Jonathan Harvey-Buschel joined Optech to discuss Newsletter #396: - Collision-resistant hash function for Bitcoin Script - Continued discussion of Gossip Observer traffic analysis tool - And more You can listen on our website: https://bitcoinops.org/en/podcast/2026/03/17/ Fountain: https://fountain.fm/episode/kr8hTL0nldH8CQ7SCt5v Spotify: https://open.spotify.com/episode/4u9tGb93ZZxKWCsgnsa3Pb Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-396-recap/id1674626983?i=1000755815619

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/#collision-resistant-hash-function-for-bitcoin-script 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/#continued-discussion-of-gossip-observer-traffic-analysis-tool Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

Jon McAlpine, Antoine Poinsot, Mike Casey, and Ethan Heilman joined Optech to discuss Newsletter #395: - A standard for stateless VTXO verification - Draft BIP for expanded nVersion nonce space for miners - Extensions to standard tooling for TEMPLATEHASH-CSFS-IK support - Hourglass V2 update - Algorithm agility for Bitcoin - The limitations of cryptographic agility in Bitcoin - And more You can listen on our website: https://bitcoinops.org/en/podcast/2026/03/10/ Fountain: https://fountain.fm/episode/662j7DIN0bkqLa4UPCyQ Spotify: https://open.spotify.com/episode/0rTY9h9m56q19wgPAjLax1 Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-395-recap/id1674626983?i=1000754691086

Bitcoin Optech newsletter #395 is here: - describes a standard for verifying VTXOs across different Ark implementations - links to a draft BIP for expanding the miner-usable nonce space in the block header’s nVersion field - points to extensions to standard tooling for TEMPLATEHASH-CSFS-IK support - summarizes updates to the Hourglass V2 proposal - examines perspectives on cryptographic algorithm agility for Bitcoin - Optech Newsletter #395 Podcast https://bitcoinops.org/en/newsletters/2026/03/06/ Jgmcalpine posted to Delving Bitcoin about his proposal for V-PACK, a stateless VTXO verification standard, which aims to provide a mechanism to independently verify and visualize VTXOs in the Ark ecosystem... https://bitcoinops.org/en/newsletters/2026/03/06/#a-standard-for-stateless-vtxo-verification Matt Corallo posted to the Bitcoin-Dev mailing list a draft BIP to increase the number of bits available in nVersion’s nonce space for miners from 16 to 24... https://bitcoinops.org/en/newsletters/2026/03/06/#draft-bip-for-expanded-nversion-nonce-space-for-miners Antoine Poinsot wrote on the Bitcoin-Dev mailing list about his preliminary work to integrate the taproot-native OP_TEMPLATEHASH soft fork proposal into miniscript and PSBTs... https://bitcoinops.org/en/newsletters/2026/03/06/#extensions-to-standard-tooling-for-templatehash-csfs-ik-support Mike Casey posted an update to the Bitcoin-Dev mailing list for the Hourglass protocol to mitigate the market impact of quantum attacks against certain lost coins... https://bitcoinops.org/en/newsletters/2026/03/06/#hourglass-v2-update Ethan Heilman wrote on the Bitcoin-Dev mailing list regarding the potential need for RFC7696 Cryptographic Algorithm Agility in Bitcoin... https://bitcoinops.org/en/newsletters/2026/03/06/#algorithm-agility-for-bitcoin Pieter Wuille wrote to the Bitcoin-Dev mailing list about the limitations of the cryptographic agility... https://bitcoinops.org/en/newsletters/2026/03/06/#the-limitations-of-cryptographic-agility-in-bitcoin Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 17:30 UTC.

Craig Raw and Fabian Jahr joined Optech to discuss Newsletter #394: - Draft BIP for output script descriptor annotations - ASMap in Bitcoin Core - Bitcoin Stack Exchange questions about BIP324 and spy mining - And more You can listen on our website: https://bitcoinops.org/en/podcast/2026/03/03/ Fountain: https://fountain.fm/episode/ZSsrDWgcl4JV5lFgcmGv Spotify: https://open.spotify.com/episode/3HZ8S2MzqUesdXF9MlaR3G Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-394-recap/id1674626983?i=1000752939548

Bitcoin Optech newsletter #394 is here: - looks at a proposed BIP for including supplemental information with output script descriptors - summarizes popular Q&A from Stack Exchange - Optech Newsletter #394 Podcast https://bitcoinops.org/en/newsletters/2026/02/27/ Craig Raw posted to the Bitcoin-Dev mailing list about a new BIP idea to provide useful metadata in the form of annotations, expressed as key/value pairs, appended directly to the descriptor... https://bitcoinops.org/en/newsletters/2026/02/27/#draft-bip-for-output-script-descriptor-annotations Selected Q&A from Bitcoin Stack Exchange - Is Bitcoin BIP324 v2 P2P transport distinguishable from random traffic? - What if a miner just broadcasts the header and never gives the block? https://bitcoinops.org/en/newsletters/2026/02/27/#selected-qa-from-bitcoin-stack-exchange Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 17:30 UTC.

Misha Komarov, Erik De Smedt, and arbedout joined Optech to discuss Newsletter #393: - Recent OP_RETURN output statistics - Bitcoin PIPEs v2 - Changes to services and client software including: hArk-based Ark software, Sigbash v2 and others - And more You can listen on our website: https://bitcoinops.org/en/podcast/2026/02/24/ Fountain: https://fountain.fm/episode/F0j1y6kbC1r7M0zINYM6 Spotify: https://open.spotify.com/episode/7BT9NHtzQGFZegi2UC98OK Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-393-recap/id1674626983?i=1000751237921

Sebastian Falbesoner and Oleksandr Kurbatov joined Optech to discuss Newsletter #392: - Proposal to limit the number of per-group silent payment recipients - BLISK, Boolean circuit Logic Integrated into the Single Key - And more You can listen on our website: https://bitcoinops.org/en/podcast/2026/02/17/ Fountain: https://fountain.fm/episode/cepxpUMU4sikCSbeUtDQ Spotify: https://open.spotify.com/episode/0EhHSmQZcDmBYZkTfzPdlT Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-392-recap/id1674626983?i=1000751215295

Bitcoin Optech newsletter #393 is here: - summarizes a discussion about recent OP_RETURN usage - describes a protocol to enforce covenant-like spending conditions without consensus changes - summarizes changes to services/client software including Ark software, silent payment and submarine swap support, and more - Optech Newsletter #393 Podcast https://bitcoinops.org/en/newsletters/2026/02/20/ Anthony Towns posted to Delving about the recent OP_RETURN statistics since the release of Bitcoin Core v30.0 on October 10... https://bitcoinops.org/en/newsletters/2026/02/20/#recent-op-return-output-statistics Misha Komarov posted to Delving Bitcoin about Bitcoin PIPEs, a protocol that allows enforcement of spending conditions without the need for consensus changes or optimistic challenge mechanisms... https://bitcoinops.org/en/newsletters/2026/02/20/#bitcoin-pipes-v2 Changes to services and client software: - Second releases hArk-based Ark software - Amboss announces RailsX - Nunchuk adds silent payment support - Electrum adds submarine swap features - Sigbash v2 announced https://bitcoinops.org/en/newsletters/2026/02/20/#changes-to-services-and-client-software Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 17:30 UTC.