Bitcoin Optech: Newsletter #399 Recap

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Armin Sabouri, Pyth, Conduition, and Jonas Nick to discuss Newsletter #399. News ● Wallet fingerprinting risks for payjoin privacy (44:15) ● Draft BIP for a wallet backup metadata format (1:04:26) Changing consensus ● Compact Isogeny PQC can replace HD wallets, key-tweaking, silent payments (24:23) ● Varops budget and tapscript leaf 0xc2 (aka Script Restoration) are BIPs 440 and 441 (1:13:24) ● SHRIMPS: 2.5 KB post-quantum signatures across multiple stateful devices (02:02) Releases and release candidates ● Bitcoin Cor...