Bitcoin Optech: Newsletter #377 Recap

Gustavo Flores Echaiz and Mike Schmidt are joined by Abubakar Sadiq Ismail and Carla Kirk-Cohen to discuss ⁠Newsletter #377⁠ (https://bitcoinops.org/en/newsletters/2025/10/24/).

News ● Detecting block template feerate increases using cluster mempool (1:06) ● Channel jamming mitigation simulation results and updates (9:28)

Changes to services and client software ● BULL wallet launches (37:22) ● Sparrow 2.3.0 released (39:40)

Releases and release candidates ● Core Lightning 25.09.1 (40:47) ● Bitcoin Core 28.3 (41:18)

Notable code and documentation changes ● Bitcoin Core #33157 (43:00) ● Bitcoin Core #29675 (45:56) ● Bitcoin Core #33517 (46:59) ● Eclair #2792 (49:01) ● LDK #4122 (51:01) ● LND #9868 (52:37) ● LND #10273 (53:48)