Bitcoin Upgrades

SIGHASH_ANYPREVOUT (OP_APO), proposed in BIP-118, modifies Bitcoin’s signature hashing to allow inputs to commit to scriptPubKey without specific UTXO...

OP_CAT, proposed in BIP-347 and activated on signet in 2024, re-enables concatenation of stack elements in Bitcoin Script, previously disabled by Sato...

OP_CHECKTEMPLATEVERIFY (OP_CTV), proposed in BIP-119, is a covenant opcode enforcing transaction structure constraints, enabling payment channels, vau...

OP_TXHASH, a proposed opcode, enables flexible transaction introspection by hashing specific transaction fields, supporting covenants and smart contra...

OP_VAULT, proposed in BIP-345, introduces specialized opcodes (OP_VAULT, OP_VAULT_RECOVER) for secure custody vaults, allowing delayed spending with r...

Schnorr Signatures, activated with Taproot in November 2021, enhance Bitcoin’s efficiency and privacy by enabling signature aggregation and complex sc...

SegWit, activated in August 2017, restructures Bitcoin transaction data to increase block capacity, fix transaction malleability, and enable Layer 2 s...

Taproot, activated in November 2021 via BIPs 340-342, introduces Schnorr signatures, Pay-to-Taproot (P2TR) outputs, and Tapscript, enhancing privacy, ...

Taproot Leaf Update Verify (TLUV), an experimental opcode proposal, allows dynamic modification of Taproot script trees, enabling advanced covenants a...