Bitcoin Optech: Newsletter #425 Recap

<p>Gustavo Flores Echaiz and Brandon Black are joined by Matt Morehouse to discuss <a href="https://bitcoinops.org/en/newsletters/2026/10/02/">⁠Newsletter #425⁠</a>.</p><p><br></p><p><strong>News</strong></p><p>● Disclosure of two DoS vulnerabilities in Eclair (1:01) </p><p>● Proposal for wallet label synchronization (15:25) </p><p><br></p><p><strong>Changing consensus</strong></p><p>● Continued discussion of PQC output types (21:36) </p><p>● Block-wide signature aggregation via SNARKs (27:17) </p><p>● Bounds on chain length with BIP54 time warp fixes (35:19) </p><p>● Comparing covenant proposals for vaults (39:23) </p><p>● Depots for probabilistic Lightning channels (43:18) </p><p><br></p><p><strong>Releases and release candidates</strong></p><p>● LND v0.21.4-beta.rc1 (48:40) </p><p>● LND v0.20.5-beta.rc1 (50:29) </p><p><br></p><p><strong>Notable code and documentation changes</strong></p><p>● Bitcoin Core #29278 (51:55) </p><p>● Bitcoin Core #35984 (53:43) </p><p>● Bitcoin Core #35301 (56:45) </p><p>● Bitcoin Core #36312 (58:51) </p><p>● Bitcoin Core #36284 (1:01:59) </p><p>● Bitcoin Core #35752 (1:07:47) </p><p>● Bitcoin Core #35813 (1:11:46) </p><p>● BIPs #2276 (1:13:07) </p><p>● LDK #4993 (1:16:39) </p><p>● LND #11173 (1:19:40) </p><p>● LND #11190 (1:22:12) </p><p>● LND #11212 (1:27:37) </p><p>● LND #11258 (1:29:58) </p>