Mike Schmidt

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)

@nvk @brian_trollz Yes all that good work from Bitcoin Core, but also indexes youtube.com/watch?v=F3ONZs…

@brian_trollz lots of amazing ppl, lots of best intentions. but, can't be ignored that wokeness pushed away alot of people and interest, lack of urgency on more basic user needs like indexer, bip39, etc...

Bitcoin Core does have a dysfunction. It's the lack of drive and leadership and willingness to continue pushing the Bitcoin protocol itself forward with improvements at the consensus level. Why does that dysfunction exist? Partially internal issues, and partially shit like a mob of deranged retards screaming Core is compromised because they will not act to censor users the retards don't like at the consensus level. Look in the mirror dumbshits. You are literally a cause of Core's dysfunction while you shriek and misdiagnose where it actually functions properly (refusing to bow to narrative manipulation, or act to censor users at the protocol level) as a dysfunction. "Bitcoiners" are a full blown auto-immune disease at this point.

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

Hosting a bitcoinkernel workshop at @TheBitcoinConf this afternoon. All you need is your laptop and some Python skills. Building your own node has never been easier, and if you manage to catch some blocks in the process - I'm bringing @bitrefill vouchers and @bitcoinbrink swag!

bitcoin is money

Sebastian is a beast. Unafraid of difficult-to-review changes and jumping into the underlying cryptography. Thank you for 5 years of Bitcoin open source contributions, @theStack 🥂

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

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

Cluster Mempool Embedded ASmap Private broadcast A new tx output spender index Stratum V2 / IPC interface updates A more usable (experimental) kernel Plenty of bug fixes and improvements

Bitcoin Core v31.0 was released! It is available from: bitcoincore.org/en/download/ Release notes: bitcoincore.org/en/releases/31…

More from Bitcoin Core developers funded by Brink: brink.dev/blog/2026/03/2…

You can view all of his Bitcoin Core PRs here: github.com/bitcoinbrink/w… And review comments: github.com/bitcoinbrink/w…

Stéphan Vuylsteke (@stphnvlstk) joined Brink in 2022 and works full time on Bitcoin Core development. In 2025, he deepened his involvement with the Bitcoin Kernel project, the effort to extract Bitcoin Core's consensus logic into a standalone, reusable library…

@KevKevPal It excludes the authors own comments as well as DrahtBot See: #L23C29-L23C37" target="_blank" rel="nofollow noopener">github.com/dergoegge/bitc…

@bitschmidty Does this exclude the DrahtBot comments?

Average number of review comments per (merged) PR in Bitcoin Core over the years

Real world demo of some of the issues that could be fixed by BIP54. The example blocks distributed here are still far from the actual worst-case possible