Bitcoin Optech newsletter #386 is here:
- summarizes a vault-like scheme using blinded MuSig2
- describes a proposal for Bitcoin clients to announce and negotiate support for new P2P features
- links to 2106 timestamp overflow discussion and considerations around BIP54
- notes a CTV activation meeting and CTV footgun discussion
- summarizes the OP_CHECKCONSOLIDATION proposal
- links to a report of hash-based post-quantum signature schemes
- Optech Newsletter #386 Podcast
https://bitcoinops.org/en/newsletters/2026/01/02/
Jonathan T. Halseth posted to Delving Bitcoin a prototype of a vault-like scheme using blinded co-signers. Unlike traditional setups using co-signers, this scheme uses a blinded version of MuSig2 to ensure the signers know as little as possible about the funds they are involved in signing...
https://bitcoinops.org/en/newsletters/2026/01/02/#building-a-vault-using-blinded-co-signers
Anthony Towns posted to the Bitcoin-Dev mailing list about a proposal for a new BIP to define a P2P message that would allow peers to announce and negotiate support for new features...
https://bitcoinops.org/en/newsletters/2026/01/02/#peer-feature-negotiation
Asher Haim posted to the Bitcoin-Dev mailing list asking Bitcoin developers to act promptly to prepare for a migration from uint32 to uint64 block timestamps...
https://bitcoinops.org/en/newsletters/2026/01/02/#year-2106-timestamp-overflow-uint64-migration
Josh Doman posted to the Bitcoin-Dev mailing list and Delving Bitcoin asking whether it’s might be worthwhile to modify the consensus cleanup proposal to be more permissive to odd block timestamp behavior to allow a potential soft fork solution to the 2106 block timestamp overflow issue...
Chris Stewart posted to Delving Bitcoin a discussion of a “footgun” with OP_CHECKTEMPLATEVERIFY (CTV)...
https://bitcoinops.org/en/newsletters/2026/01/02/#understanding-and-mitigating-a-ctv-footgun
Developer 1440000bytes hosted a CTV (BIP119) activation meeting...
https://bitcoinops.org/en/newsletters/2026/01/02/#ctv-activation-meeting
billymcbip proposed an opcode specifically optimized for consolidations. OP_CHECKCONSOLIDATION (CC) would evaluate to 1 if and only if it’s executed on an input with the same scriptPubKey as an earlier input in the same transaction...
Mikhail Kudinov and Jonas Nick posted to the Bitcoin-Dev mailing list about their work on evaluating hash-based signatures for use in Bitcoin...
Bitcoin Optech will host an audio recap discussion of this newsletter on http://Riverside.fm Tuesday at 17:30 UTC. Join us to discuss or ask questions!
Bastien Teinturier, Rearden Code, and Pieter Wuille joined Optech to discuss Newsletter #385: 2025 Year-in-Review Special.
Catch up on Bitcoin developments in 2025.
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/12/23/
Spotify:
https://open.spotify.com/episode/5zOXBAt2NHVWEVtESfFD5P
Apple Podcasts:
Bitcoin Optech newsletter #385: 2025 Year-in-Review Special is here:
- notes Bitcoin developments during each month of 2025
- feature: Vulnerability disclosures
- feature: Quantum
- feature: Soft fork proposals
- feature: Stratum v2
- feature: Major releases of popular infrastructure projects
- feature: Optech
https://bitcoinops.org/en/newsletters/2025/12/19/
In 2025, Optech summarized more than a dozen vulnerability disclosures...
https://bitcoinops.org/en/newsletters/2025/12/19/#vulns
With the increased attention on the potential for a future quantum computer to weaken or break the Elliptic Curve Discrete Logarithm (ECDL) hardness assumption that Bitcoin relies on to prove the ownership of coins, several conversations and proposals were put forward throughout the year to discuss and mitigate the impact of such a development.
https://bitcoinops.org/en/newsletters/2025/12/19/#quantum
This year saw a bevy of discussions around soft fork proposals, ranging from the tightly scoped and minimally impactful, to the broadly scoped and powerful…
https://bitcoinops.org/en/newsletters/2025/12/19/#softforks
Stratum v2 is a mining protocol designed to replace the original Stratum protocol used between miners and mining pools. Throughout 2025, Bitcoin Core received several updates to better support Stratum v2 implementations....
https://bitcoinops.org/en/newsletters/2025/12/19/#stratumv2
Optech covered major releases of popular infrastructure projects throughout the year...
https://bitcoinops.org/en/newsletters/2025/12/19/#releases
In Optech’s eighth year, we published:
- 50 newsletters
- over 80,000 words, a 225pg book equivalent
- over 60hrs of podcasts, with 500,000 words of transcripts w/75 guests
- 150+ non-English translations
https://bitcoinops.org/en/newsletters/2025/12/19/#optech
A special thank you
After contributing as the primary author for 376 consecutive Bitcoin Optech newsletters, Dave Harding stepped back from contributing regularly this year. We cannot thank Harding enough for anchoring the newsletter for eight years and all of the Bitcoin education, elucidation, and understanding he brought the community. We are eternally grateful and wish him all the best.
Bitcoin Optech will host an audio recap discussion of this special newsletter on Riverside.fm Tuesday at 17:30 UTC. Join us to discuss or ask questions!
Matt Morehouse and Salvatore Ingala joined Optech to discuss Newsletter #384:
- Vulnerabilities fixed in LND 0.19.0
- A virtualized secure enclave for hardware signing devices
- 7 updates to services and client software
- 3 questions from the Bitcoin Stack Exchange
- And More
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/12/16/
Fountain:
https://fountain.fm/episode/ISFK9esZAmFyJFGGdafW
Spotify:
https://open.spotify.com/episode/2nvIdmLhoJRWKNQkynBVG8
Apple Podcasts:
Bitcoin Optech newsletter #384 is here:
- discloses vulnerabilities in LND
- describes a project for running a virtual machine in an embedded secure element
- summarizes changes to services/client software
- summarizes popular Q&A from Stack Exchange
- Optech Newsletter #384 Podcast
https://bitcoinops.org/en/newsletters/2025/12/12/
Matt Morehouse posted to Delving Bitcoin about critical vulnerabilities fixed in LND 0.19.0...
https://bitcoinops.org/en/newsletters/2025/12/12/#critical-vulnerabilities-fixed-in-lnd-0-19-0
Salvatoshi posted to Delving Bitcoin about Vanadium, a virtualized secure enclave for hardware signing devices...
Changes to services and client software:
- Interactive transaction visualization tool
- BlueWallet v7.2.2 released
- Stratum v2 updates
- Auradine announces Stratum v2 support
- LDK Node 0.7.0 released
- BIP-329 Python Library 1.0.0 release
- Bitcoin Safe 1.6.0 released
https://bitcoinops.org/en/newsletters/2025/12/12/#changes-to-services-and-client-software
Selected Q&A from Bitcoin Stack Exchange:
- Does a clearnet connection to my Lightning node require a TLS certificate?
- Why do different implementations produce different DER signatures for the same private key and hash?
- Why is the miniscript after value limited at 0x80000000?
https://bitcoinops.org/en/newsletters/2025/12/12/#selected-qa-from-bitcoin-stack-exchange
Bitcoin Optech will host an audio recap discussion of this newsletter on http://Riverside.fm Tuesday at 17:30 UTC. Join us to discuss or ask questions!
Moonsettler and Julian joined Optech to discuss Newsletter #383:
- A consensus bug in the NBitcoin library found with differential fuzzing
- LNHANCE soft fork proposal updates
- Benchmarking Bitcoin Script under the proposed varops budget
- Optimizations to SLH-DSA (SPHINCS) post-quantum signatures
- And More
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/12/09/
Fountain:
https://fountain.fm/episode/hWoSXyZivt2VIK3sD2m5
Spotify:
https://open.spotify.com/episode/7xoG5U9JOs579CkQhc1G58
Apple Podcasts:
Bitcoin Optech newsletter #383 is here:
- describes a fixed vulnerability affecting the NBitcoin library
- summarizes the LNHANCE soft fork proposal
- relays a call to action to benchmark Bitcoin script execution under GSR's varops budget
- highlights discussion of optimizations to SLH-DSA (SPHINCS) post-quantum signatures
- Optech Newsletter #383 Podcast
https://bitcoinops.org/en/newsletters/2025/12/05/
Bruno Garcia posted to Delving Bitcoin about a theoretical consensus failure in NBitcoin that could occur when using OP_NIP...
https://bitcoinops.org/en/newsletters/2025/12/05/#consensus-bug-in-nbitcoin-library
Moonsettler proposes a soft fork for LNHANCE now that all four of its constituent opcodes have updated BIPs and reference implementations...
https://bitcoinops.org/en/newsletters/2025/12/05/#lnhance-soft-fork
Julian posted a call to action to benchmark Bitcoin script execution under the varops budget...
https://bitcoinops.org/en/newsletters/2025/12/05/#benchmarking-the-varops-budget
Continuing the discussions around hardening Bitcoin against quantum computing, conduition presented his work on optimizing the SPHINCS signing algorithm...
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 17:30 UTC. Join us to discuss or ask questions!
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt discuss Newsletter #382:
- Updated stats on compact block reconstructions
- A motion to activate BIP3 and replace the current BIP process
- 3 questions from the Bitcoin Stack Exchange
- And more
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/12/02/
Fountain:
https://fountain.fm/episode/93Jhx6LCQCiZDKQYppJ8
Spotify:
https://open.spotify.com/episode/3RlXvoyRoZW5Rw1u3GcsIM
Apple Podcasts:
Bitcoin Optech newsletter #382 is here:
- provides an update on compact block reconstruction discussions
- relays a call to activate BIP3
- summarizes popular Q&A from Stack Exchange
- Optech Newsletter #382 Podcast
https://bitcoinops.org/en/newsletters/2025/11/28/
0xB10C posted an update to Delving Bitcoin about his statistics around compact block reconstruction...
https://bitcoinops.org/en/newsletters/2025/11/28/#stats-on-compact-block-reconstructions-updates
Murch posted to the Bitcoin-Dev mailing list a formal motion to activate BIP3...
https://bitcoinops.org/en/newsletters/2025/11/28/#motion-to-activate-bip3
Selected Q&A from Bitcoin Stack Exchange:
- Do pruned nodes store witness inscriptions?
- Increasing probability of block hash collisions when difficulty is too high
- What is the purpose of the initial 0x04 byte in all extended public and private keys?
https://bitcoinops.org/en/newsletters/2025/11/28/#selected-qa-from-bitcoin-stack-exchange
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 17:30 UTC. Join us to discuss or ask questions!
Antoine Poinsot and ZmnSCPxj joined Optech to discuss Newsletter #381:
- Modeling stale rates by propagation delay and mining centralization
- Private key handover for collaborative closure
- Updates to services and client software
- And more
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/11/25/
Fountain:
https://fountain.fm/episode/3zDWx0jj8JOTj9ukAoC6
Spotify:
https://open.spotify.com/episode/0BsoRU9mZZiLLlDYFtLo0W
Apple Podcasts:
Bitcoin Optech newsletter #381 is here:
- looks at an analysis of how block propagation times may affect miner revenue
- describes a new approach for resolving protocols where multiple parties share funds
- summarizes changes to services/client software
- Optech Newsletter #381 Podcast
https://bitcoinops.org/en/newsletters/2025/11/21/
Antoine Poinsot posted to Delving Bitcoin about modeling stale block rates and how block propagation time affects a miner’s revenue as a function of its hashrate...
ZmnSCPxj posted to Delving Bitcoin about private key handover, an optimization that protocols can implement when funds, previously owned by two parties, need to be refunded to a single entity...
https://bitcoinops.org/en/newsletters/2025/11/21/#private-key-handover-for-collaborative-closure
Changes to services and client software:
- Arkade launches
- Mempool monitoring mobile application
- Web-based policy and miniscript IDE
- Phoenix Wallet adds taproot channels
- Nunchuk 2.0 launches
- LN gossip traffic analysis tool announced
https://bitcoinops.org/en/newsletters/2025/11/21/#changes-to-services-and-client-software
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!
TheCharlatan joined Optech to discuss Newsletter #380:
- The Bitcoin Kernel
- And more
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/11/18/
Fountain:
https://fountain.fm/episode/Qmqqq6fCDHTZt1SL0xxi
Spotify:
https://open.spotify.com/episode/5qGvgMkll7x3KQviU8Vm65
Apple Podcasts:
Sebastian Falbesoner, PortlandHODL, Tadge Dryja, and Antoine Poinsot joined Optech to discuss Newsletter #379:
- ECDSA signature validation in OpenSSL vs. libsecp256k1
- Multiple discussions about restricting data
- Post-quantum signature aggregation
- Native STARK proof verification in Bitcoin Script
- BIP54 implementation and test vectors
- And more
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/11/11/
Fountain:
https://fountain.fm/episode/6cQbKPDwMKQ2qu4HA14r
Spotify:
https://open.spotify.com/episode/26JrUei66sLjcgXHMzmsTU
Apple Podcasts:
Bitcoin Optech newsletter #379 is here:
- shares an analysis comparing the historical performance of the OpenSSL and libsecp256k1 libraries
- highlights multiple discussions about restricting data
- summarizes a proposed post-quantum signature aggregation opcode
- summarizes an idea for STARK proof verification in Bitcoin Script
- updates progress on BIP54's consensus cleanup
- Optech Newsletter #379 Podcast
https://bitcoinops.org/en/newsletters/2025/11/07/
Sebastian Falbesoner posted to Delving about comparing the performance of ECDSA signature validation between OpenSSL and libsecp256k1 over the last decade...
Multiple conversations examined ideas to change the limits of various fields in consensus...
https://bitcoinops.org/en/newsletters/2025/11/07/#multiple-discussions-about-restricting-data
Tadge Dryja posted to the Bitcoin-Dev mailing list a proposal for an OP_CHECKINPUTVERIFY (OP_CIV) opcode that enables a locking script to commit to a specific UTXO being spent in the same transaction...
https://bitcoinops.org/en/newsletters/2025/11/07/#post-quantum-signature-aggregation
Abdelhamid Bakhta posted to Delving Bitcoin a detailed proposal for a new tapscript opcode OP_STARK_VERIFY which would enable the verification of a specific variant of STARK proof in Bitcoin Script...
https://bitcoinops.org/en/newsletters/2025/11/07/#native-stark-proof-verification-in-bitcoin-script
Antoine Poinsot posted to the Bitcoin-Dev mailing list an update on his consensus cleanup work on BIP54...
https://bitcoinops.org/en/newsletters/2025/11/07/#bip54-implementation-and-test-vectors
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!
Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #378:
- Disclosure of four low-severity vulnerabilities in Bitcoin Core
- Q&A from Bitcoin Stack Exchange including questions on datacarriersize, OP_TEMPLATEHASH and others
- And more
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/11/04/
Fountain:
https://fountain.fm/episode/52iLDnzzU5I7rxb8coJT
Spotify:
https://open.spotify.com/episode/3gvj03rHM7qT0jTnQcMnfH
Apple Podcasts:
Bitcoin Optech newsletter #378 is here:
- announces four vulnerabilities affecting older versions of the Bitcoin Core full node
- summarizes popular Q&A from Stack Exchange
- Optech Newsletter #378 Podcast
https://bitcoinops.org/en/newsletters/2025/10/31/
Antoine Poinsot recently posted to the Bitcoin-Dev mailing list four Bitcoin Core security advisories for low-severity vulnerabilities that were fixed in Bitcoin Core 30.0...
Selected Q&A from Bitcoin Stack Exchange:
- Why was -datacarriersize redefined in 2022, and why was the 2023 proposal to expand it not merged?
- What is the smallest valid transaction that can be included in a block?
- Why does Bitcoin Core continue to give witness data a discount even when it is used for inscriptions?
- The ever-growing Bitcoin blockchain size?
- I read that OP_TEMPLATEHASH is a variant of OP_CTV. How do they differ?
https://bitcoinops.org/en/newsletters/2025/10/31/#selected-qa-from-bitcoin-stack-exchange
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!
Abubakar Sadiq Ismail and Carla Kirk-Cohen joined Optech to discuss Newsletter #377:
- Detecting block template feerate increases using cluster mempool
- Channel jamming mitigation simulation results and updates
- BULL wallet launches, Sparrow 2.3.0 released
- And more
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/10/28/
Fountain:
https://fountain.fm/episode/8ax8Sb0R5uFGbVnvja6L
Spotify:
https://open.spotify.com/episode/0tCMF2SY7a0RIBj0OPaoqM
Apple Podcasts:
Francesco Madonna and supertestnet joined Optech to discuss Newsletter #376:
- Continued discussion of block template sharing
- B-SSL a Secure Bitcoin Signing Layer
- Bitcoin Core 30.0
- And more
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/10/21/
Fountain:
https://fountain.fm/episode/uYvjTVDINCV7N95sriNu
Spotify:
https://open.spotify.com/episode/2aZv1l0GhSlUSoerkK0rgs
Apple Podcasts:
Sindura Saraswathi, ZmnSCPxj and Eugene Siegel joined Optech to discuss Newsletter #375:
- Optimal Threshold Signatures
- Flattening certain nested threshold signatures
- Theoretical limitations on embedding data in the UTXO set
- The ‘Compact block harness’ Bitcoin Core PR Review Club
- And more
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/10/14/
Fountain:
https://fountain.fm/episode/chMU3zQSD9f2tyCuzW4P
Spotify:
Bitcoin Optech newsletter #376 is here:
- shares an update on the proposal for nodes to share their current block template
- summarizes a paper outlining a covenant-less vault construction
- Bitcoin Core 30.0 release
- Optech Newsletter #376 Podcast
https://bitcoinops.org/en/newsletters/2025/10/17/
Discussion continued around the proposal for full node peers to occasionally send each other their current template for the next block using compact block relay encoding...
https://bitcoinops.org/en/newsletters/2025/10/17/#continued-discussion-of-block-template-sharing
Francesco Madonna posted to Delving Bitcoin about a concept which is a covenant-less vault model using taproot, OP_CHECKSEQUENCEVERIFY, and OP_CHECKLOCKTIMEVERIFY...
https://bitcoinops.org/en/newsletters/2025/10/17/#b-ssl-a-secure-bitcoin-signing-layer
Bitcoin Core 30.0 is the latest version release of the network’s predominant full node. Its release notes describe several significant improvements...
https://bitcoinops.org/en/newsletters/2025/10/17/#bitcoin-core-30-0
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!
Matt Morehouse, Daniela Brozzoni, and Gustavo Flores Echaiz joined Optech to discuss Newsletter #373:
- Eclair vulnerability
- Research into feerate settings
- 12 Bitcoin Stack Exchange questions with an OP_RETURN focus
- Bitcoin Core 30.1 release candidate and testing guide
- And more
You can listen on our website: https://bitcoinops.org/en/podcast/2025/09/30/
Fountain: https://fountain.fm/episode/HUKeJE4y8iPGSD9WL4VS
Spotify: https://open.spotify.com/episode/55tV1tepMDPFtcONy8kHQI
Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-373-recap/id1674626983?i=1000729551630
ZmnSCPxj and Constantine Doumanidis joined Optech to discuss Newsletter #372:
News
16:24 LSP-funded redundant overpayments
1:02 Partitioning and eclipse attacks using BGP interception
Changes to services and client software
13:49 Zero-knowledge proof of reserve tool
15:12 Alternative submarine swap protocol proof of concept
Releases and release candidates
39:14 Bitcoin Core 30.0rc1
1:16:28 BDK Chain 0.23.2
Notable code and documentation changes
1:17:19 Bitcoin Core #33268
1:18:56 Eclair #3157
1:19:52 LND #9975
1:20:21 LND #9677
1:20:41 LDK #4045
1:21:32 LDK #4049
1:22:18 BDK #1582
1:23:13 BDK #2000
1:24:17 BDK #2028
You can listen on our website: https://bitcoinops.org/en/podcast/2025/09/23/
Fountain: https://fountain.fm/episode/roAtQyqbkVOkZxNBz4z0
Spotify: https://open.spotify.com/episode/6lQx7XYXHK6o4u6iEjt1x6
Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-372-recap/id1674626983?i=1000728103838
Bitcoin Optech Newsletter #372 is here:
- summarizes a proposal to enhance LN redundant overpayments
- links to a discussion about potential partitioning attacks against full nodes
- summarizes changes to services/client software
- Optech Newsletter #372 Podcast
https://bitcoinops.org/en/newsletters/2025/09/19/
ZmnSCPxj posted to Delving Bitcoin a proposal to allow LSPs to provide the additional funding (liquidity) required for redundant overpayments...
https://bitcoinops.org/en/newsletters/2025/09/19/#lsp-funded-redundant-overpayments
Developer cedarctic posted to Delving Bitcoin about using flaws in the Border Gateway Protocol (BGP) to prevent full nodes from being able to connect to peers...
Changes to services and client software:
- Zero-knowledge proof of reserve tool
- Alternative submarine swap protocol proof of concept
https://bitcoinops.org/en/newsletters/2025/09/19/#changes-to-services-and-client-software
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!
Mark “Murch” Erhardt and Mike Schmidt discussed Newsletter #368:
News
0:30 Draft BIP for block template sharing
28:07 Trusted delegation of script evaluation
Changes to services and client software
33:07 ZEUS v0.11.3 released
33:25 Rust Utreexo resources
34:11 Peer-observer tooling and call to action
37:22 Bitcoin Core Kernel-based node announced
38:23 SimplicityHL released
39:17 LSP plugin for BTCPay Server
39:42 Proto mining hardware and software announced
40:46 Oracle resolution demo using CSFS
41:11 Relai adds taproot support
Releases and release candidates
43:09 LND v0.19.3-beta
43:29 Bitcoin Core 29.1rc1
43:55 Core Lightning v25.09rc2
Notable code and documentation changes
44:33 Bitcoin Core #32896
46:57 Bitcoin Core #33106
1:02:49 Core Lightning #8467
1:03:26 Core Lightning #8354
1:04:07 Eclair #3103
1:04:43 Eclair #3134
1:05:56 LDK #3897
https://blossom.primal.net/61d1cf39e62cf5894faf1cb8500690cc0b27b016dad243613952df79191e2d3b.mp4
You can listen on our website: https://bitcoinops.org/en/podcast/2025/08/26/
Fountain: https://fountain.fm/episode/P5UDO600jU5Iva3fHFic
Spotify: https://open.spotify.com/episode/0ZPLyRlgDZvh2kN9WV95pF
Apple Podcasts: https://podcasts.apple.com/us/podcast/bitcoin-optech-newsletter-368-recap/id1674626983?i=1000725591869
Mark “Murch” Erhardt and Mike Schmidt discussed Newsletter #368:
News
0:30 Draft BIP for block template sharing
28:07 Trusted delegation of script evaluation
Changes to services and client software
33:07 ZEUS v0.11.3 released
33:25 Rust Utreexo resources
34:11 Peer-observer tooling and call to action
37:22 Bitcoin Core Kernel-based node announced
38:23 SimplicityHL released
39:17 LSP plugin for BTCPay Server
39:42 Proto mining hardware and software announced
40:46 Oracle resolution demo using CSFS
41:11 Relai adds taproot support
Releases and release candidates
43:09 LND v0.19.3-beta
43:29 Bitcoin Core 29.1rc1
43:55 Core Lightning v25.09rc2
Notable code and documentation changes
44:33 Bitcoin Core #32896
46:57 Bitcoin Core #33106
1:02:49 Core Lightning #8467
1:03:26 Core Lightning #8354
1:04:07 Eclair #3103
1:04:43 Eclair #3134
1:05:56 LDK #3897
https://blossom.primal.net/61d1cf39e62cf5894faf1cb8500690cc0b27b016dad243613952df79191e2d3b.mp4
Bitcoin Optech newsletter #370 is here:
- details the design of Simplicity
- links to a draft BIP for adding elliptic curve operations to tapscript
- describes the draft BIP for OP_TWEAKADD
- Optech Newsletter #370 Podcast
https://bitcoinops.org/en/newsletters/2025/09/05/
Russell O’Connor made three posts so far to Delving Bitcoin about “the philosophy and design of the Simplicity language”...
https://bitcoinops.org/en/newsletters/2025/09/05/#details-about-the-design-of-simplicity
Olaoluwa Osuntokun posted to the Bitcoin-Dev mailing list a link to a draft BIP for adding several opcodes to tapscript that will allow elliptic curve operations to be performed on the script evaluation stack...
Jeremy Rubin posted to the Bitcoin-Dev mailing list a link a draft BIP to add OP_TWEAKADD to tapscript...
https://bitcoinops.org/en/newsletters/2025/09/05/#draft-bip-for-op-tweakadd
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!
Bruno Garcia and Liam Eagen joined Optech to discuss Newsletter #369:
News
24:56 Update on differential fuzzing of Bitcoin and LN implementations
0:58 Garbled locks for accountable computing contracts
Selected Q&A from Bitcoin Stack Exchange
39:45 Is it possible to recover a private key from an aggregate public key under strong assumptions?
41:24 Are all taproot addresses vulnerable to quantum computing?
45:20 Why cant we set the chainstate obfuscation key?
52:09 Is it possible to revoke a spending branch after a block height?
53:45 Configure Bitcoin Core to use onion nodes in addition to IPv4 and IPv6 nodes?
Releases and release candidates
54:22 Bitcoin Core 29.1rc2
56:45 Core Lightning v25.09rc4
Notable code and documentation changes
57:37 Bitcoin Core #31802
1:04:46 LDK #3979
1:06:19 LND #10102
1:07:04 Rust Bitcoin #4907
https://blossom.primal.net/ba21f103a0a8888fc9c809ea08682523cc0b56665eb1e014aacd9b3b262978de.mp4
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/09/02/
Fountain:
https://fountain.fm/episode/oGMUPbcYR5TSy63a4Zt8
Spotify:
https://open.spotify.com/episode/5uox6htE8nFOVXFc3Ju9Qq
Apple Podcasts:
Bitcoin Optech Newsletter #369 is here:
- shares an update on differential fuzzing of Bitcoin and LN implementations
- links to a new paper about garbled locks for accountable computing contracts
- summarizes popular Q&A from Stack Exchange
- Optech Newsletter #369 Podcast
https://bitcoinops.org/en/newsletters/2025/08/29/
Bruno Garcia posted to Delving Bitcoin to describe recent progress and accomplishments of bitcoinfuzz, a library and related data for fuzz testing Bitcoin-based software and libraries...
Liam Eagen posted to the Bitcoin-Dev mailing list about a paper he’s written about a new mechanism for creating accountable computing contracts but based on garbled circuits...
https://bitcoinops.org/en/newsletters/2025/08/29/#garbled-locks-for-accountable-computing-contracts
Selected Q&A from Bitcoin Stack Exchange:
- Is it possible to recover a private key from an aggregate public key under strong assumptions?
- Are all taproot addresses vulnerable to quantum computing?
- Why cant we set the chainstate obfuscation key?
- Is it possible to revoke a spending branch after a block height?
- Configure Bitcoin Core to use onion nodes in addition to IPv4 and IPv6 nodes?
https://bitcoinops.org/en/newsletters/2025/08/29/#selected-qa-from-bitcoin-stack-exchange
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!
Bitcoin Optech Newsletter #368 is here:
- summarizes a draft BIP for block template sharing between full nodes
- announces a library that allows trusted delegation of script evaluation
- summarizes changes to services/client software
- Optech Newsletter #368 Podcast
https://bitcoinops.org/en/newsletters/2025/08/22/
Anthony Towns posted to the Bitcoin-Dev mailing list the draft of a BIP for how nodes can communicate to their peers the transactions they would attempt to mine in their next block...
https://bitcoinops.org/en/newsletters/2025/08/22/#draft-bip-for-block-template-sharing
Josh Doman posted to Delving Bitcoin about a library he’s written that uses a trusted execution environment (TEE) that will only sign a taproot keypath spend if the transaction containing that spend satisfies a script...
https://bitcoinops.org/en/newsletters/2025/08/22/#trusted-delegation-of-script-evaluation
Changes to services and client software:
- ZEUS v0.11.3 released
- Rust Utreexo resources
- Peer-observer tooling and call to action
- Bitcoin Core Kernel-based node announced
- SimplicityHL released
- LSP plugin for BTCPay Server
- Proto mining hardware and software announced
- Oracle resolution demo using CSFS
- Relai adds taproot support
https://bitcoinops.org/en/newsletters/2025/08/22/#changes-to-services-and-client-software
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!
Bitcoin Optech Newsletter #367 is here:
- LND v0.19.3-beta.rc1
- Bitcoin Core 29.1rc1
- Optech Newsletter #367 Podcast
https://bitcoinops.org/en/newsletters/2025/08/15/
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 16:30 UTC. Join us to discuss or ask questions!
David Gumberg, Lauren Shareshian, Jameson Lopp, Steven Roose, and Tim Ruffing joined Optech to discuss Newsletter #365:
- Compact block prefilling
- Mempool-based fee estimation
- Migration from quantum-vulnerable outputs
- The OP_TEMPLATEHASH proposal
- Proposal to allow longer relative timelocks
- Security against quantum computers with taproot as a commitment scheme
- And more
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/08/05/
Spotify:
https://open.spotify.com/episode/65CJxx41a9UYQhCvHDrXWX
Apple Podcasts:
Matt Morehouse and Jesse Posner (@jesseposner) joined Optech to discuss Newsletter #364:
News
0:53 LND gossip filter DoS vulnerability
15:16 Chain code withholding for multisig scripts
38:46 Research indicates common Bitcoin primitives are compatible with quantum-resistant signature algorithms
Selected Q&A from Bitcoin Stack Exchange
57:36 How does Bitcoin Core handle reorgs larger than 10 blocks?
1:01:29 Advantages of a signing device over an encrypted drive?
1:03:21 Spending a taproot output through the keypath and scriptpath?
Releases and release candidates
1:04:26 Libsecp256k1 v0.7.0
Notable code and documentation changes
1:05:16 Bitcoin Core #32521
1:15:00 Bitcoin Core #31829
1:19:51 LDK #3801
1:21:11 LDK #3842
1:21:57 BIPs #1890
1:23:53 BOLTs #1232 https://blossom.primal.net/4c846fc1e4ad14a94b7dea486210f63fc22c3329c5ea1219e175177cf104d6bb.mp4
You can listen on our website:
https://bitcoinops.org/en/podcast/2025/07/29/
Fountain:
https://fountain.fm/episode/tQ7DBX3FTiiAzp6Sp0aD
Spotify:
https://open.spotify.com/episode/6nQ1pe8K4UAizGYslBD6HX
Apple Podcasts:
Matt Morehouse and Jesse Posner (@jesseposner) joined Optech to discuss Newsletter #364:
News
0:53 LND gossip filter DoS vulnerability
15:16 Chain code withholding for multisig scripts
38:46 Research indicates common Bitcoin primitives are compatible with quantum-resistant signature algorithms
Selected Q&A from Bitcoin Stack Exchange
57:36 How does Bitcoin Core handle reorgs larger than 10 blocks?
1:01:29 Advantages of a signing device over an encrypted drive?
1:03:21 Spending a taproot output through the keypath and scriptpath?
Releases and release candidates
1:04:26 Libsecp256k1 v0.7.0
Notable code and documentation changes
1:05:16 Bitcoin Core #32521
1:15:00 Bitcoin Core #31829
1:19:51 LDK #3801
1:21:11 LDK #3842
1:21:57 BIPs #1890
1:23:53 BOLTs #1232 https://blossom.primal.net/4c846fc1e4ad14a94b7dea486210f63fc22c3329c5ea1219e175177cf104d6bb.mp4
Bitcoin Optech newsletter #347 is here:
- describes upfront and hold fees in LN based on burnable outputs
- summarizes discussion about testnets 3 and 4
- announces a plan to relay certain transactions containing taproot annexes
- summarizes popular Q&A from Stack Exchange
- Bitcoin Core 29.0rc2
- Optech Newsletter #347 Recap
https://bitcoinops.org/en/newsletters/2025/03/28/
John Law posted to Delving Bitcoin the summary of a paper he’s written about a protocol nodes can use to charge two additional types of fees for forwarding payments...
https://bitcoinops.org/en/newsletters/2025/03/28/#ln-upfront-and-hold-fees-using-burnable-outputs
Sjors Provoost posted to the Bitcoin-Dev mailing list to ask whether anyone was still using testnet3 now that testnet4 has been available for about six months...
https://bitcoinops.org/en/newsletters/2025/03/28/#discussion-of-testnets-3-and-4
Peter Todd announced to the Bitcoin-Dev mailing list his plan to update his Bitcoin Core-based node, Libre Relay, to begin relaying transactions containing taproot annexes if they follow particular rules...
https://bitcoinops.org/en/newsletters/2025/03/28/#plan-to-relay-certain-taproot-annexes
Selected Q&A from Bitcoin Stack Exchange:
- Why is the witness commitment optional?
- Can all consensus valid 64 byte transactions be (third party) malleated to change their size?
- How long does it take for a transaction to propagate through the network?
- Utility of longterm fee estimation
- Why are two anchor outputs are used in the LN?
- Why are there no BIPs in the 2xx range?
- Why doesn’t Bech32 use the character “b”?
- Bech32 error detection and correction reference implementation
- How to safely spend/burn dust?
- How is the refund transaction in Asymmetric Revocable Commitments constructed?
- Which applications use ZMQ with Bitcoin Core?
https://bitcoinops.org/en/newsletters/2025/03/28/#selected-qa-from-bitcoin-stack-exchange
Bitcoin Core 29.0rc2 is a release candidate for the next major version of the network’s predominate full node. Please see the version 29 testing guide.
https://github.com/bitcoin-core/bitcoin-devwiki/wiki/29.0-Release-Candidate-Testing-Guide
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Bitcoin Optech newsletter #345 is here:
- looks at an analysis of P2P traffic experienced by a typical full node
- summarizes research into LN pathfinding
- describes a new approach for creating probabilistic payments
- recaps the "Stricter internal handling of invalid blocks " PR Review Meeting
- Optech Newsletter #345 Recap on Riverside
https://bitcoinops.org/en/newsletters/2025/03/14/
Developer Virtu posted to Delving Bitcoin an analysis of the network traffic generated and received by his node in four different modes: initial block download (IBD), non-listening (outbound connections only), non-archival (pruned) listening, and archival listening...
https://bitcoinops.org/en/newsletters/2025/03/14/#p2p-traffic-analysis
Sindura Saraswathi posted to Delving Bitcoin about research she conducted with Christian Kümmerle about finding optimal paths between LN nodes for sending payments in a single part...
https://bitcoinops.org/en/newsletters/2025/03/14/#research-into-single-path-ln-pathfinding
Robin Linus replied to the Delving Bitcoin thread about probabilistic payments with a conceptually simple script that allows two parties to each commit to an arbitrary amount of entropy that can later be revealed and xored together, to produce a value that can be used to determine which one of them receives a payment...
'Stricter internal handling of invalid blocks' is a PR by mzumsande that improves the correctness of two non-consensus-critical and expensive-to-calculate validation fields by immediately updating them when a block is marked as invalid...
https://bitcoinops.org/en/newsletters/2025/03/14/#bitcoin-core-pr-review-club
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Bitcoin Optech newsletter #344 is here:
- announces the disclosure of a vulnerability affecting old versions of LND
- summarizes a discussion about the Bitcoin Core Project’s priorities
- Changing consensus covering: Bitcoin Forking Guide, BIP360 pay-to-quantum-resistant-hash (P2QRH) updates, and Private block template marketplace to prevent centralizing MEV
- Optech Newsletter #344 Recap on Riverside
https://bitcoinops.org/en/newsletters/2025/03/07/
Matt Morehouse posted to Delving Bitcoin to announce the responsible disclosure of a vulnerability that affected LND versions before 0.18...
Several blog posts by Antoine Poinsot about the future of the Bitcoin Core project were linked in a thread on Delving Bitcoin...
https://bitcoinops.org/en/newsletters/2025/03/07/#discussion-about-bitcoin-core-s-priorities
Anthony Towns announced to Delving Bitcoin a guide to how to build community consensus for changes to Bitcoin’s consensus rules...
https://bitcoinops.org/en/newsletters/2025/03/07/#bitcoin-forking-guide
Developer Hunter Beast posted an update on his research into quantum resistance for BIP360 to the Bitcoin-Dev mailing list...
Matt Corallo and developer 7d5x9 posted to Delving Bitcoin about allowing parties to bid in public markets for selected space within miner block templates...
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Last week Bastien Teinturier Joost Jager joined nostr:nprofile1qyxhwumn8ghj7cnjvghxjme0qyt8wumn8ghj7etyv4hzumn0wd68ytnvv9hxgtcqyzqnlnjvfem0rea5735hhugrp2g0rg9hs0cc05efsq9ymkrf07t4jt0cvw0 and nostr:nprofile1qy2hwumn8ghj7etyv4hzumn0wd68ytnvv9hxgqghwaehxw309anxjmr5v4ezumn0wd68ytnhd9hx2qpqzsu6h4pfsyt9atxv6prt64j645vlyv22jwkeh5y6mqlrxs47ex0slxtz3n for #342:
- settling channels w/o extra UTXOs
- LN QoS flag
- Ark SDK, Zaprite, Iris, Sparrow, Scure, py and rust bitcoinkernel libs, cbip32, Loop MuSig2
Catch up:
Bitcoin Optech newsletter #343 is here:
- summarizes a post about having full nodes ignore transactions that are relayed without being requested first
- summarizes popular Q&A from Stack Exchange
- Optech Newsletter #343 Recap on Riverside
https://bitcoinops.org/en/newsletters/2025/02/28/
Antoine Riard posted to Bitcoin-Dev two draft BIPs that would allow a node to signal that it will no longer accept tx messages that it had not requested using an inv message, called unsolicited transactions...
https://bitcoinops.org/en/newsletters/2025/02/28/#ignoring-unsolicited-transactions
Selected Q&A from Bitcoin Stack Exchange:
- What’s the rationale for how the loadtxsoutset RPC is set up?
- Are there pinning attacks that RBF rule #3 makes impossible?
- Unexpected locktime values
- Why is it necessary to reveal a bit in a script path spend and check that it matches the parity of the Y coordinate of Q?
- Why does Bitcoin Core use checkpoints??
- How does Bitcoin Core handle long reorgs?
- What is discard feerate?
- Policy to miniscript compiler
https://bitcoinops.org/en/newsletters/2025/02/28/#selected-qa-from-bitcoin-stack-exchange
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Earlier today nostr:nprofile1qqsf2ds69dp2ympzhtpmdd46f3w2cnfkjphtpnaesf5xs8z95vqu2xqytd0r5 and nostr:nprofile1qy2hwumn8ghj7etyv4hzumn0wd68ytnvv9hxgqghwaehxw309anxjmr5v4ezumn0wd68ytnhd9hx2qpqzsu6h4pfsyt9atxv6prt64j645vlyv22jwkeh5y6mqlrxs47ex0slxtz3n discussed Bitcoin Optech Newsletter #341:
- probabilistic payments
- ephemeral anchors
- Bitcoin network monitoring and orphan evictions
- BIP3
- cluster mempool
... and more!
Catch up:
Bitcoin Optech newsletter #341 is here:
- summarizes continued discussion about probabilistic payments
- describes additional opinions about ephemeral anchor scripts for LN
- relays statistics about evictions from the Bitcoin Core orphan pool
- announces an updated draft for a revised BIP process
- recaps the "Cluster mempool: introduce TxGraph" PR Review Meeting
- adds a Probabilistic payments topic
- Optech Newsletter #339 Recap on Riverside
https://bitcoinops.org/en/newsletters/2025/02/14/
Following Oleksandr Kurbatov’s post to Delving Bitcoin last week about emulating an OP_RAND opcode (see Newsletter #340), several discussions were started...
Matt Morehouse replied to the thread about what ephemeral anchor script LN should use for future channels (see Newsletter #340). He expressed concerns about third-party fee griefing of transactions with P2A outputs...
Developer 0xB10C posted to Delving Bitcoin with statistics about the number of transactions evicted from the orphan pools for his nodes...
Mark “Murch” Erhardt posted to the Bitcoin-Dev mailing list to announce that his draft BIP for a revised BIP process has been assigned the identifier BIP3 and is ready for additional review—possibly its last round of review before being merged and activated...
'Cluster mempool: introduce TxGraph' is a PR by sipa that introduces the TxGraph class, which encapsulates knowledge about the (effective) fees, sizes, and dependencies between all mempool transactions, but nothing else. It is part of the cluster mempool project and brings a comprehensive interface that allows interaction with the mempool graph through mutation, inspector, and staging functions...
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Bitcoin Optech newsletter #340 is here:
- announces a fixed vulnerability affecting LDK
- summarizes discussion about zero-knowledge gossip for LN channel announcements
- describes the discovery of previous research that can be applied to finding optimal cluster linearizations
- provides an update on the development of the Erlay protocol for reducing transaction relay bandwidth
- looks at tradeoffs between different scripts for implementing LN ephemeral anchors
- relays a proposal for emulating an OP_RAND opcode in a privacy-preserving manner with no consensus changes required
- points to renewed discussion about lowering the minimum transaction feerate
- Optech Newsletter #340 Recap on Riverside
https://bitcoinops.org/en/newsletters/2025/02/07/
Matt Morehouse posted to Delving Bitcoin to announce a vulnerability affecting LDK that he responsibly disclosed and which was fixed in LDK version 0.1.1...
https://bitcoinops.org/en/newsletters/2025/02/07/#channel-force-closure-vulnerability-in-ldk
Johan Halseth posted to Delving Bitcoin with an extension to the proposed 1.75 channel announcement protocol that would allow other nodes to verify that a channel was backed by a funding transaction, preventing multiple cheap DoS attacks, but without revealing which UTXO is the funding transaction—enhancing privacy...
https://bitcoinops.org/en/newsletters/2025/02/07/#zero-knowledge-gossip-for-ln-channel-announcements
Stefan Richter posted to Delving Bitcoin about a research paper from 1989 he found that has a proven algorithm that can be used to efficiently find the highest-feerate subset of a group of transactions that will be topologically valid if the subset is included in a block...
Sergi Delgado made several posts to Delving Bitcoin about his work over the past year implementing Erlay for Bitcoin Core...
https://bitcoinops.org/en/newsletters/2025/02/07/#erlay-update
Bastien Teinturier posted to Delving Bitcoin to ask for opinions about what ephemeral anchor script should be used as one of the outputs to TRUC-based LN commitment transactions as a replacement for existing anchor outputs...
https://bitcoinops.org/en/newsletters/2025/02/07/#tradeoffs-in-ln-ephemeral-anchor-scripts
Oleksandr Kurbatov posted to Delving Bitcoin about an interactive protocol that allows two parties to make a contract that will pay out in a way that neither can predict, which is functionally equivalent to randomly...
https://bitcoinops.org/en/newsletters/2025/02/07/#emulating-op-rand
Greg Tonoski posted to the Bitcoin-Dev mailing list about lowering the default minimum transaction relay feerate...
Antoine Poinsot made several posts to the Delving Bitcoin thread about the consensus cleanup soft fork suggesting parameter changes...
https://bitcoinops.org/en/newsletters/2025/02/07/#updates-to-cleanup-soft-fork-proposal
Bob McElrath posted to Delving Bitcoin requesting developers working on covenant designs to consider how their favorite proposal, or a new proposal, could assist in the creation of an efficient decentralized mining pool...
https://bitcoinops.org/en/newsletters/2025/02/07/#request-for-a-covenant-design-supporting-braidpool
A thread from April 2024 received renewed attention this past month. Previously, Bob McElrath posted about having miners commit to the transactions in their mempool and then only allowing them to include transactions in their blocks that were deterministically selected from previous commitments...
Developer Zawy posted to Delving Bitcoin about a mining difficulty adjustment algorithm (DAA) for a directed acyclic graph (DAG) type blockchain...
Difficulty adjustment algorithms
Difficulty adjustment algorithms (DAAs) are the methods by which mining difficulty is regulated, which affects the average time between blocks, the total amount of block space, and the rate of distribution of new bitcoins (the block subsidy)...
https://bitcoinops.org/en/topics/difficulty-adjustment-algorithms/
Bitcoin Optech will host an audio recap discussion of this newsletter with special guests Matt Morehouse, Bastien Teinturier, Bob McElrath, and Antoine Poinsot on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Bitcoin Optech newsletter #338 is here:
- announces a draft BIP for referencing unspendable keys in descriptors
- examines how implementations are using PSBTv2
- corrects in depth our description last week of a new offchain DLC protocol
- summarizes changes to services/client software
- Optech Newsletter #338 Recap on Riverside
https://bitcoinops.org/en/newsletters/2025/01/24/
Andrew Toth posted to Delving Bitcoin and the Bitcoin-Dev mailing list a draft BIP for referencing provably unspendable keys in descriptors...
https://bitcoinops.org/en/newsletters/2025/01/24/#draft-bip-for-unspendable-keys-in-descriptors
Sjors Provoost posted to the Bitcoin-Dev mailing list to ask about software that had implemented support for version 2 PSBTs in order to help test a PR adding support for it to Bitcoin Core...
https://bitcoinops.org/en/newsletters/2025/01/24/#psbtv2-integration-testing
In our description of offchain DLCs in last week’s newsletter, we confused the new scheme proposed by developer conduition with previously published and implemented offchain DLC schemes. There’s a significant and interesting difference...
https://bitcoinops.org/en/newsletters/2025/01/24/#correction-about-offchain-dlcs
Changes to services and client software:
- Bull Bitcoin Mobile Wallet adds payjoin
- Bitcoin Keeper adds miniscript support
- Nunchuk adds taproot MuSig2 features
- Jade Plus signing device announced
- Coinswap v0.1.0 released
- Bitcoin Safe 1.0.0 released
- Bitcoin Core 28.0 policy demonstration
- Rust-payjoin 0.21.0 released
- PeerSwap v4.0rc1
- Joinpool prototype using CTV
- Rust joinstr library announced
- Strata bridge announced
https://bitcoinops.org/en/newsletters/2025/01/24/#changes-to-services-and-client-software
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Earlier today nostr:nprofile1qqsf2ds69dp2ympzhtpmdd46f3w2cnfkjphtpnaesf5xs8z95vqu2xqytd0r5 and nostr:nprofile1qy2hwumn8ghj7etyv4hzumn0wd68ytnvv9hxgqghwaehxw309anxjmr5v4ezumn0wd68ytnhd9hx2qgdwaehxw309ahx7uewd3hkcqgswaehxw309ahx7um5wghxcctwvsq3gamnwvaz7tmwdaehgu3wdau8gu3wv3jhvqgswaehxw309ahx7um5wgh8w6twv5q3yamnwvaz7tm0venxx6rpd9hzuur4vgq3gamnwvaz7tmjv4kxz7fwv3sk6atn9e5k7qgcwaehxw309aex2mrp0yhxummnwa5x2un99e3k7mgprpmhxue69uhhyetvv9ujuumwdae8gtnnda3kjctvqyv8wumn8ghj7am9d33k7mt99ehx7um5wgh8w6twv5qzq9pe402znqgkt6kve5zxh4t94tge7gc54yadn0gf4kp7xdptajvlsax9le were joined by nostr:nprofile1qy2hwumn8ghj7erfw36x7tnsw43z7un9d3shjqgwwaehxw309ahx7uewd3hkctcpr4mhxue69uhkummnw3ezucnfw33k76twv4ezuum0vd5kzmp0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qgewaehxw309aex2mrp0yh8xmn0wf6zuum0vd5kzmp0qqsdxpfv503a2ga3ajqxw843hws9z7302ghpj4mcmjpa6qagmp9pwrsh5mthn to discuss Newsletter #337:
- Continued discussion about rewarding pool miners with tradeable ecash shares
- LDK v0.1
and more
Catch up:
Bitcoin Optech newsletter #337 is here:
- summarizes continued discussion about rewarding pool miners with tradeable ecash shares
- describes a new proposal for enabling offchain resolution of DLCs
- Optech Newsletter #337 Recap on Riverside
https://bitcoinops.org/en/newsletters/2025/01/17/
Discussion continued since our previous summary of a Delving Bitcoin thread about paying pool miners with ecash for each share they submitted...
Developer conduition posted to the DLC-dev mailing list about a contract protocol that allows an offchain spend of the funding transaction signed by both parties to create multiple DLCs...
https://bitcoinops.org/en/newsletters/2025/01/17/#offchain-dlcs
Bitcoin Optech will host an audio recap discussion of this newsletter on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Yesterday nostr: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 and nostr:nprofile1qy2hwumn8ghj7etyv4hzumn0wd68ytnvv9hxgqghwaehxw309anxjmr5v4ezumn0wd68ytnhd9hx2qgdwaehxw309ahx7uewd3hkcqgswaehxw309ahx7um5wghxcctwvsq3gamnwvaz7tmwdaehgu3wdau8gu3wv3jhvqgswaehxw309ahx7um5wgh8w6twv5q3yamnwvaz7tm0venxx6rpd9hzuur4vgq3gamnwvaz7tmjv4kxz7fwv3sk6atn9e5k7qgcwaehxw309aex2mrp0yhxummnwa5x2un99e3k7mgprpmhxue69uhhyetvv9ujuumwdae8gtnnda3kjctvqyv8wumn8ghj7am9d33k7mt99ehx7um5wgh8w6twv5qzq9pe402znqgkt6kve5zxh4t94tge7gc54yadn0gf4kp7xdptajvlsax9le were joined by Yuval Kogman, Jeremy Rubin, and Steve Myers to discuss Newsletter #335:
- Attacks on centralized coinjoin
- ChillDKG
- Changing consensus
- BDK 1.0.0
Catch up:
Bitcoin Optech newsletter #334: 2024 Year-in-Review Special is here:
- notes Bitcoin developments during each month of 2024
- feature: Vulnerability disclosures
- feature: Cluster mempool
- feature: P2P transaction relay
- feature: Covenants and script upgrades
- feature: Major releases of popular infrastructure projects
- feature: Optech
https://bitcoinops.org/en/newsletters/2024/12/20/
In 2024, Optech summarized more than two dozen vulnerability disclosures...
https://bitcoinops.org/en/newsletters/2024/12/20/#vulnreports
An idea for a mempool redesign from 2023 became a particular focus for several Bitcoin Core developers throughout 2024...
https://bitcoinops.org/en/newsletters/2024/12/20/#cluster
Fee management has always been a challenge in the decentralized Bitcoin protocol, but widespread use of contract protocols such as LN-Penalty and ongoing research into newer and more complex protocols has made it more important than ever to ensure users can pay and increase fees on demand. Bitcoin Core contributors have been working on this problem for years, and 2024 saw the public release of several new features that significantly improve the situation...
https://bitcoinops.org/en/newsletters/2024/12/20/#p2prelay
Several developers devoted much of their time in 2024 towards advancing proposals for covenants, scripting upgrades, and other changes that would support advanced contract protocols such as joinpools and channel factories...
https://bitcoinops.org/en/newsletters/2024/12/20/#covs
Optech covered major releases of popular infrastructure projects throughout the year...
https://bitcoinops.org/en/newsletters/2024/12/20/#releases
In Optech’s seventh year, we published:
- 51 newsletters
- 35 new topic pages
- over 120,000 words, a 350pg book equivalent
- a wallet guide for developers
- over 59hr of podcasts, with 488,000 words of transcripts w/75 guests
- 200+ non-English translations
https://bitcoinops.org/en/newsletters/2024/12/20/#optech
Bitcoin Optech will host an audio recap discussion of this special newsletter with special guests Dave Harding, Niklas Gögge, Gloria Zhao, and Brandon Black on Riverside.fm Monday at 15:30 UTC. Join us to discuss or ask questions!
Bitcoin Optech newsletter #333 is here:
- describes a vulnerability that allowed stealing from old versions of various LN implementations
- announces a deanonymization vulnerability affecting Wasabi and related software
- summarizes a post and discussion about LN channel depletion
- links to a poll for opinions about selected covenant proposals
- describes two types of incentive-based pseudo-covenants
- references summaries of the periodic in-person Bitcoin Core developer meeting
- recaps the "Track and use all potential peers for orphan resolution" PR Review Meeting
- summarizes changes to services/client software
- summarizes popular Q&A from Stack Exchange
- Optech Newsletter #333 Recap on Riverside
https://bitcoinops.org/en/newsletters/2024/12/13/
David Harding announced to Delving Bitcoin a vulnerability he had responsibly disclosed earlier in the year. Old versions of Eclair, LDK, and LND with default settings allowed the party who opened a channel to steal up to 98% of channel value...
A developer of GingerWallet disclosed a method a coinjoin coordinator could use to prevent users from gaining any privacy during a coinjoin...
René Pickhardt posted to Delving Bitcoin and participated, along with Christian Decker, in an Optech Deep Dive about his research into the mathematical foundations of payment channel networks...
https://bitcoinops.org/en/newsletters/2024/12/13/#insights-into-channel-depletion
/dev/fd0 posted to the Bitcoin-Dev mailing list a link to a public poll of developer opinions about selected covenant proposals...
https://bitcoinops.org/en/newsletters/2024/12/13/#poll-of-opinions-about-covenant-proposals
Jeremy Rubin posted to the Bitcoin-Dev mailing list a link to a paper he authored about oracle-assisted covenants. The model involves two oracles: a covenant oracle and an integrity oracle...
https://bitcoinops.org/en/newsletters/2024/12/13/#incentive-based-pseudo-covenants
Many Bitcoin Core developers met in person in October, and several notes from the meeting have now been published...
https://bitcoinops.org/en/newsletters/2024/12/13/#bitcoin-core-developer-meeting-summaries
'Track and use all potential peers for orphan resolution' is a PR by glozow that improves the reliability of orphan resolution by letting the node request missing ancestors from all peers instead of just the one that announced the orphan...
https://bitcoinops.org/en/newsletters/2024/12/13/#bitcoin-core-pr-review-club
Changes to services and client software:
- Java-based HWI released
- Saving Satoshi Bitcoin development education game announced
- Neovim Bitcoin Script plugin
- Proton Wallet adds RBF
https://bitcoinops.org/en/newsletters/2024/12/13/#changes-to-services-and-client-software
Selected Q&A from Bitcoin Stack Exchange:
- How long does Bitcoin Core store forked chains?
- What is the point of solo mining pools?
- Is there a point to using P2TR over P2WSH if I only want to use the script path?
https://bitcoinops.org/en/newsletters/2024/12/13/#selected-qa-from-bitcoin-stack-exchange
Bitcoin Optech will host an audio recap discussion of this newsletter with special guests Dave Harding and /dev/fd0 on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Bitcoin Optech newsletter #332 is here:
- announces the disclosure of a transaction censorship vulnerability
- summarizes discussion about the consensus cleanup soft fork proposal
- Optech Newsletter #332 Recap on Riverside
https://bitcoinops.org/en/newsletters/2024/12/06/
Antoine Riard posted to the Bitcoin-Dev mailing list about a method for preventing a node from broadcasting a transaction belonging to a connected wallet...
https://bitcoinops.org/en/newsletters/2024/12/06/#transaction-censorship-vulnerability
Antoine Poinsot posted to the existing Delving Bitcoin thread about the consensus cleanup soft fork proposal. In addition to the already proposed fix for the classic time warp vulnerability, he proposed also including a fix for the recently discovered Zawy-Murch time warp...
Bitcoin Optech will host an audio recap discussion of this newsletter with special guest Antoine Poinsot on Riverside.fm Tuesday at 15:30 UTC. Join us to discuss or ask questions!
Bitcoin Optech newsletter #331 is here:
- summarizes several recent discussions about a Lisp dialect for Bitcoin scripting
- adds a Basic Bitcoin Lisp Language topic
- summarizes popular Q&A from Stack Exchange
- Optech Newsletter #331 Recap on Riverside
https://bitcoinops.org/en/newsletters/2024/11/29/
Anthony Towns made several posts about a continuation of his work on creating a Lisp dialect for Bitcoin that could be added to Bitcoin in a soft fork...
https://bitcoinops.org/en/newsletters/2024/11/29/#lisp-dialect-for-bitcoin-scripting
Basic Bitcoin Lisp language (bll) is a proposed scripting language that could be added to Bitcoin in a soft fork...
https://bitcoinops.org/en/topics/basic-bitcoin-lisp-language/
Selected Q&A from Bitcoin Stack Exchange:
- How does ColliderScript improve Bitcoin?
- Why do standardness rules limit tx weight?
- Is the scriptSig spending a P2A output expected to be empty?
- What happens to the unused P2As?
- Why doesn’t Bitcoin’s PoW algorithm use a chain of hashes?
- Clarification on false value in Script
- What is this micro tx?
- Are there any UTXOs that cant be spent?
- Why wasnt BIP34 implemented in the coinbase tx’s locktime or nSequence?
https://bitcoinops.org/en/newsletters/2024/11/29/#selected-qa-from-bitcoin-stack-exchange
Bitcoin Optech will host an audio recap discussion of this newsletter with special guest AJ Towns on Riverside.fm Tuesday at 20:30 UTC. Join us to discuss or ask questions!
We needed to move this discussion with AJ Towns to 14:30 UTC today.
Hope to see you there!
Bitcoin Optech newsletter #330 is here:
- summarizes a proposed change to the LN spec to allow pluggable channel factories
- links to a report and a new website for examining transactions on the default signet that use proposed soft forks
- describes an update to the LNHANCE multi-part soft fork proposal
- discusses a paper about covenants based on grinding rather than consensus changes
- summarizes changes to services/client software
- #330 Recap on Twitter Spaces
https://bitcoinops.org/en/newsletters/2024/11/22/
ZmnSCPxj posted to Delving Bitcoin a proposal to make a small set of changes to the BOLT specification to allow existing LN software to manage LN-Penalty payment channels within a channel factory using a software plugin...
https://bitcoinops.org/en/newsletters/2024/11/22/#pluggable-channel-factories
Anthony Towns posted to Delving Bitcoin a summary of activity on the default signet related to proposed soft forks available through Bitcoin Inquisition...
https://bitcoinops.org/en/newsletters/2024/11/22/#signet-activity-report
Moonsettler posted to Delving Bitcoin and also the Bitcoin-Dev mailing list a proposal for a new opcode, OP_PAIRCOMMIT, to be added to the LNHANCE soft fork proposal...
https://bitcoinops.org/en/newsletters/2024/11/22/#update-to-lnhance-proposal
Ethan Heilman posted to the Bitcoin-Dev mailing list the summary of a paper he coauthored with Victor Kolobov, Avihu Levy, and Andrew Poelstra. The paper describes how covenants can be created easily without consensus changes...
Changes to services and client software:
- Spark layer two protocol announced
- Unify wallet announced
- bitcoinutils.dev launches
- Great Restored Script Interpreter available
https://bitcoinops.org/en/newsletters/2024/11/22/#changes-to-services-and-client-software
Bitcoin Optech will host an audio recap discussion of this newsletter with special guests Vojtěch Strnad, Moonsettler, Brandon Black, Ethan Heilman, and Dusty Daemon on Twitter Spaces Tuesday at 15:30 UTC. Join us to discuss or ask questions!