Mark “Murch” Erhardt and Mike Schmidt are joined by Sindura Saraswathi, Christian Kümmerle, and Stéphan Vuylsteke to discuss Newsletter #345. News ● P2P traffic analysis (1:35) ● Research into single-path LN pathfinding (6:45) ● Probabilistic payments using different hash functions as an xor function (21:17) Bitcoin Core PR Review Club ● Stricter i…

Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Morehouse, Matt Corallo, and Hunter Beast to discuss Newsletter #344. News ● Disclosure of fixed LND vulnerability allowing theft (0:57) ● Discussion about Bitcoin Core's priorities (10:49) Changing consensus ● Bitcoin Forking Guide (1:01:11) ● Update on BIP360 pay-to-quantum-resistant-hash (…

Dave Harding and Mike Schmidt discuss Newsletter #343.

Dave Harding and Mike Schmidt are joined by Bastien Teinturier and Joost Jager discuss ⁠Newsletter #342⁠. News ● Allowing mobile wallets to settle channels without extra UTXOs (0:59) ● Continued discussion about an LN quality of service flag (13:14) Changes to services and client software ● Ark Wallet SDK released (40:28) ● Zaprite adds BTCPay Serv…

Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #341. News ● Continued discussion about probabilistic payments (0:34) ● Continued discussion about ephemeral anchor scripts for LN (7:26) ● Stats on orphan evictions (14:31) ● Updated proposal for updated BIP process (27:08) Bitcoin Core PR Review Club ● Cluster mempool: introduce TxGraph (35…

Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Morehouse, Johan Halseth, Pieter Wuille, Sergi Delgado, Bastien Teinturier, Oleksandr Kurbatov, Antoine Poinsot and Bob McElrath to discuss Newsletter #340. News ● Channel force closure vulnerability in LDK (2:14) ● Zero-knowledge gossip for LN channel announcements (16:01) ● Discovery of pre…

Mark “Murch” Erhardt and Dave Harding are joined by Matt Morehouse and 0xB10C to discuss Newsletter #339. News ● Vulnerability in LDK claim processing (0:47) ● Replacement cycling attacks with miner exploitation (17:28) ● Updated stats on compact block reconstruction (23:56) Selected Q&A from Bitcoin Stack Exchange ● Who uses or wants to use PSBTv2…

Mark “Murch” Erhardt and Mike Schmidt are joined by Andrew Toth and Dave Harding to discuss ⁠Newsletter #338⁠. News- Draft BIP for unspendable keys in descriptors (0:49) - PSBTv2 integration testing (9:55) - Correction about offchain DLCs (15:25) Changes to services and client software - Bull Bitcoin Mobile Wallet adds payjoin (28:10) - Bitcoin Kee…

Mark “Murch” Erhardt and Mike Schmidt are joined by vnprc to discuss ⁠⁠Newsletter #337⁠⁠. News - Continued discussion about rewarding pool miners with tradeable ecash shares (0:35) - Offchain DLCs (38:32) Releases and release candidates - LDK v0.1 (39:34) Notable code and documentation changes - Eclair #2936 (41:32) - Rust Bitcoin #3792 (42:46) - B…

Mark “Murch” Erhardt and Mike Schmidt are joined by Abubakar Sadiq Ismail, Gregory Sanders, and Daniel Roberts to discuss ⁠Newsletter #336⁠. News Investigating mining pool behavior before fixing a Bitcoin Core bug (1:07) Contract-level relative timelocks (15:04) Multiparty LN-Symmetry variant with penalties for limiting published updates (29:06) Re…

Dave Harding and Mike Schmidt are joined by Yuval Kogman, Jeremy Rubin, and Steve Myers to discuss ⁠Newsletter #335⁠. News Deanonymization attacks against centralized coinjoin (1:39) Updated ChillDKG draft (14:09) Changing consensus CTV enhancement opcodes (18:41) Adjusting difficulty beyond 256 bits (31:52) Transitory soft forks for cleanup soft f…

Mark “Murch” Erhardt and Mike Schmidt are joined by Dave Harding, Niklas Gögge, Gloria Zhao, and Rearden to discuss ⁠Newsletter #334: 2024 Year-in-Review Special⁠. January Fee-dependent timelocks (16:18) Optimized contract protocol exits (17:20) LN-Symmetry proof-of-concept implementation (18:22) February Replace by feerate (22:32) Human-readable p…

Mark “Murch” Erhardt and Mike Schmidt are joined by Dave Harding, /dev/fd0, and Gloria Zhao to discuss Newsletter #333. News Vulnerability allowing theft from LN channels with miner assistance (1:11) Deanonymization vulnerability affecting Wasabi and related software (12:00) Insights into channel depletion (18:12) Poll of opinions about covenant pr…

Dave Harding and Mike Schmidt are joined by René Pickhardt and Christian Decker to discuss Pickhardt’s ⁠Lightning Network channel depletion research⁠. Summary of Pickhardt's research (1:01) Why look at wealth distributions? (5:45) What can be learned from depletion? (11:38) Circular rebalancing (13:33) What determines where the spanning tree is? (1…

Mark “Murch” Erhardt and Mike Schmidt are joined by Antoine Riard and Antoine Poinsot to discuss ⁠Newsletter #332⁠. News Transaction censorship vulnerability (0:55) Continued discussion about consensus cleanup soft fork proposal (19:20) Releases and release candidates Eclair v0.11.0 (46:45) LDK v0.0.125 (47:26) Core Lightning 24.11rc3 (47:59) LND 0…

Mark “Murch” Erhardt and Mike Schmidt are joined by Anthony Towns to discuss ⁠Newsletter #331⁠. News Lisp dialect for Bitcoin scripting (0:48) Selected Q&A from Bitcoin Stack Exchange How does ColliderScript improve Bitcoin and what features does it enable? (43:24) Why do standardness rules limit transaction weight? (48:10) Is the scriptSig spendin…

Mark “Murch” Erhardt and Mike Schmidt are joined by ZmnSCPxj, Vojtěch Strnad, Moonsettler, Brandon Black, Ethan Heilman, and Dusty Daemon to discuss Newsletter #330.

Mark “Murch” Erhardt discusses Newsletter #329. News MAD-based offchain payment resolution (OPR) protocol (0:21) Papers about IP-layer censorship of LN payments (3:10) Releases and release candidates BTCPay Server 2.0.3 (6:21) Notable code and documentation changes Bitcoin Core #30592 (8:29) Bitcoin Core #30930 (9:46) LDK #3283 (11:35) LND #7762 (1…

Mark “Murch” Erhardt and Gregory Sanders discuss Newsletter #328. News Disclosure of a vulnerability affecting Bitcoin Core versions before 25.1 (0:53) Bitcoin Core PR Review Club Ephemeral Dust (6:54) Releases and release candidates Bitcoin Core 27.2 (14:55) Libsecp256k1 0.6.0 (15:40) Notable code and documentation changes LDK #3360 (17:40) LDK #3…

Mark “Murch” Erhardt and Mike Schmidt are joined by Andrew Toth to discuss ⁠Newsletter #327⁠. News Timeout tree channel factories (0:50) Draft BIP for DLEQ proofs (10:53) Releases and release candidates BTCPay Server 2.0.0 (20:02) Notable code and documentation changes Bitcoin Core #31130 (22:56) LDK #3007 (25:14) BIPs #1676 (27:15)…

Dave Harding and Mike Schmidt are joined by ZmnSCPxj to discuss his SuperScalar proposal. Why a deep dive? (0:40) Proposal overview (1:58) Importance of reallocating liquidity (4:13) What about overloading channels with liquidity from the start? (9:42) Discussion of multi-LSP vs single LSP approaches (13:05) Ensuring unilateral exit is possible (15…

Mark “Murch” Erhardt and Mike Schmidt are joined by Elle Mouton and Andrew Toth to discuss Newsletter #326. News Updates to the version 1.75 channel announcements proposal (1:36) Draft BIP for sending silent payments with PSBTs (16:28) Selected Q&A from Bitcoin Stack Exchange Duplicate blocks in blk*.dat files? (30:07) How was the structure of pay-…

Mark “Murch” Erhardt and Mike Schmidt are joined by Olaoluwa Osuntokun and Steven Roose to discuss ⁠Newsletter #325⁠. News LN Summit 2024 notes (0:51) Changes to services and client software Coinbase adds taproot send support (49:03) Dana wallet released (51:53) Kyoto BIP157/158 light client released (53:20) DLC Markets launches on mainnet (1:01:39…

Mark “Murch” Erhardt and Mike Schmidt are joined by Antoine Poinsot to discuss ⁠Newsletter #324⁠. News Disclosure of vulnerabilities affecting Bitcoin Core versions before 25.0 (1:09) CVE-2024-38365 btcd consensus failure (11:22) Guide for wallets employing Bitcoin Core 28.0 (23:27) Bitcoin Core PR Review Club Add getorphantxs (27:43) Releases and …

Mark “Murch” Erhardt and Mike Schmidt are joined by Bastien Teinturier to discuss ⁠Newsletter #323⁠. News Impending btcd security disclosure (0:54) Releases and release candidates Bitcoin Core 28.0 (3:11) BDK 1.0.0-beta.5 (15:13) Notable code and documentation changes Bitcoin Core #30043 (20:47) Bitcoin Core #30510 (22:15) Core Lightning #7644 (25:…

Jon Atack and Mike Schmidt are joined by Gloria Zhao and Jonas Nick to discuss ⁠Newsletter #322⁠. News Disclosure of vulnerability affecting Bitcoin Core versions before 24.0.1 (2:01) Hybrid jamming mitigation testing and changes (17:51) Shielded client-side validation (CSV) (25:28) Draft of updated BIP process (48:47) Selected Q&A from Bitcoin Sta…

Rijndael and Mike Schmidt are joined by Andy Schroder and Virtu to discuss ⁠Newsletter #321⁠. News Proving UTXO set inclusion in zero knowledge (1:47) LN offline payments (11:32) DNS seeding for non-IP addresses (30:00) Changes to services and client software Strike adds BOLT12 support (42:15) BitBox02 adds silent payment support (43:29) The Mempoo…

Mark “Murch” Erhardt and Mike Schmidt are joined by Bruno Garcia, Shehzan Maredia, Gloria Zhao, Fabian Jahr, and Gregory Sanders to discuss ⁠Newsletter #320⁠. News Mutation testing for Bitcoin Core (1:39) DLC-based loan contract execution (9:15) Bitcoin Core PR Review Club Testing Bitcoin Core 28.0 Release Candidates (21:08) Releases and release ca…

Mark “Murch” Erhardt and Mike Schmidt are joined by Filippo Merli, Lorenzo Bonazzi, Matt Corallo, Eric Voskuil, and rkrux to discuss ⁠Newsletter #319⁠. News Stratum v2 extension for fee revenue sharing (1:49) OP_CAT research fund (17:53) Mitigating merkle tree vulnerabilities (22:43) Releases and release candidates Core Lightning 24.08 (55:21) LDK …

Mark “Murch” Erhardt and Mike Schmidt are joined by Jay Beddict to discuss ⁠Newsletter #318⁠. News New Bitcoin Mining Development mailing list (0:48) Selected Q&A from Bitcoin Stack Exchange Can a BIP152 compact block be sent before validation by a node that doesn't know all transactions? (15:03) Did Segwit (BIP141) eliminate all txid malleability …

Mark “Murch” Erhardt and Mike Schmidt are joined by Bob McElrath and moonsettler to discuss ⁠Newsletter #317⁠. News Simple (but imperfect) anti-exfiltration protocol (0:53) Changes to services and client software Proton Wallet announced (23:33) CPUNet testnet announced (25:38) Lightning.Pub launches (38:52) Taproot Assets v0.4.0-alpha released (39:…

Mark “Murch” Erhardt and Mike Schmidt are joined by Bastien Teinturier and Hennadii Stepanov to discuss Newsletter #316. News New time warp vulnerability in testnet4 (1:05) Onion message DoS risk discussion (14:20) Optional identification and authentication of LN payers (28:04) Bitcoin Core switch to CMake build system (36:15) Releases and release …

Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Corallo, Greg Sanders, Sivaram Dhakshinamoorthy to discuss ⁠Newsletter #315⁠. News Faster seed exfiltration attack (1:24) Block withholding attacks and potential solutions (17:21) Statistics on compact block reconstruction (21:47) Replacement cycle attack against pay-to-anchor (36:23) Propose…

Mark “Murch” Erhardt and Mike Schmidt are joined by Sergi Delgado to discuss ⁠Newsletter #314⁠. News Disclosure of vulnerabilities affecting Bitcoin Core versions before 22.0 (0:56) Optimizing block building with cluster mempool (11:23) Hyperion network event simulator for the Bitcoin P2P network (14:30) Releases and release candidates BDK 1.0.0-be…

Mark “Murch” Erhardt and Mike Schmidt discuss ⁠Newsletter #313⁠. News Varied discussion of free relay and fee bumping upgrades (0:31) Selected Q&A from Bitcoin Stack Exchange Why is restructure of mempool required with cluster mempool? (29:54) DEFAULT_MAX_PEER_CONNECTIONS for Bitcoin Core is 125 or 130? (36:32) Why do protocol developers work on ma…

Mark “Murch” Erhardt and Mike Schmidt are joined by Jonas Nick and Pieter Wuille to discuss ⁠Newsletter #312⁠. News Distributed key generation protocol for FROST (1:37) Introduction to cluster linearization (28:45) Changes to services and client software ZEUS adds BOLT12 offers and BIP353 support (56:15) Phoenix adds BOLT12 offers and BIP353 suppor…

Mark “Murch” Erhardt and Mike Schmidt are joined by Vojtěch Strnad and Fabian Jahr to discuss Newsletter #311. News (1:00) Bitcoin Core PR Review Club Testnet4 including PoW difficulty adjustment fix (15:14) Releases and release candidates Bitcoin Core 26.2 (37:23) LND v0.18.2-beta (37:42) Notable code and documentation changes Rust Bitcoin #2949 (…

Mark “Murch” Erhardt and Mike Schmidt are joined by Antoine Poinsot and Elle Mouton to discuss ⁠Newsletter #310⁠. News Disclosure of vulnerabilities affecting Bitcoin Core versions before 0.21.0 (0:59) Adding a BOLT11 invoice field for blinded paths (22:17) Releases and release candidates Bitcoin Core 26.2rc1 (36:43) Notable code and documentation …

Mark “Murch” Erhardt and Mike Schmidt are joined by René Pickhardt to discuss ⁠Newsletter #309⁠. News Estimating the likelihood that an LN payment is feasible (1:04) Selected Q&A from Bitcoin Stack Exchange How is the progress of Initial Block Download (IBD) calculated? (31:25) What is `progress increase per hour` during synchronization? (33:50) Sh…

Mark “Murch” Erhardt and Mike Schmidt are joined by Jameson Lopp and Valentine Wallace to discuss ⁠Newsletter #308⁠. News Disclosure of vulnerability affecting old versions of LND (0:54) Continued discussion of PSBTs for silent payments (7:32) Changes to services and client software Casa adds descriptor support (10:55) Specter-DIY v1.9.0 released (…

Mark “Murch” Erhardt and Mike Schmidt are joined by Hunter Beast and TheCharlatan to discuss Newsletter #307.

Mark “Murch” Erhardt and Dave Harding are joined by Fabian Jahr, Anthony Towns, and Matt Corallo to discuss Newsletter #306. News Upcoming disclosure of vulnerabilities affecting old versions of Bitcoin Core (1:02) BIP and experimental implementation of testnet4 (10:17) Functional encryption covenants (24:58) Updates to proposed soft fork for 64-bi…

Mark “Murch” Erhardt and Dave Harding are joined by Setor Blagogee, Oghenovo Usiwoma, Pierre Rochard, and Alex Bosworth to discuss Newsletter #305. News Light client protocol for silent payments (1:52) Raw taproot descriptors (14:56) Should overlapping soft fork proposals be considered mutually exclusive? (28:02) Selected Q&A from Bitcoin Stack Exc…

Mark “Murch” Erhardt and Mike Schmidt are joined by Andrew Toth, Antoine Poinsot, and Tony Klausing to discuss ⁠Newsletter #304⁠. News Upgrading existing LN channels (1:27) Challenges in rewarding pool miners (6:58) Spending previously received SP outputs (12:40) Proposed miniscript BIP (21:32) Channel value pegging (31:42) Changes to services and …

Mark “Murch” Erhardt and Mike Schmidt are joined by Adam Gibson to discuss ⁠Newsletter #303⁠. News Anonymous usage tokens (1:58) BIP39 seed phrase splitting (31:48) Alternative to BitVM (38:05) Continued discussion about updating BIP2 (40:41) Releases and release candidates LND v0.18.0-beta.rc2 (44:25) Notable code and documentation changes Core Li…

Mark “Murch” Erhardt and Dave Harding are joined by Calvin Kim to discuss ⁠Newsletter #302⁠. News Release of utreexod beta (0:56) BIP119 extensions for smaller hashes and arbitrary data commitments (20:15) Releases and release candidates LDK v0.0.123 (25:16) LND v0.18.0-beta.rc2 (26:08) Notable code and documentation changes Bitcoin Core #29845 (28…

Mark “Murch” Erhardt and Mike Schmidt are joined by Ethan Heilman and Gloria Zhao to discuss ⁠Newsletter #301⁠. News Consensus-enforced lamport signatures on top of ECDSA signatures (1:00) Bitcoin Core PR Review Club Index TxOrphanage by wtxid, allow entries with same txid (31:04) Releases and release candidates Libsecp256k1 v0.5.0 (51:15) LND v0.1…

Mark “Murch” Erhardt and Mike Schmidt are joined by Tadge Dryja to discuss ⁠Newsletter #300⁠. News CTV-like exploding keys proposal (0:59) Analyzing a contract protocol with Alloy (13:07) Arrests of Bitcoin developers (22:37) CoreDev.tech Berlin event (28:53) Releases and release candidates Bitcoin Inquisition 25.2 (31:35) LND v0.18.0-beta.rc1 (35:…

Mark “Murch” Erhardt and Mike Schmidt are joined by Gregory Sanders to discuss ⁠Newsletter #299⁠. News Weak blocks proof-of-concept implementation (0:56) BIP editors update (20:08) Selected Q&A from Bitcoin Stack Exchange Where exactly is the off-by-one difficulty bug? (26:44) How is P2TR different than P2PKH using opcodes from a developer perspect…

Mark “Murch” Erhardt and Mike Schmidt discuss ⁠Newsletter #298⁠. News What would have happened if cluster mempool had been deployed a year ago? (0:42) Changes to services and client software Phoenix for server announced (19:26) Mercury Layer adds Lightning swaps (21:32) Stratum V2 Reference Implementation v1.0.0 released (22:46) Teleport Transactio…