Protocol & Consensus • Estimated 75m

OP_CAT

protocol.op-cat

OP_CAT concatenates stack elements and expands Script programmability. It is frequently discussed as a primitive for covenant and introspection-style constructions.

Open visual node page • Browse the concept library

Curated resources (3)

• Opcode Explained: OP_CAT (article) Byte-level semantics and execution behavior.
• Bitcoin Optech Topic: OP_CAT (article) Activation and policy discussion.
• Covenants.info: OP_CAT (article) How OP_CAT fits into current covenant research.

Direct prerequisites (1)

• Bitcoin Script

Direct dependents (1)

• The Great Script Restoration

Canonical site description: Interactive Bitcoin knowledge graph with prerequisites, curated resources, and structured topic pages.