Publications
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Newsletters: a weekly summary of news about Bitcoin and LN development.
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Blog posts: Occasional updates and reference material from the Optech team.
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Podcast Episodes: Audio discussions of our newsletters.
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Bitcoin Optech Newsletter #429
This week’s newsletter describes a protocol for creating silent payment transactions from multiparty wallets, summarizes the responsible disclosure of a denial-of-service vulnerability that affected older versions of Core Lightning, and explains Bitcoin Core’s updated security policy for easily discoverable vulnerabilities. Also included are our regular sections with selected questions and answers from the Bitcoin Stack Exchange, announcements of new releases and release candidates, and descriptions of notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #428 Recap Podcast
Gustavo Flores Echaiz and Brandon Black are joined by Adam Gibson, Vincenzo Palazzo, and João Dias to discuss Newsletter #428.
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Bitcoin Optech Newsletter #428
This week’s newsletter describes a design for a single-issuer layer 2 whose users can redeem their bitcoin onchain without the issuer’s cooperation and summarizes a proposal for including hash preimages in output script descriptors. Also included are our regular sections describing recent changes to services and client software, announcing new releases and release candidates, and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #427 Recap Podcast
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Erick Cestari and Adam Gibson to discuss Newsletter #427.
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Bitcoin Optech Newsletter #427
This week’s newsletter summarizes the disclosure of two denial-of-service vulnerabilities in older versions of Eclair and describes a proposed scheme for running complex multi-round contracts inside Lightning channels. Also included are our regular sections announcing new releases and release candidates and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #426 Recap Podcast
Gustavo Flores Echaiz is joined by Clara Shikhelman and Elias Rohrer to discuss Newsletter #426.
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Bitcoin Optech Newsletter #426
This week’s newsletter links to a draft BIP for letting peers choose their own one-byte message type IDs over the version 2 P2P transport, summarizes a discussion about whether BIPs should include their number in tagged hash tags, and describes a proposed metaprotocol for private onchain transfers that requires no consensus changes. Also included are our regular sections announcing new releases and release candidates and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #425 Recap Podcast
Gustavo Flores Echaiz and Brandon Black are joined by Matt Morehouse to discuss Newsletter #425.
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Bitcoin Optech Newsletter #425
This week’s newsletter summarizes the responsible disclosure of two denial-of-service vulnerabilities affecting older versions of Eclair and describes a proposal for synchronizing wallet labels between devices through an untrusted store. Also included are our regular sections summarizing proposals and discussion about changing Bitcoin’s consensus rules, announcing new releases and release candidates, and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #424 Recap Podcast
Gustavo Flores Echaiz and Mike Schmidt are joined by Ahmet Kurt and Jan B to discuss Newsletter #424.
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Bitcoin Optech Newsletter #424
This week’s newsletter describes a proposal for upgrading the offchain protocols of the Lightning Network to post-quantum security. Also included are our regular sections with selected questions and answers from the Bitcoin Stack Exchange, announcements of new releases and release candidates, and descriptions of notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #423 Recap Podcast
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Davidson Souza, Eric Price, and PortlandHODL to discuss Newsletter #423.
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Bitcoin Optech Newsletter #423
This week’s newsletter summarizes an analysis of mining pool difficulty controllers stranding slowed miners, describes a proposed improvement to Utreexo’s initial block download, and links to a draft BIP for specifying unspendable taproot internal keys. Also included are our regular sections describing recent changes to services and client software, announcing new releases and release candidates, and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #422 Recap Podcast
Mark “Murch” Erhardt and Mike Schmidt are joined by Adam Gibson and Rob Segers to discuss Newsletter #422.
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Bitcoin Optech Newsletter #422
This week’s newsletter describes a proposed protocol for probabilistic coinjoins disguised as covert bets and summarizes benchmarks of a silent payments indexing server against compact block filters for light clients. Also included are our regular sections announcing new releases and release candidates and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #421 Recap Podcast
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by average_gary, Erick Cestari, Conduition, and Greg Sanders to discuss Newsletter #421.
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Bitcoin Optech Newsletter #421
This week’s newsletter describes an idea for pools to pay miners using silent payments in the coinbase transaction and summarizes the responsible disclosure of a denial-of-service vulnerability affecting older versions of Core Lightning. Also included are our regular sections summarizing proposals and discussion about changing Bitcoin’s consensus rules, announcing new releases and release candidates, and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #420 Recap Podcast
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Níckolas Goline, Optout, Abubakar Sadiq Ismail, and Moonsettler to discuss Newsletter #420.
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Bitcoin Optech Newsletter #420
This week’s newsletter relays advance notice of a planned Core Lightning security release, summarizes a discussion about opt-in replay protection for potential future forks, notes that the Hardware Wallet Interface (HWI) project will enter maintenance mode, and describes a request for comments on using block-range filters. Also included are our regular sections announcing new releases and release candidates and describing notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #419 Recap Podcast
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Bastien Teinturier, Salvatore Ingala, and spacebear to discuss Newsletter #419.
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