Bitcoin Optech newsletter #421 is here: - describes an idea for pools to pay miners using silent payments in the coinbase transaction - summarizes the responsible disclosure of a denial-of-service vulnerability affecting older versions of Core Lightning - continues discussion of PQC output types - summarizes the DropKick commit/reveal PQC rescue idea - links to the SHRINCS draft BIP - examines several BIP448 and CSFS/CTV demos and applications - Optech Newsletter #421 Podcast

Bitcoin Optech

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...

average_gary posted to Delving Bitcoin about his idea for how pools could pay miners to different addresses directly in the coinbase transaction...

Bitcoin Optech

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...

Erick Cestari posted to Delving Bitcoin the responsible disclosure of a critical denial-of-service (DoS) vulnerability affecting CLN nodes running versions prior to 25.09...

Bitcoin Optech

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...

Following last month’s summary of Pieter Wuille’s Delving Bitcoin thread on post-quantum output types, Wuille replied to Conduition’s argument that pairing CISA with P2TRv2 would strongly incentivize migration...

Bitcoin Optech

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...

Conduition posted to the Bitcoin-Dev mailing list a sketch of DropKick, a commit/reveal post-quantum rescue protocol for users who have not moved coins to PQC-enabled outputs by Q-day...

Bitcoin Optech

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...

Conduition posted to the Bitcoin-Dev mailing list, on behalf of the SHRINCS working group, a first draft specifying SHRINCS as a semi-stateful hash-based signature scheme for Bitcoin...

Bitcoin Optech

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...

Work around BIP448 continues with new sites aggregating demos, implementations, and proofs of concept...

Bitcoin Optech

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...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

Bitcoin Optech newsletter #420 is here: - 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 - describes a request for comments on using block-range filters - Optech Newsletter #420 Podcast

Bitcoin Optech

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...

Christian Decker described a forthcoming CLN v26.06.7 point security release, noting no vulnerability is known to be actively exploited...

Bitcoin Optech

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...

Moonsettler posted to Delving Bitcoin to discuss the possibility of introducing an opt-in replay protection mechanism in case of future forks...

Bitcoin Optech

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...

Ava Chow (achow101) announced that the Hardware Wallet Interface (HWI) project will scale back to maintenance-only work and eventually be archived...

Bitcoin Optech

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...

Optout posted to Delving Bitcoin a request for comments (RFC) on a proposal to use block-range filters to reduce the total download size when using compact block filters...

Bitcoin Optech

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...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

Bastien Teinturier, Salvatore Ingala, and spacebear joined Optech to discuss Newsletter #419: - Reorg vulnerability in LND channel closes - Draft BIP for `rawtr()` output script descriptor - Ledger Bitcoin app 2.5.0 adds human-readable policy descriptions - Payjoin Dev Kit (rust-payjoin) 1.0.0 released - And more You can listen on our website:

Bitcoin Optech

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 News...

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Bitcoin Optech Podcast • Bitcoin Optech: Newsletter #419 Recap • Listen on Fountain

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Bastien Teinturier, Salvatore Ingala, and spacebear to discuss New...

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Podcast Episode · Bitcoin Optech Podcast · August 26 · 2h

Michael Ford (fanquake) and Martin Zumsande joined Optech to discuss Newsletter #418: - Static Bitcoin Core binaries available for testing - Replacing per-peer transaction rate-limiting with global rate limits - Conditional message transfer contract to solve jamming - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #418 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Michael Ford (fanquake) and Martin Zumsande to discuss Newsletter #...

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Bitcoin Optech: Newsletter #418 Recap

Podcast Episode · Bitcoin Optech Podcast · August 18 · 1h 16m

Conduition, Ram, and Fabian Jahr joined Optech to discuss Newsletter #417: - Draft BIP for stale tip relay - CISA for taproot keypath spends (BIP460) - Segwit commitment to post-quantum witness data - PQC output type discussion - Input-triggered transaction expiry - Layered quantum recovery of hashed addresses - Segregated Data (SegData) BIP draft - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #417 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Conduition, Ram, and Fabian Jahr to discuss Newsletter #417.

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Bitcoin Optech Podcast • Bitcoin Optech: Newsletter #417 Recap • Listen on Fountain

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Conduition, Ram, and Fabian Jahr to discuss Newsletter #417.News�...

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Bitcoin Optech: Newsletter #417 Recap

Podcast Episode · Bitcoin Optech Podcast · August 12 · 1h 40m

Bitcoin Optech newsletter #417 is here: - describes a draft BIP for relaying stale block tips between peers - summarizes a draft BIP for cross-input signature aggregation - examines a design for attaching post-quantum witness data - links to a discussion of post-quantum output types - summarizes discussions around transaction expiry - points to a proposal for layered quantum recovery of hashed addresses - describes a proposal to add a prunable block region for arbitrary data - Optech Newsletter #417 Podcast

Bitcoin Optech

Bitcoin Optech Newsletter #417

This week’s newsletter describes a draft BIP for relaying stale block tips between peers. Also included are our regular sections summarizing prop...

Ram and w0xlt posted to the Bitcoin-Dev mailing list about the proposal for an opt-in P2P message for relaying stale tips between peers...

Bitcoin Optech

Bitcoin Optech Newsletter #417

This week’s newsletter describes a draft BIP for relaying stale block tips between peers. Also included are our regular sections summarizing prop...

Fabian Jahr posted to the Bitcoin-Dev mailing list a draft of BIP460 for transaction-wide cross-input signature aggregation (CISA) of taproot-style keypath spends...

Bitcoin Optech

Bitcoin Optech Newsletter #417

This week’s newsletter describes a draft BIP for relaying stale block tips between peers. Also included are our regular sections summarizing prop...

Pieter Wuille posted to Delving Bitcoin a design for attaching post-quantum witness data without repeating all of segwit’s deployment costs...

Bitcoin Optech

Bitcoin Optech Newsletter #417

This week’s newsletter describes a draft BIP for relaying stale block tips between peers. Also included are our regular sections summarizing prop...

Pieter Wuille opened a Delving Bitcoin thread to centralize discussion of post-quantum output types...

Bitcoin Optech

Bitcoin Optech Newsletter #417

This week’s newsletter describes a draft BIP for relaying stale block tips between peers. Also included are our regular sections summarizing prop...

Josh Doman posted to Delving Bitcoin a construction for expiring HTLCs without free relay, then generalized it in a follow-up on input-triggered transaction expiry...

Bitcoin Optech

Bitcoin Optech Newsletter #417

This week’s newsletter describes a draft BIP for relaying stale block tips between peers. Also included are our regular sections summarizing prop...

Shinobi posted to the Bitcoin-Dev mailing list and cross-posted to Delving Bitcoin a layered recovery plan for coins secured by hashed address types...

Bitcoin Optech

Bitcoin Optech Newsletter #417

This week’s newsletter describes a draft BIP for relaying stale block tips between peers. Also included are our regular sections summarizing prop...

MrHash posted to Delving Bitcoin companion BIP drafts for Segregated Data, a soft fork that would add a prunable, script-isolated block region for arbitrary data carriage...

Bitcoin Optech

Bitcoin Optech Newsletter #417

This week’s newsletter describes a draft BIP for relaying stale block tips between peers. Also included are our regular sections summarizing prop...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

Rob Hamilton, PortlandHODL, Chandra Pratap, and fabohax joined Optech to discuss Newsletter #416: - Move funds secured by COLDCARD-generated keys - Wallets generated by COLDCARD at risk of theft - Disclosure of two DoS vulnerabilities in Core Lightning - Proof of concept for a zero-knowledge proof of reserves - Selected Q&A from the Bitcoin Stack Exchange - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #416 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Rob Hamilton, PortlandHODL, Chandra Pratap, and fabohax to discuss ...

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Join Bitcoin Optech as we discuss Bitcoin and Lightning technology each week and review our newsletters. https://bitcoinops.org/

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Bitcoin Optech: Newsletter #416 Recap

Podcast Episode · Bitcoin Optech Podcast · August 5 · 2h 7m

Bitcoin Optech newsletter #416 is here: - warns about a severe vulnerability affecting wallets generated by COLDCARD signing devices - summarizes the disclosure of two denial-of-service vulnerabilities in Core Lightning - describes a proof of concept for a zero-knowledge proof of reserves - summarizes popular Q&A from Stack Exchange - Optech Newsletter #416 Podcast

Bitcoin Optech

Bitcoin Optech Newsletter #416

This week’s newsletter warns about a severe vulnerability affecting wallets generated by COLDCARD signing devices, summarizes the disclosure of t...

If you used a COLDCARD to generate a wallet, any funds received by that wallet are at risk of theft and should be carefully moved to an unaffected wallet as soon as possible...

Bitcoin Optech

Bitcoin Optech Newsletter #416

This week’s newsletter warns about a severe vulnerability affecting wallets generated by COLDCARD signing devices, summarizes the disclosure of t...

On 30 July 2026, some Bitcoin users discovered that funds from their COLDCARD wallets had been stolen in a series of unexpected transactions on 29 July. Over the course of the day, a bug was identified in the firmware of the COLDCARD that causes wallets to be generated with insufficient entropy. As of this writing, estimated losses exceed 1,000 BTC, a figure that may continue to rise as the situation develops...

Bitcoin Optech

Bitcoin Optech Newsletter #416

This week’s newsletter warns about a severe vulnerability affecting wallets generated by COLDCARD signing devices, summarizes the disclosure of t...

Chandra Pratap posted to Delving Bitcoin about two denial-of-service (DoS) vulnerabilities he found in Core Lightning...

Bitcoin Optech

Bitcoin Optech Newsletter #416

This week’s newsletter warns about a severe vulnerability affecting wallets generated by COLDCARD signing devices, summarizes the disclosure of t...

fabohax posted about zkPoH (“zero-knowledge proof-of-hodl”), a proof of concept for a non-custodial proof of reserves system for Bitcoin...

Bitcoin Optech

Bitcoin Optech Newsletter #416

This week’s newsletter warns about a severe vulnerability affecting wallets generated by COLDCARD signing devices, summarizes the disclosure of t...

Selected Q&A from Bitcoin Stack Exchange - What is Bitcoin’s objective definition of transaction neutrality? - Why does BIP110’s decentralization benefit not outweigh its impact on transaction neutrality? - Why does BIP110 require a 55% signaling threshold if its nodes reject non-signaling blocks? - Why use ElligatorSwift encoding in BIP324? - Was the OP_SUCCESSx reservation in BIP342 designed with specific opcode families in mind? - What is the difference between the long-term feerate and the discard feerate? - What is the quickest method for migrating a legacy wallet to a descriptor wallet on a pruned node? - Is there historical data on orphan/stale block rates during high-fee periods?

Bitcoin Optech

Bitcoin Optech Newsletter #416

This week’s newsletter warns about a severe vulnerability affecting wallets generated by COLDCARD signing devices, summarizes the disclosure of t...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

PSA: Wallets generated by Coldcard at risk! Wallets generated by Coldcard Mk3 using a firmware version 4.0.1 (March 2021) or later, up to the latest version may be vulnerable to theft, unless used in combination with a strong passphrase or entropy was generated externally. Please see the Coinkite security advisory (https://blog.coinkite.com/coldcard-mk3-seed-generation-warning/). The attack is easy to reproduce with LLM assistance. There are reports that Mk2, Mk4, and Mk5 may be affected by (weaker) variants of the same vulnerability. If your wallet may be affected, please carefully move your funds to an unaffected wallet ASAP.

Fabian Jahr, Kruw, and Mojo joined Optech to discuss Newsletter #415: - Draft BIP for full aggregation of BIP340 signatures - Changes to services and client software including Wasabi, Coinswap, Go secp256k1, an ASMap dashboard, Wavelength - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #415 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Fabian Jahr, Kruw, and Mojo to discuss Newsletter #415.

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Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Fabian Jahr, Kruw, and Mojo to discuss ⁠Newsletter #415⁠.News�...

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Bitcoin Optech: Newsletter #415 Recap

Podcast Episode · Bitcoin Optech Podcast · July 28 · 1h 49m

Bitcoin Optech newsletter #415 is here: - describes a draft BIP for full aggregation of BIP340 signatures - summarizes changes to services/client software - Optech Newsletter #415 Podcast

Bitcoin Optech

Bitcoin Optech Newsletter #415

This week’s newsletter describes a draft BIP for full aggregation of BIP340 signatures. Also included are our regular sections describing recent ...

Fabian Jahr posted to the Bitcoin-Dev mailing list about a new draft BIP for full aggregation of BIP340 schnorr signatures, a standard for the DahLIAS aggregate signature scheme...

Bitcoin Optech

Bitcoin Optech Newsletter #415

This week’s newsletter describes a draft BIP for full aggregation of BIP340 signatures. Also included are our regular sections describing recent ...

Changes to services and client software: - Wasabi Wallet 2.8.0 released - Coinswap v0.2.2 released - Go secp256k1 library announced - ASMap dashboard announced - Wavelength alpha released

Bitcoin Optech

Bitcoin Optech Newsletter #415

This week’s newsletter describes a draft BIP for full aggregation of BIP340 signatures. Also included are our regular sections describing recent ...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

Keagan McClelland and Andrew Toth joined Optech to discuss Newsletter #414: - Formal verification of the Bitcoin protocol - Bitcoin Core 30.3, Bitcoin Core 29.4 - Parallel input fetching in Bitcoin Core - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #414 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Keagan McClelland and Andrew Toth to discuss Newsletter #414.

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Bitcoin Optech Podcast • Bitcoin Optech: Newsletter #414 Recap • Listen on Fountain

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Keagan McClelland and Andrew Toth to discuss Newsletter #414.News�...

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Bitcoin Optech: Newsletter #414 Recap

Podcast Episode · Bitcoin Optech Podcast · July 21 · 1h 34m

Bitcoin Optech newsletter #414 is here: - describes a new project to apply formal verification to the Bitcoin protocol - Bitcoin Core 30.3, Bitcoin Core 29.4 - Optech Newsletter #414 Podcast

Bitcoin Optech

Bitcoin Optech Newsletter #414

This week’s newsletter describes a new project to apply formal verification to the Bitcoin protocol. Also included are our regular sections annou...

Keagan McClelland posted to the Bitcoin-Dev mailing list and Delving Bitcoin about his effort to formally verify the Bitcoin protocol...

Bitcoin Optech

Bitcoin Optech Newsletter #414

This week’s newsletter describes a new project to apply formal verification to the Bitcoin protocol. Also included are our regular sections annou...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

Sjors Provoost joined Optech to discuss Newsletter #413: - Using fountain codes for IBD - Bitcoin Core's IPC Mining Interface and Stratum v2 - Bitcoin Core 31.1, LND v0.20.2-beta - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #413 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Sjors Provoost to discuss Newsletter #413.

Fountain: https://fountain.fm/episode/Mr4DojGzekgbOrxFhJWN Spotify:

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Bitcoin Optech: Newsletter #413 Recap

Podcast Episode · Bitcoin Optech Podcast · July 14 · 48m

Bitcoin Optech newsletter #413 is here: - describes research into using fountain codes to allow pruned nodes to contribute to initial block download - Bitcoin Core 31.1, LND v0.20.2-beta - Optech Newsletter #413 Podcast

Bitcoin Optech

Bitcoin Optech Newsletter #413

This week’s newsletter describes research into using fountain codes to allow pruned nodes to contribute to initial block download. Also included ...

Lucas Lima posted to Delving Bitcoin about his latest research on using fountain codes to allow pruned nodes to contribute to Initial Block Download (IBD), without significantly increasing their storage requirements...

Bitcoin Optech

Bitcoin Optech Newsletter #413

This week’s newsletter describes research into using fountain codes to allow pruned nodes to contribute to initial block download. Also included ...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

Conduition and Jeremy Rubin joined Optech to discuss Newsletter #412: - Benchmarking SLH-DSA STARK aggregation - Bird of Prey 2 (BoP-2) non-malleable schnorr and PQ signatures - Lattice-based signatures - Public key recovery for P2MR EC leaves - Aligning privacy incentives in P2MR - Prohibit merkle internal node preimages that encode minimal 64-byte transactions - Triggering EC disabling with a NUMS point spend or hashrate majority - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #412 Recap Podcast

Mark “Murch” Erhardt and Mike Schmidt are joined by Conduition and Jeremy Rubin to discuss Newsletter #412.

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Bitcoin Optech: Newsletter #412 Recap

Podcast Episode · Bitcoin Optech Podcast · July 8 · 1h 57m

Bitcoin Optech newsletter #412 is here: - links to benchmarking around SLH-DSA STARK aggregation - points to discussion of a paper on constructing hybrid strongly-unforgeable signature schemes - examines lattice-based PQ signatures - describes a proposal for public key recovery for P2MR EC leaves - summarizes a thread on aligning privacy incentives in P2MR - describes and alternative to banning all 64-byte transactions - summarizes a proposal to trigger EC disabling with a NUMS point spend or hashrate majority - Optech Newsletter #412 Podcast

Bitcoin Optech

Bitcoin Optech Newsletter #412

This week’s newsletter includes our regular sections summarizing discussion about changing Bitcoin’s consensus rules, announcing new releases a...

Remix7531 posted to the Bitcoin-Dev mailing list his benchmark results for aggregating many SPHINCS signature verifications into a single STARK proof...

Bitcoin Optech

Bitcoin Optech Newsletter #412

This week’s newsletter includes our regular sections summarizing discussion about changing Bitcoin’s consensus rules, announcing new releases a...

Pieter Wuille posted to Delving Bitcoin about a EuroCrypt 2026 paper on constructing hybrid strongly-unforgeable signature schemes from a schnorr-like scheme and an arbitrary post-quantum signature scheme...

Bitcoin Optech

Bitcoin Optech Newsletter #412

This week’s newsletter includes our regular sections summarizing discussion about changing Bitcoin’s consensus rules, announcing new releases a...

Nikita Karetnikov posted to Delving Bitcoin and cross-posted to the Bitcoin-Dev mailing list about a Blockstream blog post comparing post-quantum signature families, where lattice-based schemes appear favorable on size and functionality...

Bitcoin Optech

Bitcoin Optech Newsletter #412

This week’s newsletter includes our regular sections summarizing discussion about changing Bitcoin’s consensus rules, announcing new releases a...

starius posted to Delving Bitcoin a proposal to add a recoverable elliptic curve (EC) key leaf type to BIP360 (P2MR). The idea is to recover the EC public key from the schnorr signature...

Bitcoin Optech

Bitcoin Optech Newsletter #412

This week’s newsletter includes our regular sections summarizing discussion about changing Bitcoin’s consensus rules, announcing new releases a...

Conduition posted to the Bitcoin-Dev mailing list a proposed BIP360 (P2MR) change to require every P2MR control block to include at least one 32-byte merkle authentication path (i.e. ban depth-zero script trees)...

Bitcoin Optech

Bitcoin Optech Newsletter #412

This week’s newsletter includes our regular sections summarizing discussion about changing Bitcoin’s consensus rules, announcing new releases a...

Jeremy Rubin posted to the Bitcoin-Dev mailing list a draft BIP proposing an alternative to the consensus cleanup (BIP54) rule making 64-byte witness-stripped transactions consensus-invalid...

Bitcoin Optech

Bitcoin Optech Newsletter #412

This week’s newsletter includes our regular sections summarizing discussion about changing Bitcoin’s consensus rules, announcing new releases a...

Pieter Wuille wrote to the Bitcoin-Dev mailing list about codifying the expected future disabling of elliptic curve (EC) spending paths within new post-quantum output types such as BIP360 (P2MR) and P2TRv2...

Bitcoin Optech

Bitcoin Optech Newsletter #412

This week’s newsletter includes our regular sections summarizing discussion about changing Bitcoin’s consensus rules, announcing new releases a...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

Nishant Bansal and Matthew Zipkin joined Optech to discuss Newsletter #411: - LND zero-timestamp gossip DoS disclosure - Removal of the libevent library in Bitcoin Core - Selected Q&A from the Bitcoin Stack Exchange - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #411 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Nishant Bansal and Matthew Zipkin to discuss Newsletter #411.

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Bitcoin Optech: Newsletter #411 Recap

Podcast Episode · Bitcoin Optech Podcast · July 1 · 1h 56m

Bitcoin Optech newsletter #411 is here: - describes the responsible disclosure of a denial-of-service vulnerability that affected older versions of LND - summarizes popular Q&A from Stack Exchange - Optech Newsletter #411 Podcast

Bitcoin Optech

Bitcoin Optech Newsletter #411

This week’s newsletter describes the responsible disclosure of a denial-of-service vulnerability that affected older versions of LND. Also includ...

Nishant Bansal posted to Delving Bitcoin disclosing a denial-of-service vulnerability he discovered through state-machine fuzzing of LND’s gossip handling...

Bitcoin Optech

Bitcoin Optech Newsletter #411

This week’s newsletter describes the responsible disclosure of a denial-of-service vulnerability that affected older versions of LND. Also includ...

Selected Q&A from Bitcoin Stack Exchange - Is it a bug that OP_IF is part of the tapscript opcodes? - Why would forbidding OP_IF in tapscript be a problem? - Does a softfork always succeed? - How to set up Bitcoin Core to mine a valid block after the BIP110 activation in August 2026? - Are BIP110 blocks on a branch with lower difficulty valid? - What is the story behind Bitcoin test networks? - Why was -datacarriersize redefined in 2022, and why was the 2023 proposal to expand it not merged? - Are chains of 26 unconfirmed transactions prohibited by the wallet in Bitcoin Core 31.0? - Are there changes in Bitcoin Core 29.0 that affect memory usage? - What is Bitcoin Core’s release schedule?

Bitcoin Optech

Bitcoin Optech Newsletter #411

This week’s newsletter describes the responsible disclosure of a denial-of-service vulnerability that affected older versions of LND. Also includ...

Bitcoin Optech will host an audio recap discussion of this newsletter streaming live on X/Twitter Tuesday at 16:30 UTC.

rkrux, Roland Bewick, and Steven Roose joined Optech to discuss Newsletter #410: - Discussion of removing RBF signaling from wallet transactions - Changes to services and client software including Sparrow, Alby, JoinMarket NG, Bark, Arké, Noah - And more You can listen on our website:

Bitcoin Optech

Bitcoin Optech Newsletter #410 Recap Podcast

Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by rkrux, Roland Bewick, and Steven Roose to discuss Newsletter #410.

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Podcast Episode · Bitcoin Optech Podcast · June 23 · 1h 19m