code: func isScriptHash(pops []parsedOpcode) bool {
  	return len(pops) == 3 &&
  		pops[0].opcode.value == OP_HASH160 &&
  		pops[1].opcode.value == OP_DATA_20 &&
  		pops[2].opcode.value == OP_EQUAL
  }
docs: // isScriptHash returns true if the script passed is a pay-to-script-hash
  // transaction, false otherwise.