Opcodes

New opcodes. 3 proposals.

BIP 12: OP_EVAL: Closed. Proposed a new script command, OP_EVAL, that would let the receiver of coins define the conditions for spending them instead of the sender. It was abandoned over security concerns and replaced by…
BIP 17: OP_CHECKHASHVERIFY (CHV): Closed. A competing proposal to P2SH that would have added a script command, OP_CHECKHASHVERIFY, letting recipients set their own spending conditions. The community chose BIP 16 instead, and this approach…
BIP 18: hashScriptCheck: Complete. Another alternative to P2SH that would have restructured how transactions present their locking and unlocking scripts, committing to a hash of the spending script. It aimed to support complex…