bitcoinjs-lib/ts_src/templates/pubkeyhash/output.ts

// OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG

import * as bscript from '../../script';
import { OPS } from '../../script';

export function check(script: Buffer | Array<number | Buffer>): boolean {
  const buffer = bscript.compile(script);

  return (
    buffer.length === 25 &&
    buffer[0] === OPS.OP_DUP &&
    buffer[1] === OPS.OP_HASH160 &&
    buffer[2] === 0x14 &&
    buffer[23] === OPS.OP_EQUALVERIFY &&
    buffer[24] === OPS.OP_CHECKSIG
  );
}
check.toJSON = function() {
  return 'pubKeyHash output';
};