Bitcoin Optech newsletter #392 is here: - summarizes discussion of improving worst-case silent payment scanning performance - describes an idea for enabling many spending conditions in a single key - Optech Newsletter #392 Podcast https://bitcoinops.org/en/newsletters/2026/02/13/ Sebastian Falbesoner posted to the Bitcoin-Dev mailing list the discovery and mitigation of a theoretical attack on silent payment recipients... https://bitcoinops.org/en/newsletters/2026/02/13/#proposa… Oleksandr Kurbatov posted to Delving Bitcoin about BLISK, a protocol designed to express complex authorization policies using boolean logic... https://bitcoinops.org/en/newsletters/2026/02/13/#blisk-b… Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 17:30 UTC.