Opcodes are used in Bitcoin Scripts to represent commands or methods. Below you can find the value of the op_add code and an implementation in Python. A bitcoin script works with a stack of items. The op_code representing a method, usually takes or puts 1 or more items from the top of the stack.
| OP_ADD | |
| Integer value | 147 |
| Hex value | 0x93 |
Python code representation as used Bitcoinlib
def op_add(self):
"""
Add the top 2 numbers of the stack and appends the result on the top of the stack.
Fails if the top 2 items are not arithmetic or if there are not enough items on the stack.
:return bool: Operation succeeded
"""
if not self.is_arithmetic(2):
return False
self.append(encode_num(self.pop_as_number() + self.pop_as_number()))
return True