Opcodes · reserved · nop
OP_NOP4 (0xb3)
Does nothing; reserved for future upgrades. Standard relay policy rejects scripts that use it.
Verified
- Stack in → out
- ∅ → ∅
- Since
- Original Bitcoin script
- Cost
- Base instruction cost 100.
- Bitcoin status
- Proposed for Bitcoin (BTC)BIP-119 (OP_CHECKTEMPLATEVERIFY, draft) proposes to use OP_NOP4 in BTC.