Bitcoin Optech #273: Payments Contingent on Arbitrary Computation

Bitcoin Optech newsletter #273 is here:

Antoine Riard posted to the Bitcoin-Dev and Lightning-Dev mailing list the full disclosure of an issue he had previously responsibly disclosed to developers working on the Bitcoin protocol and various popular LN implementations…Robin Linus posted to the Bitcoin-Dev mailing list a paper he’s written about BitVM, a combination of methods that allows bitcoins to be paid to someone who successfully proves that an arbitrary program executed successfully. Notably, this is possible on Bitcoin today – no consensus change is required…Andrew Chow posted to the Bitcoin-Dev mailing list with a draft BIP, partly on prior work by Sanket Kanjalkar, for adding several fields to all versions of PSBTs for the “keys, public nonces, and partial signatures produced with MuSig2.”Bitcoin Core 24.2rc2 and Bitcoin Core 25.1rc1 are release candidates for maintenance versions of Bitcoin Core.”Bitcoin Optech will host an audio recap discussion of this newsletter with special guests Robin Linus and Antoine Poinsot on Twitter Spaces Thursday at 15:00 UTC. Join us to discuss or ask questions!”

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