Bitcoin Optech newsletter #391 is here: - links to work on a constant-time parallelized UTXO database - summarizes a new high-level language for writing Bitcoin Script - describes an idea to mitigate dust attacks - covers the SHRINCS 324-byte stateful post-quantum signatures with static backups paper - highlights discussion to address remaining points on BIP54 - summarizes the Falcon post-quantum signature scheme proposal - links to research showing SLH-DSA verification can compete with ECC - Optech Newsletter #391 Podcast https://bitcoinops.org/en/newsletters/2026/02/06/ Toby Sharp posted to Delving Bitcoin about his latest project, a custom, highly parallel UTXO database, with constant-time queries, called Hornet UTXO(1)... https://bitcoinops.org/en/newsletters/2026/02/06/#a-const… Hyunhum Cho wrote on Delving Bitcoin about his work on Bithoven which is an alternative to miniscript... https://bitcoinops.org/en/newsletters/2026/02/06/#bithove… Bubb1es posted to Delving Bitcoin about a way to dispose of dust attacks in onchain wallets... https://bitcoinops.org/en/newsletters/2026/02/06/#discuss… Following-up on the Hash-based Signature Schemes for Bitcoin, Jonas Nick detailed on Delving Bitcoin a specific hash-based quantum-resistant signature algorithm with potentially useful properties for use in Bitcoin... https://bitcoinops.org/en/newsletters/2026/02/06/#shrincs… Antoine Poinsot wrote about the remaining points of discussion for the consensus cleanup soft fork... https://bitcoinops.org/en/newsletters/2026/02/06/#address… Giulio Golinelli posted on the mailing list proposing a fork to enable Falcon signature verification to Bitcoin... https://bitcoinops.org/en/newsletters/2026/02/06/#falcon-… Conduition wrote about his ongoing work benchmarking his post-quantum SLH-DSA verification implementation against libsecp256k1... https://bitcoinops.org/en/newsletters/2026/02/06/#slh-dsa… Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 17:30 UTC.