Bitcoin Cash P2PKH input -> nulldata output example w/ BITBOX

nulldata-output.js

let mnemonic = '';

// root seed buffer
let rootSeed = BITBOX.Mnemonic.toSeed(mnemonic);

// master HDNode
let masterHDNode = BITBOX.HDNode.fromSeed(rootSeed, 'bitcoincash');

// HDNode of BIP44 account
let account = BITBOX.HDNode.derivePath(masterHDNode, "m/44'/145'/0'");

// derive the first external change address HDNode which is going to spend utxo
let node = BITBOX.HDNode.derivePath(account, "432/123");

// HDNode to cashAddress
let cashAddress = BITBOX.HDNode.toCashAddress(node);

// create instance of Transaction Builder class
let transactionBuilder = new BITBOX.TransactionBuilder();

// set original amount, txid and vout
let originalAmount = 17602;
let txid = '59c8960607a0cc4e3c8ce45d71ee1671e3d76d9b135de761ddac26360ac36302';
let vout = 0;

// add input
transactionBuilder.addInput(txid, vout);

// set fee and send amount
let fee = 250;
let sendAmount = originalAmount - fee;

// add output to send funds to
transactionBuilder.addOutput(cashAddress, sendAmount);

// encode data as null data output
let data = "BCHForEveryone";
let buf = BITBOX.Script.nullData.output.encode(Buffer.from(data, 'ascii'));

// add null data output and send it 0 satoshis
transactionBuilder.addOutput(buf, 0);

// HDNode to keypair
let key = BITBOX.HDNode.toKeyPair(node);

// empty redeemScript var
let redeemScript

// sign input
transactionBuilder.sign(0, key, redeemScript, transactionBuilder.hashTypes.SIGHASH_ALL, originalAmount)

// build to hex
let hex = transactionBuilder.build().toHex()
console.log(hex)

// POST to BCH network
BITBOX.RawTransactions.sendRawTransaction(hex).then((result) => { console.log(result); }, (err) => { console.log(err); });
// 7f55cc793477a426ec1bb30b39322d692bafd41b44c4e7ac145c6702f0e4192e