diff --git a/batch/batch.go b/batch/batch.go
new file mode 100644
index 0000000..8fe10b2
--- /dev/null
+++ b/batch/batch.go
@@ -0,0 +1,35 @@
+package batch
+
+import (
+	"github.com/syndtr/goleveldb/leveldb"
+//	"encoding/json"
+	"fmt"
+	"github.com/vocdoni/dvote-relay/types"
+)
+
+//add (queue for counting)
+func Add(p types.Packet, bdb *leveldb.DB) error {
+	err := bdb.Put([]byte(fmt.Sprintf("%v", p.Nullifier)),[]byte(fmt.Sprintf("%v", p)), nil)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+//create (return batch)
+func Create(bdb *leveldb.DB) []byte {
+	var b []byte
+
+	iter := bdb.NewIterator(nil, nil)
+	for iter.Next() {
+		err := iter.Error()
+		if err != nil {
+			panic(err)
+		}
+		//put p in batch
+		//db.Put(iter.Key(), iter.Val(), nil)
+		//bdb.Delete(iter.Key(), nil)
+	}
+	iter.Release()
+	return b
+}
diff --git a/batch/batch_test.go b/batch/batch_test.go
new file mode 100644
index 0000000..389c4ab
--- /dev/null
+++ b/batch/batch_test.go
@@ -0,0 +1 @@
+package batch
diff --git a/data/data.go b/data/data.go
index ca1d5bb..30a4441 100644
--- a/data/data.go
+++ b/data/data.go
@@ -8,13 +8,6 @@ import (
 	shell "github.com/ipfs/go-ipfs-api"
 )
 
-type votePacket struct {
-	PID uint
-	Nullifier string
-	Vote  string
-	Franchise string
-}
-
 func publish(object []byte) (string) {
 	sh := shell.NewShell("localhost:5001")
 	cid, err := sh.Add(bytes.NewBuffer(object))
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..cdb8590
--- /dev/null
+++ b/main.go
@@ -0,0 +1,54 @@
+package main
+
+import (
+	"fmt"
+	"github.com/syndtr/goleveldb/leveldb"
+	"time"
+	"github.com/vocdoni/dvote-relay/batch"
+)
+
+var dbPath = "$HOME/.dvote/relay.db"
+var bdbPath = "$HOME/.dvote/batch.db"
+var batchSeconds = 3 //seconds
+
+var err error
+var db *leveldb.DB
+var bdb *leveldb.DB
+var batchTimer *time.Ticker
+var batchSignal chan int
+
+
+func setup() {
+	db, err = leveldb.OpenFile(dbPath, nil)
+	if err != nil {
+		panic(err)
+	}
+	defer db.Close()
+
+	bdb, err = leveldb.OpenFile(bdbPath, nil)
+	if err != nil {
+		panic(err)
+	}
+	defer bdb.Close()
+
+	batchTimer = time.NewTicker(time.Second * time.Duration(batchSeconds))
+	//create batch signal channel
+}
+
+func main() {
+	setup()
+	fmt.Println("Entering main loop")
+	for {
+		select {
+		case <- batchTimer.C:
+			fmt.Println("Timer triggered")
+			fmt.Println(batch.Create(bdb))
+			//replace with chain link
+		case <- batchSignal:
+			fmt.Println("Signal triggered")
+			fmt.Println(batch.Create(bdb))
+//		case <- stopSignal:
+//			return
+		}
+	}
+}
diff --git a/net/net.go b/net/net.go
index a6e3482..e9db0a1 100644
--- a/net/net.go
+++ b/net/net.go
@@ -5,22 +5,15 @@ import (
 	"fmt"
 	"net/http"
 	"time"
-	"strconv"
 	"io"
+	"github.com/vocdoni/dvote-relay/batch"
+	"github.com/vocdoni/dvote-relay/types"
 )
 
-type submission struct {
-	Type string
-	Nonce []byte
-	Key []byte
-	Package []byte
-	Expiry time.Time
-}
-
-func parseSubmission(rw http.ResponseWriter, request *http.Request) {
+func parse(rw http.ResponseWriter, request *http.Request) {
 	decoder := json.NewDecoder(request.Body)
 
-	var s submission
+	var s Submission
 	err := decoder.Decode(&s)
 
 	if err != nil {
@@ -28,20 +21,24 @@ func parseSubmission(rw http.ResponseWriter, request *http.Request) {
 	}
 
 	//check PoW
-	//check discriminator
+	//check key
 	//decrypt
 	//check franchise
-	//add to leveldb
+	err = batch.add(p)
+	if err != nil {
+		return err
+	}
+
 	j, err := json.Marshal(s)
-	//io.WriteString(rw, string(j))
+	io.WriteString(rw, string(j))
 }
 
-func listen(port int) {
-	http.HandleFunc("/submit", parseSubmission)
-	portstr := strconv.Itoa(port)
+func listen(port string) {
+	http.HandleFunc("/submit", parse)
+	//add waitgroup
 	go func() {
-		fmt.Println("serving on " + portstr)
-		err := http.ListenAndServe(":" + portstr, nil)
+		fmt.Println("serving on " + port)
+		err := http.ListenAndServe(":" + port, nil)
 		if err != nil {
 			panic("ListenAndServe: " + err.Error())
 		}
diff --git a/net/net_test.go b/net/net_test.go
index 013146b..add58a7 100644
--- a/net/net_test.go
+++ b/net/net_test.go
@@ -10,6 +10,10 @@ import (
 	"io/ioutil"
 )
 
+//func generateSubmission() submission {
+
+//}
+
 func TestListen(t *testing.T) {
 	t.Log("Testing listener")
 
@@ -21,15 +25,14 @@ func TestListen(t *testing.T) {
 		time.Now(),
 	}
 
-	go listen(8080)
+	listen("8080")
 
 	url := "http://localhost:8080/submit"
 	fmt.Println("URL:>", url)
 
 	j, err := json.Marshal(testSubmission)
 	if err != nil {
-		fmt.Println(err)
-		return
+		t.Errorf("Bad test JSON: %s", err)
 	}
 
 	req, err := http.NewRequest("POST", url, bytes.NewBuffer(j))
@@ -38,7 +41,7 @@ func TestListen(t *testing.T) {
 	client := &http.Client{}
 	resp, err := client.Do(req)
 	if err != nil {
-		panic(err)
+		t.Errorf("Error in client: %s", err)
 	}
 	defer resp.Body.Close()
 
diff --git a/types/types.go b/types/types.go
new file mode 100644
index 0000000..7c2c56d
--- /dev/null
+++ b/types/types.go
@@ -0,0 +1,30 @@
+package types
+
+import (
+	"time"
+)
+
+type Submission struct {
+	Type string
+	Nonce []byte
+	KeyProof []byte
+	Package []byte
+	Timestamp time.Time
+}
+
+type Batch struct {
+	Type string
+	Nullifiers [][]byte
+	URL string
+	TXID string
+	Nonce	[]byte
+	Signature string
+}
+
+type Packet struct {
+	PID uint
+	Nullifier string
+	Vote  string
+	Franchise string
+}
+