bitcoinjs-lib/src/templates/scripthash/output.ts

// OP_HASH160 {scriptHash} OP_EQUAL

import * as bscript from '../../script'
const OPS = require('bitcoin-ops')

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

  return buffer.length === 23 &&
    buffer[0] === OPS.OP_HASH160 &&
    buffer[1] === 0x14 &&
    buffer[22] === OPS.OP_EQUAL
}
check.toJSON = function () { return 'scriptHash output' }