Sign and Broadcast Transaction

To sign and broadcast a transaction to the Ethereum network, follow these steps:

Retrieve unsigned serialized transactions in Base64 encrypted format.

Sign and broadcast the transaction using the following code:

require("dotenv").config();
const ethers = require("ethers");

async function signAndBroadcast() {
  console.log("Started");

  // Enter the serialized transaction
  const rawTransaction = process.env.RAW_TRANSACTION;

  // Enter the private key of the address used to transfer the stake amount
  const privateKey = process.env.PRIVATE_KEY;

  // Enter the selected RPC URL
  const rpcURL = process.env.RPC_URL;

  // Initialize the provider using the RPC URL
  const provider = new ethers.providers.JsonRpcProvider(rpcURL);

  // Initialize a new Wallet instance
  const wallet = new ethers.Wallet(privateKey, provider);

  // Parse the raw transaction
  const tx = ethers.utils.parseTransaction(rawTransaction);

  tx.nonce = await provider.getTransactionCount(wallet.address);

  // Enter the max fee per gas and prirorty fee
  tx.maxFeePerGas = ethers.utils.parseUnits(
    process.env.MAX_FEE_PER_GAS_IN_GWEI,
    "gwei"
  );
  tx.maxPriorityFeePerGas = ethers.utils.parseUnits(
    process.env.MAX_PRIORITY_FEE_IN_GWEI,
    "gwei"
  );

  // Sign the transaction
  const signedTransaction = await wallet.signTransaction(tx);

  // Send the signed transaction
  const transactionResponse = await provider.sendTransaction(signedTransaction);

  return transactionResponse;
}

signAndBroadcast()
  .then((transactionResponse) => {
    console.log(
      "Transaction broadcasted, transaction hash:",
      transactionResponse.hash
    );
  })
  .catch((error) => {
    console.error("Error:", error);
  })
  .finally(() => {
    console.log("Finished");
  });

What's Next?