Publications
Recent publications from our blog posts and newsletters.
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Bitcoin Optech Newsletter #126
This week’s newsletter describes a proposal for using fidelity bonds on LN to prevent denial of service attacks, summarizes a PR to address a fee siphoning attack that could affect LN channels using anchor outputs, and links to a proposed specification for miniscript. Also included are our regular sections with releases, release candidates, and recent code changes in popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #125
This week’s newsletter links to a website that tracks miner support for taproot activation, announces a new organization funding Bitcoin research and development, and includes our regular sections with popular questions and answers from the Bitcoin StackExchange, announcements of releases and release candidates, and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #124
This week’s newsletter contains a warning about backdoored VM images. Also included are our regular sections with summaries of notable improvements to clients and services, announcements of releases and release candidates, and changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #123
This week’s newsletter shares the announcement of a marketplace for incoming LN channels. Also included are our regular sections with summaries of a Bitcoin Core PR Review Club meeting and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #122
This week’s newsletter summarizes a discussion about bi-directional upfront fees for LN and relays the results of a small survey among experts about their preferences for taproot activation. Also included are our regular sections with updates about various projects.
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Bitcoin Optech Newsletter #121
This week’s newsletter describes the disclosure of two vulnerabilities in LND and includes our regular sections with summaries of popular questions and answers from the Bitcoin StackExchange, announcements of releases and release candidates, and descriptions of changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #120
This week’s newsletter provides an overview of the new MuSig2 paper, summarizes additional discussion about upfront fees in LN, and describes a proposal to simplify management of LN payments. Also included are our regular sections with summaries of notable improvements to clients and services, announcements of releases and release candidates, and changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #119
This week’s newsletter relays a security warning for LND users, summarizes discussion about LN upfront payments, describes a mailing list thread about updating bech32 addresses for taproot, and links to an updated proposal for an alternative way to secure LN payments. Also included are our regular sections with summaries 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 #118
This week’s newsletter describes a revised proposal for a generic message signing protocol. Also included are our regular sections describing releases, release candidates, and notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #117
This week’s newsletter describes a compiler bug that casts doubt on the safety of secure systems and explains a technique that can be used to more efficiently verify ECDSA signatures in Bitcoin. Also included are our regular sections with popular questions and answers from the Bitcoin StackExchange, announcements of releases and release candidates, and summaries of notable changes to popular Bitcoin infrastructure software.
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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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