Bitcoin Improvement Proposals Articles

BIP 88 guide covering its Complete informational status, path constraints, alternatives, ranges, hardened markers, matching, parsing and wallet recovery safety.

BIP 85 guide covering its Deployed informational status, hardened paths, HMAC-SHA512 transformation, application indexes, backup concentration and test vectors.

BIP 87 guide covering its Complete application status, m/87 hierarchy, descriptors, accounts, receiving and change branches, gap limit, backups and recovery.

BIP 339 wtxid relay explained: see why witness-aware transaction identifiers improve Bitcoin peer announcements, requests and rejection handling.

BIP 340 guide covering 64-byte Schnorr signatures, x-only public keys, tagged hashes, nonce safety, batch verification, Taproot deployment and testing.

Taproot annex explained from BIP341: learn how the 0x50 witness element is detected, signed, charged transaction weight and reserved for upgrades.

BIP 119 guide covering its Draft soft-fork status, transaction-template hash, OP_NOP4 semantics, covenant uses, validation costs, risks and safe evaluation.

BIP 330 Erlay explained: see how transaction-set reconciliation, short IDs and sketches can reduce Bitcoin node announcement bandwidth.

BIP 301 guide covering its Draft soft-fork status, sidechain block bids, BMM Accept and Request commitments, one-winner rule, miner incentives and risks.

Taproot control blocks explained: verify the internal key, leaf version, parity bit and Merkle path that prove a revealed script belongs to an output.

BIP 78 Payjoin explained: see how receivers add inputs, break ownership heuristics, enforce sender checks and secure the interactive endpoint.

BIP 325 Signet guide covering challenge scripts, coinbase commitments, virtual transactions, proof of work, network identity, validation and integration testing.