P2PKH script for sending from 1 to 999 addresses

1-to-many-p2pkh.js

let mnemonic = '';

let seed = BITBOX.Mnemonic.mnemonicToSeedBuffer(mnemonic);

let master = BITBOX.HDNode.fromSeedBuffer(seed, 'bitcoincash');

let byteCount = BITBOX.BitcoinCash.getByteCount({ P2PKH: 1 }, { P2PKH: 1000 });

let node = master.derivePath(`m/44'/145'/0'/0/0`);

let keyPair = node.keyPair;

let originalAmount = 4178855;

let amount = originalAmount - byteCount;

let txid = '';

let txb = new BITBOX.TransactionBuilder('bitcoincash');

txb.addInput(txid, 1, keyPair);

for(let i = 0; i < 999; i++) {
  let childNode = master.derivePath(`m/44'/145'/0'/0/${i+1}`);
  txb.addOutput(BITBOX.HDNode.toLegacyAddress(childNode), Math.floor(amount / 1000));
}

txb.sign(0, originalAmount);

let tx = txb.build();

let hex = tx.toHex();

BITBOX.RawTransactions.sendRawTransaction(hex).then((result) => { console.log(result); }, (err) => { console.log(err); });