| latest-revision | original-author | created | status | title | contributors | type | description | discussions-to | category |
|---|---|---|---|---|---|---|---|---|---|
2019-01-27T00:00:00.000Z |
Ryan Shea (ryan-shea) |
2019-01-01T00:00:00.000Z |
Accepted |
Opcodes |
Ryan Shea (ryan-shea) |
article |
GitHub URL |
bitcoin-basics |
Operation codes originate from the Bitcoin Script language which pushes data or performs functions within a pubkey script or signature script.
A pubkey script is included in transaction outputs and sets the conditions that must be fulfilled for those satoshis to be spent. Data for fulfilling the conditions can be provided in a signature script. Pubkey Scripts are called a scriptPubKey in code.
A signature script is generated by a spender. Signature scripts are almost always used as variables to satisfy a pubkey script. Signature Scripts are called scriptSig in code.