Opcodes

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Opcodes

Overview
Operation codes originate from the Bitcoin Script language which pushes data or performs functions within a pubkey script or signature script.
Details
Pubkey 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.
Signature Script
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.
Resources
​Op codes list​
References
[1] https://bitcoin.org/en/glossary/op-code​

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