Update Blockhash

import { Connection, clusterApiUrl, VersionedTransaction, Keypair } from '@solana/web3.js';
import walletSecret from "/Users/metasal/.config/solana/id.json";

const wallet = Keypair.fromSecretKey(new Uint8Array(walletSecret));
const base64Tx = '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';

const connection = new Connection('https://velvet-hw7q70-fast-mainnet.helius-rpc.com', 'confirmed');

const analyzeAndUpdateVersionedTransaction = async (base64Tx) => {
    try {

        // Decode the Base64 string into a Buffer
        const serializedTx = Buffer.from(base64Tx, 'base64');
        const versionedTx = VersionedTransaction.deserialize(serializedTx);


        // Get a new recent blockhash
        const { blockhash } = await connection.getLatestBlockhash('confirmed');
        console.log('Old Blockhash:', versionedTx.message.recentBlockhash);
        console.log('New Blockhash:', blockhash);

        // Update the recent blockhash in the message
        versionedTx.message.recentBlockhash = blockhash;

        // Re-sign the transaction with the wallet
        versionedTx.sign([wallet]);

        // Simulate the transaction with the updated blockhash and signatures
        const simulation = await connection.simulateTransaction(versionedTx);
        console.log('Simulation Result:', simulation);

        // Serialize the updated transaction back to base64
        const updatedSerializedTx = versionedTx.serialize();
        const updatedBase64Tx = Buffer.from(updatedSerializedTx).toString('base64');
        console.log('\nUpdated Transaction (Base64):', updatedBase64Tx);

        const signature = await connection.sendTransaction(versionedTx, {
            skipPreflight: false,
            preflightCommitment: 'confirmed'
        });
        console.log('Transaction Signature:', signature);

    } catch (error) {
        console.error('Error analyzing or updating transaction:', error);
    }
}

analyzeAndUpdateVersionedTransaction(base64Tx);