diff --git a/blockchain/blockchain.go b/blockchain/blockchain.go
index 4ff64e389e..e86ad34c95 100644
--- a/blockchain/blockchain.go
+++ b/blockchain/blockchain.go
@@ -377,11 +377,7 @@ func (b *Blockchain) Store(block *core.Block, blockCommitments *core.BlockCommit
 		}
 
 		if blockVer.LessThan(core.Ver0_13_2) {
-			// temporary hack
-			if block.SequencerAddress == nil {
-				block.SequencerAddress = &felt.Zero
-			}
-			if err := ComputeAndStoreP2PHash(txn, block, stateUpdate.StateDiff); err != nil {
+			if err := computeAndStoreP2PHash(txn, block, stateUpdate.StateDiff); err != nil {
 				return err
 			}
 		}
@@ -408,7 +404,7 @@ func (b *Blockchain) VerifyBlock(block *core.Block) error {
 	})
 }
 
-func ComputeAndStoreP2PHash(txn db.Transaction, block *core.Block, stateDiff *core.StateDiff) error {
+func computeAndStoreP2PHash(txn db.Transaction, block *core.Block, stateDiff *core.StateDiff) error {
 	hash, _, err := core.Post0132Hash(block, stateDiff)
 	if err != nil {
 		return err
diff --git a/core/block.go b/core/block.go
index ab0cf01555..112c80f78d 100644
--- a/core/block.go
+++ b/core/block.go
@@ -216,21 +216,42 @@ func Post0132Hash(b *Block, stateDiff *StateDiff) (*felt.Felt, *BlockCommitments
 
 	concatCounts := concatCounts(b.TransactionCount, b.EventCount, sdLength, b.L1DAMode)
 
+	// temporary hack
+	seqAddr := &felt.Zero
+	gasPriceStrk := &felt.Zero
+	l1DataGasPricrInWei := &felt.Zero
+	l1DataGasPriceInFri := &felt.Zero
+
+	if b.SequencerAddress != nil {
+		seqAddr = b.SequencerAddress
+	}
+	if b.GasPriceSTRK != nil {
+		gasPriceStrk = b.GasPriceSTRK
+	}
+	if b.L1DataGasPrice != nil {
+		if b.L1DataGasPrice.PriceInWei != nil {
+			l1DataGasPricrInWei = b.L1DataGasPrice.PriceInWei
+		}
+		if b.L1DataGasPrice.PriceInFri != nil {
+			l1DataGasPriceInFri = b.L1DataGasPrice.PriceInFri
+		}
+	}
+
 	return crypto.PoseidonArray(
 			new(felt.Felt).SetBytes([]byte("STARKNET_BLOCK_HASH0")),
 			new(felt.Felt).SetUint64(b.Number),    // block number
 			b.GlobalStateRoot,                     // global state root
-			b.SequencerAddress,                    // sequencer address
+			seqAddr,                               // sequencer address
 			new(felt.Felt).SetUint64(b.Timestamp), // block timestamp
 			concatCounts,
 			sdCommitment,
-			txCommitment,   // transaction commitment
-			eCommitment,    // event commitment
-			rCommitment,    // receipt commitment
-			b.GasPrice,     // gas price in wei
-			b.GasPriceSTRK, // gas price in fri
-			b.L1DataGasPrice.PriceInWei,
-			b.L1DataGasPrice.PriceInFri,
+			txCommitment, // transaction commitment
+			eCommitment,  // event commitment
+			rCommitment,  // receipt commitment
+			b.GasPrice,   // gas price in wei
+			gasPriceStrk, // gas price in fri
+			l1DataGasPricrInWei,
+			l1DataGasPriceInFri,
 			new(felt.Felt).SetBytes([]byte(b.ProtocolVersion)),
 			&felt.Zero,   // reserved: extra data
 			b.ParentHash, // parent block hash