Publications
Recent publications from our blog posts and newsletters.
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Bitcoin Optech Newsletter #153
This week’s newsletter celebrates the lock-in of the taproot soft fork, describes a draft BIP for improving transaction privacy by varying the fields used to implement anti fee sniping, and features an article about the challenges of combining transaction replacement with payment batching. Also included are our regular sections with announcements of new software releases and release candidates, plus notable changes to popular Bitcoin infrastructure software.
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Field Report: Using RBF and Additive Batching
"Additive batching" is a scheme whereby additional outputs are included to unconfirmed transactions in the mempool. This field report outlines efforts CardCoins has taken in introducing a reorg and DoS safe implementation of such a scheme in its customer payout workflow. -
Bitcoin Optech Newsletter #152
This week’s newsletter describes a proposal to allow LN nodes to receive payments without keeping their private keys online all the time. Also included are our regular sections with the summary of a Bitcoin Core PR Review Club meeting, announcements of new software releases and release candidates, and descriptions of notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #151
This week’s newsletter describes a proposal to change Bitcoin Core’s transaction selection algorithm for miner block templates to slightly increase miner profitability and give fee bumping users more collective leverage. Also included are our regular sections describing software releases and release candidates, plus notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #150
This week’s newsletter announces a change of networks for several IRC channels and celebrates Optech’s 150th newsletter. Also included are our regular sections with popular questions and answers from the Bitcoin Stack Exchange, new software releases and release candidates, and notable changes to popular Bitcoin infrastructure projects.
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Bitcoin Optech Newsletter #149
This week’s newsletter provides updates on the previously proposed transaction relay reliability workshop and CVE-2021-31876. Also included are our regular sections describing updates 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 #148
This week’s newsletter describes a security disclosure affecting protocols depending on a certain BIP125 opt-in replace by fee behavior and includes our regular sections with the summary of a Bitcoin Core PR Review Club meeting, announcements of new software releases and release candidates, and descriptions of notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #147
This week’s newsletter encourages miners to start signaling for taproot and describes continued discussion about closing lost LN channels using only a wallet seed. Also included are our regular sections with announcements of releases and release candidates, plus notable changes to popular Bitcoin infrastructure software.
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Bitcoin Optech Newsletter #146
This week’s newsletter describes a draft specification for LN splicing, announces a workshop about transaction relay security, announces the addition of ECDSA signature adaptor support to libsecp256k1-zkp, and links to proposals to change the BIPs process. Also included are our regular sections with summaries of popular questions and answers from the Bitcoin StackExchange, announcements of software releases and release candidates, and descriptions of notable changes to popular Bitcoin infrastructure software.
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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.
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