Bitcoin Optech: Newsletter #351 Recap

Mark “Murch” Erhardt and Mike Schmidt are joined by Jonas Nick and Salvatore Ingala to discuss Newsletter #351.

News

● Interactive aggregate signatures compatible with secp256k1 (0:50)

● Standardized backup for wallet descriptors (21:34)

Selected Q&A from Bitcoin Stack Exchange

● Practicality of half-aggregated schnorr signatures? (17:16)

● What's the largest size OP_RETURN payload ever created? (41:17)

● Non-LN explanation of pay-to-anchor? (43:29)

● Up-to-date statistics about chain reorganizations? (48:08)

● Are Lightning channels always P2WSH? (52:33)

● Child-pays-for-parent as a defense against a double spend? (53:40)

● What values does CHECKTEMPLATEVERIFY hash? (59:06)

● Why can't Lightning nodes opt to reveal channel balances for better routing efficiency? (59:32)

● Does post-quantum require hard fork or soft fork? (1:02:27)

Releases and release candidates

● LND 0.19.0-beta.rc3 (1:07:39)

Notable code and documentation changes

● Bitcoin Core #31247 (1:07:58)

● LDK #3601 (1:10:14)