fix final proof encoding (#1700)

etherman/etherman.go

@@ -13,6 +13,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/0xPolygonHermez/zkevm-node/encoding"
 	"github.com/0xPolygonHermez/zkevm-node/etherman/etherscan"
 	"github.com/0xPolygonHermez/zkevm-node/etherman/ethgasstation"
 	"github.com/0xPolygonHermez/zkevm-node/etherman/smartcontracts/matic"
@@ -463,7 +464,12 @@ func (etherMan *Client) BuildTrustedVerifyBatchesTxData(lastVerifiedBatch, newVe
 	var newStateRoot [32]byte
 	copy(newStateRoot[:], inputs.NewStateRoot)
 
-	proof := common.Hex2Bytes(inputs.FinalProof.Proof)
+	log.Info("Proof before trim: %v", inputs.FinalProof.Proof)
+	proof, err := encoding.DecodeBytes(&inputs.FinalProof.Proof)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to decode proof, err: %w", err)
+	}
+	log.Info("Proof after trim: %v", common.Bytes2Hex(proof))
 
 	const pendStateNum = 0 // TODO hardcoded for now until we implement the pending state feature