Moonsettler and Julian joined Optech to discuss Newsletter #383: - A consensus bug in the NBitcoin library found with differential fuzzing - LNHANCE soft fork proposal updates - Benchmarking Bitcoin Script under the proposed varops budget - Optimizations to SLH-DSA (SPHINCS) post-quantum signatures - And More You can listen on our website: https://bitcoinops.org/en/podcast/2025/12/09/ Fountain: https://fountain.fm/episode/hWoSXyZivt2VIK3sD2m5 Spotify: https://open.spotify.com/episode/7xoG5U9JOs579CkQhc1G58 Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-383-recap/id1674626983?i=1000740473439

Bitcoin Optech newsletter #383 is here: - describes a fixed vulnerability affecting the NBitcoin library - summarizes the LNHANCE soft fork proposal - relays a call to action to benchmark Bitcoin script execution under GSR's varops budget - highlights discussion of optimizations to SLH-DSA (SPHINCS) post-quantum signatures - Optech Newsletter #383 Podcast https://bitcoinops.org/en/newsletters/2025/12/05/ Bruno Garcia posted to Delving Bitcoin about a theoretical consensus failure in NBitcoin that could occur when using OP_NIP... https://bitcoinops.org/en/newsletters/2025/12/05/#consensus-bug-in-nbitcoin-library Moonsettler proposes a soft fork for LNHANCE now that all four of its constituent opcodes have updated BIPs and reference implementations... https://bitcoinops.org/en/newsletters/2025/12/05/#lnhance-soft-fork Julian posted a call to action to benchmark Bitcoin script execution under the varops budget... https://bitcoinops.org/en/newsletters/2025/12/05/#benchmarking-the-varops-budget Continuing the discussions around hardening Bitcoin against quantum computing, conduition presented his work on optimizing the SPHINCS signing algorithm... https://bitcoinops.org/en/newsletters/2025/12/05/#slh-dsa-sphincs-post-quantum-signature-optimizations Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 17:30 UTC. Join us to discuss or ask questions! https://riverside.fm/studio/bitcoin-optech

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt discuss Newsletter #382: - Updated stats on compact block reconstructions - A motion to activate BIP3 and replace the current BIP process - 3 questions from the Bitcoin Stack Exchange - And more You can listen on our website: https://bitcoinops.org/en/podcast/2025/12/02/ Fountain: https://fountain.fm/episode/93Jhx6LCQCiZDKQYppJ8 Spotify: https://open.spotify.com/episode/3RlXvoyRoZW5Rw1u3GcsIM Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-382-recap/id1674626983?i=1000739533949

Bitcoin Optech newsletter #382 is here: - provides an update on compact block reconstruction discussions - relays a call to activate BIP3 - summarizes popular Q&A from Stack Exchange - Optech Newsletter #382 Podcast https://bitcoinops.org/en/newsletters/2025/11/28/ 0xB10C posted an update to Delving Bitcoin about his statistics around compact block reconstruction... https://bitcoinops.org/en/newsletters/2025/11/28/#stats-on-compact-block-reconstructions-updates Murch posted to the Bitcoin-Dev mailing list a formal motion to activate BIP3... https://bitcoinops.org/en/newsletters/2025/11/28/#motion-to-activate-bip3 Selected Q&A from Bitcoin Stack Exchange: - Do pruned nodes store witness inscriptions? - Increasing probability of block hash collisions when difficulty is too high - What is the purpose of the initial 0x04 byte in all extended public and private keys? https://bitcoinops.org/en/newsletters/2025/11/28/#selected-qa-from-bitcoin-stack-exchange Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 17:30 UTC. Join us to discuss or ask questions! https://riverside.fm/studio/bitcoin-optech

Antoine Poinsot and ZmnSCPxj joined Optech to discuss Newsletter #381: - Modeling stale rates by propagation delay and mining centralization - Private key handover for collaborative closure - Updates to services and client software - And more You can listen on our website: https://bitcoinops.org/en/podcast/2025/11/25/ Fountain: https://fountain.fm/episode/3zDWx0jj8JOTj9ukAoC6 Spotify: https://open.spotify.com/episode/0BsoRU9mZZiLLlDYFtLo0W Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-381-recap/id1674626983?i=1000738423632

Bitcoin Optech newsletter #381 is here: - looks at an analysis of how block propagation times may affect miner revenue - describes a new approach for resolving protocols where multiple parties share funds - summarizes changes to services/client software - Optech Newsletter #381 Podcast https://bitcoinops.org/en/newsletters/2025/11/21/ Antoine Poinsot posted to Delving Bitcoin about modeling stale block rates and how block propagation time affects a miner’s revenue as a function of its hashrate... https://bitcoinops.org/en/newsletters/2025/11/21/#modeling-stale-rates-by-propagation-delay-and-mining-centralization ZmnSCPxj posted to Delving Bitcoin about private key handover, an optimization that protocols can implement when funds, previously owned by two parties, need to be refunded to a single entity... https://bitcoinops.org/en/newsletters/2025/11/21/#private-key-handover-for-collaborative-closure Changes to services and client software: - Arkade launches - Mempool monitoring mobile application - Web-based policy and miniscript IDE - Phoenix Wallet adds taproot channels - Nunchuk 2.0 launches - LN gossip traffic analysis tool announced https://bitcoinops.org/en/newsletters/2025/11/21/#changes-to-services-and-client-software Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions! https://riverside.fm/studio/bitcoin-optech

TheCharlatan joined Optech to discuss Newsletter #380: - The Bitcoin Kernel - And more You can listen on our website: https://bitcoinops.org/en/podcast/2025/11/18/ Fountain: https://fountain.fm/episode/Qmqqq6fCDHTZt1SL0xxi Spotify: https://open.spotify.com/episode/5qGvgMkll7x3KQviU8Vm65 Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-380-recap/id1674626983?i=1000737307431

Sebastian Falbesoner, PortlandHODL, Tadge Dryja, and Antoine Poinsot joined Optech to discuss Newsletter #379: - ECDSA signature validation in OpenSSL vs. libsecp256k1 - Multiple discussions about restricting data - Post-quantum signature aggregation - Native STARK proof verification in Bitcoin Script - BIP54 implementation and test vectors - And more You can listen on our website: https://bitcoinops.org/en/podcast/2025/11/11/ Fountain: https://fountain.fm/episode/6cQbKPDwMKQ2qu4HA14r Spotify: https://open.spotify.com/episode/26JrUei66sLjcgXHMzmsTU Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-379-recap/id1674626983?i=1000736447881