Bitcoin Optech: Newsletter #402 Recap

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)