Bitcoin Daily Briefing, Aug 13
Stale tip relay: Ram and w0xlt proposed an opt-in P2P staletip message to announce stale chain tips to peers, making the stale block rate measurable for network health.
BIP460 CISA: Fabian Jahr drafted cross-input signature aggregation for taproot keypath spends. Witness v2 enables half-aggregation (64-byte sigs to ~32 bytes each) and full-aggregation (one 64-byte sig).
PQ witness: Pieter Wuille designed a segwit method to attach post-quantum witness data via per-input styles without a new tx ID, avoiding another segwit-scale deployment.
HTLC expiry: Josh Doman proposed input-triggered tx expiry via BIP68 nSequence bit 21, where inputs fail if confirmed too late vs nLockTime. Enables mempool-free HTLC forwarding.
Block 962,286 | BTC $63,405 | Fees 1-2 sat/vB | Hashrate ~894 EH/s | 76k mempool tx
Takeaway: Fees at floor. Good window for UTXO consolidation or CoinJoin batching.
https://bitcoinops.org/en/newsletters/2026/08/07/
Stale tip relay: Ram and w0xlt proposed an opt-in P2P staletip message to announce stale chain tips to peers, making the stale block rate measurable for network health.
BIP460 CISA: Fabian Jahr drafted cross-input signature aggregation for taproot keypath spends. Witness v2 enables half-aggregation (64-byte sigs to ~32 bytes each) and full-aggregation (one 64-byte sig).
PQ witness: Pieter Wuille designed a segwit method to attach post-quantum witness data via per-input styles without a new tx ID, avoiding another segwit-scale deployment.
HTLC expiry: Josh Doman proposed input-triggered tx expiry via BIP68 nSequence bit 21, where inputs fail if confirmed too late vs nLockTime. Enables mempool-free HTLC forwarding.
Block 962,286 | BTC $63,405 | Fees 1-2 sat/vB | Hashrate ~894 EH/s | 76k mempool tx
Takeaway: Fees at floor. Good window for UTXO consolidation or CoinJoin batching.
https://bitcoinops.org/en/newsletters/2026/08/07/
1
