diff --git a/internal/testutils/suite.go b/internal/testutils/suite.go
index 630e2bd8d..2322d7d8d 100644
--- a/internal/testutils/suite.go
+++ b/internal/testutils/suite.go
@@ -36,9 +36,7 @@ func (s *ClientTestSuite) SetupTest() {
 	glogger := log.NewGlogHandler(log.NewTerminalHandlerWithLevel(os.Stdout, log.LevelInfo, true))
 	log.SetDefault(log.NewLogger(glogger))
 
-	testAddrPrivKey, err := crypto.ToECDSA(
-		common.Hex2Bytes("ac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80"),
-	)
+	testAddrPrivKey, err := crypto.ToECDSA(common.Hex2Bytes(os.Getenv("L1_PROPOSER_PRIVATE_KEY")))
 	s.Nil(err)
 
 	s.TestAddrPrivKey = testAddrPrivKey
diff --git a/pkg/rpc/tx_blob_test.go b/pkg/rpc/tx_blob_test.go
index ad5253abc..2240b5046 100644
--- a/pkg/rpc/tx_blob_test.go
+++ b/pkg/rpc/tx_blob_test.go
@@ -8,6 +8,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/accounts/abi/bind"
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/stretchr/testify/assert"
 )
@@ -16,7 +17,7 @@ func TestBlockTx(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
-	url := os.Getenv("L1_NODE_WS_ENDPOINT")
+	url := "https://rpc.dencun-devnet-12.ethpandaops.io" //os.Getenv("L1_NODE_WS_ENDPOINT")
 	l1Client, err := NewEthClient(ctx, url, time.Second*20)
 	assert.NoError(t, err)
 
@@ -41,5 +42,9 @@ func TestBlockTx(t *testing.T) {
 
 	receipt, err := bind.WaitMined(ctx, l1Client, tx)
 	assert.NoError(t, err)
-	t.Log(receipt)
+	assert.Equal(t, true, receipt.Status == types.ReceiptStatusSuccessful)
+
+	t.Log("blob hash: ", tx.BlobHashes()[0].String())
+	t.Log("block number: ", receipt.BlockNumber.Uint64())
+	t.Log("tx hash: ", receipt.TxHash.String())
 }
diff --git a/proposer/proposer.go b/proposer/proposer.go
index 7a5015806..942baca63 100644
--- a/proposer/proposer.go
+++ b/proposer/proposer.go
@@ -316,10 +316,6 @@ func (p *Proposer) sendTxListByBlobTx(ctx context.Context, txListBytes []byte) (
 	if err != nil {
 		return nil, err
 	}
-	// Wait until blob tx is mined.
-	if _, err := bind.WaitMined(ctx, p.rpc.L1, tx); err != nil {
-		return nil, err
-	}
 
 	return tx, nil
 }
@@ -327,6 +323,7 @@ func (p *Proposer) sendTxListByBlobTx(ctx context.Context, txListBytes []byte) (
 func (p *Proposer) sendProposeBlockTxWithBlobHash(
 	ctx context.Context,
 	blobHash common.Hash,
+	txListSize *big.Int,
 	nonce *uint64,
 	assignment *encoding.ProverAssignment,
 	assignedProver common.Address,
@@ -390,7 +387,7 @@ func (p *Proposer) sendProposeBlockTxWithBlobHash(
 		AssignedProver:    assignedProver,
 		ExtraData:         rpc.StringToBytes32(p.ExtraData),
 		TxListByteOffset:  common.Big0,
-		TxListByteSize:    common.Big0,
+		TxListByteSize:    txListSize,
 		BlobHash:          blobHash,
 		CacheBlobForReuse: false,
 		ParentMetaHash:    parentMetaHash,
@@ -522,8 +519,9 @@ func (p *Proposer) ProposeTxList(
 	var (
 		isReplacement bool
 		tx            *types.Transaction
+		blobTx        *types.Transaction
 	)
-	if err := backoff.Retry(
+	if err = backoff.Retry(
 		func() error {
 			if ctx.Err() != nil {
 				return nil
@@ -531,42 +529,32 @@ func (p *Proposer) ProposeTxList(
 
 			// Send tx list by blob tx.
 			if p.BlobAllowed {
-				blobTx, err := p.sendTxListByBlobTx(ctx, txListBytes)
+				blobTx, err = p.sendTxListByBlobTx(ctx, txListBytes)
 				if err != nil {
-					return nil
+					return err
 				}
-				if tx, err = p.sendProposeBlockTxWithBlobHash(
+				tx, err = p.sendProposeBlockTxWithBlobHash(
 					ctx,
 					blobTx.BlobHashes()[0],
+					big.NewInt(int64(len(txListBytes))),
 					nonce,
 					assignment,
 					proverAddress,
 					maxFee,
 					isReplacement,
-				); err != nil {
-					log.Warn("Failed to send taikoL1.proposeBlock blob transaction", "error", encoding.TryParsingCustomError(err))
-					if strings.Contains(err.Error(), core.ErrNonceTooLow.Error()) {
-						return nil
-					}
-					if strings.Contains(err.Error(), txpool.ErrReplaceUnderpriced.Error()) {
-						isReplacement = true
-					} else {
-						isReplacement = false
-					}
-					return err
-				}
-				return nil
+				)
+			} else {
+				tx, err = p.sendProposeBlockTx(
+					ctx,
+					txListBytes,
+					nonce,
+					assignment,
+					proverAddress,
+					maxFee,
+					isReplacement,
+				)
 			}
-
-			if tx, err = p.sendProposeBlockTx(
-				ctx,
-				txListBytes,
-				nonce,
-				assignment,
-				proverAddress,
-				maxFee,
-				isReplacement,
-			); err != nil {
+			if err != nil {
 				log.Warn("Failed to send taikoL1.proposeBlock transaction", "error", encoding.TryParsingCustomError(err))
 				if strings.Contains(err.Error(), core.ErrNonceTooLow.Error()) {
 					return nil
@@ -597,9 +585,15 @@ func (p *Proposer) ProposeTxList(
 
 	ctxWithTimeout, cancel := context.WithTimeout(ctx, p.WaitReceiptTimeout)
 	defer cancel()
-
-	if _, err := rpc.WaitReceipt(ctxWithTimeout, p.rpc.L1, tx); err != nil {
-		return err
+	if blobTx != nil {
+		if _, err = bind.WaitMined(ctxWithTimeout, p.rpc.L1, blobTx); err != nil {
+			return err
+		}
+	}
+	if tx != nil {
+		if _, err = rpc.WaitReceipt(ctxWithTimeout, p.rpc.L1, tx); err != nil {
+			return err
+		}
 	}
 
 	log.Info("📝 Propose transactions succeeded", "txs", txNum)
diff --git a/proposer/proposer_test.go b/proposer/proposer_test.go
index c15de7aa8..e3b3da671 100644
--- a/proposer/proposer_test.go
+++ b/proposer/proposer_test.go
@@ -203,6 +203,7 @@ func (s *ProposerTestSuite) TestSendProposeBlockTx() {
 		newTx, err = s.p.sendProposeBlockTxWithBlobHash(
 			ctx,
 			blobTx.BlobHashes()[0],
+			big.NewInt(int64(len(encoded))),
 			&nonce,
 			signedAssignment,
 			proverAddress,