Bitcoin Articles

BIP 141 transaction weight explained for miners: calculate base size, total size, virtual bytes, witness discount and four-million-unit block limits.

BIP 125 replace by fee made simple. See what the proposal changes, its current status and what it means for Bitcoin users and operators.

BIP 131 coalescing transactions explained as a closed hard-fork proposal using wildcard inputs to aggregate same-script UTXOs and their risks.

BIP 75 encrypted address exchange explained: understand sender authentication, ECDH privacy, store-and-forward servers and legacy BIP 70 risk.

BIP 124 HD script templates explained: review deterministic key groups, lexicographic sorting, placeholders and why the incomplete proposal closed.

BIP 83 dynamic HD key trees explained: understand reserved child zero, nested path notation, application mappings and safe wallet recovery.

BIP 140 normalized TXIDs explained: learn how the closed proposal removed signature scripts, introduced OP_CHECKSIGEX and tracked two identities.

BIP9 miner signalling explained through DEFINED, STARTED, LOCKED_IN, ACTIVE and FAILED states, including retarget windows and pool checks.

BIP 107 dynamic block size explained as a closed hard-fork proposal with a staged runway, 4,032-block checks and 10% increases.

BIP 132 committee acceptance explained as a closed governance proposal using four stakeholder segments, timed reviews and a 70% threshold.

BIP 122 blockchain URI explained: learn its chain IDs, transaction, block and address paths, parser boundaries and safe explorer handling.

BIP 123 classification explained: distinguish consensus, peer services, API/RPC and application layers and apply the right interoperability evidence.