Conduition (@conduition_io), Ram (@pseudoramdom), and Fabian Jahr (@fjahr) joined Optech to discuss Newsletter #417#: News ● Draft BIP for stale tip relay (29:26) Changing consensus ● CISA for taproot keypath spends (BIP460) (40:38) ● Segwit commitment to post-quantum witness data (57:51) ● PQC output type discussion (1:45) ● Input-triggered transaction expiry (1:03:36) ● Layered quantum recovery of hashed addresses (21:53) ● Segregated Data (SegData) BIP draft (1:08:33) Releases and release candidates ● Libsecp256k1 0.8.0 (1:15:24) Notable code and documentation changes ● Bitcoin Core #35501# (1:18:10) ● Core Lightning #9298# (1:22:47) ● Core Lightning #9353# (1:25:02) ● Eclair #3336# (1:26:15) ● LND #10942# (1:27:53) ● LND #10992# (1:29:35) ● Rust Bitcoin #6364# (1:31:55) ● Rust Bitcoin #6642# (1:33:22) ● BTCPay Server #7491# (1:36:52) ● BTCPay Server #7488# (1:38:35)

Armin Sabouri, Pyth (@pythcoiner), Conduition (@conduition_io) , and Jonas Nick (@n1ckler) joined Optech 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 Core 31.0rc2 (1:22:07) ● Core Lightning 26.04rc2 (1:23:32) ● BTCPay Server 2.3.7 (1:24:04) Notable code and documentation changes ● Bitcoin Core #32297# (1:26:29) ● Bitcoin Core #34379# (1:28:54) ● Eclair #3269# (1:30:37) ● LDK #4486# (1:32:59) ● LDK #4428# (1:35:00) ● LND #9982# (1:37:13) ● LND #10063# (1:39:00)