514da8b72606c02bf7f89bf6e54816fbda9d9d57",
-		hex.EncodeToString(toSign.Bytes()))
+	assert.Equal(t, "2d49ce1d4136e06f64e3eb1f79a346e6ee3e93ceeac909a57806a8d87005c263", hex.EncodeToString(toSign.Bytes()))
 }

 func TestVerifyTxSignature(t *testing.T) {
 	chainID := uint16(0)
 	var sk babyjub.PrivateKey
-	_, err := hex.Decode(sk[:],
-		[]byte("0001020304050607080900010203040506070809000102030405060708090001"))
+	_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
 	assert.NoError(t, err)
 	tx := PoolL2Tx{
 		FromIdx:     2,
@@ -184,49 +177,18 @@ func TestVerifyTxSignature(t *testing.T) {
 	}
 	toSign, err := tx.HashToSign(chainID)
 	assert.NoError(t, err)
-	assert.Equal(t,
-		"3144939470626721092564692894890580265754250231349521601298746071096761507003",
-		toSign.String())
+	assert.Equal(t, "1571327027383224465388301747239444557034990637650927918405777653988509342917", toSign.String())

 	sig := sk.SignPoseidon(toSign)
 	tx.Signature = sig.Compress()
 	assert.True(t, tx.VerifySignature(chainID, sk.Public().Compress()))
 }

-func TestVerifyTxSignatureEthAddrWith0(t *testing.T) {
-	chainID := uint16(5)
-	var sk babyjub.PrivateKey
-	_, err := hex.Decode(sk[:],
-		[]byte("02f0b4f87065af3797aaaf934e8b5c31563c17f2272fa71bd0146535bfbb4184"))
-	assert.NoError(t, err)
-	tx := PoolL2Tx{
-		FromIdx:   10659,
-		ToIdx:     0,
-		ToEthAddr: ethCommon.HexToAddress("0x0004308BD15Ead4F1173624dC289DBdcC806a309"),
-		Amount:    big.NewInt(5000),
-		TokenID:   0,
-		Nonce:     946,
-		Fee:       231,
-	}
-	toSign, err := tx.HashToSign(chainID)
-	assert.NoError(t, err)
-
-	sig := sk.SignPoseidon(toSign)
-	assert.Equal(t,
-		"f208b8298d5f37148ac3c0c03703272ea47b9f836851bcf8dd5f7e4e3b336ca1d2f6e92ad85dc25f174daf7a0abfd5f71dead3f059b783f4c4b2f56a18a47000",
-		sig.Compress().String(),
-	)
-	tx.Signature = sig.Compress()
-	assert.True(t, tx.VerifySignature(chainID, sk.Public().Compress()))
-}
-
 func TestDecompressEmptyBJJComp(t *testing.T) {
 	pkComp := EmptyBJJComp
 	pk, err := pkComp.Decompress()
 	require.NoError(t, err)
-	assert.Equal(t,
-		"2957874849018779266517920829765869116077630550401372566248359756137677864698",
-		pk.X.String())
+	assert.Equal(t, "2957874849018779266517920829765869116077630550401372566248359756137677864698", pk.X.String())
 	assert.Equal(t, "0", pk.Y.String())
 }

--- a/common/token.go
+++ b/common/token.go
@@ -15,9 +15,8 @@ const tokenIDBytesLen = 4

 // Token is a struct that represents an Ethereum token that is supported in Hermez network
 type Token struct {
-	TokenID TokenID `json:"id" meddler:"token_id"`
-	// EthBlockNum indicates the Ethereum block number in which this token was registered
-	EthBlockNum int64             `json:"ethereumBlockNum" meddler:"eth_block_num"`
+	TokenID     TokenID           `json:"id" meddler:"token_id"`
+	EthBlockNum int64             `json:"ethereumBlockNum" meddler:"eth_block_num"` // Ethereum block number in which this token was registered
 	EthAddr     ethCommon.Address `json:"ethereumAddress" meddler:"eth_addr"`
 	Name        string            `json:"name" meddler:"name"`
 	Symbol      string            `json:"symbol" meddler:"symbol"`
@@ -49,8 +48,7 @@ func (t TokenID) BigInt() *big.Int {
 // TokenIDFromBytes returns TokenID from a byte array
 func TokenIDFromBytes(b []byte) (TokenID, error) {
 	if len(b) != tokenIDBytesLen {
-		return 0, tracerr.Wrap(fmt.Errorf("can not parse TokenID, bytes len %d, expected 4",
-			len(b)))
+		return 0, tracerr.Wrap(fmt.Errorf("can not parse TokenID, bytes len %d, expected 4", len(b)))
 	}
 	tid := binary.BigEndian.Uint32(b[:4])
 	return TokenID(tid), nil
--- a/common/tx.go
+++ b/common/tx.go
@@ -15,12 +15,12 @@ import (
 )

 const (
-	// TxIDPrefixL1UserTx is the prefix that determines that the TxID is for
-	// a L1UserTx
+	// TXIDPrefixL1UserTx is the prefix that determines that the TxID is
+	// for a L1UserTx
 	//nolinter:gomnd
 	TxIDPrefixL1UserTx = byte(0)

-	// TxIDPrefixL1CoordTx is the prefix that determines that the TxID is
+	// TXIDPrefixL1CoordTx is the prefix that determines that the TxID is
 	// for a L1CoordinatorTx
 	//nolinter:gomnd
 	TxIDPrefixL1CoordTx = byte(1)
@@ -51,8 +51,7 @@ func (txid *TxID) Scan(src interface{}) error {
 		return tracerr.Wrap(fmt.Errorf("can't scan %T into TxID", src))
 	}
 	if len(srcB) != TxIDLen {
-		return tracerr.Wrap(fmt.Errorf("can't scan []byte of len %d into TxID, need %d",
-			len(srcB), TxIDLen))
+		return tracerr.Wrap(fmt.Errorf("can't scan []byte of len %d into TxID, need %d", len(srcB), TxIDLen))
 	}
 	copy(txid[:], srcB)
 	return nil
@@ -88,7 +87,7 @@ func (txid TxID) MarshalText() ([]byte, error) {
 	return []byte(txid.String()), nil
 }

-// UnmarshalText unmarshalls a TxID
+// UnmarshalText unmarshals a TxID
 func (txid *TxID) UnmarshalText(data []byte) error {
 	idStr := string(data)
 	id, err := NewTxIDFromString(idStr)
@@ -103,15 +102,13 @@ func (txid *TxID) UnmarshalText(data []byte) error {
 type TxType string

 const (
-	// TxTypeExit represents L2->L1 token transfer.  A leaf for this account appears in the exit
-	// tree of the block
+	// TxTypeExit represents L2->L1 token transfer.  A leaf for this account appears in the exit tree of the block
 	TxTypeExit TxType = "Exit"
 	// TxTypeTransfer represents L2->L2 token transfer
 	TxTypeTransfer TxType = "Transfer"
 	// TxTypeDeposit represents L1->L2 transfer
 	TxTypeDeposit TxType = "Deposit"
-	// TxTypeCreateAccountDeposit represents creation of a new leaf in the state tree
-	// (newAcconut) + L1->L2 transfer
+	// TxTypeCreateAccountDeposit represents creation of a new leaf in the state tree (newAcconut) + L1->L2 transfer
 	TxTypeCreateAccountDeposit TxType = "CreateAccountDeposit"
 	// TxTypeCreateAccountDepositTransfer represents L1->L2 transfer + L2->L2 transfer
 	TxTypeCreateAccountDepositTransfer TxType = "CreateAccountDepositTransfer"
@@ -127,31 +124,24 @@ const (
 	TxTypeTransferToBJJ TxType = "TransferToBJJ"
 )

-// Tx is a struct used by the TxSelector & BatchBuilder as a generic type generated from L1Tx &
-// PoolL2Tx
+// Tx is a struct used by the TxSelector & BatchBuilder as a generic type generated from L1Tx & PoolL2Tx
 type Tx struct {
 	// Generic
-	IsL1        bool     `meddler:"is_l1"`
-	TxID        TxID     `meddler:"id"`
-	Type        TxType   `meddler:"type"`
-	Position    int      `meddler:"position"`
-	FromIdx     Idx      `meddler:"from_idx"`
-	ToIdx       Idx      `meddler:"to_idx"`
-	Amount      *big.Int `meddler:"amount,bigint"`
-	AmountFloat float64  `meddler:"amount_f"`
-	TokenID     TokenID  `meddler:"token_id"`
-	USD         *float64 `meddler:"amount_usd"`
-	// BatchNum in which this tx was forged. If the tx is L2, this must be != 0
-	BatchNum *BatchNum `meddler:"batch_num"`
-	// Ethereum Block Number in which this L1Tx was added to the queue
-	EthBlockNum int64 `meddler:"eth_block_num"`
+	IsL1        bool      `meddler:"is_l1"`
+	TxID        TxID      `meddler:"id"`
+	Type        TxType    `meddler:"type"`
+	Position    int       `meddler:"position"`
+	FromIdx     Idx       `meddler:"from_idx"`
+	ToIdx       Idx       `meddler:"to_idx"`
+	Amount      *big.Int  `meddler:"amount,bigint"`
+	AmountFloat float64   `meddler:"amount_f"`
+	TokenID     TokenID   `meddler:"token_id"`
+	USD         *float64  `meddler:"amount_usd"`
+	BatchNum    *BatchNum `meddler:"batch_num"`     // batchNum in which this tx was forged. If the tx is L2, this must be != 0
+	EthBlockNum int64     `meddler:"eth_block_num"` // Ethereum Block Number in which this L1Tx was added to the queue
 	// L1
-	// ToForgeL1TxsNum in which the tx was forged / will be forged
-	ToForgeL1TxsNum *int64 `meddler:"to_forge_l1_txs_num"`
-	// UserOrigin is set to true if the tx was originated by a user, false if it was aoriginated
-	// by a coordinator. Note that this differ from the spec for implementation simplification
-	// purpposes
-	UserOrigin         *bool                 `meddler:"user_origin"`
+	ToForgeL1TxsNum    *int64                `meddler:"to_forge_l1_txs_num"` // toForgeL1TxsNum in which the tx was forged / will be forged
+	UserOrigin         *bool                 `meddler:"user_origin"`         // true if the tx was originated by a user, false if it was aoriginated by a coordinator. Note that this differ from the spec for implementation simplification purpposes
 	FromEthAddr        ethCommon.Address     `meddler:"from_eth_addr"`
 	FromBJJ            babyjub.PublicKeyComp `meddler:"from_bjj"`
 	DepositAmount      *big.Int              `meddler:"deposit_amount,bigintnull"`
--- a/common/tx_test.go
+++ b/common/tx_test.go
@@ -21,10 +21,8 @@ func TestSignatureConstant(t *testing.T) {
 func TestTxIDScannerValue(t *testing.T) {
 	txid0 := &TxID{}
 	txid1 := &TxID{}
-	txid0B := [TxIDLen]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2,
-		3, 4, 5, 6, 7, 8, 9, 0, 1, 2}
-	txid1B := [TxIDLen]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-		0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+	txid0B := [TxIDLen]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2}
+	txid1B := [TxIDLen]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}

 	copy(txid0[:], txid0B[:])
 	copy(txid1[:], txid1B[:])
--- a/common/utils_test.go
+++ b/common/utils_test.go
@@ -21,23 +21,16 @@ func TestBJJFromStringWithChecksum(t *testing.T) {
 	assert.NoError(t, err)

 	// expected values computed with js implementation
-	assert.Equal(t,
-		"2492816973395423007340226948038371729989170225696553239457870892535792679622",
-		pk.X.String())
-	assert.Equal(t,
-		"15238403086306505038849621710779816852318505119327426213168494964113886299863",
-		pk.Y.String())
+	assert.Equal(t, "2492816973395423007340226948038371729989170225696553239457870892535792679622", pk.X.String())
+	assert.Equal(t, "15238403086306505038849621710779816852318505119327426213168494964113886299863", pk.Y.String())
 }

 func TestRmEndingZeroes(t *testing.T) {
-	s0, err :=
-		merkletree.NewHashFromHex("0x0000000000000000000000000000000000000000000000000000000000000000")
+	s0, err := merkletree.NewHashFromHex("0x0000000000000000000000000000000000000000000000000000000000000000")
 	require.NoError(t, err)
-	s1, err :=
-		merkletree.NewHashFromHex("0x0000000000000000000000000000000000000000000000000000000000000001")
+	s1, err := merkletree.NewHashFromHex("0x0000000000000000000000000000000000000000000000000000000000000001")
 	require.NoError(t, err)
-	s2, err :=
-		merkletree.NewHashFromHex("0x0000000000000000000000000000000000000000000000000000000000000002")
+	s2, err := merkletree.NewHashFromHex("0x0000000000000000000000000000000000000000000000000000000000000002")
 	require.NoError(t, err)

 	// expect cropped last zeroes
--- a/common/zk.go
+++ b/common/zk.go
@@ -1,4 +1,4 @@
-// Package common zk.go contains all the common data structures used at the
+// Package common contains all the common data structures used at the
 // hermez-node, zk.go contains the zkSnark inputs used to generate the proof
 package common

@@ -67,7 +67,7 @@ type ZKInputs struct {

 	// accumulate fees
 	// FeePlanTokens contains all the tokenIDs for which the fees are being
-	// accumulated and those fees accumulated will be paid to the FeeIdxs
+	// accumulated and those fees accoumulated will be paid to the FeeIdxs
 	// array.  The order of FeeIdxs & FeePlanTokens & State3 must match.
 	// Coordinator fees are processed correlated such as:
 	// [FeePlanTokens[i], FeeIdxs[i]]
@@ -130,8 +130,8 @@ type ZKInputs struct {
 	RqOffset []*big.Int `json:"rqOffset"` // uint8 (max 3 bits), len: [maxTx]

 	// transaction L2 request data
-	// RqTxCompressedDataV2 big.Int (max 251 bits), len: [maxTx]
-	RqTxCompressedDataV2 []*big.Int `json:"rqTxCompressedDataV2"`
+	// RqTxCompressedDataV2
+	RqTxCompressedDataV2 []*big.Int `json:"rqTxCompressedDataV2"` // big.Int (max 251 bits), len: [maxTx]
 	// RqToEthAddr
 	RqToEthAddr []*big.Int `json:"rqToEthAddr"` // ethCommon.Address, len: [maxTx]
 	// RqToBJJAy
@@ -301,8 +301,7 @@ func (z ZKInputs) MarshalJSON() ([]byte, error) {
 }

 // NewZKInputs returns a pointer to an initialized struct of ZKInputs
-func NewZKInputs(chainID uint16, maxTx, maxL1Tx, maxFeeIdxs, nLevels uint32,
-	currentNumBatch *big.Int) *ZKInputs {
+func NewZKInputs(chainID uint16, maxTx, maxL1Tx, maxFeeIdxs, nLevels uint32, currentNumBatch *big.Int) *ZKInputs {
 	zki := &ZKInputs{}
 	zki.Metadata.MaxFeeIdxs = maxFeeIdxs
 	zki.Metadata.MaxLevels = uint32(48) //nolint:gomnd
@@ -481,7 +480,7 @@ func (z ZKInputs) ToHashGlobalData() ([]byte, error) {
 	b = append(b, newExitRoot...)

 	// [MAX_L1_TX * (2 * MAX_NLEVELS + 528) bits] L1TxsData
-	l1TxDataLen := (2*z.Metadata.MaxLevels + 528) //nolint:gomnd
+	l1TxDataLen := (2*z.Metadata.MaxLevels + 528)
 	l1TxsDataLen := (z.Metadata.MaxL1Tx * l1TxDataLen)
 	l1TxsData := make([]byte, l1TxsDataLen/8) //nolint:gomnd
 	for i := 0; i < len(z.Metadata.L1TxsData); i++ {
@@ -507,14 +506,11 @@ func (z ZKInputs) ToHashGlobalData() ([]byte, error) {
 		l2TxsData = append(l2TxsData, z.Metadata.L2TxsData[i]...)
 	}
 	if len(l2TxsData) > int(expectedL2TxsDataLen) {
-		return nil, tracerr.Wrap(fmt.Errorf("len(l2TxsData): %d, expected: %d",
-			len(l2TxsData), expectedL2TxsDataLen))
+		return nil, tracerr.Wrap(fmt.Errorf("len(l2TxsData): %d, expected: %d", len(l2TxsData), expectedL2TxsDataLen))
 	}

 	b = append(b, l2TxsData...)
-	l2TxsPadding := make([]byte,
-		(int(z.Metadata.MaxTx)-len(z.Metadata.L1TxsDataAvailability)-
-			len(z.Metadata.L2TxsData))*int(l2TxDataLen)/8) //nolint:gomnd
+	l2TxsPadding := make([]byte, (int(z.Metadata.MaxTx)-len(z.Metadata.L1TxsDataAvailability)-len(z.Metadata.L2TxsData))*int(l2TxDataLen)/8) //nolint:gomnd
 	b = append(b, l2TxsPadding...)

 	// [NLevels * MAX_TOKENS_FEE bits] feeTxsData
--- a/config/config.go
+++ b/config/config.go
@@ -9,7 +9,6 @@ import (
 	"github.com/BurntSushi/toml"
 	ethCommon "github.com/ethereum/go-ethereum/common"
 	"github.com/hermeznetwork/hermez-node/common"
-	"github.com/hermeznetwork/hermez-node/priceupdater"
 	"github.com/hermeznetwork/tracerr"
 	"github.com/iden3/go-iden3-crypto/babyjub"
 	"gopkg.in/go-playground/validator.v9"
@@ -36,30 +35,10 @@ type ServerProof struct {
 	URL string `validate:"required"`
 }

-// ForgeBatchGasCost is the costs associated to a ForgeBatch transaction, split
-// into different parts to be used in a formula.
-type ForgeBatchGasCost struct {
-	Fixed     uint64 `validate:"required"`
-	L1UserTx  uint64 `validate:"required"`
-	L1CoordTx uint64 `validate:"required"`
-	L2Tx      uint64 `validate:"required"`
-}
-
-// CoordinatorAPI specifies the configuration parameters of the API in mode
-// coordinator
-type CoordinatorAPI struct {
-	// Coordinator enables the coordinator API endpoints
-	Coordinator bool
-}
-
 // Coordinator is the coordinator specific configuration.
 type Coordinator struct {
 	// ForgerAddress is the address under which this coordinator is forging
 	ForgerAddress ethCommon.Address `validate:"required"`
-	// MinimumForgeAddressBalance is the minimum balance the forger address
-	// needs to start the coordinator in wei. Of set to 0, the coordinator
-	// will not check the balance before starting.
-	MinimumForgeAddressBalance *big.Int
 	// FeeAccount is the Hermez account that the coordinator uses to receive fees
 	FeeAccount struct {
 		// Address is the ethereum address of the account to receive fees
@@ -81,7 +60,7 @@ type Coordinator struct {
 	// checking the next block), used to decide when to stop scheduling new
 	// batches (by stopping the pipeline).
 	// For example, if we are at block 10 and ScheduleBatchBlocksAheadCheck
-	// is 5, even though at block 11 we canForge, the pipeline will be
+	// is 5, eventhough at block 11 we canForge, the pipeline will be
 	// stopped if we can't forge at block 15.
 	// This value should be the expected number of blocks it takes between
 	// scheduling a batch and having it mined.
@@ -91,7 +70,7 @@ type Coordinator struct {
 	// from the next block; used to decide when to stop sending batches to
 	// the smart contract.
 	// For example, if we are at block 10 and SendBatchBlocksMarginCheck is
-	// 5, even though at block 11 we canForge, the batch will be discarded
+	// 5, eventhough at block 11 we canForge, the batch will be discarded
 	// if we can't forge at block 15.
 	SendBatchBlocksMarginCheck int64
 	// ProofServerPollInterval is the waiting interval between polling the
@@ -109,20 +88,6 @@ type Coordinator struct {
 	// to 0s, the coordinator will continuously forge even if the batches
 	// are empty.
 	ForgeNoTxsDelay Duration `validate:"-"`
-	// MustForgeAtSlotDeadline enables the coordinator to forge slots if
-	// the empty slots reach the slot deadline.
-	MustForgeAtSlotDeadline bool
-	// IgnoreSlotCommitment disables forcing the coordinator to forge a
-	// slot immediately when the slot is not committed. If set to false,
-	// the coordinator will immediately forge a batch at the beginning of a
-	// slot if it's the slot winner.
-	IgnoreSlotCommitment bool
-	// ForgeOncePerSlotIfTxs will make the coordinator forge at most one
-	// batch per slot, only if there are included txs in that batch, or
-	// pending l1UserTxs in the smart contract.  Setting this parameter
-	// overrides `ForgeDelay`, `ForgeNoTxsDelay`, `MustForgeAtSlotDeadline`
-	// and `IgnoreSlotCommitment`.
-	ForgeOncePerSlotIfTxs bool
 	// SyncRetryInterval is the waiting interval between calls to the main
 	// handler of a synced block after an error
 	SyncRetryInterval Duration `validate:"required"`
@@ -148,7 +113,7 @@ type Coordinator struct {
 		// L2Txs is reached, L2Txs older than TTL will be deleted.
 		TTL Duration `validate:"required"`
 		// PurgeBatchDelay is the delay between batches to purge
-		// outdated transactions. Outdated L2Txs are those that have
+		// outdated transactions.  Oudated L2Txs are those that have
 		// been forged or marked as invalid for longer than the
 		// SafetyPeriod and pending L2Txs that have been in the pool
 		// for longer than TTL once there are MaxTxs.
@@ -158,7 +123,7 @@ type Coordinator struct {
 		// nonce.
 		InvalidateBatchDelay int64 `validate:"required"`
 		// PurgeBlockDelay is the delay between blocks to purge
-		// outdated transactions. Outdated L2Txs are those that have
+		// outdated transactions.  Oudated L2Txs are those that have
 		// been forged or marked as invalid for longer than the
 		// SafetyPeriod and pending L2Txs that have been in the pool
 		// for longer than TTL once there are MaxTxs.
@@ -190,7 +155,7 @@ type Coordinator struct {
 		MaxGasPrice *big.Int `validate:"required"`
 		// GasPriceIncPerc is the percentage increase of gas price set
 		// in an ethereum transaction from the suggested gas price by
-		// the ethereum node
+		// the ehtereum node
 		GasPriceIncPerc int64
 		// CheckLoopInterval is the waiting interval between receipt
 		// checks of ethereum transactions in the TxManager
@@ -215,11 +180,11 @@ type Coordinator struct {
 			// Password used to decrypt the keys in the keystore
 			Password string `validate:"required"`
 		} `validate:"required"`
-		// ForgeBatchGasCost contains the cost of each action in the
-		// ForgeBatch transaction.
-		ForgeBatchGasCost ForgeBatchGasCost `validate:"required"`
 	} `validate:"required"`
-	API   CoordinatorAPI `validate:"required"`
+	API struct {
+		// Coordinator enables the coordinator API endpoints
+		Coordinator bool
+	} `validate:"required"`
 	Debug struct {
 		// BatchPath if set, specifies the path where batchInfo is stored
 		// in JSON in every step/update of the pipeline
@@ -234,58 +199,15 @@ type Coordinator struct {
 	}
 }

-// PostgreSQL is the postgreSQL configuration parameters.  It's possible to use
-// diferentiated SQL connections for read/write.  If the read configuration is
-// not provided, the write one it's going to be used for both reads and writes
-type PostgreSQL struct {
-	// Port of the PostgreSQL write server
-	PortWrite int `validate:"required"`
-	// Host of the PostgreSQL write server
-	HostWrite string `validate:"required"`
-	// User of the PostgreSQL write server
-	UserWrite string `validate:"required"`
-	// Password of the PostgreSQL write server
-	PasswordWrite string `validate:"required"`
-	// Name of the PostgreSQL write server database
-	NameWrite string `validate:"required"`
-	// Port of the PostgreSQL read server
-	PortRead int
-	// Host of the PostgreSQL read server
-	HostRead string
-	// User of the PostgreSQL read server
-	UserRead string
-	// Password of the PostgreSQL read server
-	PasswordRead string
-	// Name of the PostgreSQL read server database
-	NameRead string
-}
-
-// NodeDebug specifies debug configuration parameters
-type NodeDebug struct {
-	// APIAddress is the address where the debugAPI will listen if
-	// set
-	APIAddress string
-	// MeddlerLogs enables meddler debug mode, where unused columns and struct
-	// fields will be logged
-	MeddlerLogs bool
-	// GinDebugMode sets Gin-Gonic (the web framework) to run in
-	// debug mode
-	GinDebugMode bool
-}
-
 // Node is the hermez node configuration.
 type Node struct {
 	PriceUpdater struct {
 		// Interval between price updater calls
-		Interval Duration `validate:"required"`
-		// URLBitfinexV2 is the URL of bitfinex V2 API
-		URLBitfinexV2 string `validate:"required"`
-		// URLCoinGeckoV3 is the URL of coingecko V3 API
-		URLCoinGeckoV3 string `validate:"required"`
-		// DefaultUpdateMethod to get token prices
-		DefaultUpdateMethod priceupdater.UpdateMethodType `validate:"required"`
-		// TokensConfig to specify how each token get it's price updated
-		TokensConfig []priceupdater.TokenConfig
+		Interval Duration `valudate:"required"`
+		// URL of the token prices provider
+		URL string `valudate:"required"`
+		// Type of the API of the token prices provider
+		Type string `valudate:"required"`
 	} `validate:"required"`
 	StateDB struct {
 		// Path where the synchronizer StateDB is stored
@@ -293,8 +215,19 @@ type Node struct {
 		// Keep is the number of checkpoints to keep
 		Keep int `validate:"required"`
 	} `validate:"required"`
-	PostgreSQL PostgreSQL `validate:"required"`
-	Web3       struct {
+	PostgreSQL struct {
+		// Port of the PostgreSQL server
+		Port int `validate:"required"`
+		// Host of the PostgreSQL server
+		Host string `validate:"required"`
+		// User of the PostgreSQL server
+		User string `validate:"required"`
+		// Password of the PostgreSQL server
+		Password string `validate:"required"`
+		// Name of the PostgreSQL server database
+		Name string `validate:"required"`
+	} `validate:"required"`
+	Web3 struct {
 		// URL is the URL of the web3 ethereum-node RPC server
 		URL string `validate:"required"`
 	} `validate:"required"`
@@ -324,7 +257,6 @@ type Node struct {
 		// TokenHEZ address
 		TokenHEZName string `validate:"required"`
 	} `validate:"required"`
-	// API specifies the configuration parameters of the API
 	API struct {
 		// Address where the API will listen if set
 		Address string
@@ -342,43 +274,15 @@ type Node struct {
 		// can wait to stablish a SQL connection
 		SQLConnectionTimeout Duration
 	} `validate:"required"`
-	Debug       NodeDebug   `validate:"required"`
-	Coordinator Coordinator `validate:"-"`
-}
-
-// APIServer is the api server configuration parameters
-type APIServer struct {
-	// NodeAPI specifies the configuration parameters of the API
-	API struct {
-		// Address where the API will listen if set
-		Address string `validate:"required"`
-		// Explorer enables the Explorer API endpoints
-		Explorer bool
-		// Maximum concurrent connections allowed between API and SQL
-		MaxSQLConnections int `validate:"required"`
-		// SQLConnectionTimeout is the maximum amount of time that an API request
-		// can wait to stablish a SQL connection
-		SQLConnectionTimeout Duration
-	} `validate:"required"`
-	PostgreSQL  PostgreSQL `validate:"required"`
-	Coordinator struct {
-		API struct {
-			// Coordinator enables the coordinator API endpoints
-			Coordinator bool
-		} `validate:"required"`
-		L2DB struct {
-			// MaxTxs is the maximum number of pending L2Txs that can be
-			// stored in the pool.  Once this number of pending L2Txs is
-			// reached, inserts to the pool will be denied until some of
-			// the pending txs are forged.
-			MaxTxs uint32 `validate:"required"`
-			// MinFeeUSD is the minimum fee in USD that a tx must pay in
-			// order to be accepted into the pool.  Txs with lower than
-			// minimum fee will be rejected at the API level.
-			MinFeeUSD float64
-		} `validate:"required"`
+	Debug struct {
+		// APIAddress is the address where the debugAPI will listen if
+		// set
+		APIAddress string
+		// MeddlerLogs enables meddler debug mode, where unused columns and struct
+		// fields will be logged
+		MeddlerLogs bool
 	}
-	Debug NodeDebug `validate:"required"`
+	Coordinator Coordinator `validate:"-"`
 }

 // Load loads a generic config.
@@ -394,8 +298,8 @@ func Load(path string, cfg interface{}) error {
 	return nil
 }

-// LoadNode loads the Node configuration from path.
-func LoadNode(path string, coordinator bool) (*Node, error) {
+// LoadCoordinator loads the Coordinator configuration from path.
+func LoadCoordinator(path string) (*Node, error) {
 	var cfg Node
 	if err := Load(path, &cfg); err != nil {
 		return nil, tracerr.Wrap(fmt.Errorf("error loading node configuration file: %w", err))
@@ -404,28 +308,21 @@ func LoadNode(path string, coordinator bool) (*Node, error) {
 	if err := validate.Struct(cfg); err != nil {
 		return nil, tracerr.Wrap(fmt.Errorf("error validating configuration file: %w", err))
 	}
-	if coordinator {
-		if err := validate.Struct(cfg.Coordinator); err != nil {
-			return nil, tracerr.Wrap(fmt.Errorf("error validating configuration file: %w", err))
-		}
+	if err := validate.Struct(cfg.Coordinator); err != nil {
+		return nil, tracerr.Wrap(fmt.Errorf("error validating configuration file: %w", err))
 	}
 	return &cfg, nil
 }

-// LoadAPIServer loads the APIServer configuration from path.
-func LoadAPIServer(path string, coordinator bool) (*APIServer, error) {
-	var cfg APIServer
+// LoadNode loads the Node configuration from path.
+func LoadNode(path string) (*Node, error) {
+	var cfg Node
 	if err := Load(path, &cfg); err != nil {
-		return nil, tracerr.Wrap(fmt.Errorf("error loading apiServer configuration file: %w", err))
+		return nil, tracerr.Wrap(fmt.Errorf("error loading node configuration file: %w", err))
 	}
 	validate := validator.New()
 	if err := validate.Struct(cfg); err != nil {
 		return nil, tracerr.Wrap(fmt.Errorf("error validating configuration file: %w", err))
 	}
-	if coordinator {
-		if err := validate.Struct(cfg.Coordinator); err != nil {
-			return nil, tracerr.Wrap(fmt.Errorf("error validating configuration file: %w", err))
-		}
-	}
 	return &cfg, nil
 }
--- a/coordinator/batch.go
+++ b/coordinator/batch.go
@@ -8,7 +8,6 @@ import (
 	"path"
 	"time"

-	"github.com/ethereum/go-ethereum/accounts/abi/bind"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/hermeznetwork/hermez-node/common"
 	"github.com/hermeznetwork/hermez-node/eth"
@@ -85,15 +84,15 @@ type BatchInfo struct {
 	PublicInputs          []*big.Int
 	L1Batch               bool
 	VerifierIdx           uint8
-	L1UserTxs             []common.L1Tx
+	L1UserTxsExtra        []common.L1Tx
 	L1CoordTxs            []common.L1Tx
 	L1CoordinatorTxsAuths [][]byte
 	L2Txs                 []common.L2Tx
 	CoordIdxs             []common.Idx
 	ForgeBatchArgs        *eth.RollupForgeBatchArgs
-	Auth                  *bind.TransactOpts `json:"-"`
-	EthTx                 *types.Transaction
-	EthTxErr              error
+	// FeesInfo
+	EthTx    *types.Transaction
+	EthTxErr error
 	// SendTimestamp  the time of batch sent to ethereum
 	SendTimestamp time.Time
 	Receipt       *types.Receipt
--- a/coordinator/coordinator.go
+++ b/coordinator/coordinator.go
@@ -11,7 +11,6 @@ import (
 	ethCommon "github.com/ethereum/go-ethereum/common"
 	"github.com/hermeznetwork/hermez-node/batchbuilder"
 	"github.com/hermeznetwork/hermez-node/common"
-	"github.com/hermeznetwork/hermez-node/config"
 	"github.com/hermeznetwork/hermez-node/db/historydb"
 	"github.com/hermeznetwork/hermez-node/db/l2db"
 	"github.com/hermeznetwork/hermez-node/eth"
@@ -24,8 +23,9 @@ import (
 )

 var (
-	errLastL1BatchNotSynced = fmt.Errorf("last L1Batch not synced yet")
-	errSkipBatchByPolicy    = fmt.Errorf("skip batch by policy")
+	errLastL1BatchNotSynced  = fmt.Errorf("last L1Batch not synced yet")
+	errForgeNoTxsBeforeDelay = fmt.Errorf("no txs to forge and we haven't reached the forge no txs delay")
+	errForgeBeforeDelay      = fmt.Errorf("we haven't reached the forge delay")
 )

 const (
@@ -52,7 +52,7 @@ type Config struct {
 	// checking the next block), used to decide when to stop scheduling new
 	// batches (by stopping the pipeline).
 	// For example, if we are at block 10 and ScheduleBatchBlocksAheadCheck
-	// is 5, even though at block 11 we canForge, the pipeline will be
+	// is 5, eventhough at block 11 we canForge, the pipeline will be
 	// stopped if we can't forge at block 15.
 	// This value should be the expected number of blocks it takes between
 	// scheduling a batch and having it mined.
@@ -62,7 +62,7 @@ type Config struct {
 	// from the next block; used to decide when to stop sending batches to
 	// the smart contract.
 	// For example, if we are at block 10 and SendBatchBlocksMarginCheck is
-	// 5, even though at block 11 we canForge, the batch will be discarded
+	// 5, eventhough at block 11 we canForge, the batch will be discarded
 	// if we can't forge at block 15.
 	// This value should be the expected number of blocks it takes between
 	// sending a batch and having it mined.
@@ -82,20 +82,6 @@ type Config struct {
 	// to 0s, the coordinator will continuously forge even if the batches
 	// are empty.
 	ForgeNoTxsDelay time.Duration
-	// MustForgeAtSlotDeadline enables the coordinator to forge slots if
-	// the empty slots reach the slot deadline.
-	MustForgeAtSlotDeadline bool
-	// IgnoreSlotCommitment disables forcing the coordinator to forge a
-	// slot immediately when the slot is not committed. If set to false,
-	// the coordinator will immediately forge a batch at the beginning of
-	// a slot if it's the slot winner.
-	IgnoreSlotCommitment bool
-	// ForgeOncePerSlotIfTxs will make the coordinator forge at most one
-	// batch per slot, only if there are included txs in that batch, or
-	// pending l1UserTxs in the smart contract.  Setting this parameter
-	// overrides `ForgeDelay`, `ForgeNoTxsDelay`, `MustForgeAtSlotDeadline`
-	// and `IgnoreSlotCommitment`.
-	ForgeOncePerSlotIfTxs bool
 	// SyncRetryInterval is the waiting interval between calls to the main
 	// handler of a synced block after an error
 	SyncRetryInterval time.Duration
@@ -129,10 +115,7 @@ type Config struct {
 	Purger         PurgerCfg
 	// VerifierIdx is the index of the verifier contract registered in the
 	// smart contract
-	VerifierIdx uint8
-	// ForgeBatchGasCost contains the cost of each action in the
-	// ForgeBatch transaction.
-	ForgeBatchGasCost config.ForgeBatchGasCost
+	VerifierIdx       uint8
 	TxProcessorConfig txprocessor.Config
 }

@@ -157,8 +140,8 @@ type Coordinator struct {
 	pipelineNum       int       // Pipeline sequential number.  The first pipeline is 1
 	pipelineFromBatch fromBatch // batch from which we started the pipeline
 	provers           []prover.Client
-	consts            common.SCConsts
-	vars              common.SCVariables
+	consts            synchronizer.SCConsts
+	vars              synchronizer.SCVariables
 	stats             synchronizer.Stats
 	started           bool

@@ -198,8 +181,8 @@ func NewCoordinator(cfg Config,
 	batchBuilder *batchbuilder.BatchBuilder,
 	serverProofs []prover.Client,
 	ethClient eth.ClientInterface,
-	scConsts *common.SCConsts,
-	initSCVars *common.SCVariables,
+	scConsts *synchronizer.SCConsts,
+	initSCVars *synchronizer.SCVariables,
 ) (*Coordinator, error) {
 	// nolint reason: hardcoded `1.0`, by design the percentage can't be over 100%
 	if cfg.L1BatchTimeoutPerc >= 1.0 { //nolint:gomnd
@@ -288,13 +271,13 @@ type MsgSyncBlock struct {
 	Batches []common.BatchData
 	// Vars contains each Smart Contract variables if they are updated, or
 	// nil if they haven't changed.
-	Vars common.SCVariablesPtr
+	Vars synchronizer.SCVariablesPtr
 }

 // MsgSyncReorg indicates a reorg
 type MsgSyncReorg struct {
 	Stats synchronizer.Stats
-	Vars  common.SCVariablesPtr
+	Vars  synchronizer.SCVariablesPtr
 }

 // MsgStopPipeline indicates a signal to reset the pipeline
@@ -313,7 +296,7 @@ func (c *Coordinator) SendMsg(ctx context.Context, msg interface{}) {
 	}
 }

-func updateSCVars(vars *common.SCVariables, update common.SCVariablesPtr) {
+func updateSCVars(vars *synchronizer.SCVariables, update synchronizer.SCVariablesPtr) {
 	if update.Rollup != nil {
 		vars.Rollup = *update.Rollup
 	}
@@ -325,13 +308,12 @@ func updateSCVars(vars *common.SCVariables, update common.SCVariablesPtr) {
 	}
 }

-func (c *Coordinator) syncSCVars(vars common.SCVariablesPtr) {
+func (c *Coordinator) syncSCVars(vars synchronizer.SCVariablesPtr) {
 	updateSCVars(&c.vars, vars)
 }

 func canForge(auctionConstants *common.AuctionConstants, auctionVars *common.AuctionVariables,
-	currentSlot *common.Slot, nextSlot *common.Slot, addr ethCommon.Address, blockNum int64,
-	mustForgeAtDeadline bool) bool {
+	currentSlot *common.Slot, nextSlot *common.Slot, addr ethCommon.Address, blockNum int64) bool {
 	if blockNum < auctionConstants.GenesisBlockNum {
 		log.Infow("canForge: requested blockNum is < genesis", "blockNum", blockNum,
 			"genesis", auctionConstants.GenesisBlockNum)
@@ -356,7 +338,7 @@ func canForge(auctionConstants *common.AuctionConstants, auctionVars *common.Auc
 			"block", blockNum)
 		anyoneForge = true
 	}
-	if slot.Forger == addr || (anyoneForge && mustForgeAtDeadline) {
+	if slot.Forger == addr || anyoneForge {
 		return true
 	}
 	log.Debugw("canForge: can't forge", "slot.Forger", slot.Forger)
@@ -366,14 +348,14 @@ func canForge(auctionConstants *common.AuctionConstants, auctionVars *common.Auc
 func (c *Coordinator) canForgeAt(blockNum int64) bool {
 	return canForge(&c.consts.Auction, &c.vars.Auction,
 		&c.stats.Sync.Auction.CurrentSlot, &c.stats.Sync.Auction.NextSlot,
-		c.cfg.ForgerAddress, blockNum, c.cfg.MustForgeAtSlotDeadline)
+		c.cfg.ForgerAddress, blockNum)
 }

 func (c *Coordinator) canForge() bool {
 	blockNum := c.stats.Eth.LastBlock.Num + 1
 	return canForge(&c.consts.Auction, &c.vars.Auction,
 		&c.stats.Sync.Auction.CurrentSlot, &c.stats.Sync.Auction.NextSlot,
-		c.cfg.ForgerAddress, blockNum, c.cfg.MustForgeAtSlotDeadline)
+		c.cfg.ForgerAddress, blockNum)
 }

 func (c *Coordinator) syncStats(ctx context.Context, stats *synchronizer.Stats) error {
@@ -401,23 +383,11 @@ func (c *Coordinator) syncStats(ctx context.Context, stats *synchronizer.Stats)
 				fromBatch.ForgerAddr = c.cfg.ForgerAddress
 				fromBatch.StateRoot = big.NewInt(0)
 			}
-			// Before starting the pipeline make sure we reset any
-			// l2tx from the pool that was forged in a batch that
-			// didn't end up being mined.  We are already doing
-			// this in handleStopPipeline, but we do it again as a
-			// failsafe in case the last synced batchnum is
-			// different than in the previous call to l2DB.Reorg,
-			// or in case the node was restarted when there was a
-			// started batch that included l2txs but was not mined.
-			if err := c.l2DB.Reorg(fromBatch.BatchNum); err != nil {
-				return tracerr.Wrap(err)
-			}
 			var err error
 			if c.pipeline, err = c.newPipeline(ctx); err != nil {
 				return tracerr.Wrap(err)
 			}
 			c.pipelineFromBatch = fromBatch
-			// Start the pipeline
 			if err := c.pipeline.Start(fromBatch.BatchNum, stats, &c.vars); err != nil {
 				c.pipeline = nil
 				return tracerr.Wrap(err)
@@ -487,8 +457,7 @@ func (c *Coordinator) handleReorg(ctx context.Context, msg *MsgSyncReorg) error
 // handleStopPipeline handles stopping the pipeline.  If failedBatchNum is 0,
 // the next pipeline will start from the last state of the synchronizer,
 // otherwise, it will state from failedBatchNum-1.
-func (c *Coordinator) handleStopPipeline(ctx context.Context, reason string,
-	failedBatchNum common.BatchNum) error {
+func (c *Coordinator) handleStopPipeline(ctx context.Context, reason string, failedBatchNum common.BatchNum) error {
 	batchNum := c.stats.Sync.LastBatch.BatchNum
 	if failedBatchNum != 0 {
 		batchNum = failedBatchNum - 1
@@ -539,7 +508,7 @@ func (c *Coordinator) Start() {

 	c.wg.Add(1)
 	go func() {
-		timer := time.NewTimer(longWaitDuration)
+		waitCh := time.After(longWaitDuration)
 		for {
 			select {
 			case <-c.ctx.Done():
@@ -551,27 +520,24 @@ func (c *Coordinator) Start() {
 					continue
 				} else if err != nil {
 					log.Errorw("Coordinator.handleMsg", "err", err)
-					if !timer.Stop() {
-						<-timer.C
-					}
-					timer.Reset(c.cfg.SyncRetryInterval)
+					waitCh = time.After(c.cfg.SyncRetryInterval)
 					continue
 				}
-			case <-timer.C:
-				timer.Reset(longWaitDuration)
+				waitCh = time.After(longWaitDuration)
+			case <-waitCh:
 				if !c.stats.Synced() {
+					waitCh = time.After(longWaitDuration)
 					continue
 				}
 				if err := c.syncStats(c.ctx, &c.stats); c.ctx.Err() != nil {
+					waitCh = time.After(longWaitDuration)
 					continue
 				} else if err != nil {
 					log.Errorw("Coordinator.syncStats", "err", err)
-					if !timer.Stop() {
-						<-timer.C
-					}
-					timer.Reset(c.cfg.SyncRetryInterval)
+					waitCh = time.After(c.cfg.SyncRetryInterval)
 					continue
 				}
+				waitCh = time.After(longWaitDuration)
 			}
 		}
 	}()
--- a/coordinator/coordinator_test.go
+++ b/coordinator/coordinator_test.go
@@ -105,8 +105,8 @@ func newTestModules(t *testing.T) modules {
 	db, err := dbUtils.InitSQLDB(5432, "localhost", "hermez", pass, "hermez")
 	require.NoError(t, err)
 	test.WipeDB(db)
-	l2DB := l2db.NewL2DB(db, db, 10, 100, 0.0, 24*time.Hour, nil)
-	historyDB := historydb.NewHistoryDB(db, db, nil)
+	l2DB := l2db.NewL2DB(db, 10, 100, 0.0, 24*time.Hour, nil)
+	historyDB := historydb.NewHistoryDB(db, nil)

 	txSelDBPath, err = ioutil.TempDir("", "tmpTxSelDB")
 	require.NoError(t, err)
@@ -126,8 +126,7 @@ func newTestModules(t *testing.T) modules {
 	batchBuilderDBPath, err = ioutil.TempDir("", "tmpBatchBuilderDB")
 	require.NoError(t, err)
 	deleteme = append(deleteme, batchBuilderDBPath)
-	batchBuilder, err := batchbuilder.NewBatchBuilder(batchBuilderDBPath, syncStateDB, 0,
-		uint64(nLevels))
+	batchBuilder, err := batchbuilder.NewBatchBuilder(batchBuilderDBPath, syncStateDB, 0, uint64(nLevels))
 	assert.NoError(t, err)

 	return modules{
@@ -159,15 +158,14 @@ func newTestCoordinator(t *testing.T, forgerAddr ethCommon.Address, ethClient *t
 	deleteme = append(deleteme, debugBatchPath)

 	conf := Config{
-		ForgerAddress:           forgerAddr,
-		ConfirmBlocks:           5,
-		L1BatchTimeoutPerc:      0.5,
-		EthClientAttempts:       5,
-		SyncRetryInterval:       400 * time.Microsecond,
-		EthClientAttemptsDelay:  100 * time.Millisecond,
-		TxManagerCheckInterval:  300 * time.Millisecond,
-		DebugBatchPath:          debugBatchPath,
-		MustForgeAtSlotDeadline: true,
+		ForgerAddress:          forgerAddr,
+		ConfirmBlocks:          5,
+		L1BatchTimeoutPerc:     0.5,
+		EthClientAttempts:      5,
+		SyncRetryInterval:      400 * time.Microsecond,
+		EthClientAttemptsDelay: 100 * time.Millisecond,
+		TxManagerCheckInterval: 300 * time.Millisecond,
+		DebugBatchPath:         debugBatchPath,
 		Purger: PurgerCfg{
 			PurgeBatchDelay:      10,
 			PurgeBlockDelay:      10,
@@ -189,12 +187,12 @@ func newTestCoordinator(t *testing.T, forgerAddr ethCommon.Address, ethClient *t
 		&prover.MockClient{Delay: 400 * time.Millisecond},
 	}

-	scConsts := &common.SCConsts{
+	scConsts := &synchronizer.SCConsts{
 		Rollup:   *ethClientSetup.RollupConstants,
 		Auction:  *ethClientSetup.AuctionConstants,
 		WDelayer: *ethClientSetup.WDelayerConstants,
 	}
-	initSCVars := &common.SCVariables{
+	initSCVars := &synchronizer.SCVariables{
 		Rollup:   *ethClientSetup.RollupVariables,
 		Auction:  *ethClientSetup.AuctionVariables,
 		WDelayer: *ethClientSetup.WDelayerVariables,
@@ -207,7 +205,7 @@ func newTestCoordinator(t *testing.T, forgerAddr ethCommon.Address, ethClient *t

 func newTestSynchronizer(t *testing.T, ethClient *test.Client, ethClientSetup *test.ClientSetup,
 	modules modules) *synchronizer.Synchronizer {
-	sync, err := synchronizer.NewSynchronizer(ethClient, modules.historyDB, modules.l2DB, modules.stateDB,
+	sync, err := synchronizer.NewSynchronizer(ethClient, modules.historyDB, modules.stateDB,
 		synchronizer.Config{
 			StatsRefreshPeriod: 0 * time.Second,
 		})
@@ -392,10 +390,6 @@ func TestCoordCanForge(t *testing.T) {
 	assert.Equal(t, true, coord.canForge())
 	assert.Equal(t, true, bootCoord.canForge())

-	// Anyone can forge but the node MustForgeAtSlotDeadline as set as false
-	coord.cfg.MustForgeAtSlotDeadline = false
-	assert.Equal(t, false, coord.canForge())
-
 	// Slot 3. coordinator bid, so the winner is the coordinator
 	stats.Eth.LastBlock.Num = ethClientSetup.AuctionConstants.GenesisBlockNum +
 		3*int64(ethClientSetup.AuctionConstants.BlocksPerSlot)
@@ -523,7 +517,7 @@ func TestCoordinatorStress(t *testing.T) {
 	wg.Add(1)
 	go func() {
 		for {
-			blockData, _, err := syn.Sync(ctx, nil)
+			blockData, _, err := syn.Sync2(ctx, nil)
 			if ctx.Err() != nil {
 				wg.Done()
 				return
@@ -534,7 +528,7 @@ func TestCoordinatorStress(t *testing.T) {
 				coord.SendMsg(ctx, MsgSyncBlock{
 					Stats:   *stats,
 					Batches: blockData.Rollup.Batches,
-					Vars: common.SCVariablesPtr{
+					Vars: synchronizer.SCVariablesPtr{
 						Rollup:   blockData.Rollup.Vars,
 						Auction:  blockData.Auction.Vars,
 						WDelayer: blockData.WDelayer.Vars,
--- a/coordinator/pipeline.go
+++ b/coordinator/pipeline.go
@@ -22,7 +22,7 @@ import (

 type statsVars struct {
 	Stats synchronizer.Stats
-	Vars  common.SCVariablesPtr
+	Vars  synchronizer.SCVariablesPtr
 }

 type state struct {
@@ -36,7 +36,7 @@ type state struct {
 type Pipeline struct {
 	num    int
 	cfg    Config
-	consts common.SCConsts
+	consts synchronizer.SCConsts

 	// state
 	state         state
@@ -57,7 +57,7 @@ type Pipeline struct {
 	purger                *Purger

 	stats       synchronizer.Stats
-	vars        common.SCVariables
+	vars        synchronizer.SCVariables
 	statsVarsCh chan statsVars

 	ctx    context.Context
@@ -90,7 +90,7 @@ func NewPipeline(ctx context.Context,
 	coord *Coordinator,
 	txManager *TxManager,
 	provers []prover.Client,
-	scConsts *common.SCConsts,
+	scConsts *synchronizer.SCConsts,
 ) (*Pipeline, error) {
 	proversPool := NewProversPool(len(provers))
 	proversPoolSize := 0
@@ -124,8 +124,7 @@ func NewPipeline(ctx context.Context,
 }

 // SetSyncStatsVars is a thread safe method to sets the synchronizer Stats
-func (p *Pipeline) SetSyncStatsVars(ctx context.Context, stats *synchronizer.Stats,
-	vars *common.SCVariablesPtr) {
+func (p *Pipeline) SetSyncStatsVars(ctx context.Context, stats *synchronizer.Stats, vars *synchronizer.SCVariablesPtr) {
 	select {
 	case p.statsVarsCh <- statsVars{Stats: *stats, Vars: *vars}:
 	case <-ctx.Done():
@@ -134,7 +133,7 @@ func (p *Pipeline) SetSyncStatsVars(ctx context.Context, stats *synchronizer.Sta

 // reset pipeline state
 func (p *Pipeline) reset(batchNum common.BatchNum,
-	stats *synchronizer.Stats, vars *common.SCVariables) error {
+	stats *synchronizer.Stats, vars *synchronizer.SCVariables) error {
 	p.state = state{
 		batchNum:                     batchNum,
 		lastForgeL1TxsNum:            stats.Sync.LastForgeL1TxsNum,
@@ -195,38 +194,16 @@ func (p *Pipeline) reset(batchNum common.BatchNum,
 	return nil
 }

-func (p *Pipeline) syncSCVars(vars common.SCVariablesPtr) {
+func (p *Pipeline) syncSCVars(vars synchronizer.SCVariablesPtr) {
 	updateSCVars(&p.vars, vars)
 }

-// handleForgeBatch waits for an available proof server, calls p.forgeBatch to
-// forge the batch and get the zkInputs, and then  sends the zkInputs to the
-// selected proof server so that the proof computation begins.
-func (p *Pipeline) handleForgeBatch(ctx context.Context,
-	batchNum common.BatchNum) (batchInfo *BatchInfo, err error) {
-	// 1. Wait for an available serverProof (blocking call)
-	serverProof, err := p.proversPool.Get(ctx)
-	if ctx.Err() != nil {
-		return nil, ctx.Err()
-	} else if err != nil {
-		log.Errorw("proversPool.Get", "err", err)
-		return nil, tracerr.Wrap(err)
-	}
-	defer func() {
-		// If we encounter any error (notice that this function returns
-		// errors to notify that a batch is not forged not only because
-		// of unexpected errors but also due to benign causes), add the
-		// serverProof back to the pool
-		if err != nil {
-			p.proversPool.Add(ctx, serverProof)
-		}
-	}()
-
-	// 2. Forge the batch internally (make a selection of txs and prepare
-	// all the smart contract arguments)
-	var skipReason *string
+// handleForgeBatch calls p.forgeBatch to forge the batch and get the zkInputs,
+// and then waits for an available proof server and sends the zkInputs to it so
+// that the proof computation begins.
+func (p *Pipeline) handleForgeBatch(ctx context.Context, batchNum common.BatchNum) (*BatchInfo, error) {
 	p.mutexL2DBUpdateDelete.Lock()
-	batchInfo, skipReason, err = p.forgeBatch(batchNum)
+	batchInfo, err := p.forgeBatch(batchNum)
 	p.mutexL2DBUpdateDelete.Unlock()
 	if ctx.Err() != nil {
 		return nil, ctx.Err()
@@ -235,29 +212,37 @@ func (p *Pipeline) handleForgeBatch(ctx context.Context,
 			log.Warnw("forgeBatch: scheduled L1Batch too early", "err", err,
 				"lastForgeL1TxsNum", p.state.lastForgeL1TxsNum,
 				"syncLastForgeL1TxsNum", p.stats.Sync.LastForgeL1TxsNum)
+		} else if tracerr.Unwrap(err) == errForgeNoTxsBeforeDelay ||
+			tracerr.Unwrap(err) == errForgeBeforeDelay {
+			// no log
 		} else {
 			log.Errorw("forgeBatch", "err", err)
 		}
-		return nil, tracerr.Wrap(err)
-	} else if skipReason != nil {
-		log.Debugw("skipping batch", "batch", batchNum, "reason", *skipReason)
-		return nil, tracerr.Wrap(errSkipBatchByPolicy)
+		return nil, err
+	}
+	// 6. Wait for an available server proof (blocking call)
+	serverProof, err := p.proversPool.Get(ctx)
+	if ctx.Err() != nil {
+		return nil, ctx.Err()
+	} else if err != nil {
+		log.Errorw("proversPool.Get", "err", err)
+		return nil, err
 	}
-
-	// 3. Send the ZKInputs to the proof server
 	batchInfo.ServerProof = serverProof
 	if err := p.sendServerProof(ctx, batchInfo); ctx.Err() != nil {
 		return nil, ctx.Err()
 	} else if err != nil {
 		log.Errorw("sendServerProof", "err", err)
-		return nil, tracerr.Wrap(err)
+		batchInfo.ServerProof = nil
+		p.proversPool.Add(ctx, serverProof)
+		return nil, err
 	}
 	return batchInfo, nil
 }

 // Start the forging pipeline
 func (p *Pipeline) Start(batchNum common.BatchNum,
-	stats *synchronizer.Stats, vars *common.SCVariables) error {
+	stats *synchronizer.Stats, vars *synchronizer.SCVariables) error {
 	if p.started {
 		log.Fatal("Pipeline already started")
 	}
@@ -273,7 +258,7 @@ func (p *Pipeline) Start(batchNum common.BatchNum,

 	p.wg.Add(1)
 	go func() {
-		timer := time.NewTimer(zeroDuration)
+		waitCh := time.After(zeroDuration)
 		for {
 			select {
 			case <-p.ctx.Done():
@@ -283,20 +268,23 @@ func (p *Pipeline) Start(batchNum common.BatchNum,
 			case statsVars := <-p.statsVarsCh:
 				p.stats = statsVars.Stats
 				p.syncSCVars(statsVars.Vars)
-			case <-timer.C:
-				timer.Reset(p.cfg.ForgeRetryInterval)
+			case <-waitCh:
 				// Once errAtBatchNum != 0, we stop forging
 				// batches because there's been an error and we
 				// wait for the pipeline to be stopped.
 				if p.getErrAtBatchNum() != 0 {
+					waitCh = time.After(p.cfg.ForgeRetryInterval)
 					continue
 				}
 				batchNum = p.state.batchNum + 1
 				batchInfo, err := p.handleForgeBatch(p.ctx, batchNum)
 				if p.ctx.Err() != nil {
+					waitCh = time.After(p.cfg.ForgeRetryInterval)
 					continue
 				} else if tracerr.Unwrap(err) == errLastL1BatchNotSynced ||
-					tracerr.Unwrap(err) == errSkipBatchByPolicy {
+					tracerr.Unwrap(err) == errForgeNoTxsBeforeDelay ||
+					tracerr.Unwrap(err) == errForgeBeforeDelay {
+					waitCh = time.After(p.cfg.ForgeRetryInterval)
 					continue
 				} else if err != nil {
 					p.setErrAtBatchNum(batchNum)
@@ -305,6 +293,7 @@ func (p *Pipeline) Start(batchNum common.BatchNum,
 							"Pipeline.handleForgBatch: %v", err),
 						FailedBatchNum: batchNum,
 					})
+					waitCh = time.After(p.cfg.ForgeRetryInterval)
 					continue
 				}
 				p.lastForgeTime = time.Now()
@@ -314,10 +303,7 @@ func (p *Pipeline) Start(batchNum common.BatchNum,
 				case batchChSentServerProof <- batchInfo:
 				case <-p.ctx.Done():
 				}
-				if !timer.Stop() {
-					<-timer.C
-				}
-				timer.Reset(zeroDuration)
+				waitCh = time.After(zeroDuration)
 			}
 		}
 	}()
@@ -352,6 +338,7 @@ func (p *Pipeline) Start(batchNum common.BatchNum,
 				}
 				// We are done with this serverProof, add it back to the pool
 				p.proversPool.Add(p.ctx, batchInfo.ServerProof)
+				// batchInfo.ServerProof = nil
 				p.txManager.AddBatch(p.ctx, batchInfo)
 			}
 		}
@@ -389,109 +376,17 @@ func (p *Pipeline) sendServerProof(ctx context.Context, batchInfo *BatchInfo) er
 	return nil
 }

-// slotCommitted returns true if the current slot has already been committed
-func (p *Pipeline) slotCommitted() bool {
-	// Synchronizer has synchronized a batch in the current slot (setting
-	// CurrentSlot.ForgerCommitment) or the pipeline has already
-	// internally-forged a batch in the current slot
-	return p.stats.Sync.Auction.CurrentSlot.ForgerCommitment ||
-		p.stats.Sync.Auction.CurrentSlot.SlotNum == p.state.lastSlotForged
-}
-
-// forgePolicySkipPreSelection is called before doing a tx selection in a batch to
-// determine by policy if we should forge the batch or not.  Returns true and
-// the reason when the forging of the batch must be skipped.
-func (p *Pipeline) forgePolicySkipPreSelection(now time.Time) (bool, string) {
-	// Check if the slot is not yet fulfilled
-	slotCommitted := p.slotCommitted()
-	if p.cfg.ForgeOncePerSlotIfTxs {
-		if slotCommitted {
-			return true, "cfg.ForgeOncePerSlotIfTxs = true and slot already committed"
-		}
-		return false, ""
-	}
-	// Determine if we must commit the slot
-	if !p.cfg.IgnoreSlotCommitment && !slotCommitted {
-		return false, ""
-	}
-
-	// If we haven't reached the ForgeDelay, skip forging the batch
-	if now.Sub(p.lastForgeTime) < p.cfg.ForgeDelay {
-		return true, "we haven't reached the forge delay"
-	}
-	return false, ""
-}
-
-// forgePolicySkipPostSelection is called after doing a tx selection in a batch to
-// determine by policy if we should forge the batch or not.  Returns true and
-// the reason when the forging of the batch must be skipped.
-func (p *Pipeline) forgePolicySkipPostSelection(now time.Time, l1UserTxsExtra, l1CoordTxs []common.L1Tx,
-	poolL2Txs []common.PoolL2Tx, batchInfo *BatchInfo) (bool, string, error) {
-	// Check if the slot is not yet fulfilled
-	slotCommitted := p.slotCommitted()
-
-	pendingTxs := true
-	if len(l1UserTxsExtra) == 0 && len(l1CoordTxs) == 0 && len(poolL2Txs) == 0 {
-		if batchInfo.L1Batch {
-			// Query the number of unforged L1UserTxs
-			// (either in a open queue or in a frozen
-			// not-yet-forged queue).
-			count, err := p.historyDB.GetUnforgedL1UserTxsCount()
-			if err != nil {
-				return false, "", err
-			}
-			// If there are future L1UserTxs, we forge a
-			// batch to advance the queues to be able to
-			// forge the L1UserTxs in the future.
-			// Otherwise, skip.
-			if count == 0 {
-				pendingTxs = false
-			}
-		} else {
-			pendingTxs = false
-		}
-	}
-
-	if p.cfg.ForgeOncePerSlotIfTxs {
-		if slotCommitted {
-			return true, "cfg.ForgeOncePerSlotIfTxs = true and slot already committed",
-				nil
-		}
-		if pendingTxs {
-			return false, "", nil
-		}
-		return true, "cfg.ForgeOncePerSlotIfTxs = true and no pending txs",
-			nil
-	}
-
-	// Determine if we must commit the slot
-	if !p.cfg.IgnoreSlotCommitment && !slotCommitted {
-		return false, "", nil
-	}
-
-	// check if there is no txs to forge, no l1UserTxs in the open queue to
-	// freeze and we haven't reached the ForgeNoTxsDelay
-	if now.Sub(p.lastForgeTime) < p.cfg.ForgeNoTxsDelay {
-		if !pendingTxs {
-			return true, "no txs to forge and we haven't reached the forge no txs delay",
-				nil
-		}
-	}
-	return false, "", nil
-}
-
 // forgeBatch forges the batchNum batch.
-func (p *Pipeline) forgeBatch(batchNum common.BatchNum) (batchInfo *BatchInfo,
-	skipReason *string, err error) {
+func (p *Pipeline) forgeBatch(batchNum common.BatchNum) (batchInfo *BatchInfo, err error) {
 	// remove transactions from the pool that have been there for too long
 	_, err = p.purger.InvalidateMaybe(p.l2DB, p.txSelector.LocalAccountsDB(),
 		p.stats.Sync.LastBlock.Num, int64(batchNum))
 	if err != nil {
-		return nil, nil, tracerr.Wrap(err)
+		return nil, tracerr.Wrap(err)
 	}
 	_, err = p.purger.PurgeMaybe(p.l2DB, p.stats.Sync.LastBlock.Num, int64(batchNum))
 	if err != nil {
-		return nil, nil, tracerr.Wrap(err)
+		return nil, tracerr.Wrap(err)
 	}
 	// Structure to accumulate data and metadata of the batch
 	now := time.Now()
@@ -499,50 +394,85 @@ func (p *Pipeline) forgeBatch(batchNum common.BatchNum) (batchInfo *BatchInfo,
 	batchInfo.Debug.StartTimestamp = now
 	batchInfo.Debug.StartBlockNum = p.stats.Eth.LastBlock.Num + 1

+	selectionCfg := &txselector.SelectionConfig{
+		MaxL1UserTxs:      common.RollupConstMaxL1UserTx,
+		TxProcessorConfig: p.cfg.TxProcessorConfig,
+	}
+
 	var poolL2Txs []common.PoolL2Tx
 	var discardedL2Txs []common.PoolL2Tx
-	var l1UserTxs, l1CoordTxs []common.L1Tx
+	var l1UserTxsExtra, l1CoordTxs []common.L1Tx
 	var auths [][]byte
 	var coordIdxs []common.Idx

-	if skip, reason := p.forgePolicySkipPreSelection(now); skip {
-		return nil, &reason, nil
+	// Check if the slot is not yet fulfilled
+	slotCommitted := false
+	if p.stats.Sync.Auction.CurrentSlot.ForgerCommitment ||
+		p.stats.Sync.Auction.CurrentSlot.SlotNum == p.state.lastSlotForged {
+		slotCommitted = true
+	}
+
+	// If we haven't reached the ForgeDelay, skip forging the batch
+	if slotCommitted && now.Sub(p.lastForgeTime) < p.cfg.ForgeDelay {
+		return nil, errForgeBeforeDelay
 	}

 	// 1. Decide if we forge L2Tx or L1+L2Tx
 	if p.shouldL1L2Batch(batchInfo) {
 		batchInfo.L1Batch = true
 		if p.state.lastForgeL1TxsNum != p.stats.Sync.LastForgeL1TxsNum {
-			return nil, nil, tracerr.Wrap(errLastL1BatchNotSynced)
+			return nil, tracerr.Wrap(errLastL1BatchNotSynced)
 		}
 		// 2a: L1+L2 txs
-		_l1UserTxs, err := p.historyDB.GetUnforgedL1UserTxs(p.state.lastForgeL1TxsNum + 1)
+		l1UserTxs, err := p.historyDB.GetUnforgedL1UserTxs(p.state.lastForgeL1TxsNum + 1)
 		if err != nil {
-			return nil, nil, tracerr.Wrap(err)
+			return nil, tracerr.Wrap(err)
 		}
-		coordIdxs, auths, l1UserTxs, l1CoordTxs, poolL2Txs, discardedL2Txs, err =
-			p.txSelector.GetL1L2TxSelection(p.cfg.TxProcessorConfig, _l1UserTxs)
+		coordIdxs, auths, l1UserTxsExtra, l1CoordTxs, poolL2Txs, discardedL2Txs, err =
+			p.txSelector.GetL1L2TxSelection(selectionCfg, l1UserTxs)
 		if err != nil {
-			return nil, nil, tracerr.Wrap(err)
+			return nil, tracerr.Wrap(err)
 		}
 	} else {
 		// 2b: only L2 txs
 		coordIdxs, auths, l1CoordTxs, poolL2Txs, discardedL2Txs, err =
-			p.txSelector.GetL2TxSelection(p.cfg.TxProcessorConfig)
+			p.txSelector.GetL2TxSelection(selectionCfg)
 		if err != nil {
-			return nil, nil, tracerr.Wrap(err)
+			return nil, tracerr.Wrap(err)
 		}
-		l1UserTxs = nil
+		l1UserTxsExtra = nil
 	}

-	if skip, reason, err := p.forgePolicySkipPostSelection(now,
-		l1UserTxs, l1CoordTxs, poolL2Txs, batchInfo); err != nil {
-		return nil, nil, tracerr.Wrap(err)
-	} else if skip {
-		if err := p.txSelector.Reset(batchInfo.BatchNum-1, false); err != nil {
-			return nil, nil, tracerr.Wrap(err)
+	// If there are no txs to forge, no l1UserTxs in the open queue to
+	// freeze, and we haven't reached the ForgeNoTxsDelay, skip forging the
+	// batch.
+	if slotCommitted && now.Sub(p.lastForgeTime) < p.cfg.ForgeNoTxsDelay {
+		noTxs := false
+		if len(l1UserTxsExtra) == 0 && len(l1CoordTxs) == 0 && len(poolL2Txs) == 0 {
+			if batchInfo.L1Batch {
+				// Query the L1UserTxs in the queue following
+				// the one we are trying to forge.
+				nextL1UserTxs, err := p.historyDB.GetUnforgedL1UserTxs(
+					p.state.lastForgeL1TxsNum + 1)
+				if err != nil {
+					return nil, tracerr.Wrap(err)
+				}
+				// If there are future L1UserTxs, we forge a
+				// batch to advance the queues and forge the
+				// L1UserTxs in the future.  Otherwise, skip.
+				if len(nextL1UserTxs) == 0 {
+					noTxs = true
+				}
+			} else {
+				noTxs = true
+			}
+		}
+		if noTxs {
+			if err := p.txSelector.Reset(batchInfo.BatchNum-1, false); err != nil {
+				return nil, tracerr.Wrap(err)
+			}
+			return nil, errForgeNoTxsBeforeDelay
 		}
-		return nil, &reason, tracerr.Wrap(err)
 	}

 	if batchInfo.L1Batch {
@@ -551,41 +481,40 @@ func (p *Pipeline) forgeBatch(batchNum common.BatchNum) (batchInfo *BatchInfo,
 	}

 	// 3.  Save metadata from TxSelector output for BatchNum
-	batchInfo.L1UserTxs = l1UserTxs
+	batchInfo.L1UserTxsExtra = l1UserTxsExtra
 	batchInfo.L1CoordTxs = l1CoordTxs
 	batchInfo.L1CoordinatorTxsAuths = auths
 	batchInfo.CoordIdxs = coordIdxs
 	batchInfo.VerifierIdx = p.cfg.VerifierIdx

-	if err := p.l2DB.StartForging(common.TxIDsFromPoolL2Txs(poolL2Txs),
-		batchInfo.BatchNum); err != nil {
-		return nil, nil, tracerr.Wrap(err)
+	if err := p.l2DB.StartForging(common.TxIDsFromPoolL2Txs(poolL2Txs), batchInfo.BatchNum); err != nil {
+		return nil, tracerr.Wrap(err)
 	}
 	if err := p.l2DB.UpdateTxsInfo(discardedL2Txs); err != nil {
-		return nil, nil, tracerr.Wrap(err)
+		return nil, tracerr.Wrap(err)
 	}

-	// Invalidate transactions that become invalid because of
+	// Invalidate transactions that become invalid beause of
 	// the poolL2Txs selected.  Will mark as invalid the txs that have a
 	// (fromIdx, nonce) which already appears in the selected txs (includes
 	// all the nonces smaller than the current one)
 	err = p.l2DB.InvalidateOldNonces(idxsNonceFromPoolL2Txs(poolL2Txs), batchInfo.BatchNum)
 	if err != nil {
-		return nil, nil, tracerr.Wrap(err)
+		return nil, tracerr.Wrap(err)
 	}

 	// 4. Call BatchBuilder with TxSelector output
 	configBatch := &batchbuilder.ConfigBatch{
 		TxProcessorConfig: p.cfg.TxProcessorConfig,
 	}
-	zkInputs, err := p.batchBuilder.BuildBatch(coordIdxs, configBatch, l1UserTxs,
+	zkInputs, err := p.batchBuilder.BuildBatch(coordIdxs, configBatch, l1UserTxsExtra,
 		l1CoordTxs, poolL2Txs)
 	if err != nil {
-		return nil, nil, tracerr.Wrap(err)
+		return nil, tracerr.Wrap(err)
 	}
 	l2Txs, err := common.PoolL2TxsToL2Txs(poolL2Txs) // NOTE: This is a big uggly, find a better way
 	if err != nil {
-		return nil, nil, tracerr.Wrap(err)
+		return nil, tracerr.Wrap(err)
 	}
 	batchInfo.L2Txs = l2Txs

@@ -597,13 +526,12 @@ func (p *Pipeline) forgeBatch(batchNum common.BatchNum) (batchInfo *BatchInfo,

 	p.state.lastSlotForged = p.stats.Sync.Auction.CurrentSlot.SlotNum

-	return batchInfo, nil, nil
+	return batchInfo, nil
 }

 // waitServerProof gets the generated zkProof & sends it to the SmartContract
 func (p *Pipeline) waitServerProof(ctx context.Context, batchInfo *BatchInfo) error {
-	proof, pubInputs, err := batchInfo.ServerProof.GetProof(ctx) // blocking call,
-	// until not resolved don't continue. Returns when the proof server has calculated the proof
+	proof, pubInputs, err := batchInfo.ServerProof.GetProof(ctx) // blocking call, until not resolved don't continue. Returns when the proof server has calculated the proof
 	if err != nil {
 		return tracerr.Wrap(err)
 	}
@@ -642,7 +570,7 @@ func prepareForgeBatchArgs(batchInfo *BatchInfo) *eth.RollupForgeBatchArgs {
 		NewLastIdx:            int64(zki.Metadata.NewLastIdxRaw),
 		NewStRoot:             zki.Metadata.NewStateRootRaw.BigInt(),
 		NewExitRoot:           zki.Metadata.NewExitRootRaw.BigInt(),
-		L1UserTxs:             batchInfo.L1UserTxs,
+		L1UserTxs:             batchInfo.L1UserTxsExtra,
 		L1CoordinatorTxs:      batchInfo.L1CoordTxs,
 		L1CoordinatorTxsAuths: batchInfo.L1CoordinatorTxsAuths,
 		L2TxsData:             batchInfo.L2Txs,
--- a/coordinator/pipeline_test.go
+++ b/coordinator/pipeline_test.go
@@ -140,7 +140,7 @@ func preloadSync(t *testing.T, ethClient *test.Client, sync *synchronizer.Synchr
 	blocks[0].Rollup.Batches[0].Batch.StateRoot =
 		newBigInt("0")
 	blocks[0].Rollup.Batches[1].Batch.StateRoot =
-		newBigInt("6860514559199319426609623120853503165917774887908204288119245630904770452486")
+		newBigInt("10941365282189107056349764238909072001483688090878331371699519307087372995595")

 	ethAddTokens(blocks, ethClient)
 	err = ethClient.CtlAddBlocks(blocks)
@@ -148,7 +148,7 @@ func preloadSync(t *testing.T, ethClient *test.Client, sync *synchronizer.Synchr

 	ctx := context.Background()
 	for {
-		syncBlock, discards, err := sync.Sync(ctx, nil)
+		syncBlock, discards, err := sync.Sync2(ctx, nil)
 		require.NoError(t, err)
 		require.Nil(t, discards)
 		if syncBlock == nil {
@@ -206,7 +206,11 @@ PoolTransfer(0) User2-User3: 300 (126)
 		require.NoError(t, err)
 	}

-	err = pipeline.reset(batchNum, syncStats, syncSCVars)
+	err = pipeline.reset(batchNum, syncStats, &synchronizer.SCVariables{
+		Rollup:   *syncSCVars.Rollup,
+		Auction:  *syncSCVars.Auction,
+		WDelayer: *syncSCVars.WDelayer,
+	})
 	require.NoError(t, err)
 	// Sanity check
 	sdbAccounts, err := pipeline.txSelector.LocalAccountsDB().TestGetAccounts()
@@ -224,12 +228,12 @@ PoolTransfer(0) User2-User3: 300 (126)

 	batchNum++

-	batchInfo, _, err := pipeline.forgeBatch(batchNum)
+	batchInfo, err := pipeline.forgeBatch(batchNum)
 	require.NoError(t, err)
 	assert.Equal(t, 3, len(batchInfo.L2Txs))

 	batchNum++
-	batchInfo, _, err = pipeline.forgeBatch(batchNum)
+	batchInfo, err = pipeline.forgeBatch(batchNum)
 	require.NoError(t, err)
 	assert.Equal(t, 0, len(batchInfo.L2Txs))
 }
--- a/coordinator/purger.go
+++ b/coordinator/purger.go
@@ -14,7 +14,7 @@ import (
 // PurgerCfg is the purger configuration
 type PurgerCfg struct {
 	// PurgeBatchDelay is the delay between batches to purge outdated
-	// transactions. Outdated L2Txs are those that have been forged or
+	// transactions.  Oudated L2Txs are those that have been forged or
 	// marked as invalid for longer than the SafetyPeriod and pending L2Txs
 	// that have been in the pool for longer than TTL once there are
 	// MaxTxs.
@@ -23,7 +23,7 @@ type PurgerCfg struct {
 	// transactions due to nonce lower than the account nonce.
 	InvalidateBatchDelay int64
 	// PurgeBlockDelay is the delay between blocks to purge outdated
-	// transactions. Outdated L2Txs are those that have been forged or
+	// transactions.  Oudated L2Txs are those that have been forged or
 	// marked as invalid for longer than the SafetyPeriod and pending L2Txs
 	// that have been in the pool for longer than TTL once there are
 	// MaxTxs.
--- a/coordinator/purger_test.go
+++ b/coordinator/purger_test.go
@@ -21,7 +21,7 @@ func newL2DB(t *testing.T) *l2db.L2DB {
 	db, err := dbUtils.InitSQLDB(5432, "localhost", "hermez", pass, "hermez")
 	require.NoError(t, err)
 	test.WipeDB(db)
-	return l2db.NewL2DB(db, db, 10, 100, 0.0, 24*time.Hour, nil)
+	return l2db.NewL2DB(db, 10, 100, 0.0, 24*time.Hour, nil)
 }

 func newStateDB(t *testing.T) *statedb.LocalStateDB {
--- a/coordinator/txmanager.go
+++ b/coordinator/txmanager.go
@@ -31,10 +31,10 @@ type TxManager struct {
 	batchCh   chan *BatchInfo
 	chainID   *big.Int
 	account   accounts.Account
-	consts    common.SCConsts
+	consts    synchronizer.SCConsts

 	stats       synchronizer.Stats
-	vars        common.SCVariables
+	vars        synchronizer.SCVariables
 	statsVarsCh chan statsVars

 	discardPipelineCh chan int // int refers to the pipelineNum
@@ -55,8 +55,7 @@ type TxManager struct {

 // NewTxManager creates a new TxManager
 func NewTxManager(ctx context.Context, cfg *Config, ethClient eth.ClientInterface, l2DB *l2db.L2DB,
-	coord *Coordinator, scConsts *common.SCConsts, initSCVars *common.SCVariables) (
-	*TxManager, error) {
+	coord *Coordinator, scConsts *synchronizer.SCConsts, initSCVars *synchronizer.SCVariables) (*TxManager, error) {
 	chainID, err := ethClient.EthChainID()
 	if err != nil {
 		return nil, tracerr.Wrap(err)
@@ -67,7 +66,7 @@ func NewTxManager(ctx context.Context, cfg *Config, ethClient eth.ClientInterfac
 	}
 	accNonce, err := ethClient.EthNonceAt(ctx, *address, nil)
 	if err != nil {
-		return nil, tracerr.Wrap(err)
+		return nil, err
 	}
 	log.Infow("TxManager started", "nonce", accNonce)
 	return &TxManager{
@@ -103,8 +102,7 @@ func (t *TxManager) AddBatch(ctx context.Context, batchInfo *BatchInfo) {
 }

 // SetSyncStatsVars is a thread safe method to sets the synchronizer Stats
-func (t *TxManager) SetSyncStatsVars(ctx context.Context, stats *synchronizer.Stats,
-	vars *common.SCVariablesPtr) {
+func (t *TxManager) SetSyncStatsVars(ctx context.Context, stats *synchronizer.Stats, vars *synchronizer.SCVariablesPtr) {
 	select {
 	case t.statsVarsCh <- statsVars{Stats: *stats, Vars: *vars}:
 	case <-ctx.Done():
@@ -120,12 +118,12 @@ func (t *TxManager) DiscardPipeline(ctx context.Context, pipelineNum int) {
 	}
 }

-func (t *TxManager) syncSCVars(vars common.SCVariablesPtr) {
+func (t *TxManager) syncSCVars(vars synchronizer.SCVariablesPtr) {
 	updateSCVars(&t.vars, vars)
 }

 // NewAuth generates a new auth object for an ethereum transaction
-func (t *TxManager) NewAuth(ctx context.Context, batchInfo *BatchInfo) (*bind.TransactOpts, error) {
+func (t *TxManager) NewAuth(ctx context.Context) (*bind.TransactOpts, error) {
 	gasPrice, err := t.ethClient.EthSuggestGasPrice(ctx)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
@@ -145,12 +143,15 @@ func (t *TxManager) NewAuth(ctx context.Context, batchInfo *BatchInfo) (*bind.Tr
 		return nil, tracerr.Wrap(err)
 	}
 	auth.Value = big.NewInt(0) // in wei
-
-	gasLimit := t.cfg.ForgeBatchGasCost.Fixed +
-		uint64(len(batchInfo.L1UserTxs))*t.cfg.ForgeBatchGasCost.L1UserTx +
-		uint64(len(batchInfo.L1CoordTxs))*t.cfg.ForgeBatchGasCost.L1CoordTx +
-		uint64(len(batchInfo.L2Txs))*t.cfg.ForgeBatchGasCost.L2Tx
-	auth.GasLimit = gasLimit
+	// TODO: Calculate GasLimit based on the contents of the ForgeBatchArgs
+	// This requires a function that estimates the gas usage of the
+	// forgeBatch call based on the contents of the ForgeBatch args:
+	// - length of l2txs
+	// - length of l1Usertxs
+	// - length of l1CoordTxs with authorization signature
+	// - length of l1CoordTxs without authoriation signature
+	// - etc.
+	auth.GasLimit = 1000000
 	auth.GasPrice = gasPrice
 	auth.Nonce = nil

@@ -184,30 +185,19 @@ func addPerc(v *big.Int, p int64) *big.Int {
 	r.Mul(r, big.NewInt(p))
 	// nolint reason: to calculate percentages we divide by 100
 	r.Div(r, big.NewInt(100)) //nolit:gomnd
-	// If the increase is 0, force it to be 1 so that a gas increase
-	// doesn't result in the same value, making the transaction to be equal
-	// than before.
-	if r.Cmp(big.NewInt(0)) == 0 {
-		r = big.NewInt(1)
-	}
 	return r.Add(v, r)
 }

-func (t *TxManager) sendRollupForgeBatch(ctx context.Context, batchInfo *BatchInfo,
-	resend bool) error {
+func (t *TxManager) sendRollupForgeBatch(ctx context.Context, batchInfo *BatchInfo, resend bool) error {
 	var ethTx *types.Transaction
 	var err error
-	var auth *bind.TransactOpts
+	auth, err := t.NewAuth(ctx)
+	if err != nil {
+		return tracerr.Wrap(err)
+	}
+	auth.Nonce = big.NewInt(int64(t.accNextNonce))
 	if resend {
-		auth = batchInfo.Auth
-		auth.GasPrice = addPerc(auth.GasPrice, 10)
-	} else {
-		auth, err = t.NewAuth(ctx, batchInfo)
-		if err != nil {
-			return tracerr.Wrap(err)
-		}
-		batchInfo.Auth = auth
-		auth.Nonce = big.NewInt(int64(t.accNextNonce))
+		auth.Nonce = big.NewInt(int64(batchInfo.EthTx.Nonce()))
 	}
 	for attempt := 0; attempt < t.cfg.EthClientAttempts; attempt++ {
 		if auth.GasPrice.Cmp(t.cfg.MaxGasPrice) > 0 {
@@ -278,8 +268,7 @@ func (t *TxManager) sendRollupForgeBatch(ctx context.Context, batchInfo *BatchIn
 			t.lastSentL1BatchBlockNum = t.stats.Eth.LastBlock.Num + 1
 		}
 	}
-	if err := t.l2DB.DoneForging(common.TxIDsFromL2Txs(batchInfo.L2Txs),
-		batchInfo.BatchNum); err != nil {
+	if err := t.l2DB.DoneForging(common.TxIDsFromL2Txs(batchInfo.L2Txs), batchInfo.BatchNum); err != nil {
 		return tracerr.Wrap(err)
 	}
 	return nil
@@ -311,9 +300,7 @@ func (t *TxManager) checkEthTransactionReceipt(ctx context.Context, batchInfo *B
 		}
 	}
 	if err != nil {
-		return tracerr.Wrap(
-			fmt.Errorf("reached max attempts for ethClient.EthTransactionReceipt: %w",
-				err))
+		return tracerr.Wrap(fmt.Errorf("reached max attempts for ethClient.EthTransactionReceipt: %w", err))
 	}
 	batchInfo.Receipt = receipt
 	t.cfg.debugBatchStore(batchInfo)
@@ -432,6 +419,8 @@ func (q *Queue) Push(batchInfo *BatchInfo) {

 // Run the TxManager
 func (t *TxManager) Run(ctx context.Context) {
+	waitCh := time.After(longWaitDuration)
+
 	var statsVars statsVars
 	select {
 	case statsVars = <-t.statsVarsCh:
@@ -442,7 +431,6 @@ func (t *TxManager) Run(ctx context.Context) {
 	log.Infow("TxManager: received initial statsVars",
 		"block", t.stats.Eth.LastBlock.Num, "batch", t.stats.Eth.LastBatchNum)

-	timer := time.NewTimer(longWaitDuration)
 	for {
 		select {
 		case <-ctx.Done():
@@ -486,24 +474,20 @@ func (t *TxManager) Run(ctx context.Context) {
 				continue
 			}
 			t.queue.Push(batchInfo)
-			if !timer.Stop() {
-				<-timer.C
-			}
-			timer.Reset(t.cfg.TxManagerCheckInterval)
-		case <-timer.C:
+			waitCh = time.After(t.cfg.TxManagerCheckInterval)
+		case <-waitCh:
 			queuePosition, batchInfo := t.queue.Next()
 			if batchInfo == nil {
-				timer.Reset(longWaitDuration)
+				waitCh = time.After(longWaitDuration)
 				continue
 			}
-			timer.Reset(t.cfg.TxManagerCheckInterval)
 			if err := t.checkEthTransactionReceipt(ctx, batchInfo); ctx.Err() != nil {
 				continue
 			} else if err != nil { //nolint:staticcheck
 				// Our ethNode is giving an error different
 				// than "not found" when getting the receipt
 				// for the transaction, so we can't figure out
-				// if it was not mined, mined and successful or
+				// if it was not mined, mined and succesfull or
 				// mined and failed.  This could be due to the
 				// ethNode failure.
 				t.coord.SendMsg(ctx, MsgStopPipeline{
@@ -568,7 +552,7 @@ func (t *TxManager) removeBadBatchInfos(ctx context.Context) error {
 			// Our ethNode is giving an error different
 			// than "not found" when getting the receipt
 			// for the transaction, so we can't figure out
-			// if it was not mined, mined and successful or
+			// if it was not mined, mined and succesfull or
 			// mined and failed.  This could be due to the
 			// ethNode failure.
 			next++
@@ -608,7 +592,7 @@ func (t *TxManager) removeBadBatchInfos(ctx context.Context) error {
 func (t *TxManager) canForgeAt(blockNum int64) bool {
 	return canForge(&t.consts.Auction, &t.vars.Auction,
 		&t.stats.Sync.Auction.CurrentSlot, &t.stats.Sync.Auction.NextSlot,
-		t.cfg.ForgerAddress, blockNum, t.cfg.MustForgeAtSlotDeadline)
+		t.cfg.ForgerAddress, blockNum)
 }

 func (t *TxManager) mustL1L2Batch(blockNum int64) bool {
--- a/db/historydb/apiqueries.go
+++ b/db/historydb/apiqueries.go
@@ -1,14 +1,10 @@
 package historydb

 import (
-	"database/sql"
 	"errors"
 	"fmt"
-	"math/big"
-	"time"

 	ethCommon "github.com/ethereum/go-ethereum/common"
-	"github.com/hermeznetwork/hermez-node/apitypes"
 	"github.com/hermeznetwork/hermez-node/common"
 	"github.com/hermeznetwork/hermez-node/db"
 	"github.com/hermeznetwork/tracerr"
@@ -36,18 +32,9 @@ func (hdb *HistoryDB) GetBatchAPI(batchNum common.BatchNum) (*BatchAPI, error) {
 		return nil, tracerr.Wrap(err)
 	}
 	defer hdb.apiConnCon.Release()
-	return hdb.getBatchAPI(hdb.dbRead, batchNum)
-}
-
-// GetBatchInternalAPI return the batch with the given batchNum
-func (hdb *HistoryDB) GetBatchInternalAPI(batchNum common.BatchNum) (*BatchAPI, error) {
-	return hdb.getBatchAPI(hdb.dbRead, batchNum)
-}
-
-func (hdb *HistoryDB) getBatchAPI(d meddler.DB, batchNum common.BatchNum) (*BatchAPI, error) {
 	batch := &BatchAPI{}
-	if err := meddler.QueryRow(
-		d, batch,
+	return batch, tracerr.Wrap(meddler.QueryRow(
+		hdb.db, batch,
 		`SELECT batch.item_id, batch.batch_num, batch.eth_block_num,
 		batch.forger_addr, batch.fees_collected, batch.total_fees_usd, batch.state_root,
 		batch.num_accounts, batch.exit_root, batch.forge_l1_txs_num, batch.slot_num,
@@ -55,11 +42,7 @@ func (hdb *HistoryDB) getBatchAPI(d meddler.DB, batchNum common.BatchNum) (*Batc
 	    COALESCE ((SELECT COUNT(*) FROM tx WHERE batch_num = batch.batch_num), 0) AS forged_txs
 	    FROM batch INNER JOIN block ON batch.eth_block_num = block.eth_block_num
 	 	WHERE batch_num = $1;`, batchNum,
-	); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	batch.CollectedFeesAPI = apitypes.NewCollectedFeesAPI(batch.CollectedFeesDB)
-	return batch, nil
+	))
 }

 // GetBatchesAPI return the batches applying the given filters
@@ -150,19 +133,16 @@ func (hdb *HistoryDB) GetBatchesAPI(
 		queryStr += " DESC "
 	}
 	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
-	query = hdb.dbRead.Rebind(queryStr)
+	query = hdb.db.Rebind(queryStr)
 	// log.Debug(query)
 	batchPtrs := []*BatchAPI{}
-	if err := meddler.QueryAll(hdb.dbRead, &batchPtrs, query, args...); err != nil {
+	if err := meddler.QueryAll(hdb.db, &batchPtrs, query, args...); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	batches := db.SlicePtrsToSlice(batchPtrs).([]BatchAPI)
 	if len(batches) == 0 {
 		return batches, 0, nil
 	}
-	for i := range batches {
-		batches[i].CollectedFeesAPI = apitypes.NewCollectedFeesAPI(batches[i].CollectedFeesDB)
-	}
 	return batches, batches[0].TotalItems - uint64(len(batches)), nil
 }

@@ -176,7 +156,7 @@ func (hdb *HistoryDB) GetBestBidAPI(slotNum *int64) (BidAPI, error) {
 	}
 	defer hdb.apiConnCon.Release()
 	err = meddler.QueryRow(
-		hdb.dbRead, bid, `SELECT bid.*, block.timestamp, coordinator.forger_addr, coordinator.url 
+		hdb.db, bid, `SELECT bid.*, block.timestamp, coordinator.forger_addr, coordinator.url 
 		FROM bid INNER JOIN block ON bid.eth_block_num = block.eth_block_num
 		INNER JOIN (
 			SELECT bidder_addr, MAX(item_id) AS item_id FROM coordinator
@@ -200,14 +180,6 @@ func (hdb *HistoryDB) GetBestBidsAPI(
 		return nil, 0, tracerr.Wrap(err)
 	}
 	defer hdb.apiConnCon.Release()
-	return hdb.getBestBidsAPI(hdb.dbRead, minSlotNum, maxSlotNum, bidderAddr, limit, order)
-}
-func (hdb *HistoryDB) getBestBidsAPI(
-	d meddler.DB,
-	minSlotNum, maxSlotNum *int64,
-	bidderAddr *ethCommon.Address,
-	limit *uint, order string,
-) ([]BidAPI, uint64, error) {
 	var query string
 	var args []interface{}
 	// JOIN the best bid of each slot with the latest update of each coordinator
@@ -240,9 +212,9 @@ func (hdb *HistoryDB) getBestBidsAPI(
 	if limit != nil {
 		queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 	}
-	query = hdb.dbRead.Rebind(queryStr)
+	query = hdb.db.Rebind(queryStr)
 	bidPtrs := []*BidAPI{}
-	if err := meddler.QueryAll(d, &bidPtrs, query, args...); err != nil {
+	if err := meddler.QueryAll(hdb.db, &bidPtrs, query, args...); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	// log.Debug(query)
@@ -324,9 +296,9 @@ func (hdb *HistoryDB) GetBidsAPI(
 	if err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
-	query = hdb.dbRead.Rebind(query)
+	query = hdb.db.Rebind(query)
 	bids := []*BidAPI{}
-	if err := meddler.QueryAll(hdb.dbRead, &bids, query, argsQ...); err != nil {
+	if err := meddler.QueryAll(hdb.db, &bids, query, argsQ...); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	if len(bids) == 0 {
@@ -412,9 +384,9 @@ func (hdb *HistoryDB) GetTokensAPI(
 	if err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
-	query = hdb.dbRead.Rebind(query)
+	query = hdb.db.Rebind(query)
 	tokens := []*TokenWithUSD{}
-	if err := meddler.QueryAll(hdb.dbRead, &tokens, query, argsQ...); err != nil {
+	if err := meddler.QueryAll(hdb.db, &tokens, query, argsQ...); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	if len(tokens) == 0 {
@@ -436,7 +408,7 @@ func (hdb *HistoryDB) GetTxAPI(txID common.TxID) (*TxAPI, error) {
 	defer hdb.apiConnCon.Release()
 	tx := &TxAPI{}
 	err = meddler.QueryRow(
-		hdb.dbRead, tx, `SELECT tx.item_id, tx.is_l1, tx.id, tx.type, tx.position, 
+		hdb.db, tx, `SELECT tx.item_id, tx.is_l1, tx.id, tx.type, tx.position, 
 		hez_idx(tx.effective_from_idx, token.symbol) AS from_idx, tx.from_eth_addr, tx.from_bjj,
 		hez_idx(tx.to_idx, token.symbol) AS to_idx, tx.to_eth_addr, tx.to_bjj,
 		tx.amount, tx.amount_success, tx.token_id, tx.amount_usd, 
@@ -569,10 +541,10 @@ func (hdb *HistoryDB) GetTxsAPI(
 		queryStr += " DESC "
 	}
 	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
-	query = hdb.dbRead.Rebind(queryStr)
+	query = hdb.db.Rebind(queryStr)
 	// log.Debug(query)
 	txsPtrs := []*TxAPI{}
-	if err := meddler.QueryAll(hdb.dbRead, &txsPtrs, query, args...); err != nil {
+	if err := meddler.QueryAll(hdb.db, &txsPtrs, query, args...); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	txs := db.SlicePtrsToSlice(txsPtrs).([]TxAPI)
@@ -592,7 +564,7 @@ func (hdb *HistoryDB) GetExitAPI(batchNum *uint, idx *common.Idx) (*ExitAPI, err
 	defer hdb.apiConnCon.Release()
 	exit := &ExitAPI{}
 	err = meddler.QueryRow(
-		hdb.dbRead, exit, `SELECT exit_tree.item_id, exit_tree.batch_num,
+		hdb.db, exit, `SELECT exit_tree.item_id, exit_tree.batch_num,
 		hez_idx(exit_tree.account_idx, token.symbol) AS account_idx,
 		account.bjj, account.eth_addr,
 		exit_tree.merkle_proof, exit_tree.balance, exit_tree.instant_withdrawn,
@@ -713,10 +685,10 @@ func (hdb *HistoryDB) GetExitsAPI(
 		queryStr += " DESC "
 	}
 	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
-	query = hdb.dbRead.Rebind(queryStr)
+	query = hdb.db.Rebind(queryStr)
 	// log.Debug(query)
 	exits := []*ExitAPI{}
-	if err := meddler.QueryAll(hdb.dbRead, &exits, query, args...); err != nil {
+	if err := meddler.QueryAll(hdb.db, &exits, query, args...); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	if len(exits) == 0 {
@@ -725,6 +697,25 @@ func (hdb *HistoryDB) GetExitsAPI(
 	return db.SlicePtrsToSlice(exits).([]ExitAPI), exits[0].TotalItems - uint64(len(exits)), nil
 }

+// GetBucketUpdatesAPI retrieves latest values for each bucket
+func (hdb *HistoryDB) GetBucketUpdatesAPI() ([]BucketUpdateAPI, error) {
+	cancel, err := hdb.apiConnCon.Acquire()
+	defer cancel()
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	defer hdb.apiConnCon.Release()
+	var bucketUpdates []*BucketUpdateAPI
+	err = meddler.QueryAll(
+		hdb.db, &bucketUpdates,
+		`SELECT num_bucket, withdrawals FROM bucket_update 
+		WHERE item_id in(SELECT max(item_id) FROM bucket_update 
+		group by num_bucket) 
+		ORDER BY num_bucket ASC;`,
+	)
+	return db.SlicePtrsToSlice(bucketUpdates).([]BucketUpdateAPI), tracerr.Wrap(err)
+}
+
 // GetCoordinatorsAPI returns a list of coordinators from the DB and pagination info
 func (hdb *HistoryDB) GetCoordinatorsAPI(
 	bidderAddr, forgerAddr *ethCommon.Address,
@@ -781,10 +772,10 @@ func (hdb *HistoryDB) GetCoordinatorsAPI(
 		queryStr += " DESC "
 	}
 	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
-	query = hdb.dbRead.Rebind(queryStr)
+	query = hdb.db.Rebind(queryStr)

 	coordinators := []*CoordinatorAPI{}
-	if err := meddler.QueryAll(hdb.dbRead, &coordinators, query, args...); err != nil {
+	if err := meddler.QueryAll(hdb.db, &coordinators, query, args...); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	if len(coordinators) == 0 {
@@ -804,11 +795,34 @@ func (hdb *HistoryDB) GetAuctionVarsAPI() (*common.AuctionVariables, error) {
 	defer hdb.apiConnCon.Release()
 	auctionVars := &common.AuctionVariables{}
 	err = meddler.QueryRow(
-		hdb.dbRead, auctionVars, `SELECT * FROM auction_vars;`,
+		hdb.db, auctionVars, `SELECT * FROM auction_vars;`,
 	)
 	return auctionVars, tracerr.Wrap(err)
 }

+// GetAuctionVarsUntilSetSlotNumAPI returns all the updates of the auction vars
+// from the last entry in which DefaultSlotSetBidSlotNum <= slotNum
+func (hdb *HistoryDB) GetAuctionVarsUntilSetSlotNumAPI(slotNum int64, maxItems int) ([]MinBidInfo, error) {
+	cancel, err := hdb.apiConnCon.Acquire()
+	defer cancel()
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	defer hdb.apiConnCon.Release()
+	auctionVars := []*MinBidInfo{}
+	query := `
+		SELECT DISTINCT default_slot_set_bid, default_slot_set_bid_slot_num FROM auction_vars
+		WHERE default_slot_set_bid_slot_num < $1
+		ORDER BY default_slot_set_bid_slot_num DESC
+		LIMIT $2;
+	`
+	err = meddler.QueryAll(hdb.db, &auctionVars, query, slotNum, maxItems)
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	return db.SlicePtrsToSlice(auctionVars).([]MinBidInfo), nil
+}
+
 // GetAccountAPI returns an account by its index
 func (hdb *HistoryDB) GetAccountAPI(idx common.Idx) (*AccountAPI, error) {
 	cancel, err := hdb.apiConnCon.Acquire()
@@ -818,7 +832,7 @@ func (hdb *HistoryDB) GetAccountAPI(idx common.Idx) (*AccountAPI, error) {
 	}
 	defer hdb.apiConnCon.Release()
 	account := &AccountAPI{}
-	err = meddler.QueryRow(hdb.dbRead, account, `SELECT account.item_id, hez_idx(account.idx, 
+	err = meddler.QueryRow(hdb.db, account, `SELECT account.item_id, hez_idx(account.idx, 
 		token.symbol) as idx, account.batch_num, account.bjj, account.eth_addr,
 		token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
 		token.eth_addr as token_eth_addr, token.name, token.symbol, token.decimals, token.usd,
@@ -913,10 +927,10 @@ func (hdb *HistoryDB) GetAccountsAPI(
 	if err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
-	query = hdb.dbRead.Rebind(query)
+	query = hdb.db.Rebind(query)

 	accounts := []*AccountAPI{}
-	if err := meddler.QueryAll(hdb.dbRead, &accounts, query, argsQ...); err != nil {
+	if err := meddler.QueryAll(hdb.db, &accounts, query, argsQ...); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	if len(accounts) == 0 {
@@ -927,6 +941,103 @@ func (hdb *HistoryDB) GetAccountsAPI(
 		accounts[0].TotalItems - uint64(len(accounts)), nil
 }

+// GetMetricsAPI returns metrics
+func (hdb *HistoryDB) GetMetricsAPI(lastBatchNum common.BatchNum) (*Metrics, error) {
+	cancel, err := hdb.apiConnCon.Acquire()
+	defer cancel()
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	defer hdb.apiConnCon.Release()
+	metricsTotals := &MetricsTotals{}
+	metrics := &Metrics{}
+	err = meddler.QueryRow(
+		hdb.db, metricsTotals, `SELECT COUNT(tx.*) as total_txs,
+		COALESCE (MIN(tx.batch_num), 0) as batch_num, COALESCE (MIN(block.timestamp), 
+		NOW()) AS min_timestamp, COALESCE (MAX(block.timestamp), NOW()) AS max_timestamp
+		FROM tx INNER JOIN block ON tx.eth_block_num = block.eth_block_num
+		WHERE block.timestamp >= NOW() - INTERVAL '24 HOURS';`)
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+
+	seconds := metricsTotals.MaxTimestamp.Sub(metricsTotals.MinTimestamp).Seconds()
+	// Avoid dividing by 0
+	if seconds == 0 {
+		seconds++
+	}
+
+	metrics.TransactionsPerSecond = float64(metricsTotals.TotalTransactions) / seconds
+
+	if (lastBatchNum - metricsTotals.FirstBatchNum) > 0 {
+		metrics.TransactionsPerBatch = float64(metricsTotals.TotalTransactions) /
+			float64(lastBatchNum-metricsTotals.FirstBatchNum+1)
+	} else {
+		metrics.TransactionsPerBatch = float64(0)
+	}
+
+	err = meddler.QueryRow(
+		hdb.db, metricsTotals, `SELECT COUNT(*) AS total_batches, 
+		COALESCE (SUM(total_fees_usd), 0) AS total_fees FROM batch 
+		WHERE batch_num > $1;`, metricsTotals.FirstBatchNum)
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	if metricsTotals.TotalBatches > 0 {
+		metrics.BatchFrequency = seconds / float64(metricsTotals.TotalBatches)
+	} else {
+		metrics.BatchFrequency = 0
+	}
+	if metricsTotals.TotalTransactions > 0 {
+		metrics.AvgTransactionFee = metricsTotals.TotalFeesUSD / float64(metricsTotals.TotalTransactions)
+	} else {
+		metrics.AvgTransactionFee = 0
+	}
+	err = meddler.QueryRow(
+		hdb.db, metrics,
+		`SELECT COUNT(*) AS total_bjjs, COUNT(DISTINCT(bjj)) AS total_accounts FROM account;`)
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+
+	return metrics, nil
+}
+
+// GetAvgTxFeeAPI returns average transaction fee of the last 1h
+func (hdb *HistoryDB) GetAvgTxFeeAPI() (float64, error) {
+	cancel, err := hdb.apiConnCon.Acquire()
+	defer cancel()
+	if err != nil {
+		return 0, tracerr.Wrap(err)
+	}
+	defer hdb.apiConnCon.Release()
+	metricsTotals := &MetricsTotals{}
+	err = meddler.QueryRow(
+		hdb.db, metricsTotals, `SELECT COUNT(tx.*) as total_txs, 
+		COALESCE (MIN(tx.batch_num), 0) as batch_num 
+		FROM tx INNER JOIN block ON tx.eth_block_num = block.eth_block_num
+		WHERE block.timestamp >= NOW() - INTERVAL '1 HOURS';`)
+	if err != nil {
+		return 0, tracerr.Wrap(err)
+	}
+	err = meddler.QueryRow(
+		hdb.db, metricsTotals, `SELECT COUNT(*) AS total_batches, 
+		COALESCE (SUM(total_fees_usd), 0) AS total_fees FROM batch 
+		WHERE batch_num > $1;`, metricsTotals.FirstBatchNum)
+	if err != nil {
+		return 0, tracerr.Wrap(err)
+	}
+
+	var avgTransactionFee float64
+	if metricsTotals.TotalTransactions > 0 {
+		avgTransactionFee = metricsTotals.TotalFeesUSD / float64(metricsTotals.TotalTransactions)
+	} else {
+		avgTransactionFee = 0
+	}
+
+	return avgTransactionFee, nil
+}
+
 // GetCommonAccountAPI returns the account associated to an account idx
 func (hdb *HistoryDB) GetCommonAccountAPI(idx common.Idx) (*common.Account, error) {
 	cancel, err := hdb.apiConnCon.Acquire()
@@ -937,266 +1048,7 @@ func (hdb *HistoryDB) GetCommonAccountAPI(idx common.Idx) (*common.Account, erro
 	defer hdb.apiConnCon.Release()
 	account := &common.Account{}
 	err = meddler.QueryRow(
-		hdb.dbRead, account, `SELECT idx, token_id, batch_num, bjj, eth_addr
-		FROM account WHERE idx = $1;`, idx,
+		hdb.db, account, `SELECT * FROM account WHERE idx = $1;`, idx,
 	)
 	return account, tracerr.Wrap(err)
 }
-
-// GetCoordinatorAPI returns a coordinator by its bidderAddr
-func (hdb *HistoryDB) GetCoordinatorAPI(bidderAddr ethCommon.Address) (*CoordinatorAPI, error) {
-	cancel, err := hdb.apiConnCon.Acquire()
-	defer cancel()
-	if err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	defer hdb.apiConnCon.Release()
-	return hdb.getCoordinatorAPI(hdb.dbRead, bidderAddr)
-}
-
-func (hdb *HistoryDB) getCoordinatorAPI(d meddler.DB, bidderAddr ethCommon.Address) (*CoordinatorAPI, error) {
-	coordinator := &CoordinatorAPI{}
-	err := meddler.QueryRow(
-		d, coordinator,
-		"SELECT * FROM coordinator WHERE bidder_addr = $1 ORDER BY item_id DESC LIMIT 1;",
-		bidderAddr,
-	)
-	return coordinator, tracerr.Wrap(err)
-}
-
-// GetNodeInfoAPI retusnt he NodeInfo
-func (hdb *HistoryDB) GetNodeInfoAPI() (*NodeInfo, error) {
-	cancel, err := hdb.apiConnCon.Acquire()
-	defer cancel()
-	if err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	defer hdb.apiConnCon.Release()
-	return hdb.GetNodeInfo()
-}
-
-// GetBucketUpdatesInternalAPI returns the latest bucket updates
-func (hdb *HistoryDB) GetBucketUpdatesInternalAPI() ([]BucketUpdateAPI, error) {
-	var bucketUpdates []*BucketUpdateAPI
-	err := meddler.QueryAll(
-		hdb.dbRead, &bucketUpdates,
-		`SELECT num_bucket, withdrawals FROM bucket_update 
-			WHERE item_id in(SELECT max(item_id) FROM bucket_update 
-			group by num_bucket) 
-			ORDER BY num_bucket ASC;`,
-	)
-	return db.SlicePtrsToSlice(bucketUpdates).([]BucketUpdateAPI), tracerr.Wrap(err)
-}
-
-// GetNextForgersInternalAPI returns next forgers
-func (hdb *HistoryDB) GetNextForgersInternalAPI(auctionVars *common.AuctionVariables,
-	auctionConsts *common.AuctionConstants,
-	lastBlock common.Block, currentSlot, lastClosedSlot int64) ([]NextForgerAPI, error) {
-	secondsPerBlock := int64(15) //nolint:gomnd
-	// currentSlot and lastClosedSlot included
-	limit := uint(lastClosedSlot - currentSlot + 1)
-	bids, _, err := hdb.getBestBidsAPI(hdb.dbRead, &currentSlot, &lastClosedSlot, nil, &limit, "ASC")
-	if err != nil && tracerr.Unwrap(err) != sql.ErrNoRows {
-		return nil, tracerr.Wrap(err)
-	}
-	nextForgers := []NextForgerAPI{}
-	// Get min bid info
-	var minBidInfo []MinBidInfo
-	if currentSlot >= auctionVars.DefaultSlotSetBidSlotNum {
-		// All min bids can be calculated with the last update of AuctionVariables
-
-		minBidInfo = []MinBidInfo{{
-			DefaultSlotSetBid:        auctionVars.DefaultSlotSetBid,
-			DefaultSlotSetBidSlotNum: auctionVars.DefaultSlotSetBidSlotNum,
-		}}
-	} else {
-		// Get all the relevant updates from the DB
-		minBidInfo, err = hdb.getMinBidInfo(hdb.dbRead, currentSlot, lastClosedSlot)
-		if err != nil {
-			return nil, tracerr.Wrap(err)
-		}
-	}
-	// Create nextForger for each slot
-	for i := currentSlot; i <= lastClosedSlot; i++ {
-		fromBlock := i*int64(auctionConsts.BlocksPerSlot) +
-			auctionConsts.GenesisBlockNum
-		toBlock := (i+1)*int64(auctionConsts.BlocksPerSlot) +
-			auctionConsts.GenesisBlockNum - 1
-		nextForger := NextForgerAPI{
-			Period: Period{
-				SlotNum:   i,
-				FromBlock: fromBlock,
-				ToBlock:   toBlock,
-				FromTimestamp: lastBlock.Timestamp.Add(time.Second *
-					time.Duration(secondsPerBlock*(fromBlock-lastBlock.Num))),
-				ToTimestamp: lastBlock.Timestamp.Add(time.Second *
-					time.Duration(secondsPerBlock*(toBlock-lastBlock.Num))),
-			},
-		}
-		foundForger := false
-		// If there is a bid for a slot, get forger (coordinator)
-		for j := range bids {
-			slotNum := bids[j].SlotNum
-			if slotNum == i {
-				// There's a bid for the slot
-				// Check if the bid is greater than the minimum required
-				for i := 0; i < len(minBidInfo); i++ {
-					// Find the most recent update
-					if slotNum >= minBidInfo[i].DefaultSlotSetBidSlotNum {
-						// Get min bid
-						minBidSelector := slotNum % int64(len(auctionVars.DefaultSlotSetBid))
-						minBid := minBidInfo[i].DefaultSlotSetBid[minBidSelector]
-						// Check if the bid has beaten the minimum
-						bid, ok := new(big.Int).SetString(string(bids[j].BidValue), 10)
-						if !ok {
-							return nil, tracerr.New("Wrong bid value, error parsing it as big.Int")
-						}
-						if minBid.Cmp(bid) == 1 {
-							// Min bid is greater than bid, the slot will be forged by boot coordinator
-							break
-						}
-						foundForger = true
-						break
-					}
-				}
-				if !foundForger { // There is no bid or it's smaller than the minimum
-					break
-				}
-				coordinator, err := hdb.getCoordinatorAPI(hdb.dbRead, bids[j].Bidder)
-				if err != nil {
-					return nil, tracerr.Wrap(err)
-				}
-				nextForger.Coordinator = *coordinator
-				break
-			}
-		}
-		// If there is no bid, the coordinator that will forge is boot coordinator
-		if !foundForger {
-			nextForger.Coordinator = CoordinatorAPI{
-				Forger: auctionVars.BootCoordinator,
-				URL:    auctionVars.BootCoordinatorURL,
-			}
-		}
-		nextForgers = append(nextForgers, nextForger)
-	}
-	return nextForgers, nil
-}
-
-// GetMetricsInternalAPI returns the MetricsAPI
-func (hdb *HistoryDB) GetMetricsInternalAPI(lastBatchNum common.BatchNum) (*MetricsAPI, error) {
-	var metrics MetricsAPI
-	// Get the first and last batch of the last 24h and their timestamps
-	// if u.state.Network.LastBatch == nil {
-	// 	return &metrics, nil
-	// }
-	type period struct {
-		FromBatchNum  common.BatchNum `meddler:"from_batch_num"`
-		FromTimestamp time.Time       `meddler:"from_timestamp"`
-		ToBatchNum    common.BatchNum `meddler:"-"`
-		ToTimestamp   time.Time       `meddler:"to_timestamp"`
-	}
-	p := &period{
-		ToBatchNum: lastBatchNum,
-	}
-	if err := meddler.QueryRow(
-		hdb.dbRead, p, `SELECT
-			COALESCE (MIN(batch.batch_num), 0) as from_batch_num,
-			COALESCE (MIN(block.timestamp), NOW()) AS from_timestamp, 
-			COALESCE (MAX(block.timestamp), NOW()) AS to_timestamp
-			FROM batch INNER JOIN block ON batch.eth_block_num = block.eth_block_num
-			WHERE block.timestamp >= NOW() - INTERVAL '24 HOURS';`,
-	); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	// Get the amount of txs of that period
-	row := hdb.dbRead.QueryRow(
-		`SELECT COUNT(*) as total_txs FROM tx WHERE tx.batch_num between $1 AND $2;`,
-		p.FromBatchNum, p.ToBatchNum,
-	)
-	var nTxs int
-	if err := row.Scan(&nTxs); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	// Set txs/s
-	seconds := p.ToTimestamp.Sub(p.FromTimestamp).Seconds()
-	if seconds == 0 { // Avoid dividing by 0
-		seconds++
-	}
-	metrics.TransactionsPerSecond = float64(nTxs) / seconds
-	// Set txs/batch
-	nBatches := p.ToBatchNum - p.FromBatchNum + 1
-	if nBatches == 0 { // Avoid dividing by 0
-		nBatches++
-	}
-	if (p.ToBatchNum - p.FromBatchNum) > 0 {
-		metrics.TransactionsPerBatch = float64(nTxs) /
-			float64(nBatches)
-	} else {
-		metrics.TransactionsPerBatch = 0
-	}
-	// Get total fee of that period
-	row = hdb.dbRead.QueryRow(
-		`SELECT COALESCE (SUM(total_fees_usd), 0) FROM batch WHERE batch_num between $1 AND $2;`,
-		p.FromBatchNum, p.ToBatchNum,
-	)
-	var totalFee float64
-	if err := row.Scan(&totalFee); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	// Set batch frequency
-	metrics.BatchFrequency = seconds / float64(nBatches)
-	// Set avg transaction fee (only L2 txs have fee)
-	row = hdb.dbRead.QueryRow(
-		`SELECT COUNT(*) as total_txs FROM tx WHERE tx.batch_num between $1 AND $2 AND NOT is_l1;`,
-		p.FromBatchNum, p.ToBatchNum,
-	)
-	var nL2Txs int
-	if err := row.Scan(&nL2Txs); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	if nL2Txs > 0 {
-		metrics.AvgTransactionFee = totalFee / float64(nL2Txs)
-	} else {
-		metrics.AvgTransactionFee = 0
-	}
-	// Get and set amount of registered accounts
-	type registeredAccounts struct {
-		TotalIdx int64 `meddler:"total_idx"`
-		TotalBJJ int64 `meddler:"total_bjj"`
-	}
-	ra := &registeredAccounts{}
-	if err := meddler.QueryRow(
-		hdb.dbRead, ra,
-		`SELECT COUNT(*) AS total_bjj, COUNT(DISTINCT(bjj)) AS total_idx FROM account;`,
-	); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	metrics.TotalAccounts = ra.TotalIdx
-	metrics.TotalBJJs = ra.TotalBJJ
-	// Get and set estimated time to forge L1 tx
-	row = hdb.dbRead.QueryRow(
-		`SELECT COALESCE (AVG(EXTRACT(EPOCH FROM (forged.timestamp - added.timestamp))), 0) FROM tx
-			INNER JOIN block AS added ON tx.eth_block_num = added.eth_block_num
-			INNER JOIN batch AS forged_batch ON tx.batch_num = forged_batch.batch_num
-			INNER JOIN block AS forged ON forged_batch.eth_block_num = forged.eth_block_num
-			WHERE tx.batch_num between $1 and $2 AND tx.is_l1 AND tx.user_origin;`,
-		p.FromBatchNum, p.ToBatchNum,
-	)
-	var timeToForgeL1 float64
-	if err := row.Scan(&timeToForgeL1); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	metrics.EstimatedTimeToForgeL1 = timeToForgeL1
-	return &metrics, nil
-}
-
-// GetStateAPI returns the StateAPI
-func (hdb *HistoryDB) GetStateAPI() (*StateAPI, error) {
-	cancel, err := hdb.apiConnCon.Acquire()
-	defer cancel()
-	if err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	defer hdb.apiConnCon.Release()
-	return hdb.getStateAPI(hdb.dbRead)
-}
--- a/db/historydb/historydb.go
+++ b/db/historydb/historydb.go
@@ -27,35 +27,30 @@ const (

 // HistoryDB persist the historic of the rollup
 type HistoryDB struct {
-	dbRead     *sqlx.DB
-	dbWrite    *sqlx.DB
+	db         *sqlx.DB
 	apiConnCon *db.APIConnectionController
 }

 // NewHistoryDB initialize the DB
-func NewHistoryDB(dbRead, dbWrite *sqlx.DB, apiConnCon *db.APIConnectionController) *HistoryDB {
-	return &HistoryDB{
-		dbRead:     dbRead,
-		dbWrite:    dbWrite,
-		apiConnCon: apiConnCon,
-	}
+func NewHistoryDB(db *sqlx.DB, apiConnCon *db.APIConnectionController) *HistoryDB {
+	return &HistoryDB{db: db, apiConnCon: apiConnCon}
 }

 // DB returns a pointer to the L2DB.db. This method should be used only for
 // internal testing purposes.
 func (hdb *HistoryDB) DB() *sqlx.DB {
-	return hdb.dbWrite
+	return hdb.db
 }

 // AddBlock insert a block into the DB
-func (hdb *HistoryDB) AddBlock(block *common.Block) error { return hdb.addBlock(hdb.dbWrite, block) }
+func (hdb *HistoryDB) AddBlock(block *common.Block) error { return hdb.addBlock(hdb.db, block) }
 func (hdb *HistoryDB) addBlock(d meddler.DB, block *common.Block) error {
 	return tracerr.Wrap(meddler.Insert(d, "block", block))
 }

 // AddBlocks inserts blocks into the DB
 func (hdb *HistoryDB) AddBlocks(blocks []common.Block) error {
-	return tracerr.Wrap(hdb.addBlocks(hdb.dbWrite, blocks))
+	return tracerr.Wrap(hdb.addBlocks(hdb.db, blocks))
 }

 func (hdb *HistoryDB) addBlocks(d meddler.DB, blocks []common.Block) error {
@@ -74,7 +69,7 @@ func (hdb *HistoryDB) addBlocks(d meddler.DB, blocks []common.Block) error {
 func (hdb *HistoryDB) GetBlock(blockNum int64) (*common.Block, error) {
 	block := &common.Block{}
 	err := meddler.QueryRow(
-		hdb.dbRead, block,
+		hdb.db, block,
 		"SELECT * FROM block WHERE eth_block_num = $1;", blockNum,
 	)
 	return block, tracerr.Wrap(err)
@@ -84,7 +79,7 @@ func (hdb *HistoryDB) GetBlock(blockNum int64) (*common.Block, error) {
 func (hdb *HistoryDB) GetAllBlocks() ([]common.Block, error) {
 	var blocks []*common.Block
 	err := meddler.QueryAll(
-		hdb.dbRead, &blocks,
+		hdb.db, &blocks,
 		"SELECT * FROM block ORDER BY eth_block_num;",
 	)
 	return db.SlicePtrsToSlice(blocks).([]common.Block), tracerr.Wrap(err)
@@ -94,7 +89,7 @@ func (hdb *HistoryDB) GetAllBlocks() ([]common.Block, error) {
 func (hdb *HistoryDB) getBlocks(from, to int64) ([]common.Block, error) {
 	var blocks []*common.Block
 	err := meddler.QueryAll(
-		hdb.dbRead, &blocks,
+		hdb.db, &blocks,
 		"SELECT * FROM block WHERE $1 <= eth_block_num AND eth_block_num < $2 ORDER BY eth_block_num;",
 		from, to,
 	)
@@ -105,13 +100,13 @@ func (hdb *HistoryDB) getBlocks(from, to int64) ([]common.Block, error) {
 func (hdb *HistoryDB) GetLastBlock() (*common.Block, error) {
 	block := &common.Block{}
 	err := meddler.QueryRow(
-		hdb.dbRead, block, "SELECT * FROM block ORDER BY eth_block_num DESC LIMIT 1;",
+		hdb.db, block, "SELECT * FROM block ORDER BY eth_block_num DESC LIMIT 1;",
 	)
 	return block, tracerr.Wrap(err)
 }

 // AddBatch insert a Batch into the DB
-func (hdb *HistoryDB) AddBatch(batch *common.Batch) error { return hdb.addBatch(hdb.dbWrite, batch) }
+func (hdb *HistoryDB) AddBatch(batch *common.Batch) error { return hdb.addBatch(hdb.db, batch) }
 func (hdb *HistoryDB) addBatch(d meddler.DB, batch *common.Batch) error {
 	// Calculate total collected fees in USD
 	// Get IDs of collected tokens for fees
@@ -134,9 +129,9 @@ func (hdb *HistoryDB) addBatch(d meddler.DB, batch *common.Batch) error {
 		if err != nil {
 			return tracerr.Wrap(err)
 		}
-		query = hdb.dbWrite.Rebind(query)
+		query = hdb.db.Rebind(query)
 		if err := meddler.QueryAll(
-			hdb.dbWrite, &tokenPrices, query, args...,
+			hdb.db, &tokenPrices, query, args...,
 		); err != nil {
 			return tracerr.Wrap(err)
 		}
@@ -158,7 +153,7 @@ func (hdb *HistoryDB) addBatch(d meddler.DB, batch *common.Batch) error {

 // AddBatches insert Bids into the DB
 func (hdb *HistoryDB) AddBatches(batches []common.Batch) error {
-	return tracerr.Wrap(hdb.addBatches(hdb.dbWrite, batches))
+	return tracerr.Wrap(hdb.addBatches(hdb.db, batches))
 }
 func (hdb *HistoryDB) addBatches(d meddler.DB, batches []common.Batch) error {
 	for i := 0; i < len(batches); i++ {
@@ -173,20 +168,20 @@ func (hdb *HistoryDB) addBatches(d meddler.DB, batches []common.Batch) error {
 func (hdb *HistoryDB) GetBatch(batchNum common.BatchNum) (*common.Batch, error) {
 	var batch common.Batch
 	err := meddler.QueryRow(
-		hdb.dbRead, &batch, `SELECT batch.batch_num, batch.eth_block_num, batch.forger_addr,
+		hdb.db, &batch, `SELECT batch.batch_num, batch.eth_block_num, batch.forger_addr,
 		batch.fees_collected, batch.fee_idxs_coordinator, batch.state_root,
 		batch.num_accounts, batch.last_idx, batch.exit_root, batch.forge_l1_txs_num,
 		batch.slot_num, batch.total_fees_usd FROM batch WHERE batch_num = $1;`,
 		batchNum,
 	)
-	return &batch, tracerr.Wrap(err)
+	return &batch, err
 }

 // GetAllBatches retrieve all batches from the DB
 func (hdb *HistoryDB) GetAllBatches() ([]common.Batch, error) {
 	var batches []*common.Batch
 	err := meddler.QueryAll(
-		hdb.dbRead, &batches,
+		hdb.db, &batches,
 		`SELECT batch.batch_num, batch.eth_block_num, batch.forger_addr, batch.fees_collected,
 		 batch.fee_idxs_coordinator, batch.state_root, batch.num_accounts, batch.last_idx, batch.exit_root,
 		 batch.forge_l1_txs_num, batch.slot_num, batch.total_fees_usd FROM batch
@@ -199,7 +194,7 @@ func (hdb *HistoryDB) GetAllBatches() ([]common.Batch, error) {
 func (hdb *HistoryDB) GetBatches(from, to common.BatchNum) ([]common.Batch, error) {
 	var batches []*common.Batch
 	err := meddler.QueryAll(
-		hdb.dbRead, &batches,
+		hdb.db, &batches,
 		`SELECT batch_num, eth_block_num, forger_addr, fees_collected, fee_idxs_coordinator, 
 		state_root, num_accounts, last_idx, exit_root, forge_l1_txs_num, slot_num, total_fees_usd 
 		FROM batch WHERE $1 <= batch_num AND batch_num < $2 ORDER BY batch_num;`,
@@ -211,7 +206,7 @@ func (hdb *HistoryDB) GetBatches(from, to common.BatchNum) ([]common.Batch, erro
 // GetFirstBatchBlockNumBySlot returns the ethereum block number of the first
 // batch within a slot
 func (hdb *HistoryDB) GetFirstBatchBlockNumBySlot(slotNum int64) (int64, error) {
-	row := hdb.dbRead.QueryRow(
+	row := hdb.db.QueryRow(
 		`SELECT eth_block_num FROM batch
 		WHERE slot_num = $1 ORDER BY batch_num ASC LIMIT 1;`, slotNum,
 	)
@@ -221,7 +216,7 @@ func (hdb *HistoryDB) GetFirstBatchBlockNumBySlot(slotNum int64) (int64, error)

 // GetLastBatchNum returns the BatchNum of the latest forged batch
 func (hdb *HistoryDB) GetLastBatchNum() (common.BatchNum, error) {
-	row := hdb.dbRead.QueryRow("SELECT batch_num FROM batch ORDER BY batch_num DESC LIMIT 1;")
+	row := hdb.db.QueryRow("SELECT batch_num FROM batch ORDER BY batch_num DESC LIMIT 1;")
 	var batchNum common.BatchNum
 	return batchNum, tracerr.Wrap(row.Scan(&batchNum))
 }
@@ -230,17 +225,17 @@ func (hdb *HistoryDB) GetLastBatchNum() (common.BatchNum, error) {
 func (hdb *HistoryDB) GetLastBatch() (*common.Batch, error) {
 	var batch common.Batch
 	err := meddler.QueryRow(
-		hdb.dbRead, &batch, `SELECT batch.batch_num, batch.eth_block_num, batch.forger_addr,
+		hdb.db, &batch, `SELECT batch.batch_num, batch.eth_block_num, batch.forger_addr,
 		batch.fees_collected, batch.fee_idxs_coordinator, batch.state_root,
 		batch.num_accounts, batch.last_idx, batch.exit_root, batch.forge_l1_txs_num,
 		batch.slot_num, batch.total_fees_usd FROM batch ORDER BY batch_num DESC LIMIT 1;`,
 	)
-	return &batch, tracerr.Wrap(err)
+	return &batch, err
 }

 // GetLastL1BatchBlockNum returns the blockNum of the latest forged l1Batch
 func (hdb *HistoryDB) GetLastL1BatchBlockNum() (int64, error) {
-	row := hdb.dbRead.QueryRow(`SELECT eth_block_num FROM batch
+	row := hdb.db.QueryRow(`SELECT eth_block_num FROM batch
 		WHERE forge_l1_txs_num IS NOT NULL
 		ORDER BY batch_num DESC LIMIT 1;`)
 	var blockNum int64
@@ -250,7 +245,7 @@ func (hdb *HistoryDB) GetLastL1BatchBlockNum() (int64, error) {
 // GetLastL1TxsNum returns the greatest ForgeL1TxsNum in the DB from forged
 // batches.  If there's no batch in the DB (nil, nil) is returned.
 func (hdb *HistoryDB) GetLastL1TxsNum() (*int64, error) {
-	row := hdb.dbRead.QueryRow("SELECT MAX(forge_l1_txs_num) FROM batch;")
+	row := hdb.db.QueryRow("SELECT MAX(forge_l1_txs_num) FROM batch;")
 	lastL1TxsNum := new(int64)
 	return lastL1TxsNum, tracerr.Wrap(row.Scan(&lastL1TxsNum))
 }
@@ -261,15 +256,15 @@ func (hdb *HistoryDB) GetLastL1TxsNum() (*int64, error) {
 func (hdb *HistoryDB) Reorg(lastValidBlock int64) error {
 	var err error
 	if lastValidBlock < 0 {
-		_, err = hdb.dbWrite.Exec("DELETE FROM block;")
+		_, err = hdb.db.Exec("DELETE FROM block;")
 	} else {
-		_, err = hdb.dbWrite.Exec("DELETE FROM block WHERE eth_block_num > $1;", lastValidBlock)
+		_, err = hdb.db.Exec("DELETE FROM block WHERE eth_block_num > $1;", lastValidBlock)
 	}
 	return tracerr.Wrap(err)
 }

 // AddBids insert Bids into the DB
-func (hdb *HistoryDB) AddBids(bids []common.Bid) error { return hdb.addBids(hdb.dbWrite, bids) }
+func (hdb *HistoryDB) AddBids(bids []common.Bid) error { return hdb.addBids(hdb.db, bids) }
 func (hdb *HistoryDB) addBids(d meddler.DB, bids []common.Bid) error {
 	if len(bids) == 0 {
 		return nil
@@ -286,7 +281,7 @@ func (hdb *HistoryDB) addBids(d meddler.DB, bids []common.Bid) error {
 func (hdb *HistoryDB) GetAllBids() ([]common.Bid, error) {
 	var bids []*common.Bid
 	err := meddler.QueryAll(
-		hdb.dbRead, &bids,
+		hdb.db, &bids,
 		`SELECT bid.slot_num, bid.bid_value, bid.eth_block_num, bid.bidder_addr FROM bid
 		ORDER BY item_id;`,
 	)
@@ -297,7 +292,7 @@ func (hdb *HistoryDB) GetAllBids() ([]common.Bid, error) {
 func (hdb *HistoryDB) GetBestBidCoordinator(slotNum int64) (*common.BidCoordinator, error) {
 	bidCoord := &common.BidCoordinator{}
 	err := meddler.QueryRow(
-		hdb.dbRead, bidCoord,
+		hdb.db, bidCoord,
 		`SELECT (
 			SELECT default_slot_set_bid
 			FROM auction_vars
@@ -320,7 +315,7 @@ func (hdb *HistoryDB) GetBestBidCoordinator(slotNum int64) (*common.BidCoordinat

 // AddCoordinators insert Coordinators into the DB
 func (hdb *HistoryDB) AddCoordinators(coordinators []common.Coordinator) error {
-	return tracerr.Wrap(hdb.addCoordinators(hdb.dbWrite, coordinators))
+	return tracerr.Wrap(hdb.addCoordinators(hdb.db, coordinators))
 }
 func (hdb *HistoryDB) addCoordinators(d meddler.DB, coordinators []common.Coordinator) error {
 	if len(coordinators) == 0 {
@@ -335,7 +330,7 @@ func (hdb *HistoryDB) addCoordinators(d meddler.DB, coordinators []common.Coordi

 // AddExitTree insert Exit tree into the DB
 func (hdb *HistoryDB) AddExitTree(exitTree []common.ExitInfo) error {
-	return tracerr.Wrap(hdb.addExitTree(hdb.dbWrite, exitTree))
+	return tracerr.Wrap(hdb.addExitTree(hdb.db, exitTree))
 }
 func (hdb *HistoryDB) addExitTree(d meddler.DB, exitTree []common.ExitInfo) error {
 	if len(exitTree) == 0 {
@@ -423,13 +418,11 @@ func (hdb *HistoryDB) updateExitTree(d sqlx.Ext, blockNum int64,

 // AddToken insert a token into the DB
 func (hdb *HistoryDB) AddToken(token *common.Token) error {
-	return tracerr.Wrap(meddler.Insert(hdb.dbWrite, "token", token))
+	return tracerr.Wrap(meddler.Insert(hdb.db, "token", token))
 }

 // AddTokens insert tokens into the DB
-func (hdb *HistoryDB) AddTokens(tokens []common.Token) error {
-	return hdb.addTokens(hdb.dbWrite, tokens)
-}
+func (hdb *HistoryDB) AddTokens(tokens []common.Token) error { return hdb.addTokens(hdb.db, tokens) }
 func (hdb *HistoryDB) addTokens(d meddler.DB, tokens []common.Token) error {
 	if len(tokens) == 0 {
 		return nil
@@ -456,10 +449,13 @@ func (hdb *HistoryDB) addTokens(d meddler.DB, tokens []common.Token) error {

 // UpdateTokenValue updates the USD value of a token.  Value is the price in
 // USD of a normalized token (1 token = 10^decimals units)
-func (hdb *HistoryDB) UpdateTokenValue(tokenAddr ethCommon.Address, value float64) error {
-	_, err := hdb.dbWrite.Exec(
-		"UPDATE token SET usd = $1 WHERE eth_addr = $2;",
-		value, tokenAddr,
+func (hdb *HistoryDB) UpdateTokenValue(tokenSymbol string, value float64) error {
+	// Sanitize symbol
+	tokenSymbol = strings.ToValidUTF8(tokenSymbol, " ")
+
+	_, err := hdb.db.Exec(
+		"UPDATE token SET usd = $1 WHERE symbol = $2;",
+		value, tokenSymbol,
 	)
 	return tracerr.Wrap(err)
 }
@@ -468,7 +464,7 @@ func (hdb *HistoryDB) UpdateTokenValue(tokenAddr ethCommon.Address, value float6
 func (hdb *HistoryDB) GetToken(tokenID common.TokenID) (*TokenWithUSD, error) {
 	token := &TokenWithUSD{}
 	err := meddler.QueryRow(
-		hdb.dbRead, token, `SELECT * FROM token WHERE token_id = $1;`, tokenID,
+		hdb.db, token, `SELECT * FROM token WHERE token_id = $1;`, tokenID,
 	)
 	return token, tracerr.Wrap(err)
 }
@@ -477,25 +473,34 @@ func (hdb *HistoryDB) GetToken(tokenID common.TokenID) (*TokenWithUSD, error) {
 func (hdb *HistoryDB) GetAllTokens() ([]TokenWithUSD, error) {
 	var tokens []*TokenWithUSD
 	err := meddler.QueryAll(
-		hdb.dbRead, &tokens,
+		hdb.db, &tokens,
 		"SELECT * FROM token ORDER BY token_id;",
 	)
 	return db.SlicePtrsToSlice(tokens).([]TokenWithUSD), tracerr.Wrap(err)
 }

-// GetTokenSymbolsAndAddrs returns all the token symbols and addresses from the DB
-func (hdb *HistoryDB) GetTokenSymbolsAndAddrs() ([]TokenSymbolAndAddr, error) {
-	var tokens []*TokenSymbolAndAddr
-	err := meddler.QueryAll(
-		hdb.dbRead, &tokens,
-		"SELECT symbol, eth_addr FROM token;",
-	)
-	return db.SlicePtrsToSlice(tokens).([]TokenSymbolAndAddr), tracerr.Wrap(err)
+// GetTokenSymbols returns all the token symbols from the DB
+func (hdb *HistoryDB) GetTokenSymbols() ([]string, error) {
+	var tokenSymbols []string
+	rows, err := hdb.db.Query("SELECT symbol FROM token;")
+	if err != nil {
+		return nil, tracerr.Wrap(err)
+	}
+	defer db.RowsClose(rows)
+	sym := new(string)
+	for rows.Next() {
+		err = rows.Scan(sym)
+		if err != nil {
+			return nil, tracerr.Wrap(err)
+		}
+		tokenSymbols = append(tokenSymbols, *sym)
+	}
+	return tokenSymbols, nil
 }

 // AddAccounts insert accounts into the DB
 func (hdb *HistoryDB) AddAccounts(accounts []common.Account) error {
-	return tracerr.Wrap(hdb.addAccounts(hdb.dbWrite, accounts))
+	return tracerr.Wrap(hdb.addAccounts(hdb.db, accounts))
 }
 func (hdb *HistoryDB) addAccounts(d meddler.DB, accounts []common.Account) error {
 	if len(accounts) == 0 {
@@ -518,7 +523,7 @@ func (hdb *HistoryDB) addAccounts(d meddler.DB, accounts []common.Account) error
 func (hdb *HistoryDB) GetAllAccounts() ([]common.Account, error) {
 	var accs []*common.Account
 	err := meddler.QueryAll(
-		hdb.dbRead, &accs,
+		hdb.db, &accs,
 		"SELECT idx, token_id, batch_num, bjj, eth_addr FROM account ORDER BY idx;",
 	)
 	return db.SlicePtrsToSlice(accs).([]common.Account), tracerr.Wrap(err)
@@ -526,7 +531,7 @@ func (hdb *HistoryDB) GetAllAccounts() ([]common.Account, error) {

 // AddAccountUpdates inserts accUpdates into the DB
 func (hdb *HistoryDB) AddAccountUpdates(accUpdates []common.AccountUpdate) error {
-	return tracerr.Wrap(hdb.addAccountUpdates(hdb.dbWrite, accUpdates))
+	return tracerr.Wrap(hdb.addAccountUpdates(hdb.db, accUpdates))
 }
 func (hdb *HistoryDB) addAccountUpdates(d meddler.DB, accUpdates []common.AccountUpdate) error {
 	if len(accUpdates) == 0 {
@@ -549,7 +554,7 @@ func (hdb *HistoryDB) addAccountUpdates(d meddler.DB, accUpdates []common.Accoun
 func (hdb *HistoryDB) GetAllAccountUpdates() ([]common.AccountUpdate, error) {
 	var accUpdates []*common.AccountUpdate
 	err := meddler.QueryAll(
-		hdb.dbRead, &accUpdates,
+		hdb.db, &accUpdates,
 		"SELECT eth_block_num, batch_num, idx, nonce, balance FROM account_update ORDER BY idx;",
 	)
 	return db.SlicePtrsToSlice(accUpdates).([]common.AccountUpdate), tracerr.Wrap(err)
@@ -560,7 +565,7 @@ func (hdb *HistoryDB) GetAllAccountUpdates() ([]common.AccountUpdate, error) {
 // BatchNum should be null, and the value will be setted by a trigger when a batch forges the tx.
 // EffectiveAmount and EffectiveDepositAmount are seted with default values by the DB.
 func (hdb *HistoryDB) AddL1Txs(l1txs []common.L1Tx) error {
-	return tracerr.Wrap(hdb.addL1Txs(hdb.dbWrite, l1txs))
+	return tracerr.Wrap(hdb.addL1Txs(hdb.db, l1txs))
 }

 // addL1Txs inserts L1 txs to the DB. USD and DepositAmountUSD will be set automatically before storing the tx.
@@ -614,7 +619,7 @@ func (hdb *HistoryDB) addL1Txs(d meddler.DB, l1txs []common.L1Tx) error {

 // AddL2Txs inserts L2 txs to the DB. TokenID, USD and FeeUSD will be set automatically before storing the tx.
 func (hdb *HistoryDB) AddL2Txs(l2txs []common.L2Tx) error {
-	return tracerr.Wrap(hdb.addL2Txs(hdb.dbWrite, l2txs))
+	return tracerr.Wrap(hdb.addL2Txs(hdb.db, l2txs))
 }

 // addL2Txs inserts L2 txs to the DB. TokenID, USD and FeeUSD will be set automatically before storing the tx.
@@ -681,7 +686,7 @@ func (hdb *HistoryDB) addTxs(d meddler.DB, txs []txWrite) error {
 func (hdb *HistoryDB) GetAllExits() ([]common.ExitInfo, error) {
 	var exits []*common.ExitInfo
 	err := meddler.QueryAll(
-		hdb.dbRead, &exits,
+		hdb.db, &exits,
 		`SELECT exit_tree.batch_num, exit_tree.account_idx, exit_tree.merkle_proof,
 		exit_tree.balance, exit_tree.instant_withdrawn, exit_tree.delayed_withdraw_request,
 		exit_tree.delayed_withdrawn FROM exit_tree ORDER BY item_id;`,
@@ -693,11 +698,11 @@ func (hdb *HistoryDB) GetAllExits() ([]common.ExitInfo, error) {
 func (hdb *HistoryDB) GetAllL1UserTxs() ([]common.L1Tx, error) {
 	var txs []*common.L1Tx
 	err := meddler.QueryAll(
-		hdb.dbRead, &txs,
+		hdb.db, &txs, // Note that '\x' gets parsed as a big.Int with value = 0
 		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
 		tx.from_idx, tx.effective_from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id,
-		tx.amount, (CASE WHEN tx.batch_num IS NULL THEN NULL WHEN tx.amount_success THEN tx.amount ELSE 0 END) AS effective_amount,
-		tx.deposit_amount, (CASE WHEN tx.batch_num IS NULL THEN NULL WHEN tx.deposit_amount_success THEN tx.deposit_amount ELSE 0 END) AS effective_deposit_amount,
+		tx.amount, (CASE WHEN tx.batch_num IS NULL THEN NULL WHEN tx.amount_success THEN tx.amount ELSE '\x' END) AS effective_amount,
+		tx.deposit_amount, (CASE WHEN tx.batch_num IS NULL THEN NULL WHEN tx.deposit_amount_success THEN tx.deposit_amount ELSE '\x' END) AS effective_deposit_amount,
 		tx.eth_block_num, tx.type, tx.batch_num
 		FROM tx WHERE is_l1 = TRUE AND user_origin = TRUE ORDER BY item_id;`,
 	)
@@ -710,7 +715,7 @@ func (hdb *HistoryDB) GetAllL1CoordinatorTxs() ([]common.L1Tx, error) {
 	// Since the query specifies that only coordinator txs are returned, it's safe to assume
 	// that returned txs will always have effective amounts
 	err := meddler.QueryAll(
-		hdb.dbRead, &txs,
+		hdb.db, &txs,
 		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
 		tx.from_idx, tx.effective_from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id,
 		tx.amount, tx.amount AS effective_amount,
@@ -725,7 +730,7 @@ func (hdb *HistoryDB) GetAllL1CoordinatorTxs() ([]common.L1Tx, error) {
 func (hdb *HistoryDB) GetAllL2Txs() ([]common.L2Tx, error) {
 	var txs []*common.L2Tx
 	err := meddler.QueryAll(
-		hdb.dbRead, &txs,
+		hdb.db, &txs,
 		`SELECT tx.id, tx.batch_num, tx.position,
 		tx.from_idx, tx.to_idx, tx.amount, tx.token_id,
 		tx.fee, tx.nonce, tx.type, tx.eth_block_num
@@ -738,7 +743,7 @@ func (hdb *HistoryDB) GetAllL2Txs() ([]common.L2Tx, error) {
 func (hdb *HistoryDB) GetUnforgedL1UserTxs(toForgeL1TxsNum int64) ([]common.L1Tx, error) {
 	var txs []*common.L1Tx
 	err := meddler.QueryAll(
-		hdb.dbRead, &txs, // only L1 user txs can have batch_num set to null
+		hdb.db, &txs, // only L1 user txs can have batch_num set to null
 		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
 		tx.from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id,
 		tx.amount, NULL AS effective_amount,
@@ -751,21 +756,11 @@ func (hdb *HistoryDB) GetUnforgedL1UserTxs(toForgeL1TxsNum int64) ([]common.L1Tx
 	return db.SlicePtrsToSlice(txs).([]common.L1Tx), tracerr.Wrap(err)
 }

-// GetUnforgedL1UserTxsCount returns the count of unforged L1Txs (either in
-// open or frozen queues that are not yet forged)
-func (hdb *HistoryDB) GetUnforgedL1UserTxsCount() (int, error) {
-	row := hdb.dbRead.QueryRow(
-		`SELECT COUNT(*) FROM tx WHERE batch_num IS NULL;`,
-	)
-	var count int
-	return count, tracerr.Wrap(row.Scan(&count))
-}
-
 // TODO: Think about chaning all the queries that return a last value, to queries that return the next valid value.

 // GetLastTxsPosition for a given to_forge_l1_txs_num
 func (hdb *HistoryDB) GetLastTxsPosition(toForgeL1TxsNum int64) (int, error) {
-	row := hdb.dbRead.QueryRow(
+	row := hdb.db.QueryRow(
 		"SELECT position FROM tx WHERE to_forge_l1_txs_num = $1 ORDER BY position DESC;",
 		toForgeL1TxsNum,
 	)
@@ -779,15 +774,15 @@ func (hdb *HistoryDB) GetSCVars() (*common.RollupVariables, *common.AuctionVaria
 	var rollup common.RollupVariables
 	var auction common.AuctionVariables
 	var wDelayer common.WDelayerVariables
-	if err := meddler.QueryRow(hdb.dbRead, &rollup,
+	if err := meddler.QueryRow(hdb.db, &rollup,
 		"SELECT * FROM rollup_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
 		return nil, nil, nil, tracerr.Wrap(err)
 	}
-	if err := meddler.QueryRow(hdb.dbRead, &auction,
+	if err := meddler.QueryRow(hdb.db, &auction,
 		"SELECT * FROM auction_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
 		return nil, nil, nil, tracerr.Wrap(err)
 	}
-	if err := meddler.QueryRow(hdb.dbRead, &wDelayer,
+	if err := meddler.QueryRow(hdb.db, &wDelayer,
 		"SELECT * FROM wdelayer_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
 		return nil, nil, nil, tracerr.Wrap(err)
 	}
@@ -832,25 +827,13 @@ func (hdb *HistoryDB) AddBucketUpdatesTest(d meddler.DB, bucketUpdates []common.
 func (hdb *HistoryDB) GetAllBucketUpdates() ([]common.BucketUpdate, error) {
 	var bucketUpdates []*common.BucketUpdate
 	err := meddler.QueryAll(
-		hdb.dbRead, &bucketUpdates,
+		hdb.db, &bucketUpdates,
 		`SELECT eth_block_num, num_bucket, block_stamp, withdrawals  
 		FROM bucket_update ORDER BY item_id;`,
 	)
 	return db.SlicePtrsToSlice(bucketUpdates).([]common.BucketUpdate), tracerr.Wrap(err)
 }

-func (hdb *HistoryDB) getMinBidInfo(d meddler.DB,
-	currentSlot, lastClosedSlot int64) ([]MinBidInfo, error) {
-	minBidInfo := []*MinBidInfo{}
-	query := `
-		SELECT DISTINCT default_slot_set_bid, default_slot_set_bid_slot_num FROM auction_vars
-		WHERE default_slot_set_bid_slot_num < $1
-		ORDER BY default_slot_set_bid_slot_num DESC
-		LIMIT $2;`
-	err := meddler.QueryAll(d, &minBidInfo, query, lastClosedSlot, int(lastClosedSlot-currentSlot)+1)
-	return db.SlicePtrsToSlice(minBidInfo).([]MinBidInfo), tracerr.Wrap(err)
-}
-
 func (hdb *HistoryDB) addTokenExchanges(d meddler.DB, tokenExchanges []common.TokenExchange) error {
 	if len(tokenExchanges) == 0 {
 		return nil
@@ -870,7 +853,7 @@ func (hdb *HistoryDB) addTokenExchanges(d meddler.DB, tokenExchanges []common.To
 func (hdb *HistoryDB) GetAllTokenExchanges() ([]common.TokenExchange, error) {
 	var tokenExchanges []*common.TokenExchange
 	err := meddler.QueryAll(
-		hdb.dbRead, &tokenExchanges,
+		hdb.db, &tokenExchanges,
 		"SELECT eth_block_num, eth_addr, value_usd FROM token_exchange ORDER BY item_id;",
 	)
 	return db.SlicePtrsToSlice(tokenExchanges).([]common.TokenExchange), tracerr.Wrap(err)
@@ -898,7 +881,7 @@ func (hdb *HistoryDB) addEscapeHatchWithdrawals(d meddler.DB,
 func (hdb *HistoryDB) GetAllEscapeHatchWithdrawals() ([]common.WDelayerEscapeHatchWithdrawal, error) {
 	var escapeHatchWithdrawals []*common.WDelayerEscapeHatchWithdrawal
 	err := meddler.QueryAll(
-		hdb.dbRead, &escapeHatchWithdrawals,
+		hdb.db, &escapeHatchWithdrawals,
 		"SELECT eth_block_num, who_addr, to_addr, token_addr, amount FROM escape_hatch_withdrawal ORDER BY item_id;",
 	)
 	return db.SlicePtrsToSlice(escapeHatchWithdrawals).([]common.WDelayerEscapeHatchWithdrawal),
@@ -911,7 +894,7 @@ func (hdb *HistoryDB) GetAllEscapeHatchWithdrawals() ([]common.WDelayerEscapeHat
 // exist in the smart contracts.
 func (hdb *HistoryDB) SetInitialSCVars(rollup *common.RollupVariables,
 	auction *common.AuctionVariables, wDelayer *common.WDelayerVariables) error {
-	txn, err := hdb.dbWrite.Beginx()
+	txn, err := hdb.db.Beginx()
 	if err != nil {
 		return tracerr.Wrap(err)
 	}
@@ -995,7 +978,7 @@ func (hdb *HistoryDB) setExtraInfoForgedL1UserTxs(d sqlx.Ext, txs []common.L1Tx)
 // the pagination system of the API/DB depends on this.  Within blocks, all
 // items should also be in the correct order (Accounts, Tokens, Txs, etc.)
 func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
-	txn, err := hdb.dbWrite.Beginx()
+	txn, err := hdb.db.Beginx()
 	if err != nil {
 		return tracerr.Wrap(err)
 	}
@@ -1149,17 +1132,28 @@ func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
 	return tracerr.Wrap(txn.Commit())
 }

+// GetCoordinatorAPI returns a coordinator by its bidderAddr
+func (hdb *HistoryDB) GetCoordinatorAPI(bidderAddr ethCommon.Address) (*CoordinatorAPI, error) {
+	coordinator := &CoordinatorAPI{}
+	err := meddler.QueryRow(
+		hdb.db, coordinator,
+		"SELECT * FROM coordinator WHERE bidder_addr = $1 ORDER BY item_id DESC LIMIT 1;",
+		bidderAddr,
+	)
+	return coordinator, tracerr.Wrap(err)
+}
+
 // AddAuctionVars insert auction vars into the DB
 func (hdb *HistoryDB) AddAuctionVars(auctionVars *common.AuctionVariables) error {
-	return tracerr.Wrap(meddler.Insert(hdb.dbWrite, "auction_vars", auctionVars))
+	return tracerr.Wrap(meddler.Insert(hdb.db, "auction_vars", auctionVars))
 }

 // GetTokensTest used to get tokens in a testing context
 func (hdb *HistoryDB) GetTokensTest() ([]TokenWithUSD, error) {
 	tokens := []*TokenWithUSD{}
 	if err := meddler.QueryAll(
-		hdb.dbRead, &tokens,
-		"SELECT * FROM token ORDER BY token_id ASC",
+		hdb.db, &tokens,
+		"SELECT * FROM TOKEN",
 	); err != nil {
 		return nil, tracerr.Wrap(err)
 	}
@@ -1168,60 +1162,3 @@ func (hdb *HistoryDB) GetTokensTest() ([]TokenWithUSD, error) {
 	}
 	return db.SlicePtrsToSlice(tokens).([]TokenWithUSD), nil
 }
-
-const (
-	// CreateAccountExtraFeePercentage is the multiplication factor over
-	// the average fee for CreateAccount that is applied to obtain the
-	// recommended fee for CreateAccount
-	CreateAccountExtraFeePercentage float64 = 2.5
-	// CreateAccountInternalExtraFeePercentage is the multiplication factor
-	// over the average fee for CreateAccountInternal that is applied to
-	// obtain the recommended fee for CreateAccountInternal
-	CreateAccountInternalExtraFeePercentage float64 = 2.0
-)
-
-// GetRecommendedFee returns the RecommendedFee information
-func (hdb *HistoryDB) GetRecommendedFee(minFeeUSD float64) (*common.RecommendedFee, error) {
-	var recommendedFee common.RecommendedFee
-	// Get total txs and the batch of the first selected tx of the last hour
-	type totalTxsSinceBatchNum struct {
-		TotalTxs      int             `meddler:"total_txs"`
-		FirstBatchNum common.BatchNum `meddler:"batch_num"`
-	}
-	ttsbn := &totalTxsSinceBatchNum{}
-	if err := meddler.QueryRow(
-		hdb.dbRead, ttsbn, `SELECT COUNT(tx.*) as total_txs, 
-			COALESCE (MIN(tx.batch_num), 0) as batch_num 
-			FROM tx INNER JOIN block ON tx.eth_block_num = block.eth_block_num
-			WHERE block.timestamp >= NOW() - INTERVAL '1 HOURS';`,
-	); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	// Get the amount of batches and acumulated fees for the last hour
-	type totalBatchesAndFee struct {
-		TotalBatches int     `meddler:"total_batches"`
-		TotalFees    float64 `meddler:"total_fees"`
-	}
-	tbf := &totalBatchesAndFee{}
-	if err := meddler.QueryRow(
-		hdb.dbRead, tbf, `SELECT COUNT(*) AS total_batches, 
-			COALESCE (SUM(total_fees_usd), 0) AS total_fees FROM batch 
-			WHERE batch_num > $1;`, ttsbn.FirstBatchNum,
-	); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	// Update NodeInfo struct
-	var avgTransactionFee float64
-	if ttsbn.TotalTxs > 0 {
-		avgTransactionFee = tbf.TotalFees / float64(ttsbn.TotalTxs)
-	} else {
-		avgTransactionFee = 0
-	}
-	recommendedFee.ExistingAccount =
-		math.Max(avgTransactionFee, minFeeUSD)
-	recommendedFee.CreatesAccount =
-		math.Max(CreateAccountExtraFeePercentage*avgTransactionFee, minFeeUSD)
-	recommendedFee.CreatesAccountInternal =
-		math.Max(CreateAccountInternalExtraFeePercentage*avgTransactionFee, minFeeUSD)
-	return &recommendedFee, nil
-}
--- a/db/historydb/historydb_test.go
+++ b/db/historydb/historydb_test.go
@@ -11,7 +11,6 @@ import (
 	"time"

 	ethCommon "github.com/ethereum/go-ethereum/common"
-	"github.com/hermeznetwork/hermez-node/apitypes"
 	"github.com/hermeznetwork/hermez-node/common"
 	dbUtils "github.com/hermeznetwork/hermez-node/db"
 	"github.com/hermeznetwork/hermez-node/log"
@@ -40,12 +39,12 @@ func TestMain(m *testing.M) {
 	if err != nil {
 		panic(err)
 	}
-	historyDB = NewHistoryDB(db, db, nil)
+	historyDB = NewHistoryDB(db, nil)
 	if err != nil {
 		panic(err)
 	}
-	apiConnCon := dbUtils.NewAPIConnectionController(1, time.Second)
-	historyDBWithACC = NewHistoryDB(db, db, apiConnCon)
+	apiConnCon := dbUtils.NewAPICnnectionController(1, time.Second)
+	historyDBWithACC = NewHistoryDB(db, apiConnCon)
 	// Run tests
 	result := m.Run()
 	// Close DB
@@ -167,7 +166,7 @@ func TestBatches(t *testing.T) {
 			if i%2 != 0 {
 				// Set value to the token
 				value := (float64(i) + 5) * 5.389329
-				assert.NoError(t, historyDB.UpdateTokenValue(token.EthAddr, value))
+				assert.NoError(t, historyDB.UpdateTokenValue(token.Symbol, value))
 				tokensValue[token.TokenID] = value / math.Pow(10, float64(token.Decimals))
 			}
 		}
@@ -277,7 +276,7 @@ func TestTokens(t *testing.T) {
 	// Update token value
 	for i, token := range tokens {
 		value := 1.01 * float64(i)
-		assert.NoError(t, historyDB.UpdateTokenValue(token.EthAddr, value))
+		assert.NoError(t, historyDB.UpdateTokenValue(token.Symbol, value))
 	}
 	// Fetch tokens
 	fetchedTokens, err = historyDB.GetTokensTest()
@@ -303,7 +302,7 @@ func TestTokensUTF8(t *testing.T) {
 	// Generate fake tokens
 	const nTokens = 5
 	tokens, ethToken := test.GenTokens(nTokens, blocks)
-	nonUTFTokens := make([]common.Token, len(tokens))
+	nonUTFTokens := make([]common.Token, len(tokens)+1)
 	// Force token.name and token.symbol to be non UTF-8 Strings
 	for i, token := range tokens {
 		token.Name = fmt.Sprint("NON-UTF8-NAME-\xc5-", i)
@@ -333,7 +332,7 @@ func TestTokensUTF8(t *testing.T) {
 	// Update token value
 	for i, token := range nonUTFTokens {
 		value := 1.01 * float64(i)
-		assert.NoError(t, historyDB.UpdateTokenValue(token.EthAddr, value))
+		assert.NoError(t, historyDB.UpdateTokenValue(token.Symbol, value))
 	}
 	// Fetch tokens
 	fetchedTokens, err = historyDB.GetTokensTest()
@@ -721,10 +720,6 @@ func TestGetUnforgedL1UserTxs(t *testing.T) {
 	assert.Equal(t, 5, len(l1UserTxs))
 	assert.Equal(t, blocks[0].Rollup.L1UserTxs, l1UserTxs)

-	count, err := historyDB.GetUnforgedL1UserTxsCount()
-	require.NoError(t, err)
-	assert.Equal(t, 5, count)
-
 	// No l1UserTxs for this toForgeL1TxsNum
 	l1UserTxs, err = historyDB.GetUnforgedL1UserTxs(2)
 	require.NoError(t, err)
@@ -822,11 +817,11 @@ func TestSetExtraInfoForgedL1UserTxs(t *testing.T) {
 	}
 	// Add second batch to trigger the update of the batch_num,
 	// while avoiding the implicit call of setExtraInfoForgedL1UserTxs
-	err = historyDB.addBlock(historyDB.dbWrite, &blocks[1].Block)
+	err = historyDB.addBlock(historyDB.db, &blocks[1].Block)
 	require.NoError(t, err)
-	err = historyDB.addBatch(historyDB.dbWrite, &blocks[1].Rollup.Batches[0].Batch)
+	err = historyDB.addBatch(historyDB.db, &blocks[1].Rollup.Batches[0].Batch)
 	require.NoError(t, err)
-	err = historyDB.addAccounts(historyDB.dbWrite, blocks[1].Rollup.Batches[0].CreatedAccounts)
+	err = historyDB.addAccounts(historyDB.db, blocks[1].Rollup.Batches[0].CreatedAccounts)
 	require.NoError(t, err)

 	// Set the Effective{Amount,DepositAmount} of the L1UserTxs that are forged in the second block
@@ -836,7 +831,7 @@ func TestSetExtraInfoForgedL1UserTxs(t *testing.T) {
 	l1Txs[1].EffectiveAmount = big.NewInt(0)
 	l1Txs[2].EffectiveDepositAmount = big.NewInt(0)
 	l1Txs[2].EffectiveAmount = big.NewInt(0)
-	err = historyDB.setExtraInfoForgedL1UserTxs(historyDB.dbWrite, l1Txs)
+	err = historyDB.setExtraInfoForgedL1UserTxs(historyDB.db, l1Txs)
 	require.NoError(t, err)

 	dbL1Txs, err := historyDB.GetAllL1UserTxs()
@@ -923,10 +918,10 @@ func TestUpdateExitTree(t *testing.T) {
 		common.WithdrawInfo{Idx: 259, NumExitRoot: 3, InstantWithdraw: false,
 			Owner: tc.UsersByIdx[259].Addr, Token: tokenAddr},
 	)
-	err = historyDB.addBlock(historyDB.dbWrite, &block.Block)
+	err = historyDB.addBlock(historyDB.db, &block.Block)
 	require.NoError(t, err)

-	err = historyDB.updateExitTree(historyDB.dbWrite, block.Block.Num,
+	err = historyDB.updateExitTree(historyDB.db, block.Block.Num,
 		block.Rollup.Withdrawals, block.WDelayer.Withdrawals)
 	require.NoError(t, err)

@@ -956,10 +951,10 @@ func TestUpdateExitTree(t *testing.T) {
 			Token:  tokenAddr,
 			Amount: big.NewInt(80),
 		})
-	err = historyDB.addBlock(historyDB.dbWrite, &block.Block)
+	err = historyDB.addBlock(historyDB.db, &block.Block)
 	require.NoError(t, err)

-	err = historyDB.updateExitTree(historyDB.dbWrite, block.Block.Num,
+	err = historyDB.updateExitTree(historyDB.db, block.Block.Num,
 		block.Rollup.Withdrawals, block.WDelayer.Withdrawals)
 	require.NoError(t, err)

@@ -1002,7 +997,7 @@ func TestGetBestBidCoordinator(t *testing.T) {
 			URL:         "bar",
 		},
 	}
-	err = historyDB.addCoordinators(historyDB.dbWrite, coords)
+	err = historyDB.addCoordinators(historyDB.db, coords)
 	require.NoError(t, err)

 	bids := []common.Bid{
@@ -1020,7 +1015,7 @@ func TestGetBestBidCoordinator(t *testing.T) {
 		},
 	}

-	err = historyDB.addBids(historyDB.dbWrite, bids)
+	err = historyDB.addBids(historyDB.db, bids)
 	require.NoError(t, err)

 	forger10, err := historyDB.GetBestBidCoordinator(10)
@@ -1058,7 +1053,7 @@ func TestAddBucketUpdates(t *testing.T) {
 			Withdrawals: big.NewInt(42),
 		},
 	}
-	err := historyDB.addBucketUpdates(historyDB.dbWrite, bucketUpdates)
+	err := historyDB.addBucketUpdates(historyDB.db, bucketUpdates)
 	require.NoError(t, err)
 	dbBucketUpdates, err := historyDB.GetAllBucketUpdates()
 	require.NoError(t, err)
@@ -1083,7 +1078,7 @@ func TestAddTokenExchanges(t *testing.T) {
 			ValueUSD:    67890,
 		},
 	}
-	err := historyDB.addTokenExchanges(historyDB.dbWrite, tokenExchanges)
+	err := historyDB.addTokenExchanges(historyDB.db, tokenExchanges)
 	require.NoError(t, err)
 	dbTokenExchanges, err := historyDB.GetAllTokenExchanges()
 	require.NoError(t, err)
@@ -1112,7 +1107,7 @@ func TestAddEscapeHatchWithdrawals(t *testing.T) {
 			Amount:      big.NewInt(20003),
 		},
 	}
-	err := historyDB.addEscapeHatchWithdrawals(historyDB.dbWrite, escapeHatchWithdrawals)
+	err := historyDB.addEscapeHatchWithdrawals(historyDB.db, escapeHatchWithdrawals)
 	require.NoError(t, err)
 	dbEscapeHatchWithdrawals, err := historyDB.GetAllEscapeHatchWithdrawals()
 	require.NoError(t, err)
@@ -1177,15 +1172,19 @@ func TestGetMetricsAPI(t *testing.T) {
 		assert.NoError(t, err)
 	}

-	res, err := historyDB.GetMetricsInternalAPI(common.BatchNum(numBatches))
+	res, err := historyDBWithACC.GetMetricsAPI(common.BatchNum(numBatches))
 	assert.NoError(t, err)

-	assert.Equal(t, float64(numTx)/float64(numBatches), res.TransactionsPerBatch)
+	assert.Equal(t, float64(numTx)/float64(numBatches-1), res.TransactionsPerBatch)

 	// Frequency is not exactly the desired one, some decimals may appear
-	// There is a -2 as time for first and last batch is not taken into account
-	assert.InEpsilon(t, float64(frequency)*float64(numBatches-2)/float64(numBatches), res.BatchFrequency, 0.01)
-	assert.InEpsilon(t, float64(numTx)/float64(frequency*blockNum-frequency), res.TransactionsPerSecond, 0.01)
+	assert.GreaterOrEqual(t, res.BatchFrequency, float64(frequency))
+	assert.Less(t, res.BatchFrequency, float64(frequency+1))
+	// Truncate frecuency into an int to do an exact check
+	assert.Equal(t, frequency, int(res.BatchFrequency))
+	// This may also be different in some decimals
+	// Truncate it to the third decimal to compare
+	assert.Equal(t, math.Trunc((float64(numTx)/float64(frequency*blockNum-frequency))/0.001)*0.001, math.Trunc(res.TransactionsPerSecond/0.001)*0.001)
 	assert.Equal(t, int64(3), res.TotalAccounts)
 	assert.Equal(t, int64(3), res.TotalBJJs)
 	// Til does not set fees
@@ -1255,7 +1254,7 @@ func TestGetMetricsAPIMoreThan24Hours(t *testing.T) {
 		assert.NoError(t, err)
 	}

-	res, err := historyDBWithACC.GetMetricsInternalAPI(common.BatchNum(numBatches))
+	res, err := historyDBWithACC.GetMetricsAPI(common.BatchNum(numBatches))
 	assert.NoError(t, err)

 	assert.InEpsilon(t, 1.0, res.TransactionsPerBatch, 0.1)
@@ -1270,7 +1269,13 @@ func TestGetMetricsAPIMoreThan24Hours(t *testing.T) {

 func TestGetMetricsAPIEmpty(t *testing.T) {
 	test.WipeDB(historyDB.DB())
-	_, err := historyDBWithACC.GetMetricsInternalAPI(0)
+	_, err := historyDBWithACC.GetMetricsAPI(0)
+	assert.NoError(t, err)
+}
+
+func TestGetAvgTxFeeEmpty(t *testing.T) {
+	test.WipeDB(historyDB.DB())
+	_, err := historyDBWithACC.GetAvgTxFeeAPI()
 	assert.NoError(t, err)
 }

@@ -1459,128 +1464,3 @@ func setTestBlocks(from, to int64) []common.Block {
 	}
 	return blocks
 }
-
-func TestNodeInfo(t *testing.T) {
-	test.WipeDB(historyDB.DB())
-
-	err := historyDB.SetStateInternalAPI(&StateAPI{})
-	require.NoError(t, err)
-
-	clientSetup := test.NewClientSetupExample()
-	constants := &Constants{
-		SCConsts: common.SCConsts{
-			Rollup:   *clientSetup.RollupConstants,
-			Auction:  *clientSetup.AuctionConstants,
-			WDelayer: *clientSetup.WDelayerConstants,
-		},
-		ChainID:       42,
-		HermezAddress: clientSetup.AuctionConstants.HermezRollup,
-	}
-	err = historyDB.SetConstants(constants)
-	require.NoError(t, err)
-
-	// Test parameters
-	var f64 float64 = 1.2
-	var i64 int64 = 8888
-	addr := ethCommon.HexToAddress("0x1234")
-	hash := ethCommon.HexToHash("0x5678")
-	stateAPI := &StateAPI{
-		NodePublicConfig: NodePublicConfig{
-			ForgeDelay: 3.1,
-		},
-		Network: NetworkAPI{
-			LastEthBlock:  12,
-			LastSyncBlock: 34,
-			LastBatch: &BatchAPI{
-				ItemID:       123,
-				BatchNum:     456,
-				EthBlockNum:  789,
-				EthBlockHash: hash,
-				Timestamp:    time.Now(),
-				ForgerAddr:   addr,
-				// CollectedFeesDB: map[common.TokenID]*big.Int{
-				// 	0: big.NewInt(11111),
-				// 	1: big.NewInt(21111),
-				// 	2: big.NewInt(31111),
-				// },
-				CollectedFeesAPI: apitypes.CollectedFeesAPI(map[common.TokenID]apitypes.BigIntStr{
-					0: apitypes.BigIntStr("11111"),
-					1: apitypes.BigIntStr("21111"),
-					2: apitypes.BigIntStr("31111"),
-				}),
-				TotalFeesUSD:  &f64,
-				StateRoot:     apitypes.BigIntStr("1234"),
-				NumAccounts:   11,
-				ExitRoot:      apitypes.BigIntStr("5678"),
-				ForgeL1TxsNum: &i64,
-				SlotNum:       44,
-				ForgedTxs:     23,
-				TotalItems:    0,
-				FirstItem:     0,
-				LastItem:      0,
-			},
-			CurrentSlot: 22,
-			NextForgers: []NextForgerAPI{
-				{
-					Coordinator: CoordinatorAPI{
-						ItemID:      111,
-						Bidder:      addr,
-						Forger:      addr,
-						EthBlockNum: 566,
-						URL:         "asd",
-						TotalItems:  0,
-						FirstItem:   0,
-						LastItem:    0,
-					},
-					Period: Period{
-						SlotNum:       33,
-						FromBlock:     55,
-						ToBlock:       66,
-						FromTimestamp: time.Now(),
-						ToTimestamp:   time.Now(),
-					},
-				},
-			},
-		},
-		Metrics: MetricsAPI{
-			TransactionsPerBatch: 1.1,
-			TotalAccounts:        42,
-		},
-		Rollup:            *NewRollupVariablesAPI(clientSetup.RollupVariables),
-		Auction:           *NewAuctionVariablesAPI(clientSetup.AuctionVariables),
-		WithdrawalDelayer: *clientSetup.WDelayerVariables,
-		RecommendedFee: common.RecommendedFee{
-			ExistingAccount: 0.15,
-		},
-	}
-	err = historyDB.SetStateInternalAPI(stateAPI)
-	require.NoError(t, err)
-
-	nodeConfig := &NodeConfig{
-		MaxPoolTxs: 123,
-		MinFeeUSD:  0.5,
-	}
-	err = historyDB.SetNodeConfig(nodeConfig)
-	require.NoError(t, err)
-
-	dbConstants, err := historyDB.GetConstants()
-	require.NoError(t, err)
-	assert.Equal(t, constants, dbConstants)
-
-	dbNodeConfig, err := historyDB.GetNodeConfig()
-	require.NoError(t, err)
-	assert.Equal(t, nodeConfig, dbNodeConfig)
-
-	dbStateAPI, err := historyDB.getStateAPI(historyDB.dbRead)
-	require.NoError(t, err)
-	assert.Equal(t, stateAPI.Network.LastBatch.Timestamp.Unix(),
-		dbStateAPI.Network.LastBatch.Timestamp.Unix())
-	dbStateAPI.Network.LastBatch.Timestamp = stateAPI.Network.LastBatch.Timestamp
-	assert.Equal(t, stateAPI.Network.NextForgers[0].Period.FromTimestamp.Unix(),
-		dbStateAPI.Network.NextForgers[0].Period.FromTimestamp.Unix())
-	dbStateAPI.Network.NextForgers[0].Period.FromTimestamp = stateAPI.Network.NextForgers[0].Period.FromTimestamp
-	assert.Equal(t, stateAPI.Network.NextForgers[0].Period.ToTimestamp.Unix(),
-		dbStateAPI.Network.NextForgers[0].Period.ToTimestamp.Unix())
-	dbStateAPI.Network.NextForgers[0].Period.ToTimestamp = stateAPI.Network.NextForgers[0].Period.ToTimestamp
-	assert.Equal(t, stateAPI, dbStateAPI)
-}
--- a/db/historydb/nodeinfo.go
+++ b/db/historydb/nodeinfo.go
@@ -1,170 +0,0 @@
-package historydb
-
-import (
-	"time"
-
-	ethCommon "github.com/ethereum/go-ethereum/common"
-	"github.com/hermeznetwork/hermez-node/apitypes"
-	"github.com/hermeznetwork/hermez-node/common"
-	"github.com/hermeznetwork/tracerr"
-	"github.com/russross/meddler"
-)
-
-// Period represents a time period in ethereum
-type Period struct {
-	SlotNum       int64     `json:"slotNum"`
-	FromBlock     int64     `json:"fromBlock"`
-	ToBlock       int64     `json:"toBlock"`
-	FromTimestamp time.Time `json:"fromTimestamp"`
-	ToTimestamp   time.Time `json:"toTimestamp"`
-}
-
-// NextForgerAPI represents the next forger exposed via the API
-type NextForgerAPI struct {
-	Coordinator CoordinatorAPI `json:"coordinator"`
-	Period      Period         `json:"period"`
-}
-
-// NetworkAPI is the network state exposed via the API
-type NetworkAPI struct {
-	LastEthBlock  int64           `json:"lastEthereumBlock"`
-	LastSyncBlock int64           `json:"lastSynchedBlock"`
-	LastBatch     *BatchAPI       `json:"lastBatch"`
-	CurrentSlot   int64           `json:"currentSlot"`
-	NextForgers   []NextForgerAPI `json:"nextForgers"`
-}
-
-// NodePublicConfig is the configuration of the node that is exposed via API
-type NodePublicConfig struct {
-	// ForgeDelay in seconds
-	ForgeDelay float64 `json:"forgeDelay"`
-}
-
-// StateAPI is an object representing the node and network state exposed via the API
-type StateAPI struct {
-	// NodePublicConfig is the configuration of the node that is exposed via API
-	NodePublicConfig  NodePublicConfig         `json:"nodeConfig"`
-	Network           NetworkAPI               `json:"network"`
-	Metrics           MetricsAPI               `json:"metrics"`
-	Rollup            RollupVariablesAPI       `json:"rollup"`
-	Auction           AuctionVariablesAPI      `json:"auction"`
-	WithdrawalDelayer common.WDelayerVariables `json:"withdrawalDelayer"`
-	RecommendedFee    common.RecommendedFee    `json:"recommendedFee"`
-}
-
-// Constants contains network constants
-type Constants struct {
-	common.SCConsts
-	ChainID       uint16
-	HermezAddress ethCommon.Address
-}
-
-// NodeConfig contains the node config exposed in the API
-type NodeConfig struct {
-	MaxPoolTxs uint32
-	MinFeeUSD  float64
-	ForgeDelay float64
-}
-
-// NodeInfo contains information about he node used when serving the API
-type NodeInfo struct {
-	ItemID     int         `meddler:"item_id,pk"`
-	StateAPI   *StateAPI   `meddler:"state,json"`
-	NodeConfig *NodeConfig `meddler:"config,json"`
-	Constants  *Constants  `meddler:"constants,json"`
-}
-
-// GetNodeInfo returns the NodeInfo
-func (hdb *HistoryDB) GetNodeInfo() (*NodeInfo, error) {
-	ni := &NodeInfo{}
-	err := meddler.QueryRow(
-		hdb.dbRead, ni, `SELECT * FROM node_info WHERE item_id = 1;`,
-	)
-	return ni, tracerr.Wrap(err)
-}
-
-// GetConstants returns the Constats
-func (hdb *HistoryDB) GetConstants() (*Constants, error) {
-	var nodeInfo NodeInfo
-	err := meddler.QueryRow(
-		hdb.dbRead, &nodeInfo,
-		"SELECT constants FROM node_info WHERE item_id = 1;",
-	)
-	return nodeInfo.Constants, tracerr.Wrap(err)
-}
-
-// SetConstants sets the Constants
-func (hdb *HistoryDB) SetConstants(constants *Constants) error {
-	_constants := struct {
-		Constants *Constants `meddler:"constants,json"`
-	}{constants}
-	values, err := meddler.Default.Values(&_constants, false)
-	if err != nil {
-		return tracerr.Wrap(err)
-	}
-	_, err = hdb.dbWrite.Exec(
-		"UPDATE node_info SET constants = $1 WHERE item_id = 1;",
-		values[0],
-	)
-	return tracerr.Wrap(err)
-}
-
-// GetStateInternalAPI returns the StateAPI
-func (hdb *HistoryDB) GetStateInternalAPI() (*StateAPI, error) {
-	return hdb.getStateAPI(hdb.dbRead)
-}
-
-func (hdb *HistoryDB) getStateAPI(d meddler.DB) (*StateAPI, error) {
-	var nodeInfo NodeInfo
-	err := meddler.QueryRow(
-		d, &nodeInfo,
-		"SELECT state FROM node_info WHERE item_id = 1;",
-	)
-	return nodeInfo.StateAPI, tracerr.Wrap(err)
-}
-
-// SetStateInternalAPI sets the StateAPI
-func (hdb *HistoryDB) SetStateInternalAPI(stateAPI *StateAPI) error {
-	if stateAPI.Network.LastBatch != nil {
-		stateAPI.Network.LastBatch.CollectedFeesAPI =
-			apitypes.NewCollectedFeesAPI(stateAPI.Network.LastBatch.CollectedFeesDB)
-	}
-	_stateAPI := struct {
-		StateAPI *StateAPI `meddler:"state,json"`
-	}{stateAPI}
-	values, err := meddler.Default.Values(&_stateAPI, false)
-	if err != nil {
-		return tracerr.Wrap(err)
-	}
-	_, err = hdb.dbWrite.Exec(
-		"UPDATE node_info SET state = $1 WHERE item_id = 1;",
-		values[0],
-	)
-	return tracerr.Wrap(err)
-}
-
-// GetNodeConfig returns the NodeConfig
-func (hdb *HistoryDB) GetNodeConfig() (*NodeConfig, error) {
-	var nodeInfo NodeInfo
-	err := meddler.QueryRow(
-		hdb.dbRead, &nodeInfo,
-		"SELECT config FROM node_info WHERE item_id = 1;",
-	)
-	return nodeInfo.NodeConfig, tracerr.Wrap(err)
-}
-
-// SetNodeConfig sets the NodeConfig
-func (hdb *HistoryDB) SetNodeConfig(nodeConfig *NodeConfig) error {
-	_nodeConfig := struct {
-		NodeConfig *NodeConfig `meddler:"config,json"`
-	}{nodeConfig}
-	values, err := meddler.Default.Values(&_nodeConfig, false)
-	if err != nil {
-		return tracerr.Wrap(err)
-	}
-	_, err = hdb.dbWrite.Exec(
-		"UPDATE node_info SET config = $1 WHERE item_id = 1;",
-		values[0],
-	)
-	return tracerr.Wrap(err)
-}
--- a/db/historydb/views.go
+++ b/db/historydb/views.go
@@ -147,12 +147,6 @@ type txWrite struct {
 	Nonce *common.Nonce       `meddler:"nonce"`
 }

-// TokenSymbolAndAddr token representation with only Eth addr and symbol
-type TokenSymbolAndAddr struct {
-	Symbol string            `meddler:"symbol"`
-	Addr   ethCommon.Address `meddler:"eth_addr"`
-}
-
 // TokenWithUSD add USD info to common.Token
 type TokenWithUSD struct {
 	ItemID      uint64            `json:"itemId" meddler:"item_id"`
@@ -289,35 +283,44 @@ func (account AccountAPI) MarshalJSON() ([]byte, error) {
 // BatchAPI is a representation of a batch with additional information
 // required by the API, and extracted by joining block table
 type BatchAPI struct {
-	ItemID           uint64                      `json:"itemId" meddler:"item_id"`
-	BatchNum         common.BatchNum             `json:"batchNum" meddler:"batch_num"`
-	EthBlockNum      int64                       `json:"ethereumBlockNum" meddler:"eth_block_num"`
-	EthBlockHash     ethCommon.Hash              `json:"ethereumBlockHash" meddler:"hash"`
-	Timestamp        time.Time                   `json:"timestamp" meddler:"timestamp,utctime"`
-	ForgerAddr       ethCommon.Address           `json:"forgerAddr" meddler:"forger_addr"`
-	CollectedFeesDB  map[common.TokenID]*big.Int `json:"-" meddler:"fees_collected,json"`
-	CollectedFeesAPI apitypes.CollectedFeesAPI   `json:"collectedFees" meddler:"-"`
-	TotalFeesUSD     *float64                    `json:"historicTotalCollectedFeesUSD" meddler:"total_fees_usd"`
-	StateRoot        apitypes.BigIntStr          `json:"stateRoot" meddler:"state_root"`
-	NumAccounts      int                         `json:"numAccounts" meddler:"num_accounts"`
-	ExitRoot         apitypes.BigIntStr          `json:"exitRoot" meddler:"exit_root"`
-	ForgeL1TxsNum    *int64                      `json:"forgeL1TransactionsNum" meddler:"forge_l1_txs_num"`
-	SlotNum          int64                       `json:"slotNum" meddler:"slot_num"`
-	ForgedTxs        int                         `json:"forgedTransactions" meddler:"forged_txs"`
-	TotalItems       uint64                      `json:"-" meddler:"total_items"`
-	FirstItem        uint64                      `json:"-" meddler:"first_item"`
-	LastItem         uint64                      `json:"-" meddler:"last_item"`
+	ItemID        uint64                 `json:"itemId" meddler:"item_id"`
+	BatchNum      common.BatchNum        `json:"batchNum" meddler:"batch_num"`
+	EthBlockNum   int64                  `json:"ethereumBlockNum" meddler:"eth_block_num"`
+	EthBlockHash  ethCommon.Hash         `json:"ethereumBlockHash" meddler:"hash"`
+	Timestamp     time.Time              `json:"timestamp" meddler:"timestamp,utctime"`
+	ForgerAddr    ethCommon.Address      `json:"forgerAddr" meddler:"forger_addr"`
+	CollectedFees apitypes.CollectedFees `json:"collectedFees" meddler:"fees_collected,json"`
+	TotalFeesUSD  *float64               `json:"historicTotalCollectedFeesUSD" meddler:"total_fees_usd"`
+	StateRoot     apitypes.BigIntStr     `json:"stateRoot" meddler:"state_root"`
+	NumAccounts   int                    `json:"numAccounts" meddler:"num_accounts"`
+	ExitRoot      apitypes.BigIntStr     `json:"exitRoot" meddler:"exit_root"`
+	ForgeL1TxsNum *int64                 `json:"forgeL1TransactionsNum" meddler:"forge_l1_txs_num"`
+	SlotNum       int64                  `json:"slotNum" meddler:"slot_num"`
+	ForgedTxs     int                    `json:"forgedTransactions" meddler:"forged_txs"`
+	TotalItems    uint64                 `json:"-" meddler:"total_items"`
+	FirstItem     uint64                 `json:"-" meddler:"first_item"`
+	LastItem      uint64                 `json:"-" meddler:"last_item"`
 }

-// MetricsAPI define metrics of the network
-type MetricsAPI struct {
-	TransactionsPerBatch   float64 `json:"transactionsPerBatch"`
-	BatchFrequency         float64 `json:"batchFrequency"`
-	TransactionsPerSecond  float64 `json:"transactionsPerSecond"`
-	TotalAccounts          int64   `json:"totalAccounts" meddler:"total_accounts"`
-	TotalBJJs              int64   `json:"totalBJJs" meddler:"total_bjjs"`
-	AvgTransactionFee      float64 `json:"avgTransactionFee"`
-	EstimatedTimeToForgeL1 float64 `json:"estimatedTimeToForgeL1" meddler:"estimated_time_to_forge_l1"`
+// Metrics define metrics of the network
+type Metrics struct {
+	TransactionsPerBatch  float64 `json:"transactionsPerBatch"`
+	BatchFrequency        float64 `json:"batchFrequency"`
+	TransactionsPerSecond float64 `json:"transactionsPerSecond"`
+	TotalAccounts         int64   `json:"totalAccounts" meddler:"total_accounts"`
+	TotalBJJs             int64   `json:"totalBJJs" meddler:"total_bjjs"`
+	AvgTransactionFee     float64 `json:"avgTransactionFee"`
+}
+
+// MetricsTotals is used to get temporal information from HistoryDB
+// to calculate data to be stored into the Metrics struct
+type MetricsTotals struct {
+	TotalTransactions uint64          `meddler:"total_txs"`
+	FirstBatchNum     common.BatchNum `meddler:"batch_num"`
+	TotalBatches      int64           `meddler:"total_batches"`
+	TotalFeesUSD      float64         `meddler:"total_fees"`
+	MinTimestamp      time.Time       `meddler:"min_timestamp,utctime"`
+	MaxTimestamp      time.Time       `meddler:"max_timestamp,utctime"`
 }

 // BidAPI is a representation of a bid with additional information
@@ -370,27 +373,6 @@ type RollupVariablesAPI struct {
 	SafeMode              bool                                          `json:"safeMode" meddler:"safe_mode"`
 }

-// NewRollupVariablesAPI creates a RollupVariablesAPI from common.RollupVariables
-func NewRollupVariablesAPI(rollupVariables *common.RollupVariables) *RollupVariablesAPI {
-	rollupVars := RollupVariablesAPI{
-		EthBlockNum:           rollupVariables.EthBlockNum,
-		FeeAddToken:           apitypes.NewBigIntStr(rollupVariables.FeeAddToken),
-		ForgeL1L2BatchTimeout: rollupVariables.ForgeL1L2BatchTimeout,
-		WithdrawalDelay:       rollupVariables.WithdrawalDelay,
-		SafeMode:              rollupVariables.SafeMode,
-	}
-
-	for i, bucket := range rollupVariables.Buckets {
-		rollupVars.Buckets[i] = BucketParamsAPI{
-			CeilUSD:             apitypes.NewBigIntStr(bucket.CeilUSD),
-			Withdrawals:         apitypes.NewBigIntStr(bucket.Withdrawals),
-			BlockWithdrawalRate: apitypes.NewBigIntStr(bucket.BlockWithdrawalRate),
-			MaxWithdrawals:      apitypes.NewBigIntStr(bucket.MaxWithdrawals),
-		}
-	}
-	return &rollupVars
-}
-
 // AuctionVariablesAPI are the variables of the Auction Smart Contract
 type AuctionVariablesAPI struct {
 	EthBlockNum int64 `json:"ethereumBlockNum" meddler:"eth_block_num"`
@@ -415,28 +397,3 @@ type AuctionVariablesAPI struct {
 	// SlotDeadline Number of blocks at the end of a slot in which any coordinator can forge if the winner has not forged one before
 	SlotDeadline uint8 `json:"slotDeadline" meddler:"slot_deadline" validate:"required"`
 }
-
-// NewAuctionVariablesAPI creates a AuctionVariablesAPI from common.AuctionVariables
-func NewAuctionVariablesAPI(auctionVariables *common.AuctionVariables) *AuctionVariablesAPI {
-	auctionVars := AuctionVariablesAPI{
-		EthBlockNum:              auctionVariables.EthBlockNum,
-		DonationAddress:          auctionVariables.DonationAddress,
-		BootCoordinator:          auctionVariables.BootCoordinator,
-		BootCoordinatorURL:       auctionVariables.BootCoordinatorURL,
-		DefaultSlotSetBidSlotNum: auctionVariables.DefaultSlotSetBidSlotNum,
-		ClosedAuctionSlots:       auctionVariables.ClosedAuctionSlots,
-		OpenAuctionSlots:         auctionVariables.OpenAuctionSlots,
-		Outbidding:               auctionVariables.Outbidding,
-		SlotDeadline:             auctionVariables.SlotDeadline,
-	}
-
-	for i, slot := range auctionVariables.DefaultSlotSetBid {
-		auctionVars.DefaultSlotSetBid[i] = apitypes.NewBigIntStr(slot)
-	}
-
-	for i, ratio := range auctionVariables.AllocationRatio {
-		auctionVars.AllocationRatio[i] = ratio
-	}
-
-	return &auctionVars
-}
--- a/db/kvdb/kvdb.go
+++ b/db/kvdb/kvdb.go
@@ -316,7 +316,7 @@ func (k *KVDB) ResetFromSynchronizer(batchNum common.BatchNum, synchronizerKVDB

 	checkpointPath := path.Join(k.cfg.Path, fmt.Sprintf("%s%d", PathBatchNum, batchNum))

-	// copy synchronizer 'BatchNumX' to 'BatchNumX'
+	// copy synchronizer'BatchNumX' to 'BatchNumX'
 	if err := synchronizerKVDB.MakeCheckpointFromTo(batchNum, checkpointPath); err != nil {
 		return tracerr.Wrap(err)
 	}
@@ -458,7 +458,7 @@ func (k *KVDB) CheckpointExists(batchNum common.BatchNum) (bool, error) {
 	if _, err := os.Stat(source); os.IsNotExist(err) {
 		return false, nil
 	} else if err != nil {
-		return false, tracerr.Wrap(err)
+		return false, err
 	}
 	return true, nil
 }
@@ -544,12 +544,10 @@ func (k *KVDB) MakeCheckpointFromTo(fromBatchNum common.BatchNum, dest string) e
 	// synchronizer to the same batchNum
 	k.m.Lock()
 	defer k.m.Unlock()
-	return PebbleMakeCheckpoint(source, dest)
+	return pebbleMakeCheckpoint(source, dest)
 }

-// PebbleMakeCheckpoint is a hepler function to make a pebble checkpoint from
-// source to dest.
-func PebbleMakeCheckpoint(source, dest string) error {
+func pebbleMakeCheckpoint(source, dest string) error {
 	// Remove dest folder (if it exists) before doing the checkpoint
 	if _, err := os.Stat(dest); os.IsNotExist(err) {
 	} else if err != nil {
--- a/db/l2db/apiqueries.go
+++ b/db/l2db/apiqueries.go
@@ -34,7 +34,7 @@ func (l2db *L2DB) GetAccountCreationAuthAPI(addr ethCommon.Address) (*AccountCre
 	defer l2db.apiConnCon.Release()
 	auth := new(AccountCreationAuthAPI)
 	return auth, tracerr.Wrap(meddler.QueryRow(
-		l2db.dbRead, auth,
+		l2db.db, auth,
 		"SELECT * FROM account_creation_auth WHERE eth_addr = $1;",
 		addr,
 	))
@@ -49,8 +49,8 @@ func (l2db *L2DB) AddTxAPI(tx *PoolL2TxWrite) error {
 	}
 	defer l2db.apiConnCon.Release()

-	row := l2db.dbRead.QueryRow(`SELECT
-		($1::NUMERIC * COALESCE(token.usd, 0) * fee_percentage($2::NUMERIC)) /
+	row := l2db.db.QueryRow(`SELECT
+		($1::NUMERIC * token.usd * fee_percentage($2::NUMERIC)) /
 			(10.0 ^ token.decimals::NUMERIC)
 		FROM token WHERE token.token_id = $3;`,
 		tx.AmountFloat, tx.Fee, tx.TokenID)
@@ -80,11 +80,11 @@ func (l2db *L2DB) AddTxAPI(tx *PoolL2TxWrite) error {
 	q := fmt.Sprintf(
 		`INSERT INTO tx_pool (%s)
 		SELECT %s
-		WHERE (SELECT COUNT(*) FROM tx_pool WHERE state = $%v AND NOT external_delete) < $%v;`,
+		WHERE (SELECT COUNT(*) FROM tx_pool WHERE state = $%v) < $%v;`,
 		namesPart, valuesPart,
 		len(values)+1, len(values)+2) //nolint:gomnd
 	values = append(values, common.PoolL2TxStatePending, l2db.maxTxs)
-	res, err := l2db.dbWrite.Exec(q, values...)
+	res, err := l2db.db.Exec(q, values...)
 	if err != nil {
 		return tracerr.Wrap(err)
 	}
@@ -118,7 +118,7 @@ func (l2db *L2DB) GetTxAPI(txID common.TxID) (*PoolTxAPI, error) {
 	defer l2db.apiConnCon.Release()
 	tx := new(PoolTxAPI)
 	return tx, tracerr.Wrap(meddler.QueryRow(
-		l2db.dbRead, tx,
+		l2db.db, tx,
 		selectPoolTxAPI+"WHERE tx_id = $1;",
 		txID,
 	))
--- a/db/l2db/l2db.go
+++ b/db/l2db/l2db.go
@@ -21,8 +21,7 @@ import (
 // L2DB stores L2 txs and authorization registers received by the coordinator and keeps them until they are no longer relevant
 // due to them being forged or invalid after a safety period
 type L2DB struct {
-	dbRead       *sqlx.DB
-	dbWrite      *sqlx.DB
+	db           *sqlx.DB
 	safetyPeriod common.BatchNum
 	ttl          time.Duration
 	maxTxs       uint32 // limit of txs that are accepted in the pool
@@ -34,7 +33,7 @@ type L2DB struct {
 // To create it, it's needed db connection, safety period expressed in batches,
 // maxTxs that the DB should have and TTL (time to live) for pending txs.
 func NewL2DB(
-	dbRead, dbWrite *sqlx.DB,
+	db *sqlx.DB,
 	safetyPeriod common.BatchNum,
 	maxTxs uint32,
 	minFeeUSD float64,
@@ -42,8 +41,7 @@ func NewL2DB(
 	apiConnCon *db.APIConnectionController,
 ) *L2DB {
 	return &L2DB{
-		dbRead:       dbRead,
-		dbWrite:      dbWrite,
+		db:           db,
 		safetyPeriod: safetyPeriod,
 		ttl:          TTL,
 		maxTxs:       maxTxs,
@@ -55,18 +53,12 @@ func NewL2DB(
 // DB returns a pointer to the L2DB.db. This method should be used only for
 // internal testing purposes.
 func (l2db *L2DB) DB() *sqlx.DB {
-	return l2db.dbWrite
-}
-
-// MinFeeUSD returns the minimum fee in USD that is required to accept txs into
-// the pool
-func (l2db *L2DB) MinFeeUSD() float64 {
-	return l2db.minFeeUSD
+	return l2db.db
 }

 // AddAccountCreationAuth inserts an account creation authorization into the DB
 func (l2db *L2DB) AddAccountCreationAuth(auth *common.AccountCreationAuth) error {
-	_, err := l2db.dbWrite.Exec(
+	_, err := l2db.db.Exec(
 		`INSERT INTO account_creation_auth (eth_addr, bjj, signature)
 		VALUES ($1, $2, $3);`,
 		auth.EthAddr, auth.BJJ, auth.Signature,
@@ -74,21 +66,11 @@ func (l2db *L2DB) AddAccountCreationAuth(auth *common.AccountCreationAuth) error
 	return tracerr.Wrap(err)
 }

-// AddManyAccountCreationAuth inserts a batch of accounts creation authorization
-// if not exist into the DB
-func (l2db *L2DB) AddManyAccountCreationAuth(auths []common.AccountCreationAuth) error {
-	_, err := sqlx.NamedExec(l2db.dbWrite,
-		`INSERT INTO account_creation_auth (eth_addr, bjj, signature)
-				VALUES (:ethaddr, :bjj, :signature) 
-				ON CONFLICT (eth_addr) DO NOTHING`, auths)
-	return tracerr.Wrap(err)
-}
-
 // GetAccountCreationAuth returns an account creation authorization from the DB
 func (l2db *L2DB) GetAccountCreationAuth(addr ethCommon.Address) (*common.AccountCreationAuth, error) {
 	auth := new(common.AccountCreationAuth)
 	return auth, tracerr.Wrap(meddler.QueryRow(
-		l2db.dbRead, auth,
+		l2db.db, auth,
 		"SELECT * FROM account_creation_auth WHERE eth_addr = $1;",
 		addr,
 	))
@@ -117,7 +99,7 @@ func (l2db *L2DB) UpdateTxsInfo(txs []common.PoolL2Tx) error {
 		WHERE tx_pool.tx_id = tx_update.id;
 	`
 	if len(txUpdates) > 0 {
-		if _, err := sqlx.NamedExec(l2db.dbWrite, query, txUpdates); err != nil {
+		if _, err := sqlx.NamedExec(l2db.db, query, txUpdates); err != nil {
 			return tracerr.Wrap(err)
 		}
 	}
@@ -176,7 +158,7 @@ func NewPoolL2TxWriteFromPoolL2Tx(tx *common.PoolL2Tx) *PoolL2TxWrite {
 func (l2db *L2DB) AddTxTest(tx *common.PoolL2Tx) error {
 	insertTx := NewPoolL2TxWriteFromPoolL2Tx(tx)
 	// insert tx
-	return tracerr.Wrap(meddler.Insert(l2db.dbWrite, "tx_pool", insertTx))
+	return tracerr.Wrap(meddler.Insert(l2db.db, "tx_pool", insertTx))
 }

 // selectPoolTxCommon select part of queries to get common.PoolL2Tx
@@ -193,7 +175,7 @@ FROM tx_pool INNER JOIN token ON tx_pool.token_id = token.token_id `
 func (l2db *L2DB) GetTx(txID common.TxID) (*common.PoolL2Tx, error) {
 	tx := new(common.PoolL2Tx)
 	return tx, tracerr.Wrap(meddler.QueryRow(
-		l2db.dbRead, tx,
+		l2db.db, tx,
 		selectPoolTxCommon+"WHERE tx_id = $1;",
 		txID,
 	))
@@ -203,8 +185,8 @@ func (l2db *L2DB) GetTx(txID common.TxID) (*common.PoolL2Tx, error) {
 func (l2db *L2DB) GetPendingTxs() ([]common.PoolL2Tx, error) {
 	var txs []*common.PoolL2Tx
 	err := meddler.QueryAll(
-		l2db.dbRead, &txs,
-		selectPoolTxCommon+"WHERE state = $1 AND NOT external_delete;",
+		l2db.db, &txs,
+		selectPoolTxCommon+"WHERE state = $1",
 		common.PoolL2TxStatePending,
 	)
 	return db.SlicePtrsToSlice(txs).([]common.PoolL2Tx), tracerr.Wrap(err)
@@ -228,8 +210,8 @@ func (l2db *L2DB) StartForging(txIDs []common.TxID, batchNum common.BatchNum) er
 	if err != nil {
 		return tracerr.Wrap(err)
 	}
-	query = l2db.dbWrite.Rebind(query)
-	_, err = l2db.dbWrite.Exec(query, args...)
+	query = l2db.db.Rebind(query)
+	_, err = l2db.db.Exec(query, args...)
 	return tracerr.Wrap(err)
 }

@@ -251,8 +233,8 @@ func (l2db *L2DB) DoneForging(txIDs []common.TxID, batchNum common.BatchNum) err
 	if err != nil {
 		return tracerr.Wrap(err)
 	}
-	query = l2db.dbWrite.Rebind(query)
-	_, err = l2db.dbWrite.Exec(query, args...)
+	query = l2db.db.Rebind(query)
+	_, err = l2db.db.Exec(query, args...)
 	return tracerr.Wrap(err)
 }

@@ -273,8 +255,8 @@ func (l2db *L2DB) InvalidateTxs(txIDs []common.TxID, batchNum common.BatchNum) e
 	if err != nil {
 		return tracerr.Wrap(err)
 	}
-	query = l2db.dbWrite.Rebind(query)
-	_, err = l2db.dbWrite.Exec(query, args...)
+	query = l2db.db.Rebind(query)
+	_, err = l2db.db.Exec(query, args...)
 	return tracerr.Wrap(err)
 }

@@ -282,7 +264,7 @@ func (l2db *L2DB) InvalidateTxs(txIDs []common.TxID, batchNum common.BatchNum) e
 // of unique FromIdx
 func (l2db *L2DB) GetPendingUniqueFromIdxs() ([]common.Idx, error) {
 	var idxs []common.Idx
-	rows, err := l2db.dbRead.Query(`SELECT DISTINCT from_idx FROM tx_pool
+	rows, err := l2db.db.Query(`SELECT DISTINCT from_idx FROM tx_pool
 		WHERE state = $1;`, common.PoolL2TxStatePending)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
@@ -320,10 +302,10 @@ func (l2db *L2DB) InvalidateOldNonces(updatedAccounts []common.IdxNonce, batchNu
 		return nil
 	}
 	// Fill the batch_num in the query with Sprintf because we are using a
-	// named query which works with slices, and doesn't handle an extra
+	// named query which works with slices, and doens't handle an extra
 	// individual argument.
 	query := fmt.Sprintf(invalidateOldNoncesQuery, batchNum)
-	if _, err := sqlx.NamedExec(l2db.dbWrite, query, updatedAccounts); err != nil {
+	if _, err := sqlx.NamedExec(l2db.db, query, updatedAccounts); err != nil {
 		return tracerr.Wrap(err)
 	}
 	return nil
@@ -332,7 +314,7 @@ func (l2db *L2DB) InvalidateOldNonces(updatedAccounts []common.IdxNonce, batchNu
 // Reorg updates the state of txs that were updated in a batch that has been discarted due to a blockchain reorg.
 // The state of the affected txs can change form Forged -> Pending or from Invalid -> Pending
 func (l2db *L2DB) Reorg(lastValidBatch common.BatchNum) error {
-	_, err := l2db.dbWrite.Exec(
+	_, err := l2db.db.Exec(
 		`UPDATE tx_pool SET batch_num = NULL, state = $1
 		WHERE (state = $2 OR state = $3 OR state = $4) AND batch_num > $5`,
 		common.PoolL2TxStatePending,
@@ -348,7 +330,7 @@ func (l2db *L2DB) Reorg(lastValidBatch common.BatchNum) error {
 // it also deletes pending txs that have been in the L2DB for longer than the ttl if maxTxs has been exceeded
 func (l2db *L2DB) Purge(currentBatchNum common.BatchNum) (err error) {
 	now := time.Now().UTC().Unix()
-	_, err = l2db.dbWrite.Exec(
+	_, err = l2db.db.Exec(
 		`DELETE FROM tx_pool WHERE (
 			batch_num < $1 AND (state = $2 OR state = $3)
 		) OR (
@@ -369,7 +351,7 @@ func (l2db *L2DB) Purge(currentBatchNum common.BatchNum) (err error) {
 // the `external_delete` column.  An external process can set this column to
 // true to instruct the coordinator to delete the tx when possible.
 func (l2db *L2DB) PurgeByExternalDelete() error {
-	_, err := l2db.dbWrite.Exec(
+	_, err := l2db.db.Exec(
 		`DELETE from tx_pool WHERE (external_delete = true AND state = $1);`,
 		common.PoolL2TxStatePending,
 	)
--- a/db/l2db/l2db_test.go
+++ b/db/l2db/l2db_test.go
@@ -37,11 +37,11 @@ func TestMain(m *testing.M) {
 	if err != nil {
 		panic(err)
 	}
-	l2DB = NewL2DB(db, db, 10, 1000, 0.0, 24*time.Hour, nil)
-	apiConnCon := dbUtils.NewAPIConnectionController(1, time.Second)
-	l2DBWithACC = NewL2DB(db, db, 10, 1000, 0.0, 24*time.Hour, apiConnCon)
+	l2DB = NewL2DB(db, 10, 1000, 0.0, 24*time.Hour, nil)
+	apiConnCon := dbUtils.NewAPICnnectionController(1, time.Second)
+	l2DBWithACC = NewL2DB(db, 10, 1000, 0.0, 24*time.Hour, apiConnCon)
 	test.WipeDB(l2DB.DB())
-	historyDB = historydb.NewHistoryDB(db, db, nil)
+	historyDB = historydb.NewHistoryDB(db, nil)
 	// Run tests
 	result := m.Run()
 	// Close DB
@@ -121,7 +121,7 @@ func prepareHistoryDB(historyDB *historydb.HistoryDB) error {
 			}
 			tokens[token.TokenID] = readToken
 			// Set value to the tokens
-			err := historyDB.UpdateTokenValue(readToken.EthAddr, *readToken.USD)
+			err := historyDB.UpdateTokenValue(readToken.Symbol, *readToken.USD)
 			if err != nil {
 				return tracerr.Wrap(err)
 			}
@@ -660,7 +660,7 @@ func TestPurge(t *testing.T) {
 	}
 	// Set batchNum keeped txs
 	for i := range keepedIDs {
-		_, err = l2DB.dbWrite.Exec(
+		_, err = l2DB.db.Exec(
 			"UPDATE tx_pool SET batch_num = $1 WHERE tx_id = $2;",
 			safeBatchNum, keepedIDs[i],
 		)
@@ -679,7 +679,7 @@ func TestPurge(t *testing.T) {
 	deleteTimestamp := time.Unix(time.Now().UTC().Unix()-int64(l2DB.ttl.Seconds()+float64(4*time.Second)), 0)
 	for _, id := range afterTTLIDs {
 		// Set timestamp
-		_, err = l2DB.dbWrite.Exec(
+		_, err = l2DB.db.Exec(
 			"UPDATE tx_pool SET timestamp = $1, state = $2 WHERE tx_id = $3;",
 			deleteTimestamp, common.PoolL2TxStatePending, id,
 		)
@@ -725,43 +725,6 @@ func TestAuth(t *testing.T) {
 	}
 }

-func TestManyAuth(t *testing.T) {
-	test.WipeDB(l2DB.DB())
-	const nAuths = 5
-	chainID := uint16(0)
-	hermezContractAddr := ethCommon.HexToAddress("0xc344E203a046Da13b0B4467EB7B3629D0C99F6E6")
-	// Generate authorizations
-	genAuths := test.GenAuths(nAuths, chainID, hermezContractAddr)
-	auths := make([]common.AccountCreationAuth, len(genAuths))
-	// Convert to a non-pointer slice
-	for i := 0; i < len(genAuths); i++ {
-		auths[i] = *genAuths[i]
-	}
-
-	// Add a duplicate one to check the not exist condition
-	err := l2DB.AddAccountCreationAuth(genAuths[0])
-	require.NoError(t, err)
-
-	// Add to the DB
-	err = l2DB.AddManyAccountCreationAuth(auths)
-	require.NoError(t, err)
-
-	// Assert the result
-	for i := 0; i < len(auths); i++ {
-		// Fetch from DB
-		auth, err := l2DB.GetAccountCreationAuth(auths[i].EthAddr)
-		require.NoError(t, err)
-		// Check fetched vs generated
-		assert.Equal(t, auths[i].EthAddr, auth.EthAddr)
-		assert.Equal(t, auths[i].BJJ, auth.BJJ)
-		assert.Equal(t, auths[i].Signature, auth.Signature)
-		assert.Equal(t, auths[i].Timestamp.Unix(), auths[i].Timestamp.Unix())
-		nameZone, offset := auths[i].Timestamp.Zone()
-		assert.Equal(t, "UTC", nameZone)
-		assert.Equal(t, 0, offset)
-	}
-}
-
 func TestAddGet(t *testing.T) {
 	err := prepareHistoryDB(historyDB)
 	if err != nil {
@@ -834,7 +797,7 @@ func TestPurgeByExternalDelete(t *testing.T) {
 	require.NoError(t, l2DB.StartForging(
 		[]common.TxID{txs[4].TxID, txs[5].TxID, txs[6].TxID, txs[7].TxID},
 		1))
-	_, err = l2DB.dbWrite.Exec(
+	_, err = l2DB.db.Exec(
 		`UPDATE tx_pool SET external_delete = true WHERE
 			tx_id IN ($1, $2, $3, $4)
 		;`,
--- a/db/l2db/views.go
+++ b/db/l2db/views.go
@@ -95,6 +95,7 @@ func (tx PoolTxAPI) MarshalJSON() ([]byte, error) {
 		"info":                        tx.Info,
 		"signature":                   tx.Signature,
 		"timestamp":                   tx.Timestamp,
+		"batchNum":                    tx.BatchNum,
 		"requestFromAccountIndex":     tx.RqFromIdx,
 		"requestToAccountIndex":       tx.RqToIdx,
 		"requestToHezEthereumAddress": tx.RqToEthAddr,
--- a/db/migrations/0001.sql
+++ b/db/migrations/0001.sql
@@ -1,11 +1,5 @@
 -- +migrate Up

-- NOTE: We use "DECIMAL(78,0)" to encode go *big.Int types.  All the *big.Int
-- that we deal with represent a value in the SNARK field, which is an integer
-- of 256 bits.  `log(2**256, 10) = 77.06`: that is, a 256 bit number can have
-- at most 78 digits, so we use this value to specify the precision in the
-- PostgreSQL DECIMAL guaranteeing that we will never lose precision.
-
 -- History
 CREATE TABLE block (
    eth_block_num BIGINT PRIMARY KEY,
@@ -28,10 +22,10 @@ CREATE TABLE batch (
    forger_addr BYTEA NOT NULL, -- fake foreign key for coordinator
    fees_collected BYTEA NOT NULL,
    fee_idxs_coordinator BYTEA NOT NULL,
-    state_root DECIMAL(78,0) NOT NULL,
+    state_root BYTEA NOT NULL,
    num_accounts BIGINT NOT NULL,
    last_idx BIGINT NOT NULL,
-    exit_root DECIMAL(78,0) NOT NULL,
+    exit_root BYTEA NOT NULL,
    forge_l1_txs_num BIGINT,
    slot_num BIGINT NOT NULL,
    total_fees_usd NUMERIC
@@ -40,7 +34,7 @@ CREATE TABLE batch (
 CREATE TABLE bid (
    item_id SERIAL PRIMARY KEY,
    slot_num BIGINT NOT NULL,
-    bid_value DECIMAL(78,0) NOT NULL,
+    bid_value BYTEA NOT NULL,
    eth_block_num BIGINT NOT NULL REFERENCES block (eth_block_num) ON DELETE CASCADE,
    bidder_addr BYTEA NOT NULL -- fake foreign key for coordinator
 );
@@ -112,7 +106,7 @@ CREATE TABLE account_update (
    batch_num BIGINT NOT NULL REFERENCES batch (batch_num) ON DELETE CASCADE,
    idx BIGINT NOT NULL REFERENCES account (idx) ON DELETE CASCADE,
    nonce BIGINT NOT NULL,
-    balance DECIMAL(78,0) NOT NULL
+    balance BYTEA NOT NULL
 );

 CREATE TABLE exit_tree (
@@ -120,7 +114,7 @@ CREATE TABLE exit_tree (
    batch_num BIGINT REFERENCES batch (batch_num) ON DELETE CASCADE,
    account_idx BIGINT REFERENCES account (idx) ON DELETE CASCADE,
    merkle_proof BYTEA NOT NULL,
-    balance DECIMAL(78,0) NOT NULL,
+    balance BYTEA NOT NULL,
    instant_withdrawn BIGINT REFERENCES block (eth_block_num) ON DELETE SET NULL,
    delayed_withdraw_request BIGINT REFERENCES block (eth_block_num) ON DELETE SET NULL,
    owner BYTEA,
@@ -170,7 +164,7 @@ CREATE TABLE tx (
    to_idx BIGINT NOT NULL,
    to_eth_addr BYTEA,
    to_bjj BYTEA,
-    amount DECIMAL(78,0) NOT NULL,
+    amount BYTEA NOT NULL,
    amount_success BOOLEAN NOT NULL DEFAULT true,
    amount_f NUMERIC NOT NULL,
    token_id INT NOT NULL REFERENCES token (token_id),
@@ -180,7 +174,7 @@ CREATE TABLE tx (
    -- L1
    to_forge_l1_txs_num BIGINT,
    user_origin BOOLEAN,
-    deposit_amount DECIMAL(78,0),
+    deposit_amount BYTEA,
    deposit_amount_success BOOLEAN NOT NULL DEFAULT true,
    deposit_amount_f NUMERIC,
    deposit_amount_usd NUMERIC,
@@ -550,7 +544,7 @@ FOR EACH ROW EXECUTE PROCEDURE forge_l1_user_txs();

 CREATE TABLE rollup_vars (
    eth_block_num BIGINT PRIMARY KEY REFERENCES block (eth_block_num) ON DELETE CASCADE,
-    fee_add_token DECIMAL(78,0) NOT NULL,
+    fee_add_token BYTEA NOT NULL,
    forge_l1_timeout BIGINT NOT NULL,
    withdrawal_delay BIGINT NOT NULL,
    buckets BYTEA NOT NULL,
@@ -562,7 +556,7 @@ CREATE TABLE bucket_update (
    eth_block_num BIGINT NOT NULL REFERENCES block (eth_block_num) ON DELETE CASCADE,
    num_bucket BIGINT NOT NULL,
    block_stamp BIGINT NOT NULL,
-    withdrawals DECIMAL(78,0) NOT NULL
+    withdrawals BYTEA NOT NULL
 );

 CREATE TABLE token_exchange (
@@ -578,7 +572,7 @@ CREATE TABLE escape_hatch_withdrawal (
    who_addr BYTEA NOT NULL,
    to_addr BYTEA NOT NULL,
    token_addr BYTEA NOT NULL,
-    amount DECIMAL(78,0) NOT NULL
+    amount BYTEA NOT NULL
 );

 CREATE TABLE auction_vars (
@@ -616,7 +610,7 @@ CREATE TABLE tx_pool (
    effective_to_eth_addr BYTEA,
    effective_to_bjj BYTEA,
    token_id INT NOT NULL REFERENCES token (token_id) ON DELETE CASCADE,
-    amount DECIMAL(78,0) NOT NULL,
+    amount BYTEA NOT NULL,
    amount_f NUMERIC NOT NULL,
    fee SMALLINT NOT NULL,
    nonce BIGINT NOT NULL,
@@ -630,7 +624,7 @@ CREATE TABLE tx_pool (
    rq_to_eth_addr BYTEA,
    rq_to_bjj BYTEA,
    rq_token_id INT,
-    rq_amount DECIMAL(78,0),
+    rq_amount BYTEA,
    rq_fee SMALLINT,
    rq_nonce BIGINT,
    tx_type VARCHAR(40) NOT NULL,
@@ -667,16 +661,6 @@ CREATE TABLE account_creation_auth (
    timestamp TIMESTAMP WITHOUT TIME ZONE NOT NULL DEFAULT timezone('utc', now())
 );

-CREATE TABLE node_info (
-    item_id SERIAL PRIMARY KEY,
-    state BYTEA,            -- object returned by GET /state
-    config BYTEA,           -- Node config
-    -- max_pool_txs BIGINT,    -- L2DB config
-    -- min_fee NUMERIC,        -- L2DB config
-    constants BYTEA         -- info of the network that is constant
-);
-INSERT INTO node_info(item_id) VALUES (1); -- Always have a single row that we will update
-
 -- +migrate Down
 -- triggers
 DROP TRIGGER IF EXISTS trigger_token_usd_update ON token;
@@ -691,7 +675,6 @@ DROP FUNCTION IF EXISTS set_tx;
 DROP FUNCTION IF EXISTS forge_l1_user_txs;
 DROP FUNCTION IF EXISTS set_pool_tx;
 -- drop tables IF EXISTS
-DROP TABLE IF EXISTS node_info;
 DROP TABLE IF EXISTS account_creation_auth;
 DROP TABLE IF EXISTS tx_pool;
 DROP TABLE IF EXISTS auction_vars;
--- a/db/statedb/statedb.go
+++ b/db/statedb/statedb.go
@@ -17,8 +17,7 @@ import (
 var (
 	// ErrStateDBWithoutMT is used when a method that requires a MerkleTree
 	// is called in a StateDB that does not have a MerkleTree defined
-	ErrStateDBWithoutMT = errors.New(
-		"Can not call method to use MerkleTree in a StateDB without MerkleTree")
+	ErrStateDBWithoutMT = errors.New("Can not call method to use MerkleTree in a StateDB without MerkleTree")

 	// ErrAccountAlreadyExists is used when CreateAccount is called and the
 	// Account already exists
@@ -29,8 +28,7 @@ var (
 	ErrIdxNotFound = errors.New("Idx can not be found")
 	// ErrGetIdxNoCase is used when trying to get the Idx from EthAddr &
 	// BJJ with not compatible combination
-	ErrGetIdxNoCase = errors.New(
-		"Can not get Idx due unexpected combination of ethereum Address & BabyJubJub PublicKey")
+	ErrGetIdxNoCase = errors.New("Can not get Idx due unexpected combination of ethereum Address & BabyJubJub PublicKey")

 	// PrefixKeyIdx is the key prefix for idx in the db
 	PrefixKeyIdx = []byte("i:")
@@ -146,8 +144,7 @@ func NewStateDB(cfg Config) (*StateDB, error) {
 		}
 	}
 	if cfg.Type == TypeTxSelector && cfg.NLevels != 0 {
-		return nil, tracerr.Wrap(
-			fmt.Errorf("invalid StateDB parameters: StateDB type==TypeStateDB can not have nLevels!=0"))
+		return nil, tracerr.Wrap(fmt.Errorf("invalid StateDB parameters: StateDB type==TypeStateDB can not have nLevels!=0"))
 	}

 	return &StateDB{
@@ -350,8 +347,7 @@ func GetAccountInTreeDB(sto db.Storage, idx common.Idx) (*common.Account, error)
 // CreateAccount creates a new Account in the StateDB for the given Idx.  If
 // StateDB.MT==nil, MerkleTree is not affected, otherwise updates the
 // MerkleTree, returning a CircomProcessorProof.
-func (s *StateDB) CreateAccount(idx common.Idx, account *common.Account) (
-	*merkletree.CircomProcessorProof, error) {
+func (s *StateDB) CreateAccount(idx common.Idx, account *common.Account) (*merkletree.CircomProcessorProof, error) {
 	cpp, err := CreateAccountInTreeDB(s.db.DB(), s.MT, idx, account)
 	if err != nil {
 		return cpp, tracerr.Wrap(err)
@@ -365,8 +361,7 @@ func (s *StateDB) CreateAccount(idx common.Idx, account *common.Account) (
 // from ExitTree.  Creates a new Account in the StateDB for the given Idx.  If
 // StateDB.MT==nil, MerkleTree is not affected, otherwise updates the
 // MerkleTree, returning a CircomProcessorProof.
-func CreateAccountInTreeDB(sto db.Storage, mt *merkletree.MerkleTree, idx common.Idx,
-	account *common.Account) (*merkletree.CircomProcessorProof, error) {
+func CreateAccountInTreeDB(sto db.Storage, mt *merkletree.MerkleTree, idx common.Idx, account *common.Account) (*merkletree.CircomProcessorProof, error) {
 	// store at the DB the key: v, and value: leaf.Bytes()
 	v, err := account.HashValue()
 	if err != nil {
@@ -415,8 +410,7 @@ func CreateAccountInTreeDB(sto db.Storage, mt *merkletree.MerkleTree, idx common
 // UpdateAccount updates the Account in the StateDB for the given Idx.  If
 // StateDB.mt==nil, MerkleTree is not affected, otherwise updates the
 // MerkleTree, returning a CircomProcessorProof.
-func (s *StateDB) UpdateAccount(idx common.Idx, account *common.Account) (
-	*merkletree.CircomProcessorProof, error) {
+func (s *StateDB) UpdateAccount(idx common.Idx, account *common.Account) (*merkletree.CircomProcessorProof, error) {
 	return UpdateAccountInTreeDB(s.db.DB(), s.MT, idx, account)
 }

@@ -424,8 +418,7 @@ func (s *StateDB) UpdateAccount(idx common.Idx, account *common.Account) (
 // from ExitTree.  Updates the Account in the StateDB for the given Idx.  If
 // StateDB.mt==nil, MerkleTree is not affected, otherwise updates the
 // MerkleTree, returning a CircomProcessorProof.
-func UpdateAccountInTreeDB(sto db.Storage, mt *merkletree.MerkleTree, idx common.Idx,
-	account *common.Account) (*merkletree.CircomProcessorProof, error) {
+func UpdateAccountInTreeDB(sto db.Storage, mt *merkletree.MerkleTree, idx common.Idx, account *common.Account) (*merkletree.CircomProcessorProof, error) {
 	// store at the DB the key: v, and value: account.Bytes()
 	v, err := account.HashValue()
 	if err != nil {
@@ -510,7 +503,7 @@ func (l *LocalStateDB) CheckpointExists(batchNum common.BatchNum) (bool, error)
 	return l.db.CheckpointExists(batchNum)
 }

-// Reset performs a reset in the LocalStateDB. If fromSynchronizer is true, it
+// Reset performs a reset in the LocaStateDB. If fromSynchronizer is true, it
 // gets the state from LocalStateDB.synchronizerStateDB for the given batchNum.
 // If fromSynchronizer is false, get the state from LocalStateDB checkpoints.
 func (l *LocalStateDB) Reset(batchNum common.BatchNum, fromSynchronizer bool) error {
--- a/db/statedb/statedb_test.go
+++ b/db/statedb/statedb_test.go
@@ -22,8 +22,7 @@ import (

 func newAccount(t *testing.T, i int) *common.Account {
 	var sk babyjub.PrivateKey
-	_, err := hex.Decode(sk[:],
-		[]byte("0001020304050607080900010203040506070809000102030405060708090001"))
+	_, err := hex.Decode(sk[:], []byte("0001020304050607080900010203040506070809000102030405060708090001"))
 	require.NoError(t, err)
 	pk := sk.Public()

@@ -372,8 +371,7 @@ func TestCheckpoints(t *testing.T) {
 	dirLocal, err := ioutil.TempDir("", "ldb")
 	require.NoError(t, err)
 	defer require.NoError(t, os.RemoveAll(dirLocal))
-	ldb, err := NewLocalStateDB(Config{Path: dirLocal, Keep: 128, Type: TypeBatchBuilder,
-		NLevels: 32}, sdb)
+	ldb, err := NewLocalStateDB(Config{Path: dirLocal, Keep: 128, Type: TypeBatchBuilder, NLevels: 32}, sdb)
 	require.NoError(t, err)

 	// get checkpoint 4 from sdb (StateDB) to ldb (LocalStateDB)
@@ -394,8 +392,7 @@ func TestCheckpoints(t *testing.T) {
 	dirLocal2, err := ioutil.TempDir("", "ldb2")
 	require.NoError(t, err)
 	defer require.NoError(t, os.RemoveAll(dirLocal2))
-	ldb2, err := NewLocalStateDB(Config{Path: dirLocal2, Keep: 128, Type: TypeBatchBuilder,
-		NLevels: 32}, sdb)
+	ldb2, err := NewLocalStateDB(Config{Path: dirLocal2, Keep: 128, Type: TypeBatchBuilder, NLevels: 32}, sdb)
 	require.NoError(t, err)

 	// get checkpoint 4 from sdb (StateDB) to ldb (LocalStateDB)
@@ -474,8 +471,7 @@ func TestCheckAccountsTreeTestVectors(t *testing.T) {

 	ay0 := new(big.Int).Sub(new(big.Int).Exp(big.NewInt(2), big.NewInt(253), nil), big.NewInt(1))
 	// test value from js version (compatibility-canary)
-	assert.Equal(t, "1fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
-		(hex.EncodeToString(ay0.Bytes())))
+	assert.Equal(t, "1fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", (hex.EncodeToString(ay0.Bytes())))
 	bjjPoint0Comp := babyjub.PackSignY(true, ay0)
 	bjj0 := babyjub.PublicKeyComp(bjjPoint0Comp)

@@ -534,9 +530,7 @@ func TestCheckAccountsTreeTestVectors(t *testing.T) {
 		require.NoError(t, err)
 	}
 	// root value generated by js version:
-	assert.Equal(t,
-		"13174362770971232417413036794215823584762073355951212910715422236001731746065",
-		sdb.MT.Root().BigInt().String())
+	assert.Equal(t, "17298264051379321456969039521810887093935433569451713402227686942080129181291", sdb.MT.Root().BigInt().String())
 }

 // TestListCheckpoints performs almost the same test than kvdb/kvdb_test.go
--- a/db/statedb/utils.go
+++ b/db/statedb/utils.go
@@ -18,8 +18,7 @@ func concatEthAddrTokenID(addr ethCommon.Address, tokenID common.TokenID) []byte
 	b = append(b[:], tokenID.Bytes()[:]...)
 	return b
 }
-func concatEthAddrBJJTokenID(addr ethCommon.Address, pk babyjub.PublicKeyComp,
-	tokenID common.TokenID) []byte {
+func concatEthAddrBJJTokenID(addr ethCommon.Address, pk babyjub.PublicKeyComp, tokenID common.TokenID) []byte {
 	pkComp := pk
 	var b []byte
 	b = append(b, addr.Bytes()...)
@@ -33,8 +32,7 @@ func concatEthAddrBJJTokenID(addr ethCommon.Address, pk babyjub.PublicKeyComp,
 // - key: EthAddr & BabyJubJub PublicKey Compressed, value: idx
 // If Idx already exist for the given EthAddr & BJJ, the remaining Idx will be
 // always the smallest one.
-func (s *StateDB) setIdxByEthAddrBJJ(idx common.Idx, addr ethCommon.Address,
-	pk babyjub.PublicKeyComp, tokenID common.TokenID) error {
+func (s *StateDB) setIdxByEthAddrBJJ(idx common.Idx, addr ethCommon.Address, pk babyjub.PublicKeyComp, tokenID common.TokenID) error {
 	oldIdx, err := s.GetIdxByEthAddrBJJ(addr, pk, tokenID)
 	if err == nil {
 		// EthAddr & BJJ already have an Idx
@@ -42,8 +40,7 @@ func (s *StateDB) setIdxByEthAddrBJJ(idx common.Idx, addr ethCommon.Address,
 		// if new idx is smaller, store the new one
 		// if new idx is bigger, don't store and return, as the used one will be the old
 		if idx >= oldIdx {
-			log.Debug("StateDB.setIdxByEthAddrBJJ: Idx not stored because there " +
-				"already exist a smaller Idx for the given EthAddr & BJJ")
+			log.Debug("StateDB.setIdxByEthAddrBJJ: Idx not stored because there already exist a smaller Idx for the given EthAddr & BJJ")
 			return nil
 		}
 	}
@@ -83,8 +80,7 @@ func (s *StateDB) setIdxByEthAddrBJJ(idx common.Idx, addr ethCommon.Address,
 // GetIdxByEthAddr returns the smallest Idx in the StateDB for the given
 // Ethereum Address. Will return common.Idx(0) and error in case that Idx is
 // not found in the StateDB.
-func (s *StateDB) GetIdxByEthAddr(addr ethCommon.Address, tokenID common.TokenID) (common.Idx,
-	error) {
+func (s *StateDB) GetIdxByEthAddr(addr ethCommon.Address, tokenID common.TokenID) (common.Idx, error) {
 	k := concatEthAddrTokenID(addr, tokenID)
 	b, err := s.db.DB().Get(append(PrefixKeyAddr, k...))
 	if err != nil {
@@ -120,22 +116,18 @@ func (s *StateDB) GetIdxByEthAddrBJJ(addr ethCommon.Address, pk babyjub.PublicKe
 			return common.Idx(0), tracerr.Wrap(ErrIdxNotFound)
 		} else if err != nil {
 			return common.Idx(0),
-				tracerr.Wrap(fmt.Errorf("GetIdxByEthAddrBJJ: %s: ToEthAddr: %s, ToBJJ: %s, TokenID: %d",
-					ErrIdxNotFound, addr.Hex(), pk, tokenID))
+				tracerr.Wrap(fmt.Errorf("GetIdxByEthAddrBJJ: %s: ToEthAddr: %s, ToBJJ: %s, TokenID: %d", ErrIdxNotFound, addr.Hex(), pk, tokenID))
 		}
 		idx, err := common.IdxFromBytes(b)
 		if err != nil {
 			return common.Idx(0),
-				tracerr.Wrap(fmt.Errorf("GetIdxByEthAddrBJJ: %s: ToEthAddr: %s, ToBJJ: %s, TokenID: %d",
-					err, addr.Hex(), pk, tokenID))
+				tracerr.Wrap(fmt.Errorf("GetIdxByEthAddrBJJ: %s: ToEthAddr: %s, ToBJJ: %s, TokenID: %d", err, addr.Hex(), pk, tokenID))
 		}
 		return idx, nil
 	}
 	// rest of cases (included case ToEthAddr==0) are not possible
 	return common.Idx(0),
-		tracerr.Wrap(
-			fmt.Errorf("GetIdxByEthAddrBJJ: Not found, %s: ToEthAddr: %s, ToBJJ: %s, TokenID: %d",
-				ErrGetIdxNoCase, addr.Hex(), pk, tokenID))
+		tracerr.Wrap(fmt.Errorf("GetIdxByEthAddrBJJ: Not found, %s: ToEthAddr: %s, ToBJJ: %s, TokenID: %d", ErrGetIdxNoCase, addr.Hex(), pk, tokenID))
 }

 // GetTokenIDsFromIdxs returns a map containing the common.TokenID with its
@@ -145,9 +137,7 @@ func (s *StateDB) GetTokenIDsFromIdxs(idxs []common.Idx) (map[common.TokenID]com
 	for i := 0; i < len(idxs); i++ {
 		a, err := s.GetAccount(idxs[i])
 		if err != nil {
-			return nil,
-				tracerr.Wrap(fmt.Errorf("GetTokenIDsFromIdxs error on GetAccount with Idx==%d: %s",
-					idxs[i], err.Error()))
+			return nil, tracerr.Wrap(fmt.Errorf("GetTokenIDsFromIdxs error on GetAccount with Idx==%d: %s", idxs[i], err.Error()))
 		}
 		m[a.TokenID] = idxs[i]
 	}
--- a/db/utils.go
+++ b/db/utils.go
@@ -13,9 +13,6 @@ import (
 	"github.com/hermeznetwork/hermez-node/log"
 	"github.com/hermeznetwork/tracerr"
 	"github.com/jmoiron/sqlx"
-
-	//nolint:errcheck // driver for postgres DB
-	_ "github.com/lib/pq"
 	migrate "github.com/rubenv/sql-migrate"
 	"github.com/russross/meddler"
 	"golang.org/x/sync/semaphore"
@@ -96,8 +93,8 @@ type APIConnectionController struct {
 	timeout time.Duration
 }

-// NewAPIConnectionController initialize APIConnectionController
-func NewAPIConnectionController(maxConnections int, timeout time.Duration) *APIConnectionController {
+// NewAPICnnectionController initialize APIConnectionController
+func NewAPICnnectionController(maxConnections int, timeout time.Duration) *APIConnectionController {
 	return &APIConnectionController{
 		smphr:   semaphore.NewWeighted(int64(maxConnections)),
 		timeout: timeout,
@@ -168,11 +165,7 @@ func (b BigIntMeddler) PostRead(fieldPtr, scanTarget interface{}) error {
 		return tracerr.Wrap(fmt.Errorf("BigIntMeddler.PostRead: nil pointer"))
 	}
 	field := fieldPtr.(**big.Int)
-	var ok bool
-	*field, ok = new(big.Int).SetString(*ptr, 10)
-	if !ok {
-		return tracerr.Wrap(fmt.Errorf("big.Int.SetString failed on \"%v\"", *ptr))
-	}
+	*field = new(big.Int).SetBytes([]byte(*ptr))
 	return nil
 }

@@ -180,7 +173,7 @@ func (b BigIntMeddler) PostRead(fieldPtr, scanTarget interface{}) error {
 func (b BigIntMeddler) PreWrite(fieldPtr interface{}) (saveValue interface{}, err error) {
 	field := fieldPtr.(*big.Int)

-	return field.String(), nil
+	return field.Bytes(), nil
 }

 // BigIntNullMeddler encodes or decodes the field value to or from JSON
@@ -205,12 +198,7 @@ func (b BigIntNullMeddler) PostRead(fieldPtr, scanTarget interface{}) error {
 	if ptr == nil {
 		return tracerr.Wrap(fmt.Errorf("BigIntMeddler.PostRead: nil pointer"))
 	}
-	var ok bool
-	*field, ok = new(big.Int).SetString(string(ptr), 10)
-	if !ok {
-		return tracerr.Wrap(fmt.Errorf("big.Int.SetString failed on \"%v\"", string(ptr)))
-	}
-
+	*field = new(big.Int).SetBytes(ptr)
 	return nil
 }

@@ -220,7 +208,7 @@ func (b BigIntNullMeddler) PreWrite(fieldPtr interface{}) (saveValue interface{}
 	if field == nil {
 		return nil, nil
 	}
-	return field.String(), nil
+	return field.Bytes(), nil
 }

 // SliceToSlicePtrs converts any []Foo to []*Foo
--- a/db/utils_test.go
+++ b/db/utils_test.go
@@ -1,13 +1,9 @@
 package db

 import (
-	"math/big"
-	"os"
 	"testing"

-	"github.com/russross/meddler"
 	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
 )

 type foo struct {
@@ -37,42 +33,3 @@ func TestSlicePtrsToSlice(t *testing.T) {
 		assert.Equal(t, *a[i], b[i])
 	}
 }
-
-func TestBigInt(t *testing.T) {
-	pass := os.Getenv("POSTGRES_PASS")
-	db, err := InitSQLDB(5432, "localhost", "hermez", pass, "hermez")
-	require.NoError(t, err)
-	defer func() {
-		_, err := db.Exec("DROP TABLE IF EXISTS test_big_int;")
-		require.NoError(t, err)
-		err = db.Close()
-		require.NoError(t, err)
-	}()
-
-	_, err = db.Exec("DROP TABLE IF EXISTS test_big_int;")
-	require.NoError(t, err)
-
-	_, err = db.Exec(`CREATE TABLE test_big_int (
-		item_id SERIAL PRIMARY KEY,
-		value1 DECIMAL(78, 0) NOT NULL,
-		value2 DECIMAL(78, 0),
-		value3 DECIMAL(78, 0)
-	);`)
-	require.NoError(t, err)
-
-	type Entry struct {
-		ItemID int      `meddler:"item_id"`
-		Value1 *big.Int `meddler:"value1,bigint"`
-		Value2 *big.Int `meddler:"value2,bigintnull"`
-		Value3 *big.Int `meddler:"value3,bigintnull"`
-	}
-
-	entry := Entry{ItemID: 1, Value1: big.NewInt(1234567890), Value2: big.NewInt(9876543210), Value3: nil}
-	err = meddler.Insert(db, "test_big_int", &entry)
-	require.NoError(t, err)
-
-	var dbEntry Entry
-	err = meddler.QueryRow(db, &dbEntry, "SELECT * FROM test_big_int WHERE item_id = 1;")
-	require.NoError(t, err)
-	assert.Equal(t, entry, dbEntry)
-}
--- a/eth/auction.go
+++ b/eth/auction.go
@@ -70,8 +70,7 @@ type AuctionEventInitialize struct {
 }

 // AuctionVariables returns the AuctionVariables from the initialize event
-func (ei *AuctionEventInitialize) AuctionVariables(
-	InitialMinimalBidding *big.Int) *common.AuctionVariables {
+func (ei *AuctionEventInitialize) AuctionVariables(InitialMinimalBidding *big.Int) *common.AuctionVariables {
 	return &common.AuctionVariables{
 		EthBlockNum:        0,
 		DonationAddress:    ei.DonationAddress,
@@ -223,15 +222,12 @@ type AuctionInterface interface {
 	AuctionGetAllocationRatio() ([3]uint16, error)
 	AuctionSetDonationAddress(newDonationAddress ethCommon.Address) (*types.Transaction, error)
 	AuctionGetDonationAddress() (*ethCommon.Address, error)
-	AuctionSetBootCoordinator(newBootCoordinator ethCommon.Address,
-		newBootCoordinatorURL string) (*types.Transaction, error)
+	AuctionSetBootCoordinator(newBootCoordinator ethCommon.Address, newBootCoordinatorURL string) (*types.Transaction, error)
 	AuctionGetBootCoordinator() (*ethCommon.Address, error)
-	AuctionChangeDefaultSlotSetBid(slotSet int64,
-		newInitialMinBid *big.Int) (*types.Transaction, error)
+	AuctionChangeDefaultSlotSetBid(slotSet int64, newInitialMinBid *big.Int) (*types.Transaction, error)

 	// Coordinator Management
-	AuctionSetCoordinator(forger ethCommon.Address, coordinatorURL string) (*types.Transaction,
-		error)
+	AuctionSetCoordinator(forger ethCommon.Address, coordinatorURL string) (*types.Transaction, error)

 	// Slot Info
 	AuctionGetSlotNumber(blockNum int64) (int64, error)
@@ -241,8 +237,7 @@ type AuctionInterface interface {
 	AuctionGetSlotSet(slot int64) (*big.Int, error)

 	// Bidding
-	AuctionBid(amount *big.Int, slot int64, bidAmount *big.Int, deadline *big.Int) (
-		tx *types.Transaction, err error)
+	AuctionBid(amount *big.Int, slot int64, bidAmount *big.Int, deadline *big.Int) (tx *types.Transaction, err error)
 	AuctionMultiBid(amount *big.Int, startingSlot, endingSlot int64, slotSets [6]bool,
 		maxBid, minBid, deadline *big.Int) (tx *types.Transaction, err error)

@@ -280,10 +275,8 @@ type AuctionClient struct {
 }

 // NewAuctionClient creates a new AuctionClient.  `tokenAddress` is the address of the HEZ tokens.
-func NewAuctionClient(client *EthereumClient, address ethCommon.Address,
-	tokenHEZCfg TokenConfig) (*AuctionClient, error) {
-	contractAbi, err :=
-		abi.JSON(strings.NewReader(string(HermezAuctionProtocol.HermezAuctionProtocolABI)))
+func NewAuctionClient(client *EthereumClient, address ethCommon.Address, tokenHEZCfg TokenConfig) (*AuctionClient, error) {
+	contractAbi, err := abi.JSON(strings.NewReader(string(HermezAuctionProtocol.HermezAuctionProtocolABI)))
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
@@ -338,8 +331,7 @@ func (c *AuctionClient) AuctionGetSlotDeadline() (slotDeadline uint8, err error)
 }

 // AuctionSetOpenAuctionSlots is the interface to call the smart contract function
-func (c *AuctionClient) AuctionSetOpenAuctionSlots(
-	newOpenAuctionSlots uint16) (tx *types.Transaction, err error) {
+func (c *AuctionClient) AuctionSetOpenAuctionSlots(newOpenAuctionSlots uint16) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -363,8 +355,7 @@ func (c *AuctionClient) AuctionGetOpenAuctionSlots() (openAuctionSlots uint16, e
 }

 // AuctionSetClosedAuctionSlots is the interface to call the smart contract function
-func (c *AuctionClient) AuctionSetClosedAuctionSlots(
-	newClosedAuctionSlots uint16) (tx *types.Transaction, err error) {
+func (c *AuctionClient) AuctionSetClosedAuctionSlots(newClosedAuctionSlots uint16) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -388,8 +379,7 @@ func (c *AuctionClient) AuctionGetClosedAuctionSlots() (closedAuctionSlots uint1
 }

 // AuctionSetOutbidding is the interface to call the smart contract function
-func (c *AuctionClient) AuctionSetOutbidding(newOutbidding uint16) (tx *types.Transaction,
-	err error) {
+func (c *AuctionClient) AuctionSetOutbidding(newOutbidding uint16) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		12500000, //nolint:gomnd
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -413,8 +403,7 @@ func (c *AuctionClient) AuctionGetOutbidding() (outbidding uint16, err error) {
 }

 // AuctionSetAllocationRatio is the interface to call the smart contract function
-func (c *AuctionClient) AuctionSetAllocationRatio(
-	newAllocationRatio [3]uint16) (tx *types.Transaction, err error) {
+func (c *AuctionClient) AuctionSetAllocationRatio(newAllocationRatio [3]uint16) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -438,8 +427,7 @@ func (c *AuctionClient) AuctionGetAllocationRatio() (allocationRation [3]uint16,
 }

 // AuctionSetDonationAddress is the interface to call the smart contract function
-func (c *AuctionClient) AuctionSetDonationAddress(
-	newDonationAddress ethCommon.Address) (tx *types.Transaction, err error) {
+func (c *AuctionClient) AuctionSetDonationAddress(newDonationAddress ethCommon.Address) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -452,8 +440,7 @@ func (c *AuctionClient) AuctionSetDonationAddress(
 }

 // AuctionGetDonationAddress is the interface to call the smart contract function
-func (c *AuctionClient) AuctionGetDonationAddress() (donationAddress *ethCommon.Address,
-	err error) {
+func (c *AuctionClient) AuctionGetDonationAddress() (donationAddress *ethCommon.Address, err error) {
 	var _donationAddress ethCommon.Address
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_donationAddress, err = c.auction.GetDonationAddress(c.opts)
@@ -465,13 +452,11 @@ func (c *AuctionClient) AuctionGetDonationAddress() (donationAddress *ethCommon.
 }

 // AuctionSetBootCoordinator is the interface to call the smart contract function
-func (c *AuctionClient) AuctionSetBootCoordinator(newBootCoordinator ethCommon.Address,
-	newBootCoordinatorURL string) (tx *types.Transaction, err error) {
+func (c *AuctionClient) AuctionSetBootCoordinator(newBootCoordinator ethCommon.Address, newBootCoordinatorURL string) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
-			return c.auction.SetBootCoordinator(auth, newBootCoordinator,
-				newBootCoordinatorURL)
+			return c.auction.SetBootCoordinator(auth, newBootCoordinator, newBootCoordinatorURL)
 		},
 	); err != nil {
 		return nil, tracerr.Wrap(fmt.Errorf("Failed setting bootCoordinator: %w", err))
@@ -480,8 +465,7 @@ func (c *AuctionClient) AuctionSetBootCoordinator(newBootCoordinator ethCommon.A
 }

 // AuctionGetBootCoordinator is the interface to call the smart contract function
-func (c *AuctionClient) AuctionGetBootCoordinator() (bootCoordinator *ethCommon.Address,
-	err error) {
+func (c *AuctionClient) AuctionGetBootCoordinator() (bootCoordinator *ethCommon.Address, err error) {
 	var _bootCoordinator ethCommon.Address
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_bootCoordinator, err = c.auction.GetBootCoordinator(c.opts)
@@ -493,8 +477,7 @@ func (c *AuctionClient) AuctionGetBootCoordinator() (bootCoordinator *ethCommon.
 }

 // AuctionChangeDefaultSlotSetBid is the interface to call the smart contract function
-func (c *AuctionClient) AuctionChangeDefaultSlotSetBid(slotSet int64,
-	newInitialMinBid *big.Int) (tx *types.Transaction, err error) {
+func (c *AuctionClient) AuctionChangeDefaultSlotSetBid(slotSet int64, newInitialMinBid *big.Int) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -508,8 +491,7 @@ func (c *AuctionClient) AuctionChangeDefaultSlotSetBid(slotSet int64,
 }

 // AuctionGetClaimableHEZ is the interface to call the smart contract function
-func (c *AuctionClient) AuctionGetClaimableHEZ(
-	claimAddress ethCommon.Address) (claimableHEZ *big.Int, err error) {
+func (c *AuctionClient) AuctionGetClaimableHEZ(claimAddress ethCommon.Address) (claimableHEZ *big.Int, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		claimableHEZ, err = c.auction.GetClaimableHEZ(c.opts, claimAddress)
 		return tracerr.Wrap(err)
@@ -520,8 +502,7 @@ func (c *AuctionClient) AuctionGetClaimableHEZ(
 }

 // AuctionSetCoordinator is the interface to call the smart contract function
-func (c *AuctionClient) AuctionSetCoordinator(forger ethCommon.Address,
-	coordinatorURL string) (tx *types.Transaction, err error) {
+func (c *AuctionClient) AuctionSetCoordinator(forger ethCommon.Address, coordinatorURL string) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -570,8 +551,7 @@ func (c *AuctionClient) AuctionGetSlotSet(slot int64) (slotSet *big.Int, err err
 }

 // AuctionGetDefaultSlotSetBid is the interface to call the smart contract function
-func (c *AuctionClient) AuctionGetDefaultSlotSetBid(slotSet uint8) (minBidSlotSet *big.Int,
-	err error) {
+func (c *AuctionClient) AuctionGetDefaultSlotSetBid(slotSet uint8) (minBidSlotSet *big.Int, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		minBidSlotSet, err = c.auction.GetDefaultSlotSetBid(c.opts, slotSet)
 		return tracerr.Wrap(err)
@@ -594,8 +574,7 @@ func (c *AuctionClient) AuctionGetSlotNumber(blockNum int64) (slot int64, err er
 }

 // AuctionBid is the interface to call the smart contract function
-func (c *AuctionClient) AuctionBid(amount *big.Int, slot int64, bidAmount *big.Int,
-	deadline *big.Int) (tx *types.Transaction, err error) {
+func (c *AuctionClient) AuctionBid(amount *big.Int, slot int64, bidAmount *big.Int, deadline *big.Int) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -607,8 +586,7 @@ func (c *AuctionClient) AuctionBid(amount *big.Int, slot int64, bidAmount *big.I
 			}
 			tokenName := c.tokenHEZCfg.Name
 			tokenAddr := c.tokenHEZCfg.Address
-			digest, _ := createPermitDigest(tokenAddr, owner, spender, c.chainID,
-				amount, nonce, deadline, tokenName)
+			digest, _ := createPermitDigest(tokenAddr, owner, spender, c.chainID, amount, nonce, deadline, tokenName)
 			signature, _ := c.client.ks.SignHash(*c.client.account, digest)
 			permit := createPermit(owner, spender, amount, deadline, digest, signature)
 			_slot := big.NewInt(slot)
@@ -621,8 +599,8 @@ func (c *AuctionClient) AuctionBid(amount *big.Int, slot int64, bidAmount *big.I
 }

 // AuctionMultiBid is the interface to call the smart contract function
-func (c *AuctionClient) AuctionMultiBid(amount *big.Int, startingSlot, endingSlot int64,
-	slotSets [6]bool, maxBid, minBid, deadline *big.Int) (tx *types.Transaction, err error) {
+func (c *AuctionClient) AuctionMultiBid(amount *big.Int, startingSlot, endingSlot int64, slotSets [6]bool,
+	maxBid, minBid, deadline *big.Int) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		1000000, //nolint:gomnd
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -635,14 +613,12 @@ func (c *AuctionClient) AuctionMultiBid(amount *big.Int, startingSlot, endingSlo
 			tokenName := c.tokenHEZCfg.Name
 			tokenAddr := c.tokenHEZCfg.Address

-			digest, _ := createPermitDigest(tokenAddr, owner, spender, c.chainID,
-				amount, nonce, deadline, tokenName)
+			digest, _ := createPermitDigest(tokenAddr, owner, spender, c.chainID, amount, nonce, deadline, tokenName)
 			signature, _ := c.client.ks.SignHash(*c.client.account, digest)
 			permit := createPermit(owner, spender, amount, deadline, digest, signature)
 			_startingSlot := big.NewInt(startingSlot)
 			_endingSlot := big.NewInt(endingSlot)
-			return c.auction.ProcessMultiBid(auth, amount, _startingSlot, _endingSlot,
-				slotSets, maxBid, minBid, permit)
+			return c.auction.ProcessMultiBid(auth, amount, _startingSlot, _endingSlot, slotSets, maxBid, minBid, permit)
 		},
 	); err != nil {
 		return nil, tracerr.Wrap(fmt.Errorf("Failed multibid: %w", err))
@@ -651,8 +627,7 @@ func (c *AuctionClient) AuctionMultiBid(amount *big.Int, startingSlot, endingSlo
 }

 // AuctionCanForge is the interface to call the smart contract function
-func (c *AuctionClient) AuctionCanForge(forger ethCommon.Address, blockNum int64) (canForge bool,
-	err error) {
+func (c *AuctionClient) AuctionCanForge(forger ethCommon.Address, blockNum int64) (canForge bool, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		canForge, err = c.auction.CanForge(c.opts, forger, big.NewInt(blockNum))
 		return tracerr.Wrap(err)
@@ -705,8 +680,7 @@ func (c *AuctionClient) AuctionConstants() (auctionConstants *common.AuctionCons
 		if err != nil {
 			return tracerr.Wrap(err)
 		}
-		auctionConstants.InitialMinimalBidding, err =
-			c.auction.INITIALMINIMALBIDDING(c.opts)
+		auctionConstants.InitialMinimalBidding, err = c.auction.INITIALMINIMALBIDDING(c.opts)
 		if err != nil {
 			return tracerr.Wrap(err)
 		}
@@ -777,35 +751,21 @@ func (c *AuctionClient) AuctionVariables() (auctionVariables *common.AuctionVari
 }

 var (
-	logAuctionNewBid = crypto.Keccak256Hash([]byte(
-		"NewBid(uint128,uint128,address)"))
-	logAuctionNewSlotDeadline = crypto.Keccak256Hash([]byte(
-		"NewSlotDeadline(uint8)"))
-	logAuctionNewClosedAuctionSlots = crypto.Keccak256Hash([]byte(
-		"NewClosedAuctionSlots(uint16)"))
-	logAuctionNewOutbidding = crypto.Keccak256Hash([]byte(
-		"NewOutbidding(uint16)"))
-	logAuctionNewDonationAddress = crypto.Keccak256Hash([]byte(
-		"NewDonationAddress(address)"))
-	logAuctionNewBootCoordinator = crypto.Keccak256Hash([]byte(
-		"NewBootCoordinator(address,string)"))
-	logAuctionNewOpenAuctionSlots = crypto.Keccak256Hash([]byte(
-		"NewOpenAuctionSlots(uint16)"))
-	logAuctionNewAllocationRatio = crypto.Keccak256Hash([]byte(
-		"NewAllocationRatio(uint16[3])"))
-	logAuctionSetCoordinator = crypto.Keccak256Hash([]byte(
-		"SetCoordinator(address,address,string)"))
-	logAuctionNewForgeAllocated = crypto.Keccak256Hash([]byte(
-		"NewForgeAllocated(address,address,uint128,uint128,uint128,uint128)"))
-	logAuctionNewDefaultSlotSetBid = crypto.Keccak256Hash([]byte(
-		"NewDefaultSlotSetBid(uint128,uint128)"))
-	logAuctionNewForge = crypto.Keccak256Hash([]byte(
-		"NewForge(address,uint128)"))
-	logAuctionHEZClaimed = crypto.Keccak256Hash([]byte(
-		"HEZClaimed(address,uint128)"))
-	logAuctionInitialize = crypto.Keccak256Hash([]byte(
-		"InitializeHermezAuctionProtocolEvent(address,address,string," +
-			"uint16,uint8,uint16,uint16,uint16[3])"))
+	logAuctionNewBid                = crypto.Keccak256Hash([]byte("NewBid(uint128,uint128,address)"))
+	logAuctionNewSlotDeadline       = crypto.Keccak256Hash([]byte("NewSlotDeadline(uint8)"))
+	logAuctionNewClosedAuctionSlots = crypto.Keccak256Hash([]byte("NewClosedAuctionSlots(uint16)"))
+	logAuctionNewOutbidding         = crypto.Keccak256Hash([]byte("NewOutbidding(uint16)"))
+	logAuctionNewDonationAddress    = crypto.Keccak256Hash([]byte("NewDonationAddress(address)"))
+	logAuctionNewBootCoordinator    = crypto.Keccak256Hash([]byte("NewBootCoordinator(address,string)"))
+	logAuctionNewOpenAuctionSlots   = crypto.Keccak256Hash([]byte("NewOpenAuctionSlots(uint16)"))
+	logAuctionNewAllocationRatio    = crypto.Keccak256Hash([]byte("NewAllocationRatio(uint16[3])"))
+	logAuctionSetCoordinator        = crypto.Keccak256Hash([]byte("SetCoordinator(address,address,string)"))
+	logAuctionNewForgeAllocated     = crypto.Keccak256Hash([]byte("NewForgeAllocated(address,address,uint128,uint128,uint128,uint128)"))
+	logAuctionNewDefaultSlotSetBid  = crypto.Keccak256Hash([]byte("NewDefaultSlotSetBid(uint128,uint128)"))
+	logAuctionNewForge              = crypto.Keccak256Hash([]byte("NewForge(address,uint128)"))
+	logAuctionHEZClaimed            = crypto.Keccak256Hash([]byte("HEZClaimed(address,uint128)"))
+	logAuctionInitialize            = crypto.Keccak256Hash([]byte(
+		"InitializeHermezAuctionProtocolEvent(address,address,string,uint16,uint8,uint16,uint16,uint16[3])"))
 )

 // AuctionEventInit returns the initialize event with its corresponding block number
@@ -821,8 +781,7 @@ func (c *AuctionClient) AuctionEventInit() (*AuctionEventInitialize, int64, erro
 		return nil, 0, tracerr.Wrap(err)
 	}
 	if len(logs) != 1 {
-		return nil, 0,
-			tracerr.Wrap(fmt.Errorf("no event of type InitializeHermezAuctionProtocolEvent found"))
+		return nil, 0, tracerr.Wrap(fmt.Errorf("no event of type InitializeHermezAuctionProtocolEvent found"))
 	}
 	vLog := logs[0]
 	if vLog.Topics[0] != logAuctionInitialize {
@@ -870,8 +829,7 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64,

 	for _, vLog := range logs {
 		if blockHash != nil && vLog.BlockHash != *blockHash {
-			log.Errorw("Block hash mismatch", "expected", blockHash.String(), "got",
-				vLog.BlockHash.String())
+			log.Errorw("Block hash mismatch", "expected", blockHash.String(), "got", vLog.BlockHash.String())
 			return nil, tracerr.Wrap(ErrBlockHashMismatchEvent)
 		}
 		switch vLog.Topics[0] {
@@ -882,8 +840,7 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64,
 				Address   ethCommon.Address
 			}
 			var newBid AuctionEventNewBid
-			if err := c.contractAbi.UnpackIntoInterface(&auxNewBid, "NewBid",
-				vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&auxNewBid, "NewBid", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
 			newBid.BidAmount = auxNewBid.BidAmount
@@ -892,60 +849,48 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64,
 			auctionEvents.NewBid = append(auctionEvents.NewBid, newBid)
 		case logAuctionNewSlotDeadline:
 			var newSlotDeadline AuctionEventNewSlotDeadline
-			if err := c.contractAbi.UnpackIntoInterface(&newSlotDeadline,
-				"NewSlotDeadline", vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&newSlotDeadline, "NewSlotDeadline", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
 			auctionEvents.NewSlotDeadline = append(auctionEvents.NewSlotDeadline, newSlotDeadline)
 		case logAuctionNewClosedAuctionSlots:
 			var newClosedAuctionSlots AuctionEventNewClosedAuctionSlots
-			if err := c.contractAbi.UnpackIntoInterface(&newClosedAuctionSlots,
-				"NewClosedAuctionSlots", vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&newClosedAuctionSlots, "NewClosedAuctionSlots", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
-			auctionEvents.NewClosedAuctionSlots =
-				append(auctionEvents.NewClosedAuctionSlots, newClosedAuctionSlots)
+			auctionEvents.NewClosedAuctionSlots = append(auctionEvents.NewClosedAuctionSlots, newClosedAuctionSlots)
 		case logAuctionNewOutbidding:
 			var newOutbidding AuctionEventNewOutbidding
-			if err := c.contractAbi.UnpackIntoInterface(&newOutbidding, "NewOutbidding",
-				vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&newOutbidding, "NewOutbidding", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
 			auctionEvents.NewOutbidding = append(auctionEvents.NewOutbidding, newOutbidding)
 		case logAuctionNewDonationAddress:
 			var newDonationAddress AuctionEventNewDonationAddress
 			newDonationAddress.NewDonationAddress = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
-			auctionEvents.NewDonationAddress = append(auctionEvents.NewDonationAddress,
-				newDonationAddress)
+			auctionEvents.NewDonationAddress = append(auctionEvents.NewDonationAddress, newDonationAddress)
 		case logAuctionNewBootCoordinator:
 			var newBootCoordinator AuctionEventNewBootCoordinator
-			if err := c.contractAbi.UnpackIntoInterface(&newBootCoordinator,
-				"NewBootCoordinator", vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&newBootCoordinator, "NewBootCoordinator", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
 			newBootCoordinator.NewBootCoordinator = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
-			auctionEvents.NewBootCoordinator = append(auctionEvents.NewBootCoordinator,
-				newBootCoordinator)
+			auctionEvents.NewBootCoordinator = append(auctionEvents.NewBootCoordinator, newBootCoordinator)
 		case logAuctionNewOpenAuctionSlots:
 			var newOpenAuctionSlots AuctionEventNewOpenAuctionSlots
-			if err := c.contractAbi.UnpackIntoInterface(&newOpenAuctionSlots,
-				"NewOpenAuctionSlots", vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&newOpenAuctionSlots, "NewOpenAuctionSlots", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
-			auctionEvents.NewOpenAuctionSlots =
-				append(auctionEvents.NewOpenAuctionSlots, newOpenAuctionSlots)
+			auctionEvents.NewOpenAuctionSlots = append(auctionEvents.NewOpenAuctionSlots, newOpenAuctionSlots)
 		case logAuctionNewAllocationRatio:
 			var newAllocationRatio AuctionEventNewAllocationRatio
-			if err := c.contractAbi.UnpackIntoInterface(&newAllocationRatio,
-				"NewAllocationRatio", vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&newAllocationRatio, "NewAllocationRatio", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
-			auctionEvents.NewAllocationRatio = append(auctionEvents.NewAllocationRatio,
-				newAllocationRatio)
+			auctionEvents.NewAllocationRatio = append(auctionEvents.NewAllocationRatio, newAllocationRatio)
 		case logAuctionSetCoordinator:
 			var setCoordinator AuctionEventSetCoordinator
-			if err := c.contractAbi.UnpackIntoInterface(&setCoordinator,
-				"SetCoordinator", vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&setCoordinator, "SetCoordinator", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
 			setCoordinator.BidderAddress = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
@@ -953,29 +898,25 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64,
 			auctionEvents.SetCoordinator = append(auctionEvents.SetCoordinator, setCoordinator)
 		case logAuctionNewForgeAllocated:
 			var newForgeAllocated AuctionEventNewForgeAllocated
-			if err := c.contractAbi.UnpackIntoInterface(&newForgeAllocated,
-				"NewForgeAllocated", vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&newForgeAllocated, "NewForgeAllocated", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
 			newForgeAllocated.Bidder = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
 			newForgeAllocated.Forger = ethCommon.BytesToAddress(vLog.Topics[2].Bytes())
 			newForgeAllocated.SlotToForge = new(big.Int).SetBytes(vLog.Topics[3][:]).Int64()
-			auctionEvents.NewForgeAllocated = append(auctionEvents.NewForgeAllocated,
-				newForgeAllocated)
+			auctionEvents.NewForgeAllocated = append(auctionEvents.NewForgeAllocated, newForgeAllocated)
 		case logAuctionNewDefaultSlotSetBid:
 			var auxNewDefaultSlotSetBid struct {
 				SlotSet          *big.Int
 				NewInitialMinBid *big.Int
 			}
 			var newDefaultSlotSetBid AuctionEventNewDefaultSlotSetBid
-			if err := c.contractAbi.UnpackIntoInterface(&auxNewDefaultSlotSetBid,
-				"NewDefaultSlotSetBid", vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&auxNewDefaultSlotSetBid, "NewDefaultSlotSetBid", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
 			newDefaultSlotSetBid.NewInitialMinBid = auxNewDefaultSlotSetBid.NewInitialMinBid
 			newDefaultSlotSetBid.SlotSet = auxNewDefaultSlotSetBid.SlotSet.Int64()
-			auctionEvents.NewDefaultSlotSetBid =
-				append(auctionEvents.NewDefaultSlotSetBid, newDefaultSlotSetBid)
+			auctionEvents.NewDefaultSlotSetBid = append(auctionEvents.NewDefaultSlotSetBid, newDefaultSlotSetBid)
 		case logAuctionNewForge:
 			var newForge AuctionEventNewForge
 			newForge.Forger = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
@@ -983,8 +924,7 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64,
 			auctionEvents.NewForge = append(auctionEvents.NewForge, newForge)
 		case logAuctionHEZClaimed:
 			var HEZClaimed AuctionEventHEZClaimed
-			if err := c.contractAbi.UnpackIntoInterface(&HEZClaimed, "HEZClaimed",
-				vLog.Data); err != nil {
+			if err := c.contractAbi.UnpackIntoInterface(&HEZClaimed, "HEZClaimed", vLog.Data); err != nil {
 				return nil, tracerr.Wrap(err)
 			}
 			HEZClaimed.Owner = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
--- a/eth/auction_test.go
+++ b/eth/auction_test.go
@@ -58,8 +58,7 @@ func TestAuctionConstants(t *testing.T) {
 func TestAuctionVariables(t *testing.T) {
 	INITMINBID := new(big.Int)
 	INITMINBID.SetString(minBidStr, 10)
-	defaultSlotSetBid := [6]*big.Int{INITMINBID, INITMINBID, INITMINBID, INITMINBID, INITMINBID,
-		INITMINBID}
+	defaultSlotSetBid := [6]*big.Int{INITMINBID, INITMINBID, INITMINBID, INITMINBID, INITMINBID, INITMINBID}

 	auctionVariables, err := auctionClientTest.AuctionVariables()
 	require.Nil(t, err)
@@ -133,8 +132,7 @@ func TestAuctionSetClosedAuctionSlots(t *testing.T) {
 	require.Nil(t, err)
 	auctionEvents, err := auctionClientTest.AuctionEventsByBlock(currentBlockNum, nil)
 	require.Nil(t, err)
-	assert.Equal(t, newClosedAuctionSlots,
-		auctionEvents.NewClosedAuctionSlots[0].NewClosedAuctionSlots)
+	assert.Equal(t, newClosedAuctionSlots, auctionEvents.NewClosedAuctionSlots[0].NewClosedAuctionSlots)
 	_, err = auctionClientTest.AuctionSetClosedAuctionSlots(closedAuctionSlots)
 	require.Nil(t, err)
 }
@@ -230,8 +228,7 @@ func TestAuctionSetBootCoordinator(t *testing.T) {
 	require.Nil(t, err)
 	assert.Equal(t, newBootCoordinator, auctionEvents.NewBootCoordinator[0].NewBootCoordinator)
 	assert.Equal(t, newBootCoordinatorURL, auctionEvents.NewBootCoordinator[0].NewBootCoordinatorURL)
-	_, err = auctionClientTest.AuctionSetBootCoordinator(bootCoordinatorAddressConst,
-		bootCoordinatorURL)
+	_, err = auctionClientTest.AuctionSetBootCoordinator(bootCoordinatorAddressConst, bootCoordinatorURL)
 	require.Nil(t, err)
 }

@@ -345,8 +342,7 @@ func TestAuctionMultiBid(t *testing.T) {
 	budget := new(big.Int)
 	budget.SetString("45200000000000000000", 10)
 	bidderAddress := governanceAddressConst
-	_, err = auctionClientTest.AuctionMultiBid(budget, currentSlot+4, currentSlot+10, slotSet,
-		maxBid, minBid, deadline)
+	_, err = auctionClientTest.AuctionMultiBid(budget, currentSlot+4, currentSlot+10, slotSet, maxBid, minBid, deadline)
 	require.Nil(t, err)
 	currentBlockNum, err := auctionClientTest.client.EthLastBlock()
 	require.Nil(t, err)
@@ -387,8 +383,7 @@ func TestAuctionClaimHEZ(t *testing.T) {
 }

 func TestAuctionForge(t *testing.T) {
-	auctionClientTestHermez, err := NewAuctionClient(ethereumClientHermez,
-		auctionTestAddressConst, tokenHEZ)
+	auctionClientTestHermez, err := NewAuctionClient(ethereumClientHermez, auctionTestAddressConst, tokenHEZ)
 	require.Nil(t, err)
 	slotConst := 4
 	blockNum := int64(int(blocksPerSlot)*slotConst + int(genesisBlock))
--- a/eth/client.go
+++ b/eth/client.go
@@ -64,19 +64,16 @@ type ClientConfig struct {
 }

 // NewClient creates a new Client to interact with Ethereum and the Hermez smart contracts.
-func NewClient(client *ethclient.Client, account *accounts.Account, ks *ethKeystore.KeyStore,
-	cfg *ClientConfig) (*Client, error) {
+func NewClient(client *ethclient.Client, account *accounts.Account, ks *ethKeystore.KeyStore, cfg *ClientConfig) (*Client, error) {
 	ethereumClient, err := NewEthereumClient(client, account, ks, &cfg.Ethereum)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	auctionClient, err := NewAuctionClient(ethereumClient, cfg.Auction.Address,
-		cfg.Auction.TokenHEZ)
+	auctionClient, err := NewAuctionClient(ethereumClient, cfg.Auction.Address, cfg.Auction.TokenHEZ)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
-	rollupClient, err := NewRollupClient(ethereumClient, cfg.Rollup.Address,
-		cfg.Auction.TokenHEZ)
+	rollupClient, err := NewRollupClient(ethereumClient, cfg.Rollup.Address, cfg.Auction.TokenHEZ)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
--- a/eth/contracts/auction/HermezAuctionProtocol.go
+++ b/eth/contracts/auction/HermezAuctionProtocol.go
@@ -309,12 +309,9 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) Coordinators(opts *bi
 		Forger         common.Address
 		CoordinatorURL string
 	})
-	if err != nil {
-		return *outstruct, err
-	}

-	outstruct.Forger = *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
-	outstruct.CoordinatorURL = *abi.ConvertType(out[1], new(string)).(*string)
+	outstruct.Forger = out[0].(common.Address)
+	outstruct.CoordinatorURL = out[1].(string)

 	return *outstruct, err

@@ -887,15 +884,12 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) Slots(opts *bind.Call
 		BidAmount        *big.Int
 		ClosedMinBid     *big.Int
 	})
-	if err != nil {
-		return *outstruct, err
-	}

-	outstruct.Bidder = *abi.ConvertType(out[0], new(common.Address)).(*common.Address)
-	outstruct.Fulfilled = *abi.ConvertType(out[1], new(bool)).(*bool)
-	outstruct.ForgerCommitment = *abi.ConvertType(out[2], new(bool)).(*bool)
-	outstruct.BidAmount = *abi.ConvertType(out[3], new(*big.Int)).(**big.Int)
-	outstruct.ClosedMinBid = *abi.ConvertType(out[4], new(*big.Int)).(**big.Int)
+	outstruct.Bidder = out[0].(common.Address)
+	outstruct.Fulfilled = out[1].(bool)
+	outstruct.ForgerCommitment = out[2].(bool)
+	outstruct.BidAmount = out[3].(*big.Int)
+	outstruct.ClosedMinBid = out[4].(*big.Int)

 	return *outstruct, err

--- a/eth/contracts/hermez/Hermez.go
+++ b/eth/contracts/hermez/Hermez.go
--- a/eth/contracts/withdrawdelayer/WithdrawalDelayer.go
+++ b/eth/contracts/withdrawdelayer/WithdrawalDelayer.go
--- a/eth/ethereum.go
+++ b/eth/ethereum.go
@@ -64,8 +64,7 @@ type EthereumConfig struct {
 	GasPriceDiv  uint64
 }

-// EthereumClient is an ethereum client to call Smart Contract methods and check blockchain
-// information.
+// EthereumClient is an ethereum client to call Smart Contract methods and check blockchain information.
 type EthereumClient struct {
 	client  *ethclient.Client
 	chainID *big.Int
@@ -77,8 +76,7 @@ type EthereumClient struct {

 // NewEthereumClient creates a EthereumClient instance.  The account is not mandatory (it can
 // be nil).  If the account is nil, CallAuth will fail with ErrAccountNil.
-func NewEthereumClient(client *ethclient.Client, account *accounts.Account,
-	ks *ethKeystore.KeyStore, config *EthereumConfig) (*EthereumClient, error) {
+func NewEthereumClient(client *ethclient.Client, account *accounts.Account, ks *ethKeystore.KeyStore, config *EthereumConfig) (*EthereumClient, error) {
 	if config == nil {
 		config = &EthereumConfig{
 			CallGasLimit: defaultCallGasLimit,
@@ -168,8 +166,7 @@ func (c *EthereumClient) NewAuth() (*bind.TransactOpts, error) {
 // This call requires a valid account with Ether that can be spend during the
 // call.
 func (c *EthereumClient) CallAuth(gasLimit uint64,
-	fn func(*ethclient.Client, *bind.TransactOpts) (*types.Transaction, error)) (*types.Transaction,
-	error) {
+	fn func(*ethclient.Client, *bind.TransactOpts) (*types.Transaction, error)) (*types.Transaction, error) {
 	if c.account == nil {
 		return nil, tracerr.Wrap(ErrAccountNil)
 	}
@@ -215,8 +212,7 @@ func (c *EthereumClient) Call(fn func(*ethclient.Client) error) error {
 }

 // EthTransactionReceipt returns the transaction receipt of the given txHash
-func (c *EthereumClient) EthTransactionReceipt(ctx context.Context,
-	txHash ethCommon.Hash) (*types.Receipt, error) {
+func (c *EthereumClient) EthTransactionReceipt(ctx context.Context, txHash ethCommon.Hash) (*types.Receipt, error) {
 	return c.client.TransactionReceipt(ctx, txHash)
 }

@@ -232,15 +228,13 @@ func (c *EthereumClient) EthLastBlock() (int64, error) {
 }

 // EthHeaderByNumber internally calls ethclient.Client HeaderByNumber
-// func (c *EthereumClient) EthHeaderByNumber(ctx context.Context, number *big.Int) (*types.Header,
-// 	error) {
+// func (c *EthereumClient) EthHeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) {
 // 	return c.client.HeaderByNumber(ctx, number)
 // }

 // EthBlockByNumber internally calls ethclient.Client BlockByNumber and returns
 // *common.Block.  If number == -1, the latests known block is returned.
-func (c *EthereumClient) EthBlockByNumber(ctx context.Context, number int64) (*common.Block,
-	error) {
+func (c *EthereumClient) EthBlockByNumber(ctx context.Context, number int64) (*common.Block, error) {
 	blockNum := big.NewInt(number)
 	if number == -1 {
 		blockNum = nil
--- a/eth/helpers.go
+++ b/eth/helpers.go
@@ -14,8 +14,7 @@ import (
 func addBlock(url string) {
 	method := "POST"

-	payload := strings.NewReader(
-		"{\n    \"jsonrpc\":\"2.0\",\n    \"method\":\"evm_mine\",\n    \"params\":[],\n    \"id\":1\n}")
+	payload := strings.NewReader("{\n    \"jsonrpc\":\"2.0\",\n    \"method\":\"evm_mine\",\n    \"params\":[],\n    \"id\":1\n}")

 	client := &http.Client{}
 	req, err := http.NewRequest(method, url, payload)
@@ -46,9 +45,7 @@ func addTime(seconds float64, url string) {
 	secondsStr := strconv.FormatFloat(seconds, 'E', -1, 32)

 	method := "POST"
-	payload := strings.NewReader(
-		"{\n    \"jsonrpc\":\"2.0\",\n    \"method\":\"evm_increaseTime\",\n    \"params\":[" +
-			secondsStr + "],\n    \"id\":1\n}")
+	payload := strings.NewReader("{\n    \"jsonrpc\":\"2.0\",\n    \"method\":\"evm_increaseTime\",\n    \"params\":[" + secondsStr + "],\n    \"id\":1\n}")

 	client := &http.Client{}
 	req, err := http.NewRequest(method, url, payload)
@@ -69,16 +66,13 @@ func addTime(seconds float64, url string) {
 	}()
 }

-func createPermitDigest(tokenAddr, owner, spender ethCommon.Address, chainID, value, nonce,
-	deadline *big.Int, tokenName string) ([]byte, error) {
+func createPermitDigest(tokenAddr, owner, spender ethCommon.Address, chainID, value, nonce, deadline *big.Int, tokenName string) ([]byte, error) {
 	// NOTE: We ignore hash.Write errors because we are writing to a memory
 	// buffer and don't expect any errors to occur.
-	abiPermit :=
-		[]byte("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)")
+	abiPermit := []byte("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)")
 	hashPermit := sha3.NewLegacyKeccak256()
 	hashPermit.Write(abiPermit) //nolint:errcheck,gosec
-	abiEIP712Domain :=
-		[]byte("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)")
+	abiEIP712Domain := []byte("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)")
 	hashEIP712Domain := sha3.NewLegacyKeccak256()
 	hashEIP712Domain.Write(abiEIP712Domain) //nolint:errcheck,gosec
 	var encodeBytes []byte
@@ -130,8 +124,7 @@ func createPermitDigest(tokenAddr, owner, spender ethCommon.Address, chainID, va
 	return hashBytes2.Sum(nil), nil
 }

-func createPermit(owner, spender ethCommon.Address, amount, deadline *big.Int, digest,
-	signature []byte) []byte {
+func createPermit(owner, spender ethCommon.Address, amount, deadline *big.Int, digest, signature []byte) []byte {
 	r := signature[0:32]
 	s := signature[32:64]
 	v := signature[64] + byte(27) //nolint:gomnd
--- a/eth/main_test.go
+++ b/eth/main_test.go
@@ -26,8 +26,7 @@ var (
 	mnemonic         = "explain tackle mirror kit van hammer degree position ginger unfair soup bonus"
 )

-func genAcc(w *hdwallet.Wallet, ks *keystore.KeyStore, i int) (*accounts.Account,
-	ethCommon.Address) {
+func genAcc(w *hdwallet.Wallet, ks *keystore.KeyStore, i int) (*accounts.Account, ethCommon.Address) {
 	path := hdwallet.MustParseDerivationPath(fmt.Sprintf("m/44'/60'/0'/0/%d", i))
 	account, err := w.Derive(path, false)
 	if err != nil {
@@ -112,9 +111,7 @@ func getEnvVariables() {
 	if err != nil {
 		log.Fatal(errEnvVar)
 	}
-	if auctionAddressStr == "" || auctionTestAddressStr == "" || tokenHEZAddressStr == "" ||
-		hermezRollupAddressStr == "" || wdelayerAddressStr == "" || wdelayerTestAddressStr == "" ||
-		genesisBlockEnv == "" {
+	if auctionAddressStr == "" || auctionTestAddressStr == "" || tokenHEZAddressStr == "" || hermezRollupAddressStr == "" || wdelayerAddressStr == "" || wdelayerTestAddressStr == "" || genesisBlockEnv == "" {
 		log.Fatal(errEnvVar)
 	}

@@ -192,8 +189,7 @@ func TestMain(m *testing.M) {
 			log.Fatal(err)
 		}

-		ethereumClientEmergencyCouncil, err = NewEthereumClient(ethClient,
-			emergencyCouncilAccount, ks, nil)
+		ethereumClientEmergencyCouncil, err = NewEthereumClient(ethClient, emergencyCouncilAccount, ks, nil)
 		if err != nil {
 			log.Fatal(err)
 		}
--- a/eth/rollup.go
+++ b/eth/rollup.go
@@ -243,20 +243,13 @@ type RollupInterface interface {
 	// Public Functions

 	RollupForgeBatch(*RollupForgeBatchArgs, *bind.TransactOpts) (*types.Transaction, error)
-	RollupAddToken(tokenAddress ethCommon.Address, feeAddToken,
-		deadline *big.Int) (*types.Transaction, error)
+	RollupAddToken(tokenAddress ethCommon.Address, feeAddToken, deadline *big.Int) (*types.Transaction, error)

-	RollupWithdrawMerkleProof(babyPubKey babyjub.PublicKeyComp, tokenID uint32, numExitRoot,
-		idx int64, amount *big.Int, siblings []*big.Int, instantWithdraw bool) (*types.Transaction,
-		error)
-	RollupWithdrawCircuit(proofA, proofC [2]*big.Int, proofB [2][2]*big.Int, tokenID uint32,
-		numExitRoot, idx int64, amount *big.Int, instantWithdraw bool) (*types.Transaction, error)
+	RollupWithdrawMerkleProof(babyPubKey babyjub.PublicKeyComp, tokenID uint32, numExitRoot, idx int64, amount *big.Int, siblings []*big.Int, instantWithdraw bool) (*types.Transaction, error)
+	RollupWithdrawCircuit(proofA, proofC [2]*big.Int, proofB [2][2]*big.Int, tokenID uint32, numExitRoot, idx int64, amount *big.Int, instantWithdraw bool) (*types.Transaction, error)

-	RollupL1UserTxERC20ETH(fromBJJ babyjub.PublicKeyComp, fromIdx int64, depositAmount *big.Int,
-		amount *big.Int, tokenID uint32, toIdx int64) (*types.Transaction, error)
-	RollupL1UserTxERC20Permit(fromBJJ babyjub.PublicKeyComp, fromIdx int64,
-		depositAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64,
-		deadline *big.Int) (tx *types.Transaction, err error)
+	RollupL1UserTxERC20ETH(fromBJJ babyjub.PublicKeyComp, fromIdx int64, depositAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64) (*types.Transaction, error)
+	RollupL1UserTxERC20Permit(fromBJJ babyjub.PublicKeyComp, fromIdx int64, depositAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64, deadline *big.Int) (tx *types.Transaction, err error)

 	// Governance Public Functions
 	RollupUpdateForgeL1L2BatchTimeout(newForgeL1L2BatchTimeout int64) (*types.Transaction, error)
@@ -294,8 +287,7 @@ type RollupClient struct {
 }

 // NewRollupClient creates a new RollupClient
-func NewRollupClient(client *EthereumClient, address ethCommon.Address,
-	tokenHEZCfg TokenConfig) (*RollupClient, error) {
+func NewRollupClient(client *EthereumClient, address ethCommon.Address, tokenHEZCfg TokenConfig) (*RollupClient, error) {
 	contractAbi, err := abi.JSON(strings.NewReader(string(Hermez.HermezABI)))
 	if err != nil {
 		return nil, tracerr.Wrap(err)
@@ -331,8 +323,7 @@ func NewRollupClient(client *EthereumClient, address ethCommon.Address,
 }

 // RollupForgeBatch is the interface to call the smart contract function
-func (c *RollupClient) RollupForgeBatch(args *RollupForgeBatchArgs,
-	auth *bind.TransactOpts) (tx *types.Transaction, err error) {
+func (c *RollupClient) RollupForgeBatch(args *RollupForgeBatchArgs, auth *bind.TransactOpts) (tx *types.Transaction, err error) {
 	if auth == nil {
 		auth, err = c.client.NewAuth()
 		if err != nil {
@@ -410,8 +401,7 @@ func (c *RollupClient) RollupForgeBatch(args *RollupForgeBatchArgs,
 // RollupAddToken is the interface to call the smart contract function.
 // `feeAddToken` is the amount of HEZ tokens that will be paid to add the
 // token.  `feeAddToken` must match the public value of the smart contract.
-func (c *RollupClient) RollupAddToken(tokenAddress ethCommon.Address, feeAddToken,
-	deadline *big.Int) (tx *types.Transaction, err error) {
+func (c *RollupClient) RollupAddToken(tokenAddress ethCommon.Address, feeAddToken, deadline *big.Int) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -423,11 +413,9 @@ func (c *RollupClient) RollupAddToken(tokenAddress ethCommon.Address, feeAddToke
 			}
 			tokenName := c.tokenHEZCfg.Name
 			tokenAddr := c.tokenHEZCfg.Address
-			digest, _ := createPermitDigest(tokenAddr, owner, spender, c.chainID,
-				feeAddToken, nonce, deadline, tokenName)
+			digest, _ := createPermitDigest(tokenAddr, owner, spender, c.chainID, feeAddToken, nonce, deadline, tokenName)
 			signature, _ := c.client.ks.SignHash(*c.client.account, digest)
-			permit := createPermit(owner, spender, feeAddToken, deadline, digest,
-				signature)
+			permit := createPermit(owner, spender, feeAddToken, deadline, digest, signature)

 			return c.hermez.AddToken(auth, tokenAddress, permit)
 		},
@@ -438,9 +426,7 @@ func (c *RollupClient) RollupAddToken(tokenAddress ethCommon.Address, feeAddToke
 }

 // RollupWithdrawMerkleProof is the interface to call the smart contract function
-func (c *RollupClient) RollupWithdrawMerkleProof(fromBJJ babyjub.PublicKeyComp, tokenID uint32,
-	numExitRoot, idx int64, amount *big.Int, siblings []*big.Int,
-	instantWithdraw bool) (tx *types.Transaction, err error) {
+func (c *RollupClient) RollupWithdrawMerkleProof(fromBJJ babyjub.PublicKeyComp, tokenID uint32, numExitRoot, idx int64, amount *big.Int, siblings []*big.Int, instantWithdraw bool) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -448,8 +434,7 @@ func (c *RollupClient) RollupWithdrawMerkleProof(fromBJJ babyjub.PublicKeyComp,
 			babyPubKey := new(big.Int).SetBytes(pkCompB)
 			numExitRootB := uint32(numExitRoot)
 			idxBig := big.NewInt(idx)
-			return c.hermez.WithdrawMerkleProof(auth, tokenID, amount, babyPubKey,
-				numExitRootB, siblings, idxBig, instantWithdraw)
+			return c.hermez.WithdrawMerkleProof(auth, tokenID, amount, babyPubKey, numExitRootB, siblings, idxBig, instantWithdraw)
 		},
 	); err != nil {
 		return nil, tracerr.Wrap(fmt.Errorf("Failed update WithdrawMerkleProof: %w", err))
@@ -458,17 +443,13 @@ func (c *RollupClient) RollupWithdrawMerkleProof(fromBJJ babyjub.PublicKeyComp,
 }

 // RollupWithdrawCircuit is the interface to call the smart contract function
-func (c *RollupClient) RollupWithdrawCircuit(proofA, proofC [2]*big.Int, proofB [2][2]*big.Int,
-	tokenID uint32, numExitRoot, idx int64, amount *big.Int, instantWithdraw bool) (*types.Transaction,
-	error) {
+func (c *RollupClient) RollupWithdrawCircuit(proofA, proofC [2]*big.Int, proofB [2][2]*big.Int, tokenID uint32, numExitRoot, idx int64, amount *big.Int, instantWithdraw bool) (*types.Transaction, error) {
 	log.Error("TODO")
 	return nil, tracerr.Wrap(errTODO)
 }

 // RollupL1UserTxERC20ETH is the interface to call the smart contract function
-func (c *RollupClient) RollupL1UserTxERC20ETH(fromBJJ babyjub.PublicKeyComp, fromIdx int64,
-	depositAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64) (tx *types.Transaction,
-	err error) {
+func (c *RollupClient) RollupL1UserTxERC20ETH(fromBJJ babyjub.PublicKeyComp, fromIdx int64, depositAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -503,9 +484,7 @@ func (c *RollupClient) RollupL1UserTxERC20ETH(fromBJJ babyjub.PublicKeyComp, fro
 }

 // RollupL1UserTxERC20Permit is the interface to call the smart contract function
-func (c *RollupClient) RollupL1UserTxERC20Permit(fromBJJ babyjub.PublicKeyComp, fromIdx int64,
-	depositAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64,
-	deadline *big.Int) (tx *types.Transaction, err error) {
+func (c *RollupClient) RollupL1UserTxERC20Permit(fromBJJ babyjub.PublicKeyComp, fromIdx int64, depositAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64, deadline *big.Int) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -537,12 +516,11 @@ func (c *RollupClient) RollupL1UserTxERC20Permit(fromBJJ babyjub.PublicKeyComp,
 			}
 			tokenName := c.tokenHEZCfg.Name
 			tokenAddr := c.tokenHEZCfg.Address
-			digest, _ := createPermitDigest(tokenAddr, owner, spender, c.chainID,
-				amount, nonce, deadline, tokenName)
+			digest, _ := createPermitDigest(tokenAddr, owner, spender, c.chainID, amount, nonce, deadline, tokenName)
 			signature, _ := c.client.ks.SignHash(*c.client.account, digest)
 			permit := createPermit(owner, spender, amount, deadline, digest, signature)
-			return c.hermez.AddL1Transaction(auth, babyPubKey, fromIdxBig,
-				uint16(depositAmountF), uint16(amountF), tokenID, toIdxBig, permit)
+			return c.hermez.AddL1Transaction(auth, babyPubKey, fromIdxBig, uint16(depositAmountF),
+				uint16(amountF), tokenID, toIdxBig, permit)
 		},
 	); err != nil {
 		return nil, tracerr.Wrap(fmt.Errorf("Failed add L1 Tx ERC20Permit: %w", err))
@@ -574,13 +552,11 @@ func (c *RollupClient) RollupLastForgedBatch() (lastForgedBatch int64, err error
 }

 // RollupUpdateForgeL1L2BatchTimeout is the interface to call the smart contract function
-func (c *RollupClient) RollupUpdateForgeL1L2BatchTimeout(
-	newForgeL1L2BatchTimeout int64) (tx *types.Transaction, err error) {
+func (c *RollupClient) RollupUpdateForgeL1L2BatchTimeout(newForgeL1L2BatchTimeout int64) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
-			return c.hermez.UpdateForgeL1L2BatchTimeout(auth,
-				uint8(newForgeL1L2BatchTimeout))
+			return c.hermez.UpdateForgeL1L2BatchTimeout(auth, uint8(newForgeL1L2BatchTimeout))
 		},
 	); err != nil {
 		return nil, tracerr.Wrap(fmt.Errorf("Failed update ForgeL1L2BatchTimeout: %w", err))
@@ -589,8 +565,7 @@ func (c *RollupClient) RollupUpdateForgeL1L2BatchTimeout(
 }

 // RollupUpdateFeeAddToken is the interface to call the smart contract function
-func (c *RollupClient) RollupUpdateFeeAddToken(newFeeAddToken *big.Int) (tx *types.Transaction,
-	err error) {
+func (c *RollupClient) RollupUpdateFeeAddToken(newFeeAddToken *big.Int) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -625,8 +600,7 @@ func (c *RollupClient) RollupUpdateBucketsParameters(
 }

 // RollupUpdateTokenExchange is the interface to call the smart contract function
-func (c *RollupClient) RollupUpdateTokenExchange(addressArray []ethCommon.Address,
-	valueArray []uint64) (tx *types.Transaction, err error) {
+func (c *RollupClient) RollupUpdateTokenExchange(addressArray []ethCommon.Address, valueArray []uint64) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -639,8 +613,7 @@ func (c *RollupClient) RollupUpdateTokenExchange(addressArray []ethCommon.Addres
 }

 // RollupUpdateWithdrawalDelay is the interface to call the smart contract function
-func (c *RollupClient) RollupUpdateWithdrawalDelay(newWithdrawalDelay int64) (tx *types.Transaction,
-	err error) {
+func (c *RollupClient) RollupUpdateWithdrawalDelay(newWithdrawalDelay int64) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -666,8 +639,7 @@ func (c *RollupClient) RollupSafeMode() (tx *types.Transaction, err error) {
 }

 // RollupInstantWithdrawalViewer is the interface to call the smart contract function
-func (c *RollupClient) RollupInstantWithdrawalViewer(tokenAddress ethCommon.Address,
-	amount *big.Int) (instantAllowed bool, err error) {
+func (c *RollupClient) RollupInstantWithdrawalViewer(tokenAddress ethCommon.Address, amount *big.Int) (instantAllowed bool, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		instantAllowed, err = c.hermez.InstantWithdrawalViewer(c.opts, tokenAddress, amount)
 		return tracerr.Wrap(err)
@@ -702,8 +674,7 @@ func (c *RollupClient) RollupConstants() (rollupConstants *common.RollupConstant
 			}
 			newRollupVerifier.MaxTx = rollupVerifier.MaxTx.Int64()
 			newRollupVerifier.NLevels = rollupVerifier.NLevels.Int64()
-			rollupConstants.Verifiers = append(rollupConstants.Verifiers,
-				newRollupVerifier)
+			rollupConstants.Verifiers = append(rollupConstants.Verifiers, newRollupVerifier)
 		}
 		rollupConstants.HermezAuctionContract, err = c.hermez.HermezAuctionContract(c.opts)
 		if err != nil {
@@ -722,30 +693,19 @@ func (c *RollupClient) RollupConstants() (rollupConstants *common.RollupConstant
 }

 var (
-	logHermezL1UserTxEvent = crypto.Keccak256Hash([]byte(
-		"L1UserTxEvent(uint32,uint8,bytes)"))
-	logHermezAddToken = crypto.Keccak256Hash([]byte(
-		"AddToken(address,uint32)"))
-	logHermezForgeBatch = crypto.Keccak256Hash([]byte(
-		"ForgeBatch(uint32,uint16)"))
-	logHermezUpdateForgeL1L2BatchTimeout = crypto.Keccak256Hash([]byte(
-		"UpdateForgeL1L2BatchTimeout(uint8)"))
-	logHermezUpdateFeeAddToken = crypto.Keccak256Hash([]byte(
-		"UpdateFeeAddToken(uint256)"))
-	logHermezWithdrawEvent = crypto.Keccak256Hash([]byte(
-		"WithdrawEvent(uint48,uint32,bool)"))
-	logHermezUpdateBucketWithdraw = crypto.Keccak256Hash([]byte(
-		"UpdateBucketWithdraw(uint8,uint256,uint256)"))
-	logHermezUpdateWithdrawalDelay = crypto.Keccak256Hash([]byte(
-		"UpdateWithdrawalDelay(uint64)"))
-	logHermezUpdateBucketsParameters = crypto.Keccak256Hash([]byte(
-		"UpdateBucketsParameters(uint256[4][" + strconv.Itoa(common.RollupConstNumBuckets) + "])"))
-	logHermezUpdateTokenExchange = crypto.Keccak256Hash([]byte(
-		"UpdateTokenExchange(address[],uint64[])"))
-	logHermezSafeMode = crypto.Keccak256Hash([]byte(
-		"SafeMode()"))
-	logHermezInitialize = crypto.Keccak256Hash([]byte(
-		"InitializeHermezEvent(uint8,uint256,uint64)"))
+	logHermezL1UserTxEvent               = crypto.Keccak256Hash([]byte("L1UserTxEvent(uint32,uint8,bytes)"))
+	logHermezAddToken                    = crypto.Keccak256Hash([]byte("AddToken(address,uint32)"))
+	logHermezForgeBatch                  = crypto.Keccak256Hash([]byte("ForgeBatch(uint32,uint16)"))
+	logHermezUpdateForgeL1L2BatchTimeout = crypto.Keccak256Hash([]byte("UpdateForgeL1L2BatchTimeout(uint8)"))
+	logHermezUpdateFeeAddToken           = crypto.Keccak256Hash([]byte("UpdateFeeAddToken(uint256)"))
+	logHermezWithdrawEvent               = crypto.Keccak256Hash([]byte("WithdrawEvent(uint48,uint32,bool)"))
+	logHermezUpdateBucketWithdraw        = crypto.Keccak256Hash([]byte("UpdateBucketWithdraw(uint8,uint256,uint256)"))
+	logHermezUpdateWithdrawalDelay       = crypto.Keccak256Hash([]byte("UpdateWithdrawalDelay(uint64)"))
+	logHermezUpdateBucketsParameters     = crypto.Keccak256Hash([]byte("UpdateBucketsParameters(uint256[4][" +
+		strconv.Itoa(common.RollupConstNumBuckets) + "])"))
+	logHermezUpdateTokenExchange = crypto.Keccak256Hash([]byte("UpdateTokenExchange(address[],uint64[])"))
+	logHermezSafeMode            = crypto.Keccak256Hash([]byte("SafeMode()"))
+	logHermezInitialize          = crypto.Keccak256Hash([]byte("InitializeHermezEvent(uint8,uint256,uint64)"))
 )

 // RollupEventInit returns the initialize event with its corresponding block number
@@ -769,8 +729,7 @@ func (c *RollupClient) RollupEventInit() (*RollupEventInitialize, int64, error)
 	}

 	var rollupInit RollupEventInitialize
-	if err := c.contractAbi.UnpackIntoInterface(&rollupInit, "InitializeHermezEvent",
-		vLog.Data); err != nil {
+	if err := c.contractAbi.UnpackIntoInterface(&rollupInit, "InitializeHermezEvent", vLog.Data); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	return &rollupInit, int64(vLog.BlockNumber), tracerr.Wrap(err)
@@ -851,8 +810,7 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64,
 			var updateForgeL1L2BatchTimeout struct {
 				NewForgeL1L2BatchTimeout uint8
 			}
-			err := c.contractAbi.UnpackIntoInterface(&updateForgeL1L2BatchTimeout,
-				"UpdateForgeL1L2BatchTimeout", vLog.Data)
+			err := c.contractAbi.UnpackIntoInterface(&updateForgeL1L2BatchTimeout, "UpdateForgeL1L2BatchTimeout", vLog.Data)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
@@ -880,16 +838,14 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64,
 		case logHermezUpdateBucketWithdraw:
 			var updateBucketWithdrawAux rollupEventUpdateBucketWithdrawAux
 			var updateBucketWithdraw RollupEventUpdateBucketWithdraw
-			err := c.contractAbi.UnpackIntoInterface(&updateBucketWithdrawAux,
-				"UpdateBucketWithdraw", vLog.Data)
+			err := c.contractAbi.UnpackIntoInterface(&updateBucketWithdrawAux, "UpdateBucketWithdraw", vLog.Data)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
 			updateBucketWithdraw.Withdrawals = updateBucketWithdrawAux.Withdrawals
 			updateBucketWithdraw.NumBucket = int(new(big.Int).SetBytes(vLog.Topics[1][:]).Int64())
 			updateBucketWithdraw.BlockStamp = new(big.Int).SetBytes(vLog.Topics[2][:]).Int64()
-			rollupEvents.UpdateBucketWithdraw =
-				append(rollupEvents.UpdateBucketWithdraw, updateBucketWithdraw)
+			rollupEvents.UpdateBucketWithdraw = append(rollupEvents.UpdateBucketWithdraw, updateBucketWithdraw)

 		case logHermezUpdateWithdrawalDelay:
 			var withdrawalDelay RollupEventUpdateWithdrawalDelay
@@ -901,8 +857,7 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64,
 		case logHermezUpdateBucketsParameters:
 			var bucketsParametersAux rollupEventUpdateBucketsParametersAux
 			var bucketsParameters RollupEventUpdateBucketsParameters
-			err := c.contractAbi.UnpackIntoInterface(&bucketsParametersAux,
-				"UpdateBucketsParameters", vLog.Data)
+			err := c.contractAbi.UnpackIntoInterface(&bucketsParametersAux, "UpdateBucketsParameters", vLog.Data)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
@@ -912,8 +867,7 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64,
 				bucketsParameters.ArrayBuckets[i].BlockWithdrawalRate = bucket[2]
 				bucketsParameters.ArrayBuckets[i].MaxWithdrawals = bucket[3]
 			}
-			rollupEvents.UpdateBucketsParameters =
-				append(rollupEvents.UpdateBucketsParameters, bucketsParameters)
+			rollupEvents.UpdateBucketsParameters = append(rollupEvents.UpdateBucketsParameters, bucketsParameters)
 		case logHermezUpdateTokenExchange:
 			var tokensExchange RollupEventUpdateTokenExchange
 			err := c.contractAbi.UnpackIntoInterface(&tokensExchange, "UpdateTokenExchange", vLog.Data)
@@ -945,8 +899,7 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64,

 // RollupForgeBatchArgs returns the arguments used in a ForgeBatch call in the
 // Rollup Smart Contract in the given transaction, and the sender address.
-func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash,
-	l1UserTxsLen uint16) (*RollupForgeBatchArgs, *ethCommon.Address, error) {
+func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash, l1UserTxsLen uint16) (*RollupForgeBatchArgs, *ethCommon.Address, error) {
 	tx, _, err := c.client.client.TransactionByHash(context.Background(), ethTxHash)
 	if err != nil {
 		return nil, nil, tracerr.Wrap(fmt.Errorf("TransactionByHash: %w", err))
@@ -961,8 +914,7 @@ func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash,
 	if err != nil {
 		return nil, nil, tracerr.Wrap(err)
 	}
-	sender, err := c.client.client.TransactionSender(context.Background(), tx,
-		receipt.Logs[0].BlockHash, receipt.Logs[0].Index)
+	sender, err := c.client.client.TransactionSender(context.Background(), tx, receipt.Logs[0].BlockHash, receipt.Logs[0].Index)
 	if err != nil {
 		return nil, nil, tracerr.Wrap(err)
 	}
@@ -987,7 +939,7 @@ func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash,
 		FeeIdxCoordinator:     []common.Idx{},
 	}
 	nLevels := c.consts.Verifiers[rollupForgeBatchArgs.VerifierIdx].NLevels
-	lenL1L2TxsBytes := int((nLevels/8)*2 + common.Float40BytesLength + 1) //nolint:gomnd
+	lenL1L2TxsBytes := int((nLevels/8)*2 + common.Float40BytesLength + 1)
 	numBytesL1TxUser := int(l1UserTxsLen) * lenL1L2TxsBytes
 	numTxsL1Coord := len(aux.EncodedL1CoordinatorTx) / common.RollupConstL1CoordinatorTotalBytes
 	numBytesL1TxCoord := numTxsL1Coord * lenL1L2TxsBytes
@@ -997,9 +949,7 @@ func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash,
 		l1UserTxsData = aux.L1L2TxsData[:numBytesL1TxUser]
 	}
 	for i := 0; i < int(l1UserTxsLen); i++ {
-		l1Tx, err :=
-			common.L1TxFromDataAvailability(l1UserTxsData[i*lenL1L2TxsBytes:(i+1)*lenL1L2TxsBytes],
-				uint32(nLevels))
+		l1Tx, err := common.L1TxFromDataAvailability(l1UserTxsData[i*lenL1L2TxsBytes:(i+1)*lenL1L2TxsBytes], uint32(nLevels))
 		if err != nil {
 			return nil, nil, tracerr.Wrap(err)
 		}
@@ -1011,17 +961,14 @@ func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash,
 	}
 	numTxsL2 := len(l2TxsData) / lenL1L2TxsBytes
 	for i := 0; i < numTxsL2; i++ {
-		l2Tx, err :=
-			common.L2TxFromBytesDataAvailability(l2TxsData[i*lenL1L2TxsBytes:(i+1)*lenL1L2TxsBytes],
-				int(nLevels))
+		l2Tx, err := common.L2TxFromBytesDataAvailability(l2TxsData[i*lenL1L2TxsBytes:(i+1)*lenL1L2TxsBytes], int(nLevels))
 		if err != nil {
 			return nil, nil, tracerr.Wrap(err)
 		}
 		rollupForgeBatchArgs.L2TxsData = append(rollupForgeBatchArgs.L2TxsData, *l2Tx)
 	}
 	for i := 0; i < numTxsL1Coord; i++ {
-		bytesL1Coordinator :=
-			aux.EncodedL1CoordinatorTx[i*common.RollupConstL1CoordinatorTotalBytes : (i+1)*common.RollupConstL1CoordinatorTotalBytes] //nolint:lll
+		bytesL1Coordinator := aux.EncodedL1CoordinatorTx[i*common.RollupConstL1CoordinatorTotalBytes : (i+1)*common.RollupConstL1CoordinatorTotalBytes]
 		var signature []byte
 		v := bytesL1Coordinator[0]
 		s := bytesL1Coordinator[1:33]
@@ -1034,29 +981,24 @@ func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash,
 			return nil, nil, tracerr.Wrap(err)
 		}
 		rollupForgeBatchArgs.L1CoordinatorTxs = append(rollupForgeBatchArgs.L1CoordinatorTxs, *l1Tx)
-		rollupForgeBatchArgs.L1CoordinatorTxsAuths =
-			append(rollupForgeBatchArgs.L1CoordinatorTxsAuths, signature)
+		rollupForgeBatchArgs.L1CoordinatorTxsAuths = append(rollupForgeBatchArgs.L1CoordinatorTxsAuths, signature)
 	}
 	lenFeeIdxCoordinatorBytes := int(nLevels / 8) //nolint:gomnd
 	numFeeIdxCoordinator := len(aux.FeeIdxCoordinator) / lenFeeIdxCoordinatorBytes
 	for i := 0; i < numFeeIdxCoordinator; i++ {
 		var paddedFeeIdx [6]byte
-		// TODO: This check is not necessary: the first case will always work.  Test it
-		// before removing the if.
+		// TODO: This check is not necessary: the first case will always work.  Test it before removing the if.
 		if lenFeeIdxCoordinatorBytes < common.IdxBytesLen {
-			copy(paddedFeeIdx[6-lenFeeIdxCoordinatorBytes:],
-				aux.FeeIdxCoordinator[i*lenFeeIdxCoordinatorBytes:(i+1)*lenFeeIdxCoordinatorBytes])
+			copy(paddedFeeIdx[6-lenFeeIdxCoordinatorBytes:], aux.FeeIdxCoordinator[i*lenFeeIdxCoordinatorBytes:(i+1)*lenFeeIdxCoordinatorBytes])
 		} else {
-			copy(paddedFeeIdx[:],
-				aux.FeeIdxCoordinator[i*lenFeeIdxCoordinatorBytes:(i+1)*lenFeeIdxCoordinatorBytes])
+			copy(paddedFeeIdx[:], aux.FeeIdxCoordinator[i*lenFeeIdxCoordinatorBytes:(i+1)*lenFeeIdxCoordinatorBytes])
 		}
 		feeIdxCoordinator, err := common.IdxFromBytes(paddedFeeIdx[:])
 		if err != nil {
 			return nil, nil, tracerr.Wrap(err)
 		}
 		if feeIdxCoordinator != common.Idx(0) {
-			rollupForgeBatchArgs.FeeIdxCoordinator =
-				append(rollupForgeBatchArgs.FeeIdxCoordinator, feeIdxCoordinator)
+			rollupForgeBatchArgs.FeeIdxCoordinator = append(rollupForgeBatchArgs.FeeIdxCoordinator, feeIdxCoordinator)
 		}
 	}
 	return &rollupForgeBatchArgs, &sender, nil
--- a/eth/rollup_test.go
+++ b/eth/rollup_test.go
@@ -116,8 +116,7 @@ func TestRollupForgeBatch(t *testing.T) {
 	minBid.SetString("11000000000000000000", 10)
 	budget := new(big.Int)
 	budget.SetString("45200000000000000000", 10)
-	_, err = auctionClient.AuctionMultiBid(budget, currentSlot+4, currentSlot+10, slotSet,
-		maxBid, minBid, deadline)
+	_, err = auctionClient.AuctionMultiBid(budget, currentSlot+4, currentSlot+10, slotSet, maxBid, minBid, deadline)
 	require.NoError(t, err)

 	// Add Blocks
@@ -129,18 +128,12 @@ func TestRollupForgeBatch(t *testing.T) {

 	// Forge Batch 1
 	args := new(RollupForgeBatchArgs)
-	// When encoded, 64 times the 0 idx means that no idx to collect fees is specified.
-	args.FeeIdxCoordinator = []common.Idx{}
-	l1CoordinatorBytes, err := hex.DecodeString(
-		"1c660323607bb113e586183609964a333d07ebe4bef3be82ec13af453bae9590bd7711cdb6abf" +
-			"42f176eadfbe5506fbef5e092e5543733f91b0061d9a7747fa10694a915a6470fa230" +
-			"de387b51e6f4db0b09787867778687b55197ad6d6a86eac000000001")
+	args.FeeIdxCoordinator = []common.Idx{} // When encoded, 64 times the 0 idx means that no idx to collect fees is specified.
+	l1CoordinatorBytes, err := hex.DecodeString("1c660323607bb113e586183609964a333d07ebe4bef3be82ec13af453bae9590bd7711cdb6abf42f176eadfbe5506fbef5e092e5543733f91b0061d9a7747fa10694a915a6470fa230de387b51e6f4db0b09787867778687b55197ad6d6a86eac000000001")
 	require.NoError(t, err)
 	numTxsL1 := len(l1CoordinatorBytes) / common.RollupConstL1CoordinatorTotalBytes
 	for i := 0; i < numTxsL1; i++ {
-		bytesL1Coordinator :=
-			l1CoordinatorBytes[i*common.RollupConstL1CoordinatorTotalBytes : (i+1)*
-				common.RollupConstL1CoordinatorTotalBytes]
+		bytesL1Coordinator := l1CoordinatorBytes[i*common.RollupConstL1CoordinatorTotalBytes : (i+1)*common.RollupConstL1CoordinatorTotalBytes]
 		var signature []byte
 		v := bytesL1Coordinator[0]
 		s := bytesL1Coordinator[1:33]
@@ -156,12 +149,9 @@ func TestRollupForgeBatch(t *testing.T) {
 	args.L1UserTxs = []common.L1Tx{}
 	args.L2TxsData = []common.L2Tx{}
 	newStateRoot := new(big.Int)
-	newStateRoot.SetString(
-		"18317824016047294649053625209337295956588174734569560016974612130063629505228",
-		10)
+	newStateRoot.SetString("18317824016047294649053625209337295956588174734569560016974612130063629505228", 10)
 	newExitRoot := new(big.Int)
-	bytesNumExitRoot, err := hex.DecodeString(
-		"10a89d5fe8d488eda1ba371d633515739933c706c210c604f5bd209180daa43b")
+	bytesNumExitRoot, err := hex.DecodeString("10a89d5fe8d488eda1ba371d633515739933c706c210c604f5bd209180daa43b")
 	require.NoError(t, err)
 	newExitRoot.SetBytes(bytesNumExitRoot)
 	args.NewLastIdx = int64(300)
@@ -216,8 +206,7 @@ func TestRollupUpdateForgeL1L2BatchTimeout(t *testing.T) {
 	rollupEvents, err := rollupClient.RollupEventsByBlock(currentBlockNum, nil)
 	require.NoError(t, err)

-	assert.Equal(t, newForgeL1L2BatchTimeout,
-		rollupEvents.UpdateForgeL1L2BatchTimeout[0].NewForgeL1L2BatchTimeout)
+	assert.Equal(t, newForgeL1L2BatchTimeout, rollupEvents.UpdateForgeL1L2BatchTimeout[0].NewForgeL1L2BatchTimeout)
 }

 func TestRollupUpdateFeeAddToken(t *testing.T) {
@@ -259,8 +248,7 @@ func TestRollupUpdateWithdrawalDelay(t *testing.T) {
 	require.NoError(t, err)
 	rollupEvents, err := rollupClient.RollupEventsByBlock(currentBlockNum, nil)
 	require.NoError(t, err)
-	assert.Equal(t, newWithdrawalDelay,
-		int64(rollupEvents.UpdateWithdrawalDelay[0].NewWithdrawalDelay))
+	assert.Equal(t, newWithdrawalDelay, int64(rollupEvents.UpdateWithdrawalDelay[0].NewWithdrawalDelay))
 }

 func TestRollupUpdateTokenExchange(t *testing.T) {
@@ -299,8 +287,7 @@ func TestRollupL1UserTxETHCreateAccountDeposit(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
+	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -312,13 +299,11 @@ func TestRollupL1UserTxETHCreateAccountDeposit(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20CreateAccountDeposit(t *testing.T) {
-	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	key := genKeysBjj(1)
 	fromIdxInt64 := int64(0)
@@ -334,8 +319,7 @@ func TestRollupL1UserTxERC20CreateAccountDeposit(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
+	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -347,13 +331,11 @@ func TestRollupL1UserTxERC20CreateAccountDeposit(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux2.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux2.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20PermitCreateAccountDeposit(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	key := genKeysBjj(3)
 	fromIdxInt64 := int64(0)
@@ -369,8 +351,7 @@ func TestRollupL1UserTxERC20PermitCreateAccountDeposit(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
+	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -382,13 +363,11 @@ func TestRollupL1UserTxERC20PermitCreateAccountDeposit(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxETHDeposit(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(256)
 	toIdxInt64 := int64(0)
@@ -404,8 +383,7 @@ func TestRollupL1UserTxETHDeposit(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
+	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -416,13 +394,11 @@ func TestRollupL1UserTxETHDeposit(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20Deposit(t *testing.T) {
-	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(257)
 	toIdxInt64 := int64(0)
@@ -437,8 +413,7 @@ func TestRollupL1UserTxERC20Deposit(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
+	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -449,13 +424,11 @@ func TestRollupL1UserTxERC20Deposit(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux2.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux2.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20PermitDeposit(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(258)
 	toIdxInt64 := int64(0)
@@ -469,8 +442,7 @@ func TestRollupL1UserTxERC20PermitDeposit(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
+	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -481,13 +453,11 @@ func TestRollupL1UserTxERC20PermitDeposit(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxETHDepositTransfer(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(256)
 	toIdxInt64 := int64(257)
@@ -503,8 +473,7 @@ func TestRollupL1UserTxETHDepositTransfer(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
+	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -515,13 +484,11 @@ func TestRollupL1UserTxETHDepositTransfer(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20DepositTransfer(t *testing.T) {
-	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(257)
 	toIdxInt64 := int64(258)
@@ -536,8 +503,7 @@ func TestRollupL1UserTxERC20DepositTransfer(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
+	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -548,13 +514,11 @@ func TestRollupL1UserTxERC20DepositTransfer(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux2.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux2.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20PermitDepositTransfer(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(258)
 	toIdxInt64 := int64(259)
@@ -569,8 +533,7 @@ func TestRollupL1UserTxERC20PermitDepositTransfer(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
+	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -581,13 +544,11 @@ func TestRollupL1UserTxERC20PermitDepositTransfer(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxETHCreateAccountDepositTransfer(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(256)
 	toIdxInt64 := int64(257)
@@ -603,8 +564,7 @@ func TestRollupL1UserTxETHCreateAccountDepositTransfer(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
+	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -615,13 +575,11 @@ func TestRollupL1UserTxETHCreateAccountDepositTransfer(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20CreateAccountDepositTransfer(t *testing.T) {
-	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(257)
 	toIdxInt64 := int64(258)
@@ -636,8 +594,7 @@ func TestRollupL1UserTxERC20CreateAccountDepositTransfer(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
+	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -648,13 +605,11 @@ func TestRollupL1UserTxERC20CreateAccountDepositTransfer(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux2.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux2.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20PermitCreateAccountDepositTransfer(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(258)
 	toIdxInt64 := int64(259)
@@ -669,8 +624,7 @@ func TestRollupL1UserTxERC20PermitCreateAccountDepositTransfer(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
+	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -681,13 +635,11 @@ func TestRollupL1UserTxERC20PermitCreateAccountDepositTransfer(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxETHForceTransfer(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(256)
 	toIdxInt64 := int64(257)
@@ -702,8 +654,7 @@ func TestRollupL1UserTxETHForceTransfer(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
+	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -714,13 +665,11 @@ func TestRollupL1UserTxETHForceTransfer(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20ForceTransfer(t *testing.T) {
-	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(257)
 	toIdxInt64 := int64(258)
@@ -734,8 +683,7 @@ func TestRollupL1UserTxERC20ForceTransfer(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
+	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -746,13 +694,11 @@ func TestRollupL1UserTxERC20ForceTransfer(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux2.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux2.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20PermitForceTransfer(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(259)
 	toIdxInt64 := int64(260)
@@ -766,8 +712,7 @@ func TestRollupL1UserTxERC20PermitForceTransfer(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
+	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -778,13 +723,11 @@ func TestRollupL1UserTxERC20PermitForceTransfer(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxETHForceExit(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(256)
 	toIdxInt64 := int64(1)
@@ -799,8 +742,7 @@ func TestRollupL1UserTxETHForceExit(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
+	_, err = rollupClientAux.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDUint32, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -811,13 +753,11 @@ func TestRollupL1UserTxETHForceExit(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20ForceExit(t *testing.T) {
-	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux2, err := NewRollupClient(ethereumClientAux2, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(257)
 	toIdxInt64 := int64(1)
@@ -831,8 +771,7 @@ func TestRollupL1UserTxERC20ForceExit(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
+	_, err = rollupClientAux2.RollupL1UserTxERC20ETH(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenHEZID, toIdxInt64)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -843,13 +782,11 @@ func TestRollupL1UserTxERC20ForceExit(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux2.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux2.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupL1UserTxERC20PermitForceExit(t *testing.T) {
-	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst,
-		tokenHEZ)
+	rollupClientAux, err := NewRollupClient(ethereumClientAux, hermezRollupAddressConst, tokenHEZ)
 	require.NoError(t, err)
 	fromIdxInt64 := int64(258)
 	toIdxInt64 := int64(1)
@@ -865,8 +802,7 @@ func TestRollupL1UserTxERC20PermitForceExit(t *testing.T) {
 	}
 	L1UserTxs = append(L1UserTxs, l1Tx)

-	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64,
-		l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
+	_, err = rollupClientAux.RollupL1UserTxERC20Permit(l1Tx.FromBJJ, fromIdxInt64, l1Tx.DepositAmount, l1Tx.Amount, tokenIDERC777, toIdxInt64, deadline)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
@@ -877,8 +813,7 @@ func TestRollupL1UserTxERC20PermitForceExit(t *testing.T) {
 	assert.Equal(t, l1Tx.DepositAmount, rollupEvents.L1UserTx[0].L1UserTx.DepositAmount)
 	assert.Equal(t, l1Tx.TokenID, rollupEvents.L1UserTx[0].L1UserTx.TokenID)
 	assert.Equal(t, l1Tx.Amount, rollupEvents.L1UserTx[0].L1UserTx.Amount)
-	assert.Equal(t, rollupClientAux.client.account.Address,
-		rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
+	assert.Equal(t, rollupClientAux.client.account.Address, rollupEvents.L1UserTx[0].L1UserTx.FromEthAddr)
 }

 func TestRollupForgeBatch2(t *testing.T) {
@@ -894,8 +829,7 @@ func TestRollupForgeBatch2(t *testing.T) {

 	// Forge Batch 3
 	args := new(RollupForgeBatchArgs)
-	// When encoded, 64 times the 0 idx means that no idx to collect fees is specified.
-	args.FeeIdxCoordinator = []common.Idx{}
+	args.FeeIdxCoordinator = []common.Idx{} // When encoded, 64 times the 0 idx means that no idx to collect fees is specified.
 	args.L1CoordinatorTxs = argsForge.L1CoordinatorTxs
 	args.L1CoordinatorTxsAuths = argsForge.L1CoordinatorTxsAuths
 	for i := 0; i < len(L1UserTxs); i++ {
@@ -903,19 +837,14 @@ func TestRollupForgeBatch2(t *testing.T) {
 		l1UserTx.EffectiveAmount = l1UserTx.Amount
 		l1Bytes, err := l1UserTx.BytesDataAvailability(uint32(nLevels))
 		require.NoError(t, err)
-		l1UserTxDataAvailability, err := common.L1TxFromDataAvailability(l1Bytes,
-			uint32(nLevels))
+		l1UserTxDataAvailability, err := common.L1TxFromDataAvailability(l1Bytes, uint32(nLevels))
 		require.NoError(t, err)
 		args.L1UserTxs = append(args.L1UserTxs, *l1UserTxDataAvailability)
 	}
 	newStateRoot := new(big.Int)
-	newStateRoot.SetString(
-		"18317824016047294649053625209337295956588174734569560016974612130063629505228",
-		10)
+	newStateRoot.SetString("18317824016047294649053625209337295956588174734569560016974612130063629505228", 10)
 	newExitRoot := new(big.Int)
-	newExitRoot.SetString(
-		"1114281409737474688393837964161044726766678436313681099613347372031079422302",
-		10)
+	newExitRoot.SetString("1114281409737474688393837964161044726766678436313681099613347372031079422302", 10)
 	amount := new(big.Int)
 	amount.SetString("79000000", 10)
 	l2Tx := common.L2Tx{
@@ -975,8 +904,7 @@ func TestRollupWithdrawMerkleProof(t *testing.T) {
 	require.NoError(t, err)

 	var pkComp babyjub.PublicKeyComp
-	pkCompBE, err :=
-		hex.DecodeString("adc3b754f8da621967b073a787bef8eec7052f2ba712b23af57d98f65beea8b2")
+	pkCompBE, err := hex.DecodeString("adc3b754f8da621967b073a787bef8eec7052f2ba712b23af57d98f65beea8b2")
 	require.NoError(t, err)
 	pkCompLE := common.SwapEndianness(pkCompBE)
 	copy(pkComp[:], pkCompLE)
@@ -986,20 +914,16 @@ func TestRollupWithdrawMerkleProof(t *testing.T) {
 	numExitRoot := int64(3)
 	fromIdx := int64(256)
 	amount, _ := new(big.Int).SetString("20000000000000000000", 10)
-	// siblingBytes0, err := new(big.Int).SetString(
-	// 		"19508838618377323910556678335932426220272947530531646682154552299216398748115",
-	// 		10)
+	// siblingBytes0, err := new(big.Int).SetString("19508838618377323910556678335932426220272947530531646682154552299216398748115", 10)
 	// require.NoError(t, err)
-	// siblingBytes1, err := new(big.Int).SetString(
-	// 	"15198806719713909654457742294233381653226080862567104272457668857208564789571", 10)
+	// siblingBytes1, err := new(big.Int).SetString("15198806719713909654457742294233381653226080862567104272457668857208564789571", 10)
 	// require.NoError(t, err)
 	var siblings []*big.Int
 	// siblings = append(siblings, siblingBytes0)
 	// siblings = append(siblings, siblingBytes1)
 	instantWithdraw := true

-	_, err = rollupClientAux.RollupWithdrawMerkleProof(pkComp, tokenID, numExitRoot, fromIdx,
-		amount, siblings, instantWithdraw)
+	_, err = rollupClientAux.RollupWithdrawMerkleProof(pkComp, tokenID, numExitRoot, fromIdx, amount, siblings, instantWithdraw)
 	require.NoError(t, err)

 	currentBlockNum, err := rollupClient.client.EthLastBlock()
--- a/eth/wdelayer.go
+++ b/eth/wdelayer.go
@@ -132,8 +132,7 @@ type WDelayerInterface interface {
 	WDelayerDepositInfo(owner, token ethCommon.Address) (depositInfo DepositState, err error)
 	WDelayerDeposit(onwer, token ethCommon.Address, amount *big.Int) (*types.Transaction, error)
 	WDelayerWithdrawal(owner, token ethCommon.Address) (*types.Transaction, error)
-	WDelayerEscapeHatchWithdrawal(to, token ethCommon.Address,
-		amount *big.Int) (*types.Transaction, error)
+	WDelayerEscapeHatchWithdrawal(to, token ethCommon.Address, amount *big.Int) (*types.Transaction, error)

 	WDelayerEventsByBlock(blockNum int64, blockHash *ethCommon.Hash) (*WDelayerEvents, error)
 	WDelayerConstants() (*common.WDelayerConstants, error)
@@ -144,8 +143,7 @@ type WDelayerInterface interface {
 // Implementation
 //

-// WDelayerClient is the implementation of the interface to the WithdrawDelayer
-// Smart Contract in ethereum.
+// WDelayerClient is the implementation of the interface to the WithdrawDelayer Smart Contract in ethereum.
 type WDelayerClient struct {
 	client      *EthereumClient
 	address     ethCommon.Address
@@ -174,8 +172,7 @@ func NewWDelayerClient(client *EthereumClient, address ethCommon.Address) (*WDel
 }

 // WDelayerGetHermezGovernanceAddress is the interface to call the smart contract function
-func (c *WDelayerClient) WDelayerGetHermezGovernanceAddress() (
-	hermezGovernanceAddress *ethCommon.Address, err error) {
+func (c *WDelayerClient) WDelayerGetHermezGovernanceAddress() (hermezGovernanceAddress *ethCommon.Address, err error) {
 	var _hermezGovernanceAddress ethCommon.Address
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_hermezGovernanceAddress, err = c.wdelayer.GetHermezGovernanceAddress(c.opts)
@@ -187,8 +184,7 @@ func (c *WDelayerClient) WDelayerGetHermezGovernanceAddress() (
 }

 // WDelayerTransferGovernance is the interface to call the smart contract function
-func (c *WDelayerClient) WDelayerTransferGovernance(newAddress ethCommon.Address) (
-	tx *types.Transaction, err error) {
+func (c *WDelayerClient) WDelayerTransferGovernance(newAddress ethCommon.Address) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -214,8 +210,7 @@ func (c *WDelayerClient) WDelayerClaimGovernance() (tx *types.Transaction, err e
 }

 // WDelayerGetEmergencyCouncil is the interface to call the smart contract function
-func (c *WDelayerClient) WDelayerGetEmergencyCouncil() (emergencyCouncilAddress *ethCommon.Address,
-	err error) {
+func (c *WDelayerClient) WDelayerGetEmergencyCouncil() (emergencyCouncilAddress *ethCommon.Address, err error) {
 	var _emergencyCouncilAddress ethCommon.Address
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_emergencyCouncilAddress, err = c.wdelayer.GetEmergencyCouncil(c.opts)
@@ -227,8 +222,7 @@ func (c *WDelayerClient) WDelayerGetEmergencyCouncil() (emergencyCouncilAddress
 }

 // WDelayerTransferEmergencyCouncil is the interface to call the smart contract function
-func (c *WDelayerClient) WDelayerTransferEmergencyCouncil(newAddress ethCommon.Address) (
-	tx *types.Transaction, err error) {
+func (c *WDelayerClient) WDelayerTransferEmergencyCouncil(newAddress ethCommon.Address) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -277,8 +271,7 @@ func (c *WDelayerClient) WDelayerGetWithdrawalDelay() (withdrawalDelay int64, er
 }

 // WDelayerGetEmergencyModeStartingTime is the interface to call the smart contract function
-func (c *WDelayerClient) WDelayerGetEmergencyModeStartingTime() (emergencyModeStartingTime int64,
-	err error) {
+func (c *WDelayerClient) WDelayerGetEmergencyModeStartingTime() (emergencyModeStartingTime int64, err error) {
 	var _emergencyModeStartingTime uint64
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_emergencyModeStartingTime, err = c.wdelayer.GetEmergencyModeStartingTime(c.opts)
@@ -303,8 +296,7 @@ func (c *WDelayerClient) WDelayerEnableEmergencyMode() (tx *types.Transaction, e
 }

 // WDelayerChangeWithdrawalDelay is the interface to call the smart contract function
-func (c *WDelayerClient) WDelayerChangeWithdrawalDelay(newWithdrawalDelay uint64) (
-	tx *types.Transaction, err error) {
+func (c *WDelayerClient) WDelayerChangeWithdrawalDelay(newWithdrawalDelay uint64) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -317,8 +309,7 @@ func (c *WDelayerClient) WDelayerChangeWithdrawalDelay(newWithdrawalDelay uint64
 }

 // WDelayerDepositInfo is the interface to call the smart contract function
-func (c *WDelayerClient) WDelayerDepositInfo(owner, token ethCommon.Address) (
-	depositInfo DepositState, err error) {
+func (c *WDelayerClient) WDelayerDepositInfo(owner, token ethCommon.Address) (depositInfo DepositState, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		amount, depositTimestamp, err := c.wdelayer.DepositInfo(c.opts, owner, token)
 		depositInfo.Amount = amount
@@ -331,8 +322,7 @@ func (c *WDelayerClient) WDelayerDepositInfo(owner, token ethCommon.Address) (
 }

 // WDelayerDeposit is the interface to call the smart contract function
-func (c *WDelayerClient) WDelayerDeposit(owner, token ethCommon.Address, amount *big.Int) (
-	tx *types.Transaction, err error) {
+func (c *WDelayerClient) WDelayerDeposit(owner, token ethCommon.Address, amount *big.Int) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -345,8 +335,7 @@ func (c *WDelayerClient) WDelayerDeposit(owner, token ethCommon.Address, amount
 }

 // WDelayerWithdrawal is the interface to call the smart contract function
-func (c *WDelayerClient) WDelayerWithdrawal(owner, token ethCommon.Address) (tx *types.Transaction,
-	err error) {
+func (c *WDelayerClient) WDelayerWithdrawal(owner, token ethCommon.Address) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -359,8 +348,7 @@ func (c *WDelayerClient) WDelayerWithdrawal(owner, token ethCommon.Address) (tx
 }

 // WDelayerEscapeHatchWithdrawal is the interface to call the smart contract function
-func (c *WDelayerClient) WDelayerEscapeHatchWithdrawal(to, token ethCommon.Address,
-	amount *big.Int) (tx *types.Transaction, err error) {
+func (c *WDelayerClient) WDelayerEscapeHatchWithdrawal(to, token ethCommon.Address, amount *big.Int) (tx *types.Transaction, err error) {
 	if tx, err = c.client.CallAuth(
 		0,
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
@@ -396,21 +384,14 @@ func (c *WDelayerClient) WDelayerConstants() (constants *common.WDelayerConstant
 }

 var (
-	logWDelayerDeposit = crypto.Keccak256Hash([]byte(
-		"Deposit(address,address,uint192,uint64)"))
-	logWDelayerWithdraw = crypto.Keccak256Hash([]byte(
-		"Withdraw(address,address,uint192)"))
-	logWDelayerEmergencyModeEnabled = crypto.Keccak256Hash([]byte(
-		"EmergencyModeEnabled()"))
-	logWDelayerNewWithdrawalDelay = crypto.Keccak256Hash([]byte(
-		"NewWithdrawalDelay(uint64)"))
-	logWDelayerEscapeHatchWithdrawal = crypto.Keccak256Hash([]byte(
-		"EscapeHatchWithdrawal(address,address,address,uint256)"))
-	logWDelayerNewEmergencyCouncil = crypto.Keccak256Hash([]byte(
-		"NewEmergencyCouncil(address)"))
-	logWDelayerNewHermezGovernanceAddress = crypto.Keccak256Hash([]byte(
-		"NewHermezGovernanceAddress(address)"))
-	logWDelayerInitialize = crypto.Keccak256Hash([]byte(
+	logWDelayerDeposit                    = crypto.Keccak256Hash([]byte("Deposit(address,address,uint192,uint64)"))
+	logWDelayerWithdraw                   = crypto.Keccak256Hash([]byte("Withdraw(address,address,uint192)"))
+	logWDelayerEmergencyModeEnabled       = crypto.Keccak256Hash([]byte("EmergencyModeEnabled()"))
+	logWDelayerNewWithdrawalDelay         = crypto.Keccak256Hash([]byte("NewWithdrawalDelay(uint64)"))
+	logWDelayerEscapeHatchWithdrawal      = crypto.Keccak256Hash([]byte("EscapeHatchWithdrawal(address,address,address,uint256)"))
+	logWDelayerNewEmergencyCouncil        = crypto.Keccak256Hash([]byte("NewEmergencyCouncil(address)"))
+	logWDelayerNewHermezGovernanceAddress = crypto.Keccak256Hash([]byte("NewHermezGovernanceAddress(address)"))
+	logWDelayerInitialize                 = crypto.Keccak256Hash([]byte(
 		"InitializeWithdrawalDelayerEvent(uint64,address,address)"))
 )

@@ -502,51 +483,42 @@ func (c *WDelayerClient) WDelayerEventsByBlock(blockNum int64,

 		case logWDelayerEmergencyModeEnabled:
 			var emergencyModeEnabled WDelayerEventEmergencyModeEnabled
-			wdelayerEvents.EmergencyModeEnabled =
-				append(wdelayerEvents.EmergencyModeEnabled, emergencyModeEnabled)
+			wdelayerEvents.EmergencyModeEnabled = append(wdelayerEvents.EmergencyModeEnabled, emergencyModeEnabled)

 		case logWDelayerNewWithdrawalDelay:
 			var withdrawalDelay WDelayerEventNewWithdrawalDelay
-			err := c.contractAbi.UnpackIntoInterface(&withdrawalDelay,
-				"NewWithdrawalDelay", vLog.Data)
+			err := c.contractAbi.UnpackIntoInterface(&withdrawalDelay, "NewWithdrawalDelay", vLog.Data)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
-			wdelayerEvents.NewWithdrawalDelay =
-				append(wdelayerEvents.NewWithdrawalDelay, withdrawalDelay)
+			wdelayerEvents.NewWithdrawalDelay = append(wdelayerEvents.NewWithdrawalDelay, withdrawalDelay)

 		case logWDelayerEscapeHatchWithdrawal:
 			var escapeHatchWithdrawal WDelayerEventEscapeHatchWithdrawal
-			err := c.contractAbi.UnpackIntoInterface(&escapeHatchWithdrawal,
-				"EscapeHatchWithdrawal", vLog.Data)
+			err := c.contractAbi.UnpackIntoInterface(&escapeHatchWithdrawal, "EscapeHatchWithdrawal", vLog.Data)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
 			escapeHatchWithdrawal.Who = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
 			escapeHatchWithdrawal.To = ethCommon.BytesToAddress(vLog.Topics[2].Bytes())
 			escapeHatchWithdrawal.Token = ethCommon.BytesToAddress(vLog.Topics[3].Bytes())
-			wdelayerEvents.EscapeHatchWithdrawal =
-				append(wdelayerEvents.EscapeHatchWithdrawal, escapeHatchWithdrawal)
+			wdelayerEvents.EscapeHatchWithdrawal = append(wdelayerEvents.EscapeHatchWithdrawal, escapeHatchWithdrawal)

 		case logWDelayerNewEmergencyCouncil:
 			var emergencyCouncil WDelayerEventNewEmergencyCouncil
-			err := c.contractAbi.UnpackIntoInterface(&emergencyCouncil,
-				"NewEmergencyCouncil", vLog.Data)
+			err := c.contractAbi.UnpackIntoInterface(&emergencyCouncil, "NewEmergencyCouncil", vLog.Data)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
-			wdelayerEvents.NewEmergencyCouncil =
-				append(wdelayerEvents.NewEmergencyCouncil, emergencyCouncil)
+			wdelayerEvents.NewEmergencyCouncil = append(wdelayerEvents.NewEmergencyCouncil, emergencyCouncil)

 		case logWDelayerNewHermezGovernanceAddress:
 			var governanceAddress WDelayerEventNewHermezGovernanceAddress
-			err := c.contractAbi.UnpackIntoInterface(&governanceAddress,
-				"NewHermezGovernanceAddress", vLog.Data)
+			err := c.contractAbi.UnpackIntoInterface(&governanceAddress, "NewHermezGovernanceAddress", vLog.Data)
 			if err != nil {
 				return nil, tracerr.Wrap(err)
 			}
-			wdelayerEvents.NewHermezGovernanceAddress =
-				append(wdelayerEvents.NewHermezGovernanceAddress, governanceAddress)
+			wdelayerEvents.NewHermezGovernanceAddress = append(wdelayerEvents.NewHermezGovernanceAddress, governanceAddress)
 		}
 	}
 	return &wdelayerEvents, nil
--- a/eth/wdelayer_test.go
+++ b/eth/wdelayer_test.go
@@ -54,8 +54,7 @@ func TestWDelayerSetHermezGovernanceAddress(t *testing.T) {
 	require.Nil(t, err)
 	wdelayerEvents, err := wdelayerClientTest.WDelayerEventsByBlock(currentBlockNum, nil)
 	require.Nil(t, err)
-	assert.Equal(t, auxAddressConst,
-		wdelayerEvents.NewHermezGovernanceAddress[0].NewHermezGovernanceAddress)
+	assert.Equal(t, auxAddressConst, wdelayerEvents.NewHermezGovernanceAddress[0].NewHermezGovernanceAddress)
 	_, err = wdelayerClientAux.WDelayerTransferGovernance(governanceAddressConst)
 	require.Nil(t, err)
 	_, err = wdelayerClientTest.WDelayerClaimGovernance()
@@ -69,8 +68,7 @@ func TestWDelayerGetEmergencyCouncil(t *testing.T) {
 }

 func TestWDelayerSetEmergencyCouncil(t *testing.T) {
-	wdelayerClientEmergencyCouncil, err := NewWDelayerClient(ethereumClientEmergencyCouncil,
-		wdelayerTestAddressConst)
+	wdelayerClientEmergencyCouncil, err := NewWDelayerClient(ethereumClientEmergencyCouncil, wdelayerTestAddressConst)
 	require.Nil(t, err)
 	wdelayerClientAux, err := NewWDelayerClient(ethereumClientAux, wdelayerTestAddressConst)
 	require.Nil(t, err)
@@ -202,18 +200,13 @@ func TestWDelayerGetEmergencyModeStartingTime(t *testing.T) {
 func TestWDelayerEscapeHatchWithdrawal(t *testing.T) {
 	amount := new(big.Int)
 	amount.SetString("10000000000000000", 10)
-	wdelayerClientEmergencyCouncil, err := NewWDelayerClient(ethereumClientEmergencyCouncil,
-		wdelayerTestAddressConst)
+	wdelayerClientEmergencyCouncil, err := NewWDelayerClient(ethereumClientEmergencyCouncil, wdelayerTestAddressConst)
 	require.Nil(t, err)
-	_, err =
-		wdelayerClientEmergencyCouncil.WDelayerEscapeHatchWithdrawal(governanceAddressConst,
-			tokenHEZAddressConst, amount)
+	_, err = wdelayerClientEmergencyCouncil.WDelayerEscapeHatchWithdrawal(governanceAddressConst, tokenHEZAddressConst, amount)
 	require.Contains(t, err.Error(), "NO_MAX_EMERGENCY_MODE_TIME")
 	seconds := maxEmergencyModeTime.Seconds()
 	addTime(seconds, ethClientDialURL)
-	_, err =
-		wdelayerClientEmergencyCouncil.WDelayerEscapeHatchWithdrawal(governanceAddressConst,
-			tokenHEZAddressConst, amount)
+	_, err = wdelayerClientEmergencyCouncil.WDelayerEscapeHatchWithdrawal(governanceAddressConst, tokenHEZAddressConst, amount)
 	require.Nil(t, err)
 	currentBlockNum, err := wdelayerClientTest.client.EthLastBlock()
 	require.Nil(t, err)
--- a/go.mod
+++ b/go.mod
@@ -11,8 +11,8 @@ require (
 	github.com/gin-gonic/gin v1.5.0
 	github.com/gobuffalo/packr/v2 v2.8.1
 	github.com/hermeznetwork/tracerr v0.3.1-0.20210120162744-5da60b576169
-	github.com/iden3/go-iden3-crypto v0.0.6-0.20210308142348-8f85683b2cef
-	github.com/iden3/go-merkletree v0.0.0-20210308143313-8b63ca866189
+	github.com/iden3/go-iden3-crypto v0.0.6-0.20201221160344-58e589b6eb4c
+	github.com/iden3/go-merkletree v0.0.0-20210119155851-bb53e6ad1a12
 	github.com/jinzhu/copier v0.0.0-20190924061706-b57f9002281a
 	github.com/jmoiron/sqlx v1.2.1-0.20200615141059-0794cb1f47ee
 	github.com/joho/godotenv v1.3.0
@@ -21,7 +21,6 @@ require (
 	github.com/miguelmota/go-ethereum-hdwallet v0.0.0-20200123000308-a60dcd172b4c
 	github.com/mitchellh/copystructure v1.0.0
 	github.com/mitchellh/mapstructure v1.3.0
-	github.com/prometheus/client_golang v1.3.0
 	github.com/rubenv/sql-migrate v0.0.0-20200616145509-8d140a17f351
 	github.com/russross/meddler v1.0.0
 	github.com/stretchr/testify v1.6.1
--- a/go.sum
+++ b/go.sum
@@ -24,6 +24,8 @@ github.com/DataDog/zstd v1.3.6-0.20190409195224-796139022798/go.mod h1:1jcaCB/uf
 github.com/Joker/hpp v1.0.0/go.mod h1:8x5n+M1Hp5hC0g8okX3sR3vFQwynaX/UgSOM9MeBKzY=
 github.com/Joker/jade v1.0.1-0.20190614124447-d475f43051e7/go.mod h1:6E6s8o2AE4KhCrqr6GRJjdC/gNfTdxkIXvuGZZda2VM=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
+github.com/KyleBanks/depth v1.2.1 h1:5h8fQADFrWtarTdtDudMmGsC7GPbOAu6RVB3ffsVFHc=
+github.com/KyleBanks/depth v1.2.1/go.mod h1:jzSb9d0L43HxTQfT+oSA1EEp2q+ne2uh6XgeJcm8brE=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/OneOfOne/xxhash v1.2.5/go.mod h1:eZbhyaAYD41SGSSsnmcpxVoRiQ/MPUTjUdIIOT9Um7Q=
 github.com/Shopify/goreferrer v0.0.0-20181106222321-ec9c9a553398/go.mod h1:a1uqRtAwp2Xwc6WNPJEufxJ7fx3npB4UV/JOLmbu5I0=
@@ -66,7 +68,6 @@ github.com/aws/aws-sdk-go-v2 v0.18.0/go.mod h1:JWVYvqSMppoMJC0x5wdwiImzgXTI9FuZw
 github.com/aymerick/raymond v2.0.3-0.20180322193309-b565731e1464+incompatible/go.mod h1:osfaiScAUVup+UC9Nfq76eWqDhXlp+4UYaA8uhTBO6g=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
-github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/btcsuite/btcd v0.0.0-20171128150713-2e60448ffcc6/go.mod h1:Dmm/EzmjnCiweXmzRIAiUWCInVmPgjkzgv5k4tVyXiQ=
@@ -85,6 +86,8 @@ github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QH
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/cp v0.1.0 h1:SE+dxFebS7Iik5LK0tsi1k9ZCxEaFX4AjQmoyA+1dJk=
 github.com/cespare/cp v0.1.0/go.mod h1:SOGHArjBr4JWaSDEVpWpo/hNg6RoKrls6Oh40hiwW+s=
+github.com/cespare/cp v1.1.1 h1:nCb6ZLdB7NRaqsm91JtQTAme2SKJzXVsdPIPkyJr1MU=
+github.com/cespare/cp v1.1.1/go.mod h1:SOGHArjBr4JWaSDEVpWpo/hNg6RoKrls6Oh40hiwW+s=
 github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/cespare/xxhash/v2 v2.0.1-0.20190104013014-3767db7a7e18/go.mod h1:HD5P3vAIAh+Y2GAxg0PrPN1P8WkepXGpjbUPDHJqqKM=
@@ -170,6 +173,8 @@ github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5Kwzbycv
 github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
 github.com/fjl/memsize v0.0.0-20180418122429-ca190fb6ffbc h1:jtW8jbpkO4YirRSyepBOH8E+2HEw6/hKkBvFPwhUN8c=
 github.com/fjl/memsize v0.0.0-20180418122429-ca190fb6ffbc/go.mod h1:VvhXpOYNQvB+uIk2RvXzuaQtkQJzzIx6lSBe1xv7hi0=
+github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5 h1:FtmdgXiUlNeRsoNMFlKLDt+S+6hbjVMEW6RGQ7aUf7c=
+github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5/go.mod h1:VvhXpOYNQvB+uIk2RvXzuaQtkQJzzIx6lSBe1xv7hi0=
 github.com/flosch/pongo2 v0.0.0-20190707114632-bbf5a6c351f4/go.mod h1:T9YF2M40nIgbVgp3rreNmTged+9HrbNTIQf1PsaIiTA=
 github.com/franela/goblin v0.0.0-20200105215937-c9ffbefa60db/go.mod h1:7dvUGVsVBjqR7JHJk0brhHOZYGmfBYOrK0ZhYMEtBr4=
 github.com/franela/goreq v0.0.0-20171204163338-bcd34c9993f8/go.mod h1:ZhphrRTfi2rbfLwlschooIH4+wKKDR4Pdxhh+TRoA20=
@@ -330,10 +335,11 @@ github.com/huin/goupnp v1.0.0 h1:wg75sLpL6DZqwHQN6E1Cfk6mtfzS45z8OV+ic+DtHRo=
 github.com/huin/goupnp v1.0.0/go.mod h1:n9v9KO1tAxYH82qOn+UTIFQDmx5n1Zxd/ClZDMX7Bnc=
 github.com/huin/goutil v0.0.0-20170803182201-1ca381bf3150/go.mod h1:PpLOETDnJ0o3iZrZfqZzyLl6l7F3c6L1oWn7OICBi6o=
 github.com/hydrogen18/memlistener v0.0.0-20141126152155-54553eb933fb/go.mod h1:qEIFzExnS6016fRpRfxrExeVn2gbClQA99gQhnIcdhE=
-github.com/iden3/go-iden3-crypto v0.0.6-0.20210308142348-8f85683b2cef h1:72PG9b2eDlLqKszJVLrsoJbpt4CtgJLhKOjH1MJqCVY=
-github.com/iden3/go-iden3-crypto v0.0.6-0.20210308142348-8f85683b2cef/go.mod h1:oBgthFLboAWi9feaBUFy7OxEcyn9vA1khHSL/WwWFyg=
-github.com/iden3/go-merkletree v0.0.0-20210308143313-8b63ca866189 h1:hoarWk/SwNwnMXE0kiskcZULW0XBLQIUGYK4C39ozfs=
-github.com/iden3/go-merkletree v0.0.0-20210308143313-8b63ca866189/go.mod h1:56abMeBKD4BIFe346rk+yuJ4MQgfMHe28sRx4o2gOpk=
+github.com/iden3/go-iden3-crypto v0.0.6-0.20201218111145-a2015adb2f1b/go.mod h1:oBgthFLboAWi9feaBUFy7OxEcyn9vA1khHSL/WwWFyg=
+github.com/iden3/go-iden3-crypto v0.0.6-0.20201221160344-58e589b6eb4c h1:D2u8FFYey6iFXLsqqJZ8R7ch8gZum+/b98whvoSDbyg=
+github.com/iden3/go-iden3-crypto v0.0.6-0.20201221160344-58e589b6eb4c/go.mod h1:oBgthFLboAWi9feaBUFy7OxEcyn9vA1khHSL/WwWFyg=
+github.com/iden3/go-merkletree v0.0.0-20210119155851-bb53e6ad1a12 h1:DXWT0BLCSm7cJmTMQy7+iOlxkA1/5ADglufhLK52e10=
+github.com/iden3/go-merkletree v0.0.0-20210119155851-bb53e6ad1a12/go.mod h1:FdUFTW2qJiwHyy5R70uErwq7Kaq1uskyFdTfodcUJqA=
 github.com/imkira/go-interpol v1.1.0/go.mod h1:z0h2/2T3XF8kyEPpRgJ3kmNv+C43p+I/CoI+jC3w2iA=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/influxdata/influxdb v1.2.3-0.20180221223340-01288bdb0883/go.mod h1:qZna6X/4elxqT3yI9iZYdZrWWdeFOOprn86kgg4+IzY=
@@ -438,7 +444,6 @@ github.com/mattn/go-sqlite3 v1.12.0/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsO
 github.com/mattn/go-sqlite3 v2.0.3+incompatible h1:gXHsfypPkaMZrKbD5209QV9jbUTJKjyR5WD3HYQSd+U=
 github.com/mattn/go-sqlite3 v2.0.3+incompatible/go.mod h1:FPy6KqzDD04eiIsT53CuJW3U88zkxoIYsOqkbpncsNc=
 github.com/mattn/goveralls v0.0.2/go.mod h1:8d1ZMHsd7fW6IRPKQh46F2WRpyib5/X4FOpevwGNQEw=
-github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
 github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/mediocregopher/mediocre-go-lib v0.0.0-20181029021733-cb65787f37ed/go.mod h1:dSsfyI2zABAdhcbvkXqgxOxrCsbYeHCPgrZkku60dSg=
 github.com/mediocregopher/radix/v3 v3.3.0/go.mod h1:EmfVyvspXz1uZEyPBMyGK+kjWiKQGvsUt6O3Pj+LDCQ=
@@ -539,27 +544,23 @@ github.com/prometheus/client_golang v0.9.3-0.20190127221311-3c4408c8b829/go.mod
 github.com/prometheus/client_golang v0.9.3/go.mod h1:/TN21ttK/J9q6uSwhBd54HahCDft0ttaMvbicHlPoso=
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
 github.com/prometheus/client_golang v1.1.0/go.mod h1:I1FGZT9+L76gKKOs5djB6ezCbFQP1xR9D75/vuwEF3g=
-github.com/prometheus/client_golang v1.3.0 h1:miYCvYqFXtl/J9FIy8eNpBfYthAEFg+Ys0XyUVEcDsc=
 github.com/prometheus/client_golang v1.3.0/go.mod h1:hJaj2vgQTGQmVCsAACORcieXFeDPbaTKGT+JTgUa3og=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190115171406-56726106282f/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
-github.com/prometheus/client_model v0.1.0 h1:ElTg5tNp4DqfV7UQjDqv2+RJlNzsDtvNAWccbItceIE=
 github.com/prometheus/client_model v0.1.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/prometheus/common v0.0.0-20181113130724-41aa239b4cce/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
 github.com/prometheus/common v0.2.0/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
 github.com/prometheus/common v0.4.0/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
 github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
 github.com/prometheus/common v0.6.0/go.mod h1:eBmuwkDJBwy6iBfxCBob6t6dR6ENT/y+J+Zk0j9GMYc=
-github.com/prometheus/common v0.7.0 h1:L+1lyG48J1zAQXA3RBX/nG/B3gjlHq0zTt2tlbJLyCY=
 github.com/prometheus/common v0.7.0/go.mod h1:DjGbpBbp5NYNiECxcL/VnbXCCaQpKd3tt26CguLLsqA=
 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.0-20190117184657-bf6a532e95b1/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.0-20190507164030-5867b95ac084/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
 github.com/prometheus/procfs v0.0.3/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDaekg4FpcdQ=
-github.com/prometheus/procfs v0.0.8 h1:+fpWZdT24pJBiqJdAwYBjPSk+5YmQzYNPYzQsdzLkt8=
 github.com/prometheus/procfs v0.0.8/go.mod h1:7Qr8sr6344vo1JqZ6HhLceV9o3AJ1Ff+GxbHq6oeK9A=
 github.com/prometheus/tsdb v0.6.2-0.20190402121629-4f204dcbc150/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40TwIPHuXU=
 github.com/prometheus/tsdb v0.7.1 h1:YZcsG11NqnK4czYLrWd9mpEuAJIHVQLwdrleYfszMAA=
@@ -601,6 +602,8 @@ github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeV
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2 h1:SPIRibHv4MatM3XXNO2BJeFLZwZ2LvZgfQ5+UNI2im4=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
+github.com/sirupsen/logrus v1.5.0 h1:1N5EYkVAPEywqZRJd7cwnRtCb6xJx7NH3T3WUTF980Q=
+github.com/sirupsen/logrus v1.5.0/go.mod h1:+F7Ogzej0PZc/94MaYx/nvG9jOFMD2osvC3s+Squfpo=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/soheilhy/cmux v0.1.4/go.mod h1:IM3LyeVVIOuxMH7sFAkER9+bJ4dT7Ms6E4xg4kGIyLM=
@@ -619,6 +622,8 @@ github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DM
 github.com/spf13/viper v1.4.0/go.mod h1:PTJ7Z/lr49W6bUbkmS1V3by4uWynFiR9p7+dSq/yZzE=
 github.com/status-im/keycard-go v0.0.0-20190316090335-8537d3370df4 h1:Gb2Tyox57NRNuZ2d3rmvB3pcmbu7O1RS3m8WRx7ilrg=
 github.com/status-im/keycard-go v0.0.0-20190316090335-8537d3370df4/go.mod h1:RZLeN1LMWmRsyYjvAu+I6Dm9QmlDaIIt+Y+4Kd7Tp+Q=
+github.com/status-im/keycard-go v0.0.0-20190424133014-d95853db0f48 h1:ju5UTwk5Odtm4trrY+4Ca4RMj5OyXbmVeDAVad2T0Jw=
+github.com/status-im/keycard-go v0.0.0-20190424133014-d95853db0f48/go.mod h1:RZLeN1LMWmRsyYjvAu+I6Dm9QmlDaIIt+Y+4Kd7Tp+Q=
 github.com/steakknife/bloomfilter v0.0.0-20180922174646-6819c0d2a570 h1:gIlAHnH1vJb5vwEjIp5kBj/eu99p/bl0Ay2goiPe5xE=
 github.com/steakknife/bloomfilter v0.0.0-20180922174646-6819c0d2a570/go.mod h1:8OR4w3TdeIHIh1g6EMY5p0gVNOovcWC+1vpc7naMuAw=
 github.com/steakknife/hamming v0.0.0-20180906055917-c99c65617cd3 h1:njlZPzLwU639dk2kqnCPPv+wNjq7Xb6EfUxe/oX0/NM=
--- a/node/node.go
+++ b/node/node.go
@@ -4,7 +4,6 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"net"
 	"net/http"
 	"sync"
 	"time"
@@ -27,7 +26,6 @@ import (
 	"github.com/hermeznetwork/hermez-node/log"
 	"github.com/hermeznetwork/hermez-node/priceupdater"
 	"github.com/hermeznetwork/hermez-node/prover"
-	"github.com/hermeznetwork/hermez-node/stateapiupdater"
 	"github.com/hermeznetwork/hermez-node/synchronizer"
 	"github.com/hermeznetwork/hermez-node/test/debugapi"
 	"github.com/hermeznetwork/hermez-node/txprocessor"
@@ -54,10 +52,9 @@ const (

 // Node is the Hermez Node
 type Node struct {
-	nodeAPI         *NodeAPI
-	stateAPIUpdater *stateapiupdater.Updater
-	debugAPI        *debugapi.DebugAPI
-	priceUpdater    *priceupdater.PriceUpdater
+	nodeAPI      *NodeAPI
+	debugAPI     *debugapi.DebugAPI
+	priceUpdater *priceupdater.PriceUpdater
 	// Coordinator
 	coord *coordinator.Coordinator

@@ -65,58 +62,37 @@ type Node struct {
 	sync *synchronizer.Synchronizer

 	// General
-	cfg          *config.Node
-	mode         Mode
-	sqlConnRead  *sqlx.DB
-	sqlConnWrite *sqlx.DB
-	historyDB    *historydb.HistoryDB
-	ctx          context.Context
-	wg           sync.WaitGroup
-	cancel       context.CancelFunc
+	cfg     *config.Node
+	mode    Mode
+	sqlConn *sqlx.DB
+	ctx     context.Context
+	wg      sync.WaitGroup
+	cancel  context.CancelFunc
 }

 // NewNode creates a Node
 func NewNode(mode Mode, cfg *config.Node) (*Node, error) {
 	meddler.Debug = cfg.Debug.MeddlerLogs
 	// Stablish DB connection
-	dbWrite, err := dbUtils.InitSQLDB(
-		cfg.PostgreSQL.PortWrite,
-		cfg.PostgreSQL.HostWrite,
-		cfg.PostgreSQL.UserWrite,
-		cfg.PostgreSQL.PasswordWrite,
-		cfg.PostgreSQL.NameWrite,
+	db, err := dbUtils.InitSQLDB(
+		cfg.PostgreSQL.Port,
+		cfg.PostgreSQL.Host,
+		cfg.PostgreSQL.User,
+		cfg.PostgreSQL.Password,
+		cfg.PostgreSQL.Name,
 	)
 	if err != nil {
-		return nil, tracerr.Wrap(fmt.Errorf("dbUtils.InitSQLDB: %w", err))
-	}
-	var dbRead *sqlx.DB
-	if cfg.PostgreSQL.HostRead == "" {
-		dbRead = dbWrite
-	} else if cfg.PostgreSQL.HostRead == cfg.PostgreSQL.HostWrite {
-		return nil, tracerr.Wrap(fmt.Errorf(
-			"PostgreSQL.HostRead and PostgreSQL.HostWrite must be different",
-		))
-	} else {
-		dbRead, err = dbUtils.InitSQLDB(
-			cfg.PostgreSQL.PortRead,
-			cfg.PostgreSQL.HostRead,
-			cfg.PostgreSQL.UserRead,
-			cfg.PostgreSQL.PasswordRead,
-			cfg.PostgreSQL.NameRead,
-		)
-		if err != nil {
-			return nil, tracerr.Wrap(fmt.Errorf("dbUtils.InitSQLDB: %w", err))
-		}
+		return nil, tracerr.Wrap(err)
 	}
 	var apiConnCon *dbUtils.APIConnectionController
 	if cfg.API.Explorer || mode == ModeCoordinator {
-		apiConnCon = dbUtils.NewAPIConnectionController(
+		apiConnCon = dbUtils.NewAPICnnectionController(
 			cfg.API.MaxSQLConnections,
 			cfg.API.SQLConnectionTimeout.Duration,
 		)
 	}

-	historyDB := historydb.NewHistoryDB(dbRead, dbWrite, apiConnCon)
+	historyDB := historydb.NewHistoryDB(db, apiConnCon)

 	ethClient, err := ethclient.Dial(cfg.Web3.URL)
 	if err != nil {
@@ -140,23 +116,6 @@ func NewNode(mode Mode, cfg *config.Node) (*Node, error) {
 		keyStore = ethKeystore.NewKeyStore(cfg.Coordinator.EthClient.Keystore.Path,
 			scryptN, scryptP)

-		balance, err := ethClient.BalanceAt(context.TODO(), cfg.Coordinator.ForgerAddress, nil)
-		if err != nil {
-			return nil, tracerr.Wrap(err)
-		}
-
-		minForgeBalance := cfg.Coordinator.MinimumForgeAddressBalance
-		if minForgeBalance != nil && balance.Cmp(minForgeBalance) == -1 {
-			return nil, tracerr.Wrap(fmt.Errorf(
-				"forger account balance is less than cfg.Coordinator.MinimumForgeAddressBalance: %v < %v",
-				balance, minForgeBalance))
-		}
-		log.Infow("forger ethereum account balance",
-			"addr", cfg.Coordinator.ForgerAddress,
-			"balance", balance,
-			"minForgeBalance", minForgeBalance,
-		)
-
 		// Unlock Coordinator ForgerAddr in the keystore to make calls
 		// to ForgeBatch in the smart contract
 		if !keyStore.HasAddress(cfg.Coordinator.ForgerAddress) {
@@ -223,19 +182,7 @@ func NewNode(mode Mode, cfg *config.Node) (*Node, error) {
 		return nil, tracerr.Wrap(err)
 	}

-	var l2DB *l2db.L2DB
-	if mode == ModeCoordinator {
-		l2DB = l2db.NewL2DB(
-			dbRead, dbWrite,
-			cfg.Coordinator.L2DB.SafetyPeriod,
-			cfg.Coordinator.L2DB.MaxTxs,
-			cfg.Coordinator.L2DB.MinFeeUSD,
-			cfg.Coordinator.L2DB.TTL.Duration,
-			apiConnCon,
-		)
-	}
-
-	sync, err := synchronizer.NewSynchronizer(client, historyDB, l2DB, stateDB, synchronizer.Config{
+	sync, err := synchronizer.NewSynchronizer(client, historyDB, stateDB, synchronizer.Config{
 		StatsRefreshPeriod: cfg.Synchronizer.StatsRefreshPeriod.Duration,
 		ChainID:            chainIDU16,
 	})
@@ -244,37 +191,24 @@ func NewNode(mode Mode, cfg *config.Node) (*Node, error) {
 	}
 	initSCVars := sync.SCVars()

-	scConsts := common.SCConsts{
+	scConsts := synchronizer.SCConsts{
 		Rollup:   *sync.RollupConstants(),
 		Auction:  *sync.AuctionConstants(),
 		WDelayer: *sync.WDelayerConstants(),
 	}

-	hdbNodeCfg := historydb.NodeConfig{
-		MaxPoolTxs: cfg.Coordinator.L2DB.MaxTxs,
-		MinFeeUSD:  cfg.Coordinator.L2DB.MinFeeUSD,
-		ForgeDelay: cfg.Coordinator.ForgeDelay.Duration.Seconds(),
-	}
-	if err := historyDB.SetNodeConfig(&hdbNodeCfg); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	hdbConsts := historydb.Constants{
-		SCConsts: common.SCConsts{
-			Rollup:   scConsts.Rollup,
-			Auction:  scConsts.Auction,
-			WDelayer: scConsts.WDelayer,
-		},
-		ChainID:       chainIDU16,
-		HermezAddress: cfg.SmartContracts.Rollup,
-	}
-	if err := historyDB.SetConstants(&hdbConsts); err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-
-	stateAPIUpdater := stateapiupdater.NewUpdater(historyDB, &hdbNodeCfg, initSCVars, &hdbConsts)
-
 	var coord *coordinator.Coordinator
+	var l2DB *l2db.L2DB
 	if mode == ModeCoordinator {
+		l2DB = l2db.NewL2DB(
+			db,
+			cfg.Coordinator.L2DB.SafetyPeriod,
+			cfg.Coordinator.L2DB.MaxTxs,
+			cfg.Coordinator.L2DB.MinFeeUSD,
+			cfg.Coordinator.L2DB.TTL.Duration,
+			apiConnCon,
+		)
+
 		// Unlock FeeAccount EthAddr in the keystore to generate the
 		// account creation authorization
 		if !keyStore.HasAddress(cfg.Coordinator.FeeAccount.Address) {
@@ -296,15 +230,14 @@ func NewNode(mode Mode, cfg *config.Node) (*Node, error) {
 		if err := auth.Sign(func(msg []byte) ([]byte, error) {
 			return keyStore.SignHash(feeAccount, msg)
 		}, chainIDU16, cfg.SmartContracts.Rollup); err != nil {
-			return nil, tracerr.Wrap(err)
+			return nil, err
 		}
 		coordAccount := &txselector.CoordAccount{
 			Addr:                cfg.Coordinator.FeeAccount.Address,
 			BJJ:                 cfg.Coordinator.FeeAccount.BJJ,
 			AccountCreationAuth: auth.Signature,
 		}
-		txSelector, err := txselector.NewTxSelector(coordAccount,
-			cfg.Coordinator.TxSelector.Path, stateDB, l2DB)
+		txSelector, err := txselector.NewTxSelector(coordAccount, cfg.Coordinator.TxSelector.Path, stateDB, l2DB)
 		if err != nil {
 			return nil, tracerr.Wrap(err)
 		}
@@ -360,32 +293,28 @@ func NewNode(mode Mode, cfg *config.Node) (*Node, error) {

 		coord, err = coordinator.NewCoordinator(
 			coordinator.Config{
-				ForgerAddress:           cfg.Coordinator.ForgerAddress,
-				ConfirmBlocks:           cfg.Coordinator.ConfirmBlocks,
-				L1BatchTimeoutPerc:      cfg.Coordinator.L1BatchTimeoutPerc,
-				ForgeRetryInterval:      cfg.Coordinator.ForgeRetryInterval.Duration,
-				ForgeDelay:              cfg.Coordinator.ForgeDelay.Duration,
-				MustForgeAtSlotDeadline: cfg.Coordinator.MustForgeAtSlotDeadline,
-				IgnoreSlotCommitment:    cfg.Coordinator.IgnoreSlotCommitment,
-				ForgeOncePerSlotIfTxs:   cfg.Coordinator.ForgeOncePerSlotIfTxs,
-				ForgeNoTxsDelay:         cfg.Coordinator.ForgeNoTxsDelay.Duration,
-				SyncRetryInterval:       cfg.Coordinator.SyncRetryInterval.Duration,
-				PurgeByExtDelInterval:   cfg.Coordinator.PurgeByExtDelInterval.Duration,
-				EthClientAttempts:       cfg.Coordinator.EthClient.Attempts,
-				EthClientAttemptsDelay:  cfg.Coordinator.EthClient.AttemptsDelay.Duration,
-				EthNoReuseNonce:         cfg.Coordinator.EthClient.NoReuseNonce,
-				EthTxResendTimeout:      cfg.Coordinator.EthClient.TxResendTimeout.Duration,
-				MaxGasPrice:             cfg.Coordinator.EthClient.MaxGasPrice,
-				GasPriceIncPerc:         cfg.Coordinator.EthClient.GasPriceIncPerc,
-				TxManagerCheckInterval:  cfg.Coordinator.EthClient.CheckLoopInterval.Duration,
-				DebugBatchPath:          cfg.Coordinator.Debug.BatchPath,
+				ForgerAddress:          cfg.Coordinator.ForgerAddress,
+				ConfirmBlocks:          cfg.Coordinator.ConfirmBlocks,
+				L1BatchTimeoutPerc:     cfg.Coordinator.L1BatchTimeoutPerc,
+				ForgeRetryInterval:     cfg.Coordinator.ForgeRetryInterval.Duration,
+				ForgeDelay:             cfg.Coordinator.ForgeDelay.Duration,
+				ForgeNoTxsDelay:        cfg.Coordinator.ForgeNoTxsDelay.Duration,
+				SyncRetryInterval:      cfg.Coordinator.SyncRetryInterval.Duration,
+				PurgeByExtDelInterval:  cfg.Coordinator.PurgeByExtDelInterval.Duration,
+				EthClientAttempts:      cfg.Coordinator.EthClient.Attempts,
+				EthClientAttemptsDelay: cfg.Coordinator.EthClient.AttemptsDelay.Duration,
+				EthNoReuseNonce:        cfg.Coordinator.EthClient.NoReuseNonce,
+				EthTxResendTimeout:     cfg.Coordinator.EthClient.TxResendTimeout.Duration,
+				MaxGasPrice:            cfg.Coordinator.EthClient.MaxGasPrice,
+				GasPriceIncPerc:        cfg.Coordinator.EthClient.GasPriceIncPerc,
+				TxManagerCheckInterval: cfg.Coordinator.EthClient.CheckLoopInterval.Duration,
+				DebugBatchPath:         cfg.Coordinator.Debug.BatchPath,
 				Purger: coordinator.PurgerCfg{
 					PurgeBatchDelay:      cfg.Coordinator.L2DB.PurgeBatchDelay,
 					InvalidateBatchDelay: cfg.Coordinator.L2DB.InvalidateBatchDelay,
 					PurgeBlockDelay:      cfg.Coordinator.L2DB.PurgeBlockDelay,
 					InvalidateBlockDelay: cfg.Coordinator.L2DB.InvalidateBlockDelay,
 				},
-				ForgeBatchGasCost: cfg.Coordinator.EthClient.ForgeBatchGasCost,
 				VerifierIdx:       uint8(verifierIdx),
 				TxProcessorConfig: txProcessorCfg,
 			},
@@ -396,7 +325,11 @@ func NewNode(mode Mode, cfg *config.Node) (*Node, error) {
 			serverProofs,
 			client,
 			&scConsts,
-			initSCVars,
+			&synchronizer.SCVariables{
+				Rollup:   *initSCVars.Rollup,
+				Auction:  *initSCVars.Auction,
+				WDelayer: *initSCVars.WDelayer,
+			},
 		)
 		if err != nil {
 			return nil, tracerr.Wrap(err)
@@ -404,11 +337,6 @@ func NewNode(mode Mode, cfg *config.Node) (*Node, error) {
 	}
 	var nodeAPI *NodeAPI
 	if cfg.API.Address != "" {
-		if cfg.Debug.GinDebugMode {
-			gin.SetMode(gin.DebugMode)
-		} else {
-			gin.SetMode(gin.ReleaseMode)
-		}
 		if cfg.API.UpdateMetricsInterval.Duration == 0 {
 			return nil, tracerr.Wrap(fmt.Errorf("invalid cfg.API.UpdateMetricsInterval: %v",
 				cfg.API.UpdateMetricsInterval.Duration))
@@ -428,160 +356,47 @@ func NewNode(mode Mode, cfg *config.Node) (*Node, error) {
 			coord, cfg.API.Explorer,
 			server,
 			historyDB,
+			stateDB,
 			l2DB,
+			&api.Config{
+				RollupConstants:   scConsts.Rollup,
+				AuctionConstants:  scConsts.Auction,
+				WDelayerConstants: scConsts.WDelayer,
+				ChainID:           chainIDU16,
+				HermezAddress:     cfg.SmartContracts.Rollup,
+			},
 		)
 		if err != nil {
 			return nil, tracerr.Wrap(err)
 		}
+		nodeAPI.api.SetRollupVariables(*initSCVars.Rollup)
+		nodeAPI.api.SetAuctionVariables(*initSCVars.Auction)
+		nodeAPI.api.SetWDelayerVariables(*initSCVars.WDelayer)
 	}
 	var debugAPI *debugapi.DebugAPI
 	if cfg.Debug.APIAddress != "" {
 		debugAPI = debugapi.NewDebugAPI(cfg.Debug.APIAddress, stateDB, sync)
 	}
-	priceUpdater, err := priceupdater.NewPriceUpdater(
-		cfg.PriceUpdater.DefaultUpdateMethod,
-		cfg.PriceUpdater.TokensConfig,
-		historyDB,
-		cfg.PriceUpdater.URLBitfinexV2,
-		cfg.PriceUpdater.URLCoinGeckoV3,
-	)
+	priceUpdater, err := priceupdater.NewPriceUpdater(cfg.PriceUpdater.URL,
+		priceupdater.APIType(cfg.PriceUpdater.Type), historyDB)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
 	ctx, cancel := context.WithCancel(context.Background())
 	return &Node{
-		stateAPIUpdater: stateAPIUpdater,
-		nodeAPI:         nodeAPI,
-		debugAPI:        debugAPI,
-		priceUpdater:    priceUpdater,
-		coord:           coord,
-		sync:            sync,
-		cfg:             cfg,
-		mode:            mode,
-		sqlConnRead:     dbRead,
-		sqlConnWrite:    dbWrite,
-		historyDB:       historyDB,
-		ctx:             ctx,
-		cancel:          cancel,
+		nodeAPI:      nodeAPI,
+		debugAPI:     debugAPI,
+		priceUpdater: priceUpdater,
+		coord:        coord,
+		sync:         sync,
+		cfg:          cfg,
+		mode:         mode,
+		sqlConn:      db,
+		ctx:          ctx,
+		cancel:       cancel,
 	}, nil
 }

-// APIServer is a server that only runs the API
-type APIServer struct {
-	nodeAPI *NodeAPI
-	mode    Mode
-	ctx     context.Context
-	wg      sync.WaitGroup
-	cancel  context.CancelFunc
-}
-
-// NewAPIServer creates a new APIServer
-func NewAPIServer(mode Mode, cfg *config.APIServer) (*APIServer, error) {
-	meddler.Debug = cfg.Debug.MeddlerLogs
-	// Stablish DB connection
-	dbWrite, err := dbUtils.InitSQLDB(
-		cfg.PostgreSQL.PortWrite,
-		cfg.PostgreSQL.HostWrite,
-		cfg.PostgreSQL.UserWrite,
-		cfg.PostgreSQL.PasswordWrite,
-		cfg.PostgreSQL.NameWrite,
-	)
-	if err != nil {
-		return nil, tracerr.Wrap(fmt.Errorf("dbUtils.InitSQLDB: %w", err))
-	}
-	var dbRead *sqlx.DB
-	if cfg.PostgreSQL.HostRead == "" {
-		dbRead = dbWrite
-	} else if cfg.PostgreSQL.HostRead == cfg.PostgreSQL.HostWrite {
-		return nil, tracerr.Wrap(fmt.Errorf(
-			"PostgreSQL.HostRead and PostgreSQL.HostWrite must be different",
-		))
-	} else {
-		dbRead, err = dbUtils.InitSQLDB(
-			cfg.PostgreSQL.PortRead,
-			cfg.PostgreSQL.HostRead,
-			cfg.PostgreSQL.UserRead,
-			cfg.PostgreSQL.PasswordRead,
-			cfg.PostgreSQL.NameRead,
-		)
-		if err != nil {
-			return nil, tracerr.Wrap(fmt.Errorf("dbUtils.InitSQLDB: %w", err))
-		}
-	}
-	apiConnCon := dbUtils.NewAPIConnectionController(
-		cfg.API.MaxSQLConnections,
-		cfg.API.SQLConnectionTimeout.Duration,
-	)
-
-	historyDB := historydb.NewHistoryDB(dbRead, dbWrite, apiConnCon)
-
-	var l2DB *l2db.L2DB
-	if mode == ModeCoordinator {
-		l2DB = l2db.NewL2DB(
-			dbRead, dbWrite,
-			0,
-			cfg.Coordinator.L2DB.MaxTxs,
-			cfg.Coordinator.L2DB.MinFeeUSD,
-			0,
-			apiConnCon,
-		)
-	}
-
-	if cfg.Debug.GinDebugMode {
-		gin.SetMode(gin.DebugMode)
-	} else {
-		gin.SetMode(gin.ReleaseMode)
-	}
-	server := gin.Default()
-	coord := false
-	if mode == ModeCoordinator {
-		coord = cfg.Coordinator.API.Coordinator
-	}
-	nodeAPI, err := NewNodeAPI(
-		cfg.API.Address,
-		coord, cfg.API.Explorer,
-		server,
-		historyDB,
-		l2DB,
-	)
-	if err != nil {
-		return nil, tracerr.Wrap(err)
-	}
-	ctx, cancel := context.WithCancel(context.Background())
-	return &APIServer{
-		nodeAPI: nodeAPI,
-		mode:    mode,
-		ctx:     ctx,
-		cancel:  cancel,
-	}, nil
-}
-
-// Start the APIServer
-func (s *APIServer) Start() {
-	log.Infow("Starting api server...", "mode", s.mode)
-	log.Info("Starting NodeAPI...")
-	s.wg.Add(1)
-	go func() {
-		defer func() {
-			log.Info("NodeAPI routine stopped")
-			s.wg.Done()
-		}()
-		if err := s.nodeAPI.Run(s.ctx); err != nil {
-			if s.ctx.Err() != nil {
-				return
-			}
-			log.Fatalw("NodeAPI.Run", "err", err)
-		}
-	}()
-}
-
-// Stop the APIServer
-func (s *APIServer) Stop() {
-	log.Infow("Stopping NodeAPI...")
-	s.cancel()
-	s.wg.Wait()
-}
-
 // NodeAPI holds the node http API
 type NodeAPI struct { //nolint:golint
 	api    *api.API
@@ -601,7 +416,9 @@ func NewNodeAPI(
 	coordinatorEndpoints, explorerEndpoints bool,
 	server *gin.Engine,
 	hdb *historydb.HistoryDB,
+	sdb *statedb.StateDB,
 	l2db *l2db.L2DB,
+	config *api.Config,
 ) (*NodeAPI, error) {
 	engine := gin.Default()
 	engine.NoRoute(handleNoRoute)
@@ -611,6 +428,7 @@ func NewNodeAPI(
 		engine,
 		hdb,
 		l2db,
+		config,
 	)
 	if err != nil {
 		return nil, tracerr.Wrap(err)
@@ -622,24 +440,20 @@ func NewNodeAPI(
 	}, nil
 }

-// Run starts the http server of the NodeAPI.  To stop it, pass a context
-// with cancellation.
+// Run starts the http server of the NodeAPI.  To stop it, pass a context with
+// cancelation.
 func (a *NodeAPI) Run(ctx context.Context) error {
 	server := &http.Server{
+		Addr:    a.addr,
 		Handler: a.engine,
 		// TODO: Figure out best parameters for production
 		ReadTimeout:    30 * time.Second, //nolint:gomnd
 		WriteTimeout:   30 * time.Second, //nolint:gomnd
 		MaxHeaderBytes: 1 << 20,          //nolint:gomnd
 	}
-	listener, err := net.Listen("tcp", a.addr)
-	if err != nil {
-		return tracerr.Wrap(err)
-	}
-	log.Infof("NodeAPI is ready at %v", a.addr)
 	go func() {
-		if err := server.Serve(listener); err != nil &&
-			tracerr.Unwrap(err) != http.ErrServerClosed {
+		log.Infof("NodeAPI is ready at %v", a.addr)
+		if err := server.ListenAndServe(); err != nil && tracerr.Unwrap(err) != http.ErrServerClosed {
 			log.Fatalf("Listen: %s\n", err)
 		}
 	}()
@@ -655,58 +469,64 @@ func (a *NodeAPI) Run(ctx context.Context) error {
 	return nil
 }

-func (n *Node) handleNewBlock(ctx context.Context, stats *synchronizer.Stats,
-	vars *common.SCVariablesPtr, batches []common.BatchData) error {
+func (n *Node) handleNewBlock(ctx context.Context, stats *synchronizer.Stats, vars synchronizer.SCVariablesPtr,
+	batches []common.BatchData) {
 	if n.mode == ModeCoordinator {
 		n.coord.SendMsg(ctx, coordinator.MsgSyncBlock{
 			Stats:   *stats,
-			Vars:    *vars,
+			Vars:    vars,
 			Batches: batches,
 		})
 	}
-	n.stateAPIUpdater.SetSCVars(vars)
-	if stats.Synced() {
-		if err := n.stateAPIUpdater.UpdateNetworkInfo(
-			stats.Eth.LastBlock, stats.Sync.LastBlock,
-			common.BatchNum(stats.Eth.LastBatchNum),
-			stats.Sync.Auction.CurrentSlot.SlotNum,
-		); err != nil {
-			log.Errorw("ApiStateUpdater.UpdateNetworkInfo", "err", err)
+	if n.nodeAPI != nil {
+		if vars.Rollup != nil {
+			n.nodeAPI.api.SetRollupVariables(*vars.Rollup)
+		}
+		if vars.Auction != nil {
+			n.nodeAPI.api.SetAuctionVariables(*vars.Auction)
+		}
+		if vars.WDelayer != nil {
+			n.nodeAPI.api.SetWDelayerVariables(*vars.WDelayer)
+		}
+
+		if stats.Synced() {
+			if err := n.nodeAPI.api.UpdateNetworkInfo(
+				stats.Eth.LastBlock, stats.Sync.LastBlock,
+				common.BatchNum(stats.Eth.LastBatchNum),
+				stats.Sync.Auction.CurrentSlot.SlotNum,
+			); err != nil {
+				log.Errorw("API.UpdateNetworkInfo", "err", err)
+			}
+		} else {
+			n.nodeAPI.api.UpdateNetworkInfoBlock(
+				stats.Eth.LastBlock, stats.Sync.LastBlock,
+			)
 		}
-	} else {
-		n.stateAPIUpdater.UpdateNetworkInfoBlock(
-			stats.Eth.LastBlock, stats.Sync.LastBlock,
-		)
 	}
-	if err := n.stateAPIUpdater.Store(); err != nil {
-		return tracerr.Wrap(err)
-	}
-	return nil
 }

-func (n *Node) handleReorg(ctx context.Context, stats *synchronizer.Stats,
-	vars *common.SCVariables) error {
+func (n *Node) handleReorg(ctx context.Context, stats *synchronizer.Stats, vars synchronizer.SCVariablesPtr) {
 	if n.mode == ModeCoordinator {
 		n.coord.SendMsg(ctx, coordinator.MsgSyncReorg{
 			Stats: *stats,
-			Vars:  *vars.AsPtr(),
+			Vars:  vars,
 		})
 	}
-	n.stateAPIUpdater.SetSCVars(vars.AsPtr())
-	n.stateAPIUpdater.UpdateNetworkInfoBlock(
-		stats.Eth.LastBlock, stats.Sync.LastBlock,
-	)
-	if err := n.stateAPIUpdater.Store(); err != nil {
-		return tracerr.Wrap(err)
+	if n.nodeAPI != nil {
+		vars := n.sync.SCVars()
+		n.nodeAPI.api.SetRollupVariables(*vars.Rollup)
+		n.nodeAPI.api.SetAuctionVariables(*vars.Auction)
+		n.nodeAPI.api.SetWDelayerVariables(*vars.WDelayer)
+		n.nodeAPI.api.UpdateNetworkInfoBlock(
+			stats.Eth.LastBlock, stats.Sync.LastBlock,
+		)
 	}
-	return nil
 }

 // TODO(Edu): Consider keeping the `lastBlock` inside synchronizer so that we
 // don't have to pass it around.
-func (n *Node) syncLoopFn(ctx context.Context, lastBlock *common.Block) (*common.Block,
-	time.Duration, error) {
-	blockData, discarded, err := n.sync.Sync(ctx, lastBlock)
+func (n *Node) syncLoopFn(ctx context.Context, lastBlock *common.Block) (*common.Block, time.Duration, error) {
+	blockData, discarded, err := n.sync.Sync2(ctx, lastBlock)
 	stats := n.sync.Stats()
 	if err != nil {
 		// case: error
@@ -715,20 +535,16 @@ func (n *Node) syncLoopFn(ctx context.Context, lastBlock *common.Block) (*common
 		// case: reorg
 		log.Infow("Synchronizer.Sync reorg", "discarded", *discarded)
 		vars := n.sync.SCVars()
-		if err := n.handleReorg(ctx, stats, vars); err != nil {
-			return nil, time.Duration(0), tracerr.Wrap(err)
-		}
+		n.handleReorg(ctx, stats, vars)
 		return nil, time.Duration(0), nil
 	} else if blockData != nil {
 		// case: new block
-		vars := common.SCVariablesPtr{
+		vars := synchronizer.SCVariablesPtr{
 			Rollup:   blockData.Rollup.Vars,
 			Auction:  blockData.Auction.Vars,
 			WDelayer: blockData.WDelayer.Vars,
 		}
-		if err := n.handleNewBlock(ctx, stats, &vars, blockData.Rollup.Batches); err != nil {
-			return nil, time.Duration(0), tracerr.Wrap(err)
-		}
+		n.handleNewBlock(ctx, stats, vars, blockData.Rollup.Batches)
 		return &blockData.Block, time.Duration(0), nil
 	} else {
 		// case: no block
@@ -747,9 +563,7 @@ func (n *Node) StartSynchronizer() {
 	// the last synced one) is synchronized
 	stats := n.sync.Stats()
 	vars := n.sync.SCVars()
-	if err := n.handleNewBlock(n.ctx, stats, vars.AsPtr(), []common.BatchData{}); err != nil {
-		log.Fatalw("Node.handleNewBlock", "err", err)
-	}
+	n.handleNewBlock(n.ctx, stats, vars, []common.BatchData{})

 	n.wg.Add(1)
 	go func() {
@@ -835,26 +649,15 @@ func (n *Node) StartNodeAPI() {

 	n.wg.Add(1)
 	go func() {
-		// Do an initial update on startup
-		if err := n.stateAPIUpdater.UpdateMetrics(); err != nil {
-			log.Errorw("ApiStateUpdater.UpdateMetrics", "err", err)
-		}
-		if err := n.stateAPIUpdater.Store(); err != nil {
-			log.Errorw("ApiStateUpdater.Store", "err", err)
-		}
 		for {
 			select {
 			case <-n.ctx.Done():
-				log.Info("ApiStateUpdater.UpdateMetrics loop done")
+				log.Info("API.UpdateMetrics loop done")
 				n.wg.Done()
 				return
 			case <-time.After(n.cfg.API.UpdateMetricsInterval.Duration):
-				if err := n.stateAPIUpdater.UpdateMetrics(); err != nil {
-					log.Errorw("ApiStateUpdater.UpdateMetrics", "err", err)
-					continue
-				}
-				if err := n.stateAPIUpdater.Store(); err != nil {
-					log.Errorw("ApiStateUpdater.Store", "err", err)
+				if err := n.nodeAPI.api.UpdateMetrics(); err != nil {
+					log.Errorw("API.UpdateMetrics", "err", err)
 				}
 			}
 		}
@@ -862,26 +665,15 @@ func (n *Node) StartNodeAPI() {

 	n.wg.Add(1)
 	go func() {
-		// Do an initial update on startup
-		if err := n.stateAPIUpdater.UpdateRecommendedFee(); err != nil {
-			log.Errorw("ApiStateUpdater.UpdateRecommendedFee", "err", err)
-		}
-		if err := n.stateAPIUpdater.Store(); err != nil {
-			log.Errorw("ApiStateUpdater.Store", "err", err)
-		}
 		for {
 			select {
 			case <-n.ctx.Done():
-				log.Info("ApiStateUpdaterAPI.UpdateRecommendedFee loop done")
+				log.Info("API.UpdateRecommendedFee loop done")
 				n.wg.Done()
 				return
 			case <-time.After(n.cfg.API.UpdateRecommendedFeeInterval.Duration):
-				if err := n.stateAPIUpdater.UpdateRecommendedFee(); err != nil {
-					log.Errorw("ApiStateUpdaterAPI.UpdateRecommendedFee", "err", err)
-					continue
-				}
-				if err := n.stateAPIUpdater.Store(); err != nil {
-					log.Errorw("ApiStateUpdater.Store", "err", err)
+				if err := n.nodeAPI.api.UpdateRecommendedFee(); err != nil {
+					log.Errorw("API.UpdateRecommendedFee", "err", err)
 				}
 			}
 		}
--- a/priceupdater/priceupdater.go
+++ b/priceupdater/priceupdater.go
@@ -4,12 +4,9 @@ import (
 	"context"
 	"fmt"
 	"net/http"
-	"strings"
 	"time"

 	"github.com/dghubble/sling"
-	ethCommon "github.com/ethereum/go-ethereum/common"
-	"github.com/hermeznetwork/hermez-node/common"
 	"github.com/hermeznetwork/hermez-node/db/historydb"
 	"github.com/hermeznetwork/hermez-node/log"
 	"github.com/hermeznetwork/tracerr"
@@ -20,107 +17,53 @@ const (
 	defaultIdleConnTimeout = 2 * time.Second
 )

-// UpdateMethodType defines the token price update mechanism
-type UpdateMethodType string
+// APIType defines the token exchange API
+type APIType string

 const (
-	// UpdateMethodTypeBitFinexV2 is the http API used by bitfinex V2
-	UpdateMethodTypeBitFinexV2 UpdateMethodType = "bitfinexV2"
-	// UpdateMethodTypeCoingeckoV3 is the http API used by copingecko V3
-	UpdateMethodTypeCoingeckoV3 UpdateMethodType = "coingeckoV3"
-	// UpdateMethodTypeStatic is the value given by the configuration
-	UpdateMethodTypeStatic UpdateMethodType = "static"
-	// UpdateMethodTypeIgnore indicates to not update the value, to set value 0
-	// it's better to use UpdateMethodTypeStatic
-	UpdateMethodTypeIgnore UpdateMethodType = "ignore"
+	// APITypeBitFinexV2 is the http API used by bitfinex V2
+	APITypeBitFinexV2 APIType = "bitfinexV2"
 )

-func (t *UpdateMethodType) valid() bool {
+func (t *APIType) valid() bool {
 	switch *t {
-	case UpdateMethodTypeBitFinexV2:
-		return true
-	case UpdateMethodTypeCoingeckoV3:
-		return true
-	case UpdateMethodTypeStatic:
-		return true
-	case UpdateMethodTypeIgnore:
+	case APITypeBitFinexV2:
 		return true
 	default:
 		return false
 	}
 }

-// TokenConfig specifies how a single token get its price updated
-type TokenConfig struct {
-	UpdateMethod UpdateMethodType
-	StaticValue  float64 // required by UpdateMethodTypeStatic
-	Symbol       string
-	Addr         ethCommon.Address
-}
-
-func (t *TokenConfig) valid() bool {
-	if (t.Addr == common.EmptyAddr && t.Symbol != "ETH") ||
-		(t.Symbol == "" && t.UpdateMethod == UpdateMethodTypeBitFinexV2) {
-		return false
-	}
-	return t.UpdateMethod.valid()
-}
-
 // PriceUpdater definition
 type PriceUpdater struct {
-	db                  *historydb.HistoryDB
-	defaultUpdateMethod UpdateMethodType
-	tokensList          []historydb.TokenSymbolAndAddr
-	tokensConfig        map[ethCommon.Address]TokenConfig
-	clientCoingeckoV3   *sling.Sling
-	clientBitfinexV2    *sling.Sling
+	db           *historydb.HistoryDB
+	apiURL       string
+	apiType      APIType
+	tokenSymbols []string
 }

 // NewPriceUpdater is the constructor for the updater
-func NewPriceUpdater(
-	defaultUpdateMethodType UpdateMethodType,
-	tokensConfig []TokenConfig,
-	db *historydb.HistoryDB,
-	bitfinexV2URL, coingeckoV3URL string,
-) (*PriceUpdater, error) {
-	// Validate params
-	if !defaultUpdateMethodType.valid() || defaultUpdateMethodType == UpdateMethodTypeStatic {
-		return nil, tracerr.Wrap(
-			fmt.Errorf("Invalid defaultUpdateMethodType: %v", defaultUpdateMethodType),
-		)
+func NewPriceUpdater(apiURL string, apiType APIType, db *historydb.HistoryDB) (*PriceUpdater, error) {
+	tokenSymbols := []string{}
+	if !apiType.valid() {
+		return nil, tracerr.Wrap(fmt.Errorf("Invalid apiType: %v", apiType))
 	}
-	tokensConfigMap := make(map[ethCommon.Address]TokenConfig)
-	for _, t := range tokensConfig {
-		if !t.valid() {
-			return nil, tracerr.Wrap(fmt.Errorf("Invalid tokensConfig, wrong entry: %+v", t))
-		}
-		tokensConfigMap[t.Addr] = t
-	}
-	// Init
-	tr := &http.Transport{
-		MaxIdleConns:       defaultMaxIdleConns,
-		IdleConnTimeout:    defaultIdleConnTimeout,
-		DisableCompression: true,
-	}
-	httpClient := &http.Client{Transport: tr}
 	return &PriceUpdater{
-		db:                  db,
-		defaultUpdateMethod: defaultUpdateMethodType,
-		tokensList:          []historydb.TokenSymbolAndAddr{},
-		tokensConfig:        tokensConfigMap,
-		clientCoingeckoV3:   sling.New().Base(coingeckoV3URL).Client(httpClient),
-		clientBitfinexV2:    sling.New().Base(bitfinexV2URL).Client(httpClient),
+		db:           db,
+		apiURL:       apiURL,
+		apiType:      apiType,
+		tokenSymbols: tokenSymbols,
 	}, nil
 }

-func (p *PriceUpdater) getTokenPriceBitfinex(ctx context.Context, tokenSymbol string) (float64, error) {
+func getTokenPriceBitfinex(ctx context.Context, client *sling.Sling,
+	tokenSymbol string) (float64, error) {
 	state := [10]float64{}
-	url := "ticker/t" + tokenSymbol + "USD"
-	req, err := p.clientBitfinexV2.New().Get(url).Request()
+	req, err := client.New().Get("ticker/t" + tokenSymbol + "USD").Request()
 	if err != nil {
 		return 0, tracerr.Wrap(err)
 	}
-	res, err := p.clientBitfinexV2.Do(req.WithContext(ctx), &state, nil)
+	res, err := client.Do(req.WithContext(ctx), &state, nil)
 	if err != nil {
 		return 0, tracerr.Wrap(err)
 	}
@@ -130,83 +73,43 @@ func (p *PriceUpdater) getTokenPriceBitfinex(ctx context.Context, tokenSymbol st
 	return state[6], nil
 }

-func (p *PriceUpdater) getTokenPriceCoingecko(ctx context.Context, tokenAddr ethCommon.Address) (float64, error) {
-	responseObject := make(map[string]map[string]float64)
-	var url string
-	var id string
-	if tokenAddr == common.EmptyAddr { // Special case for Ether
-		url = "simple/price?ids=ethereum&vs_currencies=usd"
-		id = "ethereum"
-	} else { // Common case (ERC20)
-		id = strings.ToLower(tokenAddr.String())
-		url = "simple/token_price/ethereum?contract_addresses=" +
-			id + "&vs_currencies=usd"
-	}
-	req, err := p.clientCoingeckoV3.New().Get(url).Request()
-	if err != nil {
-		return 0, tracerr.Wrap(err)
-	}
-	res, err := p.clientCoingeckoV3.Do(req.WithContext(ctx), &responseObject, nil)
-	if err != nil {
-		return 0, tracerr.Wrap(err)
-	}
-	if res.StatusCode != http.StatusOK {
-		return 0, tracerr.Wrap(fmt.Errorf("http response is not is %v", res.StatusCode))
-	}
-	price := responseObject[id]["usd"]
-	if price <= 0 {
-		return 0, tracerr.Wrap(fmt.Errorf("price not found for %v", id))
-	}
-	return price, nil
-}
-
-// UpdatePrices is triggered by the Coordinator, and internally will update the
-// token prices in the db
+// UpdatePrices is triggered by the Coordinator, and internally will update the token prices in the db
 func (p *PriceUpdater) UpdatePrices(ctx context.Context) {
-	for _, token := range p.tokensConfig {
+	tr := &http.Transport{
+		MaxIdleConns:       defaultMaxIdleConns,
+		IdleConnTimeout:    defaultIdleConnTimeout,
+		DisableCompression: true,
+	}
+	httpClient := &http.Client{Transport: tr}
+	client := sling.New().Base(p.apiURL).Client(httpClient)
+
+	for _, tokenSymbol := range p.tokenSymbols {
 		var tokenPrice float64
 		var err error
-		switch token.UpdateMethod {
-		case UpdateMethodTypeBitFinexV2:
-			tokenPrice, err = p.getTokenPriceBitfinex(ctx, token.Symbol)
-		case UpdateMethodTypeCoingeckoV3:
-			tokenPrice, err = p.getTokenPriceCoingecko(ctx, token.Addr)
-		case UpdateMethodTypeStatic:
-			tokenPrice = token.StaticValue
-		case UpdateMethodTypeIgnore:
-			continue
+		switch p.apiType {
+		case APITypeBitFinexV2:
+			tokenPrice, err = getTokenPriceBitfinex(ctx, client, tokenSymbol)
 		}
 		if ctx.Err() != nil {
 			return
 		}
 		if err != nil {
 			log.Warnw("token price not updated (get error)",
-				"err", err, "token", token.Symbol, "updateMethod", token.UpdateMethod)
+				"err", err, "token", tokenSymbol, "apiType", p.apiType)
 		}
-		if err = p.db.UpdateTokenValue(token.Addr, tokenPrice); err != nil {
+		if err = p.db.UpdateTokenValue(tokenSymbol, tokenPrice); err != nil {
 			log.Errorw("token price not updated (db error)",
-				"err", err, "token", token.Symbol, "updateMethod", token.UpdateMethod)
+				"err", err, "token", tokenSymbol, "apiType", p.apiType)
 		}
 	}
 }

 // UpdateTokenList get the registered token symbols from HistoryDB
 func (p *PriceUpdater) UpdateTokenList() error {
-	dbTokens, err := p.db.GetTokenSymbolsAndAddrs()
+	tokenSymbols, err := p.db.GetTokenSymbols()
 	if err != nil {
 		return tracerr.Wrap(err)
 	}
-	// For each token from the DB
-	for _, dbToken := range dbTokens {
-		// If the token doesn't exists in the config list,
-		// add it with default update emthod
-		if _, ok := p.tokensConfig[dbToken.Addr]; !ok {
-			p.tokensConfig[dbToken.Addr] = TokenConfig{
-				UpdateMethod: p.defaultUpdateMethod,
-				Symbol:       dbToken.Symbol,
-				Addr:         dbToken.Addr,
-			}
-		}
-	}
+	p.tokenSymbols = tokenSymbols
 	return nil
 }
--- a/priceupdater/priceupdater_test.go
+++ b/priceupdater/priceupdater_test.go
@@ -2,6 +2,7 @@ package priceupdater

 import (
 	"context"
+	"math/big"
 	"os"
 	"testing"

@@ -14,130 +15,43 @@ import (
 	"github.com/stretchr/testify/require"
 )

-var historyDB *historydb.HistoryDB
-
-const usdtAddr = "0xdac17f958d2ee523a2206206994597c13d831ec7"
-
-func TestPriceUpdaterBitfinex(t *testing.T) {
+func TestPriceUpdater(t *testing.T) {
 	// Init DB
 	pass := os.Getenv("POSTGRES_PASS")
 	db, err := dbUtils.InitSQLDB(5432, "localhost", "hermez", pass, "hermez")
-	if err != nil {
-		panic(err)
-	}
-	historyDB = historydb.NewHistoryDB(db, db, nil)
+	assert.NoError(t, err)
+	historyDB := historydb.NewHistoryDB(db, nil)
 	// Clean DB
 	test.WipeDB(historyDB.DB())
 	// Populate DB
 	// Gen blocks and add them to DB
 	blocks := test.GenBlocks(1, 2)
-	require.NoError(t, historyDB.AddBlocks(blocks))
+	assert.NoError(t, historyDB.AddBlocks(blocks))
 	// Gen tokens and add them to DB
-	tokens := []common.Token{
-		{
-			TokenID:     1,
-			EthBlockNum: blocks[0].Num,
-			EthAddr:     ethCommon.HexToAddress("0x1"),
-			Name:        "DAI",
-			Symbol:      "DAI",
-			Decimals:    18,
-		}, // Used to test get by SC addr
-		{
-			TokenID:     2,
-			EthBlockNum: blocks[0].Num,
-			EthAddr:     ethCommon.HexToAddress(usdtAddr),
-			Name:        "Tether",
-			Symbol:      "USDT",
-			Decimals:    18,
-		}, // Used to test get by token symbol
-		{
-			TokenID:     3,
-			EthBlockNum: blocks[0].Num,
-			EthAddr:     ethCommon.HexToAddress("0x2"),
-			Name:        "FOO",
-			Symbol:      "FOO",
-			Decimals:    18,
-		}, // Used to test ignore
-		{
-			TokenID:     4,
-			EthBlockNum: blocks[0].Num,
-			EthAddr:     ethCommon.HexToAddress("0x3"),
-			Name:        "BAR",
-			Symbol:      "BAR",
-			Decimals:    18,
-		}, // Used to test static
-		{
-			TokenID:     5,
-			EthBlockNum: blocks[0].Num,
-			EthAddr:     ethCommon.HexToAddress("0x1f9840a85d5af5bf1d1762f925bdaddc4201f984"),
-			Name:        "Uniswap",
-			Symbol:      "UNI",
-			Decimals:    18,
-		}, // Used to test default
-	}
-	require.NoError(t, historyDB.AddTokens(tokens)) // ETH token exist in DB by default
-	// Update token price used to test ignore
-	ignoreValue := 44.44
-	require.NoError(t, historyDB.UpdateTokenValue(tokens[2].EthAddr, ignoreValue))
-
-	// Prepare token config
-	staticValue := 0.12345
-	tc := []TokenConfig{
-		// ETH and UNI tokens use default method
-		{ // DAI uses SC addr
-			UpdateMethod: UpdateMethodTypeBitFinexV2,
-			Addr:         ethCommon.HexToAddress("0x1"),
-			Symbol:       "DAI",
-		},
-		{ // USDT uses symbol
-			UpdateMethod: UpdateMethodTypeCoingeckoV3,
-			Addr:         ethCommon.HexToAddress(usdtAddr),
-		},
-		{ // FOO uses ignore
-			UpdateMethod: UpdateMethodTypeIgnore,
-			Addr:         ethCommon.HexToAddress("0x2"),
-		},
-		{ // BAR uses static
-			UpdateMethod: UpdateMethodTypeStatic,
-			Addr:         ethCommon.HexToAddress("0x3"),
-			StaticValue:  staticValue,
-		},
-	}
-
-	bitfinexV2URL := "https://api-pub.bitfinex.com/v2/"
-	coingeckoV3URL := "https://api.coingecko.com/api/v3/"
+	tokens := []common.Token{}
+	tokens = append(tokens, common.Token{
+		TokenID:     1,
+		EthBlockNum: blocks[0].Num,
+		EthAddr:     ethCommon.BigToAddress(big.NewInt(2)),
+		Name:        "DAI",
+		Symbol:      "DAI",
+		Decimals:    18,
+	})
+	assert.NoError(t, historyDB.AddTokens(tokens))
 	// Init price updater
-	pu, err := NewPriceUpdater(
-		UpdateMethodTypeCoingeckoV3,
-		tc,
-		historyDB,
-		bitfinexV2URL,
-		coingeckoV3URL,
-	)
+	pu, err := NewPriceUpdater("https://api-pub.bitfinex.com/v2/", APITypeBitFinexV2, historyDB)
 	require.NoError(t, err)
 	// Update token list
-	require.NoError(t, pu.UpdateTokenList())
+	assert.NoError(t, pu.UpdateTokenList())
 	// Update prices
 	pu.UpdatePrices(context.Background())
-
-	// Check results: get tokens from DB
+	// Check that prices have been updated
 	fetchedTokens, err := historyDB.GetTokensTest()
 	require.NoError(t, err)
-	// Check that tokens that are updated via API have value:
-	// ETH
-	require.NotNil(t, fetchedTokens[0].USDUpdate)
-	assert.Greater(t, *fetchedTokens[0].USD, 0.0)
-	// DAI
-	require.NotNil(t, fetchedTokens[1].USDUpdate)
-	assert.Greater(t, *fetchedTokens[1].USD, 0.0)
-	// USDT
-	require.NotNil(t, fetchedTokens[2].USDUpdate)
-	assert.Greater(t, *fetchedTokens[2].USD, 0.0)
-	// UNI
-	require.NotNil(t, fetchedTokens[5].USDUpdate)
-	assert.Greater(t, *fetchedTokens[5].USD, 0.0)
-	// Check ignored token
-	assert.Equal(t, ignoreValue, *fetchedTokens[3].USD)
-	// Check static value
-	assert.Equal(t, staticValue, *fetchedTokens[4].USD)
+	// TokenID 0 (ETH) is always on the DB
+	assert.Equal(t, 2, len(fetchedTokens))
+	for _, token := range fetchedTokens {
+		assert.NotNil(t, token.USD)
+		assert.NotNil(t, token.USDUpdate)
+	}
 }
--- a/prover/prover.go
+++ b/prover/prover.go
@@ -235,7 +235,7 @@ func (p *ProofServerClient) CalculateProof(ctx context.Context, zkInputs *common
 	return tracerr.Wrap(p.apiInput(ctx, zkInputs))
 }

-// GetProof retrieves the Proof and Public Data (public inputs) from the
+// GetProof retreives the Proof and Public Data (public inputs) from the
 // ServerProof, blocking until the proof is ready.
 func (p *ProofServerClient) GetProof(ctx context.Context) (*Proof, []*big.Int, error) {
 	if err := p.WaitReady(ctx); err != nil {
@@ -256,8 +256,7 @@ func (p *ProofServerClient) GetProof(ctx context.Context) (*Proof, []*big.Int, e
 		}
 		return &proof, pubInputs, nil
 	}
-	return nil, nil, tracerr.Wrap(fmt.Errorf("status != %v, status = %v", StatusCodeSuccess,
-		status.Status))
+	return nil, nil, tracerr.Wrap(fmt.Errorf("status != %v, status = %v", StatusCodeSuccess, status.Status))
 }

 // Cancel cancels any current proof computation
@@ -298,7 +297,7 @@ func (p *MockClient) CalculateProof(ctx context.Context, zkInputs *common.ZKInpu
 	return nil
 }

-// GetProof retrieves the Proof from the ServerProof
+// GetProof retreives the Proof from the ServerProof
 func (p *MockClient) GetProof(ctx context.Context) (*Proof, []*big.Int, error) {
 	// Simulate a delay
 	select {
--- a/Show More
+++ b/Show More