Publications
Recent publications from our blog posts and newsletters.
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Bitcoin Optech Newsletter #116
This week’s newsletter describes a proposed soft fork to enable a new type of fee bumping and summarizes research into scripts that can never be spent because they require satisfying both timelocks and heightlocks. Also included are our regular sections with summaries of updates to services and client software, a list of new releases and release candidates, and changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #115
This week’s newsletter recommends checking for nodes vulnerable to the InvDoS attack, briefly describes that attack, summarizes another attack against LN channels, and links to the announcement of the Crypto Open Patent Alliance. Also included are our regular sections with releases, release candidates, and notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #114
This week’s newsletter describes continued discussion about a protocol for making routable coinswaps and includes our regular sections summarizing a Bitcoin Core PR Review Club meeting and notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #113
This week’s newsletter describes a proposed change to the way LN commitment transactions are constructed, summarizes discussion of a default signet, and links to a proposal for standardizing temporarily trusted LN channels. Also included are our regular sections with recently transcribed talks and conversations, releases and release candidates, and notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #112
This week’s newsletter links to a discussion about routed coinswaps and includes our regular sections with summaries of questions and answers from the Bitcoin StackExchange, releases and release candidates, and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #111
This week’s newsletter describes a possible update to the BIP340 specification of schnorr signatures and a new proposed BIP that specifies how Bitcoin nodes should handle P2P protocol feature negotiation in a forward compatible way. Also included are our regular sections with notable changes to services and client software, releases and release candidates, and changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #110
This week’s newsletter summarizes a discussion about
SIGHASH_ANYPREVOUTand eltoo, includes a field report showing how 57,000 BTC could have been saved in transaction fees using segwit and batching, and provides our regular sections with the summary of a Bitcoin Core PR Review Club meeting, releases and release candidates, and notable changes to popular Bitcoin infrastructure projects. -
Field Report: How segwit and batching could have saved half a billion dollars in fees
A field report, based on research from Veriphi, showing how full segwit and batching adoption could have saved users nearly half a billion dollars in Bitcoin network fees. -
Bitcoin Optech Newsletter #109
This week’s newsletter describes the new Minsc policy language and contains our regular sections with recently transcribed talks and conversations, releases and release candidates, and notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #108
This week’s newsletter describes a proposal to allow upgrading LN channel commitment transaction formats without opening new channels and includes a field report from River Financial about building wallet software using PSBTs and descriptors. Also included are our regular sections with selected questions and answers from the Bitcoin StackExchange, recent releases and release candidates, and notable changes to popular Bitcoin infrastructure projects.
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Field Report: Using Descriptors and PSBT at River Financial
A field report about how River Financial uses Partially Signed Bitcoin Transactions (PSBTs) and Output Script Descriptors in its wallet software. -
Bitcoin Optech Newsletter #107
This week’s newsletter links to several discussions about activating taproot and summarizes a proposed update to BIP173 bech32 addresses. Also included are our regular sections summarizing interesting changes to services and client software, releases and release candidates, and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #106
This week’s newsletter describes a proposed update to the draft BIP118
SIGHASH_NOINPUTand summarizes notable changes to popular Bitcoin infrastructure projects. -
Bitcoin Optech Newsletter #105
This week’s newsletter summarizes a proposed BIP for BIP32-based path templates and includes our regular sections with the summary of a Bitcoin Core PR Review Club meeting, releases and release candidates, and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #104
This week’s newsletter summarizes a discussion about mining incentives related to HTLCs and links to an announcement about a proposed service to store and relay presigned transactions. Also included are our regular sections with recently transcribed talks and conversations, new releases and release candidates, and notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #103
This week’s newsletter summarizes a newly published fee ransom attack against LN users, links to continued discussion about the attack against LN atomicity, and shares a reminder about collision attacks on RIPEMD160-based addresses in multiparty protocols. Also included are our regular sections with popular questions and answers from the Bitcoin StackExchange, a list of releases and release candidates published this week, and notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #102
This week’s newsletter summarizes the CoinPool payment pool proposal and the WabiSabi coordinated coinjoin protocol. Also included are our regular sections with notable changes to services, client software, and infrastructure software.
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Bitcoin Optech Newsletter #101
This week’s newsletter links to a blog post and paper about using eclipse attacks against Bitcoin software in order to steal from LN channels and describes the history and impact of a fee overpayment attack that affects hardware wallets. Also included are our regular sections with the summary of a Bitcoin Core PR Review Club meeting, descriptions of recent software releases, and summaries of recent changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #100
This week’s newsletter summarizes a proposed design for a coinswap implementation, describes new middleware for allowing lightweight wallets to request information directly from a user’s own node, and highlights two transaction size calculators. Also included are our regular sections with descriptions of several recently transcribed talks, new releases and release candidates, and notable changes to popular Bitcoin infrastructure software. A special final section celebrates the publication of Newsletter #100.
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Bitcoin Optech Newsletter #99
This week’s newsletter summarizes a discussion about the minimum allowed transaction size and includes our regular sections with popular questions and answers from the Bitcoin StackExchange, releases and release candidates, and notable merges from Bitcoin infrastructure projects.
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