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Bitcoin Optech: Newsletter #361 Recap

Bitcoin Optech: Newsletter #361 Recap

Update: 2025-07-10
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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 )

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Bitcoin Optech: Newsletter #361 Recap

Bitcoin Optech: Newsletter #361 Recap

Bitcoin Optech