Bitcoin Optech: Newsletter #361 Recap
July 10, 2025·2h 19m·w/ Sanket Kanjalkar, Jonas Nick, Tadge Dryja, Steven Roose, Brandon Black, Mark “Murch” Erhardt, Mike Schmidt
Show Notes
Sanket Kanjalkar, Jonas Nick, Tadge Dryja, Steven Roose, and Brandon Black join Mark “Murch” Erhardt and Mike Schmidt to discuss Newsletter #361.
News
● Separating onion message relay from HTLC relay (2:06)
Changing consensus
● CTV+CSFS advantages for PTLCs (5:45)
● Vault output script descriptor (15:21)
● Continued discussion about CTV+CSFS advantages for BitVM (22:57)
● Open letter about CTV and CSFS (27:59)
● OP_CAT enables Winternitz signatures (1:12:27)
● Commit/reveal function for post-quantum recovery (1:22:46)
● OP_TXHASH variant with support for transaction sponsorship (1:53:31)
Notable code and documentation changes
● Bitcoin Core #32540 (2:13:29)
● Bitcoin Core #32638 (2:14:47)
● Bitcoin Core #32819 (2:15:25)
● LDK #3618 (2:17:41)
