Publications
Recent publications from our blog posts and newsletters.
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Bitcoin Optech Newsletter #145
This week’s newsletter describes progress on activating taproot, summarizes an update to LN offers to partly address stuck payments, relays a request for feedback on anchor outputs in LND, and announces the public launch of the Sapio smart contract development toolkit. Also included are our regular sections with summaries of changes to popular clients and services, new releases and release candidates, and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #144
This week’s newsletter summarizes recent progress on code to activate taproot and contains our regular sections with descriptions of a recent Bitcoin Core PR Review Club meeting and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #143
This week’s newsletter contains our regular sections with announcements of new releases and release candidates, plus notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #142
This week’s newsletter describes a paper and a short discussion about probabilistic path selection for LN and includes our regular sections with summaries of popular questions and answers from the Bitcoin StackExchange, release and release candidates, and notable changes to Bitcoin infrastructure software.
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Scaling Bitcoin using Payment Batching
Bitcoin Optech's perspective on how high-frequency spenders can use the scaling technique of payment batching to reduce transaction sizes and fees by about 75% in practical situations. -
Bitcoin Optech Newsletter #141
This week’s newsletter describes a technique for signature delegation under Bitcoin’s existing consensus rules, summarizes a discussion about taproot’s effect on Bitcoin’s resistance to quantum cryptography, and announces a series of weekly meetings to help activate taproot. Also included are our regular sections describing notable changes to services and client software, new releases and release candidates, and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #140
This week’s newsletter describes a discussion about rescuing lost LN funding transactions and includes our regular sections with announcements of releases, release candidates, and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #139
This week’s newsletter summarizes continued discussion about proposed methods for activating taproot and links to an effort to document existing software building on top of taproot. Also included are our regular sections with the summary of a Bitcoin Core PR Review Club meeting, announcements of releases and release candidates, and descriptions of notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #138
This week’s newsletter describes discussion about a desired replacement for some of the features of the BIP70 payment protocol and summarizes proposals for a standardized way to exchange fraud proofs for Discreet Log Contracts (DLCs). Also included are our regular sections describing new software releases, available release candidates, and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #137
This week’s newsletter describes the results of discussion about choosing activation parameters for a taproot soft fork and includes our regular sections with selected questions and answers from the Bitcoin StackExchange, releases and release candidates, and notable changes to popular Bitcoin infrastructure software.
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Pausing the Membership Program
As business travel remains on hold in many parts of the world due to the COVID-19 pandemic, we're temporarily pausing our membership model. We'll continue to provide high-quality online technical material for engineers working on Bitcoin. -
Bitcoin Optech Newsletter #136
This week’s newsletter describes the development of a new constant-time algorithm for generating and verifying transaction signatures, mentions a proposal to stop processing unsolicited transactions, summarizes a proposed BIP for setting up multisig wallets, shares insight from a discussion about managing escrows over LN, links to renewed discussion about bidirectional upfront LN fees, and mentions a new protocol for mitigating the risk of malicious hardware wallets. Also included are our regular sections with news about updated clients and services, announcements of new software releases and release candidates, and descriptions of notable changes in popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #135
This week’s newsletter links to the summary of last week’s taproot activation meeting and announces another scheduled meeting for next week, plus it describes recent progress in discreet log contracts and a new mailing list for discussing them. Also included are our regular sections with the summary of a Bitcoin Core PR Review Club meeting, descriptions of releases and release candidates, and a list of notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #134
This week’s newsletter links to a blog post about how a small change to the Script language after taproot activation could enable increased contract flexibility and includes our regular sections with notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #133
This week’s newsletter announces a meeting to discuss taproot activation mechanisms, includes a link to a Bitcoin Core usage survey, and includes our regular sections with top questions and answers from the Bitcoin StackExchange, a list of releases and release candidates, and descriptions of notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #132
This week’s newsletter summarizes posts to the Bitcoin-Dev mailing list about payjoin adoption and making hardware wallets compatible with more advanced Bitcoin features. Also included are our regular sections with overviews of changes to services and client software, new releases and release candidates, and changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #131
This week’s newsletter describes a new proposed Bitcoin P2P protocol message, a BIP for the bech32 modified address format, and an idea for preventing UTXO probing in proposed dual-funded LN channels. Also included are our regular sections with the summary of a Bitcoin Core PR Review Club meeting, a list of releases and release candidates, and descriptions of notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #130
This week’s newsletter describes a proposed update to BIP322 generic message signing and links to a specification for LN trampoline routing. Also included are our regular sections with announcements of releases, release candidates, and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #129: 2020 Year-in-Review Special
This special edition of the Optech Newsletter summarizes notable developments in Bitcoin during all of 2020. -
Bitcoin Optech Newsletter #128
This week’s newsletter describes two suggested improvements to LN static backups and links to a proposal for a new version of PSBTs. Also included are our regular sections with summaries of changes to services and client software, popular questions and answers from the Bitcoin StackExchange, new releases and release candidates, and notable changes to popular Bitcoin infrastructure projects.
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