batchETHScription.js

const ethers = require('ethers');

const privatekey = '0X_PRIVATE_KEY';
const provider = new ethers.JsonRpcProvider('ALCHEMY_OR_INFURA_KEY');
const wallet = new ethers.Wallet(privatekey, provider);

const addresses = [];

async function batchETHScribe() {
  let count = 0;
  for (const address in addresses) {
    const data = `data:,${count}-test`;
    
    const hex = ethers.hexlify(ethers.toUtf8Bytes(data));
    let tx = {
        to: address,
        value: 0,
        data: hex
    };
    const txn = await wallet.sendTransaction(tx);
    const rec = await txn.wait();
    console.log(rec);
    count++;
  }
}

(async () => {
  await batchETHScribe()
})();