Opcodes
The visualization below includes an explanation of the most commonly used opcodes in standard transactions.
Understanding opcodes
Getting to know the opcode in this visualization helps you understand most standard bitcoin transactions
OP_CHECKSIG (0xAC)
Verifies a signature against a public key and the transaction data. If the signature is valid, it pushes 1 onto the stack; otherwise, it pushes 0.
Example
<sig> <pubkey> OP_CHECKSIG
Categories of opcodes
Key Characteristics
- Opcodes are typically one byte in size.
- Some opcodes have been disabled for security reasons.