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Bitcoin Optech: Newsletter #408 Recap
Wednesday, 10 June, 2026

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Pyth and Ademan to discuss Newsletter #408.News● A post-quantum path for BIP324 (37:15) ● Discussion of QR signing payloads for miniscript wallets (1:27) Changing consensus● CTV-only vault proof of concept (13:08) ● Post-quantum Lightning discussion (43:41) ● Quantum attack game theory (47:24) ● BIP54 64-byte transactions and potential legitimate uses (49:15) Releases and release candidates● Core Lightning 26.06 (1:11:15) Notable code and documentation changes● Bitcoin Core #35269 (1:15:42) ● Bitcoin Core #34644 (1:20:45) ● Bitcoin Core #34198 (1:22:21) ● LND #10813 (1:26:32) ● Rust Bitcoin #6250 (1:28:05) ● BOLTs #1338 (1:36:06) ● BOLTs #1326 (1:37:23)

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