Bitcoin Optech newsletter #396 is here: - describes a collision-resistant hash function using Bitcoin Script - summarizes continued discussion of Lightning Network traffic analysis - Optech Newsletter #396 Podcast https://bitcoinops.org/en/newsletters/2026/03/13/ Robin Linus posted to Delving Bitcoin about Binohash, a new collision-resistant hash function using Bitcoin Script… https://bitcoinops.org/en/newsletters/2026/03/13/#collisi… Jonathan Harvey-Buschel posted updates about Gossip Observer, a tool for collecting LN gossip traffic and computing metrics to evaluate replacing message flooding with a set-reconciliation-based protocol… https://bitcoinops.org/en/newsletters/2026/03/13/#continu… Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.