Matt Corallo, Gregory Sanders, and Sebastian van Staa joined Optech to discuss Newsletter #397: - Changes to services and client software including items about FIBRE, L402, and others - The Bitcoin Core 31.0rc1 testing guide - OP_TEMPLATEHASH and Taproot-native (Re)bindable Transactions - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #397 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Matt Corallo, Gregory Sanders, and Sebastian van Staa to discuss Ne...

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Bitcoin Optech: Newsletter #397 Recap

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Bitcoin Optech: Newsletter #397 Recap

Podcast Episode · Bitcoin Optech Podcast · March 24 · 1h 30m

Bitcoin Optech newsletter #397 is here: - summarizes changes to services/client software including Cake, Sparrow, FIBRE, and more - Bitcoin Core 31.0rc1 - Optech Newsletter #397 Podcast

Bitcoin Optech

Bitcoin Optech Newsletter #397

This week’s newsletter includes our regular sections describing changes to services and client software, announcing new releases and release cand...

Changes to services and client software: - Cake Wallet adds Lightning support - Sparrow 2.4.0 and 2.4.2 released - Blockstream Jade adds Lightning via Liquid - Lightning Labs releases agent tools - Tether launches MiningOS - FIBRE network relaunched - TUI for Bitcoin Core released

Bitcoin Optech

Bitcoin Optech Newsletter #397

This week’s newsletter includes our regular sections describing changes to services and client software, announcing new releases and release cand...

Bitcoin Core 31.0rc1 is a release candidate for the next major version of the predominant full node implementation. A testing guide is available...

Bitcoin Optech

Bitcoin Optech Newsletter #397

This week’s newsletter includes our regular sections describing changes to services and client software, announcing new releases and release cand...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

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:

Bitcoin Optech

Bitcoin Optech Newsletter #396 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Jonathan Harvey-Buschel to discuss Newsletter #396.

Fountain: https://fountain.fm/episode/kr8hTL0nldH8CQ7SCt5v Spotify:

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Bitcoin Optech: Newsletter #396 Recap

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Bitcoin Optech: Newsletter #396 Recap

Podcast Episode · Bitcoin Optech Podcast · March 17 · 50m

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

Bitcoin Optech

Bitcoin Optech Newsletter #396

This week’s newsletter describes a collision-resistant hash function using Bitcoin Script and summarizes continued discussion of Lightning Networ...

Robin Linus posted to Delving Bitcoin about Binohash, a new collision-resistant hash function using Bitcoin Script…

Bitcoin Optech

Bitcoin Optech Newsletter #396

This week’s newsletter describes a collision-resistant hash function using Bitcoin Script and summarizes continued discussion of Lightning Networ...

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…

Bitcoin Optech

Bitcoin Optech Newsletter #396

This week’s newsletter describes a collision-resistant hash function using Bitcoin Script and summarizes continued discussion of Lightning Networ...

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:

Bitcoin Optech

Bitcoin Optech Newsletter #395 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Jon McAlpine, Antoine Poinsot, Mike Casey, and Ethan Heilman to dis...

Fountain: https://fountain.fm/episode/662j7DIN0bkqLa4UPCyQ Spotify:

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Bitcoin Optech: Newsletter #395 Recap

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Bitcoin Optech: Newsletter #395 Recap

Podcast Episode · Bitcoin Optech Podcast · March 11 · 2h 8m

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

Bitcoin Optech

Bitcoin Optech Newsletter #395

This week’s newsletter describes a standard for verifying VTXOs across different Ark implementations and links to a draft BIP for expanding the m...

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...

Bitcoin Optech

Bitcoin Optech Newsletter #395

This week’s newsletter describes a standard for verifying VTXOs across different Ark implementations and links to a draft BIP for expanding the m...

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...

Bitcoin Optech

Bitcoin Optech Newsletter #395

This week’s newsletter describes a standard for verifying VTXOs across different Ark implementations and links to a draft BIP for expanding the m...

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...

Bitcoin Optech

Bitcoin Optech Newsletter #395

This week’s newsletter describes a standard for verifying VTXOs across different Ark implementations and links to a draft BIP for expanding the m...

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...

Bitcoin Optech

Bitcoin Optech Newsletter #395

This week’s newsletter describes a standard for verifying VTXOs across different Ark implementations and links to a draft BIP for expanding the m...

Ethan Heilman wrote on the Bitcoin-Dev mailing list regarding the potential need for RFC7696 Cryptographic Algorithm Agility in Bitcoin...

Bitcoin Optech

Bitcoin Optech Newsletter #395

This week’s newsletter describes a standard for verifying VTXOs across different Ark implementations and links to a draft BIP for expanding the m...

Pieter Wuille wrote to the Bitcoin-Dev mailing list about the limitations of the cryptographic agility...

Bitcoin Optech

Bitcoin Optech Newsletter #395

This week’s newsletter describes a standard for verifying VTXOs across different Ark implementations and links to a draft BIP for expanding the m...

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:

Bitcoin Optech

Bitcoin Optech Newsletter #394 Recap Podcast

Mark “Murch” Erhardt and Mike Schmidt are joined by Craig Raw and Fabian Jahr to discuss Newsletter #394.

Fountain: https://fountain.fm/episode/ZSsrDWgcl4JV5lFgcmGv Spotify:

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Bitcoin Optech: Newsletter #394 Recap

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Bitcoin Optech: Newsletter #394 Recap

Podcast Episode · Bitcoin Optech Podcast · March 3 · 1h 4m

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

Bitcoin Optech

Bitcoin Optech Newsletter #394

This week’s newsletter looks at a proposed BIP for including supplemental information with output script descriptors. Also included are our regul...

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...

Bitcoin Optech

Bitcoin Optech Newsletter #394

This week’s newsletter looks at a proposed BIP for including supplemental information with output script descriptors. Also included are our regul...

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?

Bitcoin Optech

Bitcoin Optech Newsletter #394

This week’s newsletter looks at a proposed BIP for including supplemental information with output script descriptors. Also included are our regul...

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:

Bitcoin Optech

Bitcoin Optech Newsletter #393 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Misha Komarov, Erik De Smedt, and arbedout to discuss Newsletter #393.

Fountain: https://fountain.fm/episode/F0j1y6kbC1r7M0zINYM6 Spotify:

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Bitcoin Optech: Newsletter #393 Recap

Podcast Episode · Bitcoin Optech Podcast · February 24 · 1h 31m

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:

Bitcoin Optech

Bitcoin Optech Newsletter #392 Recap Podcast

Mark “Murch” Erhardt and Gustavo Flores Echaiz are joined by Sebastian Falbesoner and Oleksandr Kurbatov to discuss Newsletter #392.

Fountain: https://fountain.fm/episode/cepxpUMU4sikCSbeUtDQ Spotify:

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Bitcoin Optech: Newsletter #392 Recap

Podcast Episode · Bitcoin Optech Podcast · February 24 · 1h 32m

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

Bitcoin Optech

Bitcoin Optech Newsletter #393

This week’s newsletter summarizes a discussion about recent OP_RETURN usage and describes a protocol to enforce covenant-like spending conditions...

Anthony Towns posted to Delving about the recent OP_RETURN statistics since the release of Bitcoin Core v30.0 on October 10...

Bitcoin Optech

Bitcoin Optech Newsletter #393

This week’s newsletter summarizes a discussion about recent OP_RETURN usage and describes a protocol to enforce covenant-like spending conditions...

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...

Bitcoin Optech

Bitcoin Optech Newsletter #393

This week’s newsletter summarizes a discussion about recent OP_RETURN usage and describes a protocol to enforce covenant-like spending conditions...

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

Bitcoin Optech

Bitcoin Optech Newsletter #393

This week’s newsletter summarizes a discussion about recent OP_RETURN usage and describes a protocol to enforce covenant-like spending conditions...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 17:30 UTC.

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

Bitcoin Optech

Bitcoin Optech Newsletter #392

This week’s newsletter summarizes discussion of improving worst-case silent payment scanning performance and describes an idea for enabling many ...

Sebastian Falbesoner posted to the Bitcoin-Dev mailing list the discovery and mitigation of a theoretical attack on silent payment recipients...

Bitcoin Optech

Bitcoin Optech Newsletter #392

This week’s newsletter summarizes discussion of improving worst-case silent payment scanning performance and describes an idea for enabling many ...

Oleksandr Kurbatov posted to Delving Bitcoin about BLISK, a protocol designed to express complex authorization policies using boolean logic...

Bitcoin Optech

Bitcoin Optech Newsletter #392

This week’s newsletter summarizes discussion of improving worst-case silent payment scanning performance and describes an idea for enabling many ...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 17:30 UTC.

Toby Sharp, Chris Hyunhum Cho, Jonas Nick, and Antoine Poinsot joined Optech to discuss Newsletter #391: - Work on a constant-time parallelized UTXO database - A new higher level language for writing Bitcoin Script - An idea to mitigate dust attacks - Changing consensus including BIP54 consensus cleanup and post-quantum signature discussions including SHRINCS, Falcon, and SLH-DSA verification performance - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #391 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Toby Sharp, Chris Hyunhum Cho, Jonas Nick, and Antoine Poinsot to d...

Fountain: https://fountain.fm/episode/l0uUTumdZY0kAla2qy4v Spotify:

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Bitcoin Optech: Newsletter #391 Recap

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Bitcoin Optech: Newsletter #391 Recap

Podcast Episode · Bitcoin Optech Podcast · February 11 · 2h 10m

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

Bitcoin Optech

Bitcoin Optech Newsletter #391

This week’s newsletter links to work on a constant-time parallelized UTXO database, summarizes a new high-level language for writing Bitcoin Scri...

Toby Sharp posted to Delving Bitcoin about his latest project, a custom, highly parallel UTXO database, with constant-time queries, called Hornet UTXO(1)...

Bitcoin Optech

Bitcoin Optech Newsletter #391

This week’s newsletter links to work on a constant-time parallelized UTXO database, summarizes a new high-level language for writing Bitcoin Scri...

Hyunhum Cho wrote on Delving Bitcoin about his work on Bithoven which is an alternative to miniscript...

Bitcoin Optech

Bitcoin Optech Newsletter #391

This week’s newsletter links to work on a constant-time parallelized UTXO database, summarizes a new high-level language for writing Bitcoin Scri...

Bubb1es posted to Delving Bitcoin about a way to dispose of dust attacks in onchain wallets...

Bitcoin Optech

Bitcoin Optech Newsletter #391

This week’s newsletter links to work on a constant-time parallelized UTXO database, summarizes a new high-level language for writing Bitcoin Scri...

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...

Bitcoin Optech

Bitcoin Optech Newsletter #391

This week’s newsletter links to work on a constant-time parallelized UTXO database, summarizes a new high-level language for writing Bitcoin Scri...

Antoine Poinsot wrote about the remaining points of discussion for the consensus cleanup soft fork...

Bitcoin Optech

Bitcoin Optech Newsletter #391

This week’s newsletter links to work on a constant-time parallelized UTXO database, summarizes a new high-level language for writing Bitcoin Scri...

Giulio Golinelli posted on the mailing list proposing a fork to enable Falcon signature verification to Bitcoin...

Bitcoin Optech

Bitcoin Optech Newsletter #391

This week’s newsletter links to work on a constant-time parallelized UTXO database, summarizes a new high-level language for writing Bitcoin Scri...

Conduition wrote about his ongoing work benchmarking his post-quantum SLH-DSA verification implementation against libsecp256k1...

Bitcoin Optech

Bitcoin Optech Newsletter #391

This week’s newsletter links to work on a constant-time parallelized UTXO database, summarizes a new high-level language for writing Bitcoin Scri...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 17:30 UTC.

Liam Eagen joined Optech to discuss Newsletter #390: - The Argo garbled-circuits scheme - An LN-Symmetry update - 5 questions from the Bitcoin Stack Exchange - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #390 Recap Podcast

Mark “Murch” Erhardt and Gustavo Flores Echaiz are joined by Liam Eagen to discuss Newsletter #390.

Fountain: https://fountain.fm/episode/LCVHpTWDFbYJyG789W3L Spotify:

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Bitcoin Optech: Newsletter #390 Recap

Podcast Episode · Bitcoin Optech Podcast · February 4 · 1h 3m

Bitcoin Optech newsletter #390 is here: - summarizes a more efficient approach to garbled circuits - links to an LN-Symmetry update - summarizes popular Q&A from Stack Exchange - Optech Newsletter #390 Podcast

Bitcoin Optech

Bitcoin Optech Newsletter #390

This week’s newsletter summarizes a more efficient approach to garbled circuits and links to an LN-Symmetry update. Also included are our regular...

Robin Linus posted to Delving Bitcoin about a new paper by Liam Eagen and Ying Tong Lai describing a technique that will enable 1000 times more efficient garbled locks...

Bitcoin Optech

Bitcoin Optech Newsletter #390

This week’s newsletter summarizes a more efficient approach to garbled circuits and links to an LN-Symmetry update. Also included are our regular...

Gregory Sanders posted an update to Delving Bitcoin about his previous work on LN-Symmetry...

Bitcoin Optech

Bitcoin Optech Newsletter #390

This week’s newsletter summarizes a more efficient approach to garbled circuits and links to an LN-Symmetry update. Also included are our regular...

Selected Q&A from Bitcoin Stack Exchange - What is stored in dbcache and with what priority? - Can one do a coinjoin in Shielded CSV? - In Bitcoin Core, how to use Tor for broadcasting new transactions only? - Brassard-Høyer-Tapp (BHT) algorithm and Bitcoin (BIP360) - Why does BitHash alternate sha256 and ripmed160?

Bitcoin Optech

Bitcoin Optech Newsletter #390

This week’s newsletter summarizes a more efficient approach to garbled circuits and links to an LN-Symmetry update. Also included are our regular...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 17:30 UTC.

René Pickhardt joined Optech to discuss Newsletter #389: - A mathematical theory of payment channel networks - 2 updates to services and client software - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #389 Recap Podcast

Mark “Murch” Erhardt and Mike Schmidt are joined by René Pickhardt to discuss Newsletter #389.

Fountain: https://fountain.fm/episode/QO5rMIVxPbZw1bO6abkj Spotify:

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Bitcoin Optech: Newsletter #389 Recap

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Bitcoin Optech: Newsletter #389 Recap

Podcast Episode · Bitcoin Optech Podcast · January 27 · 54m

Bitcoin Optech newsletter #389 is here: - links to a paper on the study of payment channel networks - summarizes changes to services/client software including an Electrum server for testing silent payments and a BDK WASM library - Optech Newsletter #389 Podcast

Bitcoin Optech

Bitcoin Optech Newsletter #389

This week’s newsletter links to a paper on the study of payment channel networks. Also included are our regular sections describing recent update...

René Pickhardt posted to Delving Bitcoin about the publication of his new paper called “A Mathematical Theory of Payment Channel Network”...

Bitcoin Optech

Bitcoin Optech Newsletter #389

This week’s newsletter links to a paper on the study of payment channel networks. Also included are our regular sections describing recent update...

Changes to services and client software: - Electrum server for testing silent payments - BDK WASM library

Bitcoin Optech

Bitcoin Optech Newsletter #389

This week’s newsletter links to a paper on the study of payment channel networks. Also included are our regular sections describing recent update...

Bitcoin Optech will host an audio recap discussion of this newsletter on

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Bruno Garcia explains his vision for incremental mutation testing in Bitcoin Core:

Bruno Garcia joined Optech to discuss Newsletter #388: - Incremental mutation testing in Bitcoin Core - BIP process updated - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #388 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Bruno Garcia to discuss Newsletter #388.

Fountain: https://fountain.fm/episode/TsQ3V8lAG5hrYWMbmXbn Spotify:

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Bitcoin Optech: Newsletter #388 Recap

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Bitcoin Optech: Newsletter #388 Recap

Podcast Episode · Bitcoin Optech Podcast · January 20 · 59m