Bitcoin Optech

Toby Sharp (@bitcoindudebro) joined Optech to discuss Newsletter #402: News ● Hornet Node's declarative executable specification of Bitcoin consensus rules (1:02) ● Onion message jamming in the Lightning Network (23:22) Selected Q&A from Bitcoin Stack Exchange ● Why did BIP342 replace CHECKMULTISIG with a new opcode, instead of just removing FindAndDelete from it? (40:53) ● Does SIGHASH_ANYPREVOUT commit to the tapleaf hash or the full taproot merkle path? (43:28) ● What does the BIP86 tweak guarantee in a MuSig2 Lightning channel, beyond address format? (45:23) Releases and release candidates ● Bitcoin Core 31.0 (47:10) ● Core Lightning 26.04 (54:26) ● LND 0.21.0-beta.rc1 (56:29) Notable code and documentation changes ● Bitcoin Core #33477 (57:55) ● Bitcoin Core #35006 (1:02:26) ● BIPs #1895 (1:04:31) ● BIPs #2142 (1:12:47) ● LDK #4555 (1:15:03) ● LND #10713 (1:16:23) ● LND #10754 (1:18:02)

Bitcoin Optech newsletter #403 is here: - describes research around using binary fuse filters as an alternative to the GCS used in compact block filters - links to an idea for post-quantum HD wallets with fallback SPHINCS keys - summarizes discussion of a post-quantum output type - examines a proposal to embed post-quantum keys in tapscript without consensus changes - summarizes results of a BIP54 demonstration of slow blocks on signet - links to work on post-quantum BIP86 recovery using zk-STARK proofs of BIP32 seeds - Optech Newsletter #403 Podcast

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

Olaoluwa Osuntokun (@roasbeef) posted on the Bitcoin-Dev mailing list his project to demonstrate zk-STARK recovery of quantum-vulnerable coins secured by keys derived using BIP32... #post-quantum-bip86-recovery-using-zk-stark-proofs-of-bip32-seeds" target="_blank" rel="nofollow noopener">bitcoinops.org/en/newsletters…

Welcome to our live show! x.com/i/broadcasts/1…

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

Selected Q&A from Bitcoin Stack Exchange - Why did BIP342 replace CHECKMULTISIG with a new opcode, instead of just removing FindAndDelete from it? - Does SIGHASH_ANYPREVOUT commit to the tapleaf hash or the full taproot merkle path? - What does the BIP86 tweak guarantee in a MuSig2 Lightning channel, beyond address format? #selected-qa-from-bitcoin-stack-exchange" target="_blank" rel="nofollow noopener">bitcoinops.org/en/newsletters…

Bitcoin Optech newsletter #402 is here: - describes work on a declarative executable specification of consensus rules - summarizes a discussion about onion message jamming in the Lightning Network - summarizes popular Q&A from Stack Exchange - Optech Newsletter #402 Podcast

You can listen on our website: bitcoinops.org/en/podcast/202… Spotify: open.spotify.com/episode/4A7d3n… Apple Podcasts: podcasts.apple.com/us/podcast/bit…

Remix7531 and Luis Schwab (@luisschwab_) joined Optech to discuss Newsletter #401: - Nested MuSig2 for k-of-n multisignature Lightning nodes - Formal verification of secp256k1 modular scalar multiplication - Changes to services and client software including Utreexo software and others - And more

Welcome to our live show! x.com/i/broadcasts/1…