Bitcoin Optech: Newsletter #402 Recap

What this episode covers

Mark “Murch” Erhardt and Gustavo Flores Echaiz are joined by Toby Sharp 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? (40:58) ● 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 (56:35) Notable code and documentation changes● Bitcoin Core #33477 (57:55) ● Bitcoin Core #35006 (1:02:21) ● BIPs #1895 (1:04:31) ● BIPs #2142 (1:12:47) ● LDK #4555 (1:14:28) ● LND #10713 (1:16:23) ● LND #10754 (1:18:14)

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Frequently Asked Questions

How long is this episode of Bitcoin Optech Podcast?

This episode is 1 hour and 19 minutes long.

When was this Bitcoin Optech Podcast episode published?

This episode was published on May 1, 2026.

What is this episode about?

Mark “Murch” Erhardt and Gustavo Flores Echaiz are joined by Toby Sharp 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)...

Can I download this Bitcoin Optech Podcast episode?

Yes, you can download this episode by clicking the download button on the episode player, or subscribe to the podcast in your preferred podcast app for automatic downloads.