Bitcoin Optech: Newsletter #375 Recap

Gustavo Flores Echaiz and Mike Schmidt are joined by Sindura Saraswathi, ZmnSCPxj, and Eugene Siegel to discuss ⁠Newsletter #375⁠ (https://bitcoinops.org/en/newsletters/2025/10/10/).

News ● Optimal Threshold Signatures (1:56) ● Flattening certain nested threshold signatures (14:33) ● Theoretical limitations on embedding data in the UTXO set (38:14)

Bitcoin Core PR Review Club ● Compact block harness (27:12)

Releases and release candidates ● Bitcoin Inquisition 29.1 (45:01)

Notable code and documentation changes ● Bitcoin Core #33453 (47:16) ● Bitcoin Core #33504 (51:52) ● Core Lightning #8563 (53:55) ● Core Lightning #8523 (56:55) ● Core Lightning #8398 (58:22) ● LDK #4120 (59:47) ● LND #10254 (1:01:35)