Donation script from the BITBOX 5-15-18 hackathon donation 1 BCH each to the Bitcoin Cash Fun and Bitcoin ABC.

hackathon-donation.js

let change = BITBOX.HDNode.fromXPriv("my-x-priv");

// get the cash address
let cashAddress = BITBOX.HDNode.toCashAddress(change);

BITBOX.Address.utxo('bitcoincash:qprjht8an8quhwnymrvcnnhs3eca4accx5rdsp0clh').then((result) => {
  console.log(result);

  // instance of transaction builder
  let transactionBuilder = new BITBOX.TransactionBuilder('bitcoincash');
  // original amount of satoshis in vin
  
  let originalAmount = result[0].satoshis;
  
  // index of vout
  let vout = result[0].vout;
  
  // txid of vout
  let txid = result[0].txid;
  
  // add input with txid and index of vout
  transactionBuilder.addInput(txid, vout);
  
  // get byte count to calculate fee. paying 1 sat/byte
  let byteCount = BITBOX.BitcoinCash.getByteCount({ P2PKH: 1 }, { P2PKH: 2 });
  
  // amount to send to receiver. It's the original amount - 1 sat/byte for tx size
  let sendAmount = originalAmount - byteCount;

  // BCF
  transactionBuilder.addOutput('bitcoincash:ppfla28mmaezfhyfs9adupafnzlyy5xteqrr2vamtt', sendAmount / 2);

  // ABC 
  transactionBuilder.addOutput('bitcoincash:qqeht8vnwag20yv8dvtcrd4ujx09fwxwsqqqw93w88', sendAmount / 2);
  
  // keypair
  let keyPair = BITBOX.HDNode.toKeyPair(change);
  
  // sign w/ HDNode
  let redeemScript;
  transactionBuilder.sign(0, keyPair, redeemScript, transactionBuilder.hashTypes.SIGHASH_ALL, originalAmount);
  
  // build tx
  let tx = transactionBuilder.build();
  // output rawhex
  let hex = tx.toHex();
  
  // sendRawTransaction to running BCH node
  BITBOX.RawTransactions.sendRawTransaction(hex).then((result) => { console.log(result); }, (err) => { console.log(err); });
}, (err) => { console.log(err);
});