Bitcoin Optech: Newsletter #402 Recap

Bitcoin Optech: Newsletter #402 Recap

From Bitcoin Optech Podcast by Bitcoin Optech

May 1, 2026 · 1h 20m

About this episode

The episode discusses the highlights and updates from Bitcoin Optech Newsletter #402.

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)

People in this episode

Hosts: Mark “Murch” Erhardt, Gustavo Flores Echaiz

Guest: Toby Sharp

Topics covered

  • Bitcoin consensus rules
  • Lightning Network
  • BIP discussions
  • Bitcoin Core releases
  • code changes
  • MuSig2 Lightning channel

Keywords

  • Bitcoin
  • Lightning Network
  • BIP342
  • SIGHASH_ANYPREVOUT
  • MuSig2
  • Bitcoin Core
  • Core Lightning
  • LND

Mentioned in this episode

Organizations: Bitcoin Stack Exchange, Bitcoin Core, Core Lightning, LND, Bitcoin Optech, LDK

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