@@ -53,7 +53,7 @@ // from the L1Tx values
 func NewL1Tx(tx *L1Tx) (*L1Tx, error) {
 	txTypeOld := tx.Type
 	if err := tx.SetType(); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	// If original Type doesn't match the correct one, return error
 	if txTypeOld != "" && txTypeOld != tx.Type {
@@ -63,7 +63,7 @@ }
 
 	txIDOld := tx.TxID
 	if err := tx.SetID(); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	// If original TxID doesn't match the correct one, return error
 	if txIDOld != (TxID{}) && txIDOld != tx.TxID {

@@ -27,7 +27,7 @@ // from the L2Tx values
 func NewL2Tx(tx *L2Tx) (*L2Tx, error) {
 	txTypeOld := tx.Type
 	if err := tx.SetType(); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	// If original Type doesn't match the correct one, return error
 	if txTypeOld != "" && txTypeOld != tx.Type {
@@ -37,7 +37,7 @@ }
 
 	txIDOld := tx.TxID
 	if err := tx.SetID(); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	// If original TxID doesn't match the correct one, return error
 	if txIDOld != (TxID{}) && txIDOld != tx.TxID {

@@ -53,7 +53,7 @@ // from the L2Tx values
 func NewPoolL2Tx(tx *PoolL2Tx) (*PoolL2Tx, error) {
 	txTypeOld := tx.Type
 	if err := tx.SetType(); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	// If original Type doesn't match the correct one, return error
 	if txTypeOld != "" && txTypeOld != tx.Type {
@@ -63,7 +63,7 @@ }
 
 	txIDOld := tx.TxID
 	if err := tx.SetID(); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	// If original TxID doesn't match the correct one, return error
 	if txIDOld != (TxID{}) && txIDOld != tx.TxID {

@@ -777,11 +777,11 @@ if err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	if len(logs) != 1 {
-		return nil, 0, 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 {
-		return nil, 0, fmt.Errorf("event is not InitializeHermezAuctionProtocolEvent")
+		return nil, 0, tracerr.Wrap(fmt.Errorf("event is not InitializeHermezAuctionProtocolEvent"))
 	}
 
 	var auctionInit AuctionEventInitialize
@@ -789,7 +789,7 @@ if err := c.contractAbi.UnpackIntoInterface(&auctionInit,
 		"InitializeHermezAuctionProtocolEvent", vLog.Data); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
-	return &auctionInit, int64(vLog.BlockNumber), err
+	return &auctionInit, int64(vLog.BlockNumber), tracerr.Wrap(err)
 }
 
 // AuctionEventsByBlock returns the events in a block that happened in the

@@ -710,18 +710,18 @@ if err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	if len(logs) != 1 {
-		return nil, 0, fmt.Errorf("no event of type InitializeHermezEvent found")
+		return nil, 0, tracerr.Wrap(fmt.Errorf("no event of type InitializeHermezEvent found"))
 	}
 	vLog := logs[0]
 	if vLog.Topics[0] != logHermezInitialize {
-		return nil, 0, fmt.Errorf("event is not InitializeHermezEvent")
+		return nil, 0, tracerr.Wrap(fmt.Errorf("event is not InitializeHermezEvent"))
 	}
 
 	var rollupInit RollupEventInitialize
 	if err := c.contractAbi.UnpackIntoInterface(&rollupInit, "InitializeHermezEvent", vLog.Data); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
-	return &rollupInit, int64(vLog.BlockNumber), err
+	return &rollupInit, int64(vLog.BlockNumber), tracerr.Wrap(err)
 }
 
 // RollupEventsByBlock returns the events in a block that happened in the Rollup Smart Contract

@@ -408,11 +408,11 @@ if err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
 	if len(logs) != 1 {
-		return nil, 0, fmt.Errorf("no event of type InitializeWithdrawalDelayerEvent found")
+		return nil, 0, tracerr.Wrap(fmt.Errorf("no event of type InitializeWithdrawalDelayerEvent found"))
 	}
 	vLog := logs[0]
 	if vLog.Topics[0] != logWDelayerInitialize {
-		return nil, 0, fmt.Errorf("event is not InitializeWithdrawalDelayerEvent")
+		return nil, 0, tracerr.Wrap(fmt.Errorf("event is not InitializeWithdrawalDelayerEvent"))
 	}
 
 	var wDelayerInit WDelayerEventInitialize
@@ -420,7 +420,7 @@ if err := c.contractAbi.UnpackIntoInterface(&wDelayerInit, "InitializeWithdrawalDelayerEvent",
 		vLog.Data); err != nil {
 		return nil, 0, tracerr.Wrap(err)
 	}
-	return &wDelayerInit, int64(vLog.BlockNumber), err
+	return &wDelayerInit, int64(vLog.BlockNumber), tracerr.Wrap(err)
 }
 
 // WDelayerEventsByBlock returns the events in a block that happened in the

@@ -27,7 +27,7 @@
 func (b *bigInt) UnmarshalText(text []byte) error {
 	_, ok := (*big.Int)(b).SetString(string(text), 10)
 	if !ok {
-		return fmt.Errorf("invalid big int: \"%v\"", string(text))
+		return tracerr.Wrap(fmt.Errorf("invalid big int: \"%v\"", string(text)))
 	}
 	return nil
 }
@@ -42,7 +42,7 @@ PiC      [2]*bigInt    `json:"pi_c"`
 		Protocol string        `json:"protocol"`
 	}{}
 	if err := json.Unmarshal(data, &proof); err != nil {
-		return err
+		return tracerr.Wrap(err)
 	}
 	p.PiA[0] = (*big.Int)(proof.PiA[0])
 	p.PiA[1] = (*big.Int)(proof.PiA[1])
@@ -66,7 +66,7 @@ // are in decimal as quoted strings
 func (p *PublicInputs) UnmarshalJSON(data []byte) error {
 	pubInputs := []*bigInt{}
 	if err := json.Unmarshal(data, &pubInputs); err != nil {
-		return err
+		return tracerr.Wrap(err)
 	}
 	*p = make([]*big.Int, len(pubInputs))
 	for i, v := range pubInputs {
@@ -245,7 +245,7 @@ return nil, nil, tracerr.Wrap(err)
 		}
 		return &proof, pubInputs, nil
 	}
-	return nil, nil, fmt.Errorf("status != StatusCodeSuccess, status = %v", status.Status)
+	return nil, nil, tracerr.Wrap(fmt.Errorf("status != StatusCodeSuccess, status = %v", status.Status))
 }
 
 // Cancel cancels any current proof computation
@@ -261,7 +261,7 @@ if err != nil {
 			return tracerr.Wrap(err)
 		}
 		if !status.Status.IsInitialized() {
-			return fmt.Errorf("Proof Server is not initialized")
+			return tracerr.Wrap(fmt.Errorf("Proof Server is not initialized"))
 		}
 		if status.Status.IsReady() {
 			return nil

@@ -226,7 +226,7 @@ }
 
 	initVars, startBlockNums, err := getInitialVariables(ethClient, &consts)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	log.Infow("Synchronizer syncing from smart contract blocks",
 		"rollup", startBlockNums.Rollup,
@@ -587,15 +587,15 @@ func getInitialVariables(ethClient eth.ClientInterface,
 	consts *SCConsts) (*SCVariables, *StartBlockNums, error) {
 	rollupInit, rollupInitBlock, err := ethClient.RollupEventInit()
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	auctionInit, auctionInitBlock, err := ethClient.AuctionEventInit()
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	wDelayerInit, wDelayerInitBlock, err := ethClient.WDelayerEventInit()
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	rollupVars := rollupInit.RollupVariables()
 	auctionVars := auctionInit.AuctionVariables(consts.Auction.InitialMinimalBidding)
@@ -625,7 +625,7 @@ s.vars.Rollup = *vars.Rollup.Copy()
 		s.vars.Auction = *vars.Auction.Copy()
 		s.vars.WDelayer = *vars.WDelayer.Copy()
 	} else if err != nil {
-		return err
+		return tracerr.Wrap(err)
 	} else {
 		s.vars.Rollup = *rollup
 		s.vars.Auction = *auction
@@ -805,7 +805,7 @@
 		// Set TxID, BlockNum, BatchNum and Position to the forged L2Txs
 		for i := range l2Txs {
 			if err := l2Txs[i].SetID(); err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			l2Txs[i].EthBlockNum = blockNum
 			l2Txs[i].BatchNum = batchNum

@@ -1777,14 +1777,14 @@ rollup := nextBlock.Rollup
 		auction := nextBlock.Auction
 		for _, token := range block.Rollup.AddedTokens {
 			if _, err := c.RollupAddTokenSimple(token.EthAddr, rollup.Vars.FeeAddToken); err != nil {
-				return err
+				return tracerr.Wrap(err)
 			}
 		}
 		for _, tx := range block.Rollup.L1UserTxs {
 			c.CtlSetAddr(tx.FromEthAddr)
 			if _, err := c.RollupL1UserTxERC20ETH(tx.FromBJJ, int64(tx.FromIdx), tx.DepositAmount, tx.Amount,
 				uint32(tx.TokenID), int64(tx.ToIdx)); err != nil {
-				return err
+				return tracerr.Wrap(err)
 			}
 		}
 		c.CtlSetAddr(auction.Vars.BootCoordinator)
@@ -1804,7 +1804,7 @@ ProofA:      [2]*big.Int{},    // Intentionally empty
 				ProofB:      [2][2]*big.Int{}, // Intentionally empty
 				ProofC:      [2]*big.Int{},    // Intentionally empty
 			}); err != nil {
-				return err
+				return tracerr.Wrap(err)
 			}
 		}
 		// Mine block and sync

@@ -883,7 +883,7 @@ position++
 				tc.extra.nonces[tx.FromIdx]++
 				tx.Nonce = tc.extra.nonces[tx.FromIdx]
 				if err := tx.SetID(); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				nTx, err := common.NewL2Tx(tx)
 				if err != nil {