Bitcoin Optech: Newsletter #251 Recap

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Carla Kirk-Cohen, Severin Bühler, and Dan Gould to discuss Newsletter #251.

News

• Testing HTLC endorsement (1:33)
• Request for feedback on proposed specifications for LSPs (14:52)
• Challenges with zero-conf channels when dual funding (20:59)
• Advanced payjoin applications (24:51)
• Summaries of Bitcoin Core developers in-person meeting (37:35)

Waiting for confirmation #1: why do we have a mempool? (51:07)

Releases and release candidates

• Libsecp256k1 0.3.2 (1:04:21)
• Core Lightning 23.05rc2 (1:05:07)
• Bitcoin Core 23.2rc1 (1:05:20)
• Bitcoin Core 24.1rc3 (1:05:20)
• Bitcoin Core 25.0rc2 (1:05:20)

Notable code and documentation changes

• Bitcoin Core #26076 (1:06:10)
• Bitcoin Core #27608 (1:07:20)
• LDK #2286 (1:08:27)
• LDK #1794 (1:08:47)
• Rust Bitcoin #1844 (1:09:08)
• Rust Bitcoin #1837 (1:11:33)
• BOLTs #1075 (1:12:04)