Brandon Black

Author of 4 BIPs.

BIP 346: OP_TXHASH: Draft. Proposes a new script instruction, OP_TXHASH, that lets a script look at selected details of the transaction trying to spend it, such as its outputs or amounts. Combined with a way to check…
BIP 348: CHECKSIGFROMSTACK: Draft. Adds an instruction letting Bitcoin scripts verify a signature over any piece of data, not just over the spending transaction itself. That opens the door to things like delegating spending rights,…
BIP 349: OP_INTERNALKEY: Draft. Adds a small script instruction that places a Taproot output's 'internal key', the main key behind the output, onto the script's working data. It saves space by avoiding repeating that key inside…
BIP 442: OP_PAIRCOMMIT: Draft. Proposes OP_PAIRCOMMIT, a script instruction that combines two pieces of data into a single secure fingerprint (hash). This compact way of committing to data could make certain smart contracts and…