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…

Dave Harding and Mike Schmidt are joined by Kulpreet Singh, Chris Stewart, Jameson Lopp, and Joost Jager to discuss ⁠Newsletter #297⁠. News DSL for experimenting with contracts (1:24) Updating BIP2 (15:50) Discussion about resetting and modifying testnet (21:00) Bitcoin Core PR Review Club Implement 64 bit arithmetic op codes in the Script interpre…

Mark “Murch” Erhardt and Mike Schmidt are joined by Antoine Poinsot to discuss ⁠Newsletter #296⁠. News Revisiting consensus cleanup (0:46) Choosing new BIP editors (27:21) Releases and release candidates Bitcoin Core 26.1 (37:22) Bitcoin Core 27.0rc1 (39:09) HWI 3.0.0-rc1 (39:40) Notable code and documentation changes Bitcoin Core #27307 (40:59) Bi…

Mark “Murch” Erhardt and Mike Schmidt are joined by Dave Harding, Peter Todd, Abubakar Sadiq Ismail, David Gumberg, and Jeffrey Czyz to discuss Newsletter #295. News Disclosure of free relay attack (1:22) Transaction fee sponsorship improvements (9:55) Mempool-based feerate estimation (34:49) Selected Q&A from Bitcoin Stack Exchange What are the ri…

Mark “Murch” Erhardt and Mike Schmidt are joined by Sebastian Falbesoner, Anthony Towns, and Russell O’Connor to discuss ⁠Newsletter #294⁠. News BIP324 proxy for light clients (1:20) Overview of BTC Lisp (10:44) Changes to services and client software BitGo adds RBF support (38:59) Phoenix Wallet v2.2.0 released (40:11) Bitkey hardware signing devi…

Mark “Murch” Erhardt and Mike Schmidt are joined by ZmnSCPxj, Anthony Towns, and Armin Sabouri to discuss Newsletter #293. News Trustless onchain betting on potential soft forks (1:11) Overview of Chia Lisp for Bitcoiners (14:06) Bitcoin Core PR Review Club Re enable `OP_CAT` (35:48) Releases and release candidates Core Lightning v24.02.1 (50:33) B…

Mark “Murch” Erhardt and Dave Harding are joined by Josie Baker, Salvatore Ingala, and Fabian Jahr to discuss ⁠Newsletter #292⁠. News Updating BIP21 `bitcoin:` URIs (18:07) PSBTs for multiple concurrent MuSig2 signing sessions (46:30) Discussion about adding more BIP editors (58:33) GitLab backup for Bitcoin Core GitHub project (1:11) Releases and …

Mark “Murch” Erhardt and Mike Schmidt are joined by Richard Myers, Rijndael, Luke Dashjr, and Jason Hughes to discuss Newsletter #291. News Trustless contract for miner feerate futures (1:31) Coin selection for liquidity providers (7:18) Simple vault prototype using `OP_CAT` (21:15) Sending and receiving ecash using LN and ZKCPs (44:44) Selected Q&…

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, callebtc, Chris Stewart, Fabian Jahr, and Pierre Corbin to discuss ⁠Newsletter #290⁠. News DNS-based human-readable Bitcoin payment instructions (1:41) Thinking about mempool incentive compatibility (9:50) Cashu and other ecash system design discussion (29:15) Continued discussion abo…

Dave Harding and Mike Schmidt are joined by Gregory Sanders and Gloria Zhao to discuss Newsletter #289. News Ideas for relay enhancements after cluster mempool is deployed (1:11) What would have happened if v3 semantics had been applied to anchor outputs a year ago? (25:55) Bitcoin-Dev mailing list move (35:47) I Love Free Software Day (37:56) Bitc…

Dave Harding and Mike Schmidt are joined by Bastien Teinturier and Eugene Siegel to discuss Newsletter #288. News Public disclosure of a block stalling bug in Bitcoin Core affecting LN (1:26) Securely opening zero-conf channels with v3 transactions (17:08) Requirement to verify inputs use segwit in protocols vulnerable to txid malleability (27:00) …

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao and Brandon Black to discuss ⁠Newsletter #287⁠. News Kindred replace by fee (1:10) Opposition to CTV based on commonly requiring exogenous fees (19:11) Selected Q&A from Bitcoin Stack Exchange How does block synchronization work in Bitcoin Core today? (28:14) How does headers-first pre…

Mark “Murch” Erhardt and Mike Schmidt are joined by Niklas Gögge, Bastien Teinturier, Anthony Towns, Gloria Zhao, Nicholas Gregory, and Tom Trevethan to discuss ⁠Newsletter #286⁠. News Disclosure of fixed consensus failure in btcd (1:33) Proposed changes to LN for v3 relay and ephemeral anchors (13:40) New documentation repository (29:56) Changes t…

Mark “Murch” Erhardt and Mike Schmidt are joined by Brandon Black, Chris Stewart, Gregory Sanders, and Oliver Gugger to discuss ⁠Newsletter #285⁠. News Disclosure of past vulnerability in Core Lightning (2:15) New LNHANCE combination soft fork proposed (4:59) Proposal for 64-bit arithmetic soft fork (21:08) Overview of cluster mempool proposal (38:…

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Gregory Sanders, Dave Harding, and Stéphan Vuylsteke to discuss Newsletter #284. News Discussion about LN anchors and v3 transaction relay proposal (1:03) LN-Symmetry research implementation (35:03) Bitcoin Core PR Review Club Nuke adjusted time (attempt 2) (50:01) Notable code and do…

Mark “Murch” Erhardt and Mike Schmidt are joined by Niklas Gögge, Antoine Riard, Abubakar Sadiq Ismail, Gloria Zhao, Salvatore Ingala, Johan Torås Halseth and SeedHammer Team to discuss Newsletter #283. News Disclosure of past LND vulnerabilities (2:07) Fee-dependent timelocks (25:09) Cluster fee estimation (8:32) How to specify unspendable keys in…

Mark “Murch” Erhardt, Dave Harding, and Mike Schmidt discuss ⁠Newsletter #282: 2023 Year-in-Review Special⁠. January Bitcoin Inquisition (10:59) Swap-in-potentiam (14:03) BIP329 wallet label export format (19:32) February Ordinals and inscriptions (20:22) Bitcoin Search, ChatBTC, and TL;DR (41:50) Peer storage backups (43:40) LN quality of service …

Mark “Murch” Erhardt and Dave Harding are joined by Bastien Teinturier and Rodolfo Novak to discuss Newsletter #281. News Discussion about griefing liquidity ads (0:46) Changes to services and client software Stratum v2 mining pool launches (15:43) Bitcoin network simulation tool warnet announced (16:31) Payjoin client for Bitcoin Core released (17…

Mark “Murch” Erhardt and Mike Schmidt are joined by Pieter Wuille and Matthew Zipkin to discuss Newsletter #280. News Cluster mempool discussion (0:57) Testing with warnet (32:42) Bitcoin Core PR Review Club Testing Bitcoin Core 26.0 Release Candidates (43:18) Releases and release candidates Bitcoin Core 26.0 (45:30) LND 0.17.3-beta.rc1 (57:41) Not…

Mark “Murch” Erhardt and Mike Schmidt are joined by Lisa Neigut and Bastien Teinturier to discuss Newsletter #279. News Update to the liquidity ads specification (1:00) Selected Q&A from Bitcoin Stack Exchange Is the Schnorr digital signature scheme a multisignature interactive scheme, and also not an aggregated non-interactive scheme? (38:49) Is i…

Dave Harding and Mike Schmidt are joined by Bastien Teinturier and Robin Linus to discuss Newsletter #278. News Offers-compatible LN addresses (1:20) Changes to services and client software BitMask Wallet 0.6.3 released (17:42) Opcode documentation website announced (20:08) Athena Bitcoin adds Lightning support (21:42) Blixt v0.6.9 released (22:22)…

Dave Harding and Mike Schmidt are joined by Gregory Sanders, Antoine Poinsot, and Max Edwards to discuss Newsletter #277. News Eliminating malleability from ephemeral anchor spends (1:54) Field Report: A Miniscript Journey (20:17) Releases and release candidates LND 0.17.1-beta (37:27) Bitcoin Core 26.0rc2 (40:05) Core Lightning 23.11rc1 (53:24) No…

Mark “Murch” Erhardt and Mike Schmidt are joined by Johan Torås Halseth and Abubakar Ismail to discuss Newsletter #276. News Mailing list hosting (1:05) HTLC aggregation with covenants (5:36) Bitcoin Core PR Review Club Fee Estimator updates from Validation Interface/CScheduler thread (16:47) Releases and release candidates Bitcoin Core 26.0rc2 (26…

Mark “Murch” Erhardt and Mike Schmidt discuss ⁠Newsletter #275⁠. News Continued discussion about scripting changes (0:40) Releases and release candidates LDK 0.0.118 (14:57) Rust Bitcoin 0.31.1 (17:35) Notable code and documentation changes Bitcoin Core #28685 (21:24) Bitcoin Core #28651 (22:34) Bitcoin Core #28565 (24:57) LND #7828 (31:01) LDK #26…

Mark “Murch” Erhardt and Mike Schmidt are joined by Bastien Teinturier, Fabian Jahr, Ethan Heilman, and Armin Sabouri to discuss Newsletter #274. News Replacement cycling vulnerability against HTLCs (1:40) Bitcoin UTXO set summary hash replacement (24:21) Research into generic covenants with minimal Script language changes (40:02) Proposed BIP for …

Mark “Murch” Erhardt and Mike Schmidt are joined by Robin Linus and Antoine Poinsot to discuss ⁠Newsletter #273⁠. News Security disclosure of issue affecting LN (1:09) Payments contingent on arbitrary computation (8:15) Proposed BIP for MuSig2 fields in PSBTs (26:44) Changes to services and client software BIP-329 Python library released (29:10) LN…

Mike Schmidt is joined by Steven Roose and Gloria Zhao to discuss Newsletter #272. News Specification for `OP_TXHASH` proposed (1:42) Bitcoin Core PR Review Club util: Type-safe transaction identifiers (18:36) Releases and release candidates LDK 0.0.117 (27:33) BDK 0.29.0 (28:35) Notable code and documentation changes Bitcoin Core #27596 (29:32) Bi…

Mark “Murch” Erhardt and Mike Schmidt are joined by Gijs van Dam and Dave Harding to discuss Newsletter #271. News Secure remote control of LN nodes (1:48) Payment splitting and switching (12:23) Pooled liquidity for LN (34:31) Releases and release candidates LND v0.17.0-beta (55:26) Notable code and documentation changes Eclair #2756 (58:26) LDK #…

Mark “Murch” Erhardt and Mike Schmidt are joined by Anthony Towns to discuss Newsletter #270. News Using covenants to improve LN scalability (2:07) Selected Q&A from Bitcoin Stack Exchange How did peer discovery work in Bitcoin v0.1? (20:42) Would a series of reorgs cause Bitcoin to break because of the 2-hour block time difference restriction? (22…

Mark “Murch” Erhardt and Mike Schmidt are joined by Sergi Delgado Segura to discuss Newsletter #269.

Mark “Murch” Erhardt and Mike Schmidt are joined by Olaoluwa Osuntokun, Greg Sanders, and Pieter Wuille to discuss Newsletter #268. News Specifications for taproot assets (1:10) LN messaging changes for PTLCs (53:22) Bitcoin Core PR Review Club BIP324 (28:31) Releases and release candidates LND v0.17.0-beta.rc2 (1:18:22) Notable code and documentat…

Mark “Murch” Erhardt and Mike Schmidt are joined by Tom Briar and Nick Farrow to discuss Newsletter #267. News Bitcoin transaction compression (1:13) Privacy enhanced co-signing (14:43) Releases and release candidates Libsecp256k1 0.4.0 (35:43) LND v0.17.0-beta.rc2 (37:26) Notable code and documentation changes Bitcoin Core #28354 (38:43) LDK #2468…

This podcast is a compilation of previous podcast discussions about the Waiting for confirmation series on mempool and relay policy. Series coauthors Mark “Murch” Erhardt and Gloria Zhao describe the concepts in the series, discuss with special guests, and take questions from the audience. 1. Why do we have a mempool? (0:50) 2. Incentives (13:10) 3…

Mark “Murch” Erhardt and Mike Schmidt are joined by Matt Corallo, Brandon Black, Gregory Sanders, and James O’Beirne to discuss Newsletter #266. News Disclosure of past LN vulnerability related to fake funding (21:11) Covenant mashup using `TXHASH` and `CSFS` (1:30) Selected Q&A from Bitcoin Stack Exchange Is there an economic incentive to switch f…

Mark “Murch” Erhardt and Mike Schmidt are joined by Peter Todd and Henrik Skogstrøm to discuss Newsletter #265. News Fraud proofs for outdated backup state (1:20) Changes to services and client software Scaling Lightning call for feedback (18:07) Torq v1.0 released (30:31) Blixt Wallet v0.6.8 released (36:03) Sparrow 1.7.8 released (37:19) Open sou…

Mark “Murch” Erhardt and Mike Schmidt are joined by Brandon Black and Dan Gould to discuss Newsletter #264. News Adding expiration metadata to silent payment addresses (0:51) Serverless payjoin (14:28) Field Report: Implementing MuSig2 (33:10) Releases and release candidates Core Lightning 23.08rc2 (44:40) Notable code and documentation changes Bit…

Mark “Murch” Erhardt and Mike Schmidt are joined by Dave Harding, Clara Shikhelman, Peter Todd, Josie Baker, and Eduardo Quintana to discuss Newsletter #263. Action items Severe Libbitcoin Bitcoin Explorer vulnerability (1:25) News Denial-of-Service (DoS) protection design philosophy (12:00) HTLC endorsement testing and data collection (18:40) Prop…

Mark “Murch” Erhardt and Mike Schmidt are joined by Tom Trevethan, Lisa Neigut, and Dusty Daemon to discuss Newsletter #262. News Transcripts of periodic LN specification meetings (1:13) Safety of blind MuSig2 signing (5:07) Releases and release candidates BTCPay Server 1.11.1 (24:30) Notable code and documentation changes Bitcoin Core #26467 (25:3…

Mark “Murch” Erhardt and Mike Schmidt are joined by Greg Sanders and Bastien Teinturier to discuss Newsletter #261. News Simplified LN closing protocol (1:03) LN Summit notes (10:48) Selected Q&A from Bitcoin Stack Exchange How can I manually (on paper) calculate a Bitcoin public key from a private key? (57:18) Why are there 17 native segwit versio…

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Rearden Code, Ken Sedgwick, and Jack Ronaldi to discuss Newsletter #260. Waiting for confirmation #10: Get Involved (2:01) Changes to services and client software Wallet 10101 beta testing pooling funds between LN and DLCs (14:56) LDK Node announced (17:14) Payjoin SDK announced (20:0…

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Bastien Teinturier, and Martin Zumsande to discuss Newsletter #259. News LN specification clean up proposed (0:58) Waiting for confirmation #9: Policy Proposals (18:59) Bitcoin Core PR Review Club Stop relaying non-mempool txs (41:42) Releases and release candidates LND v0.16.4-beta (…

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao to discuss Newsletter #258. Waiting for confirmation #8: Policy as an Interface (0:30) Releases and release candidates Core Lightning 23.05.2 (10:27) Notable code and documentation changes Bitcoin Core #24914 (22:03) Bitcoin Core #27896 (24:47) Core Lightning #6334 (27:51) BIPs #1452 (…

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Robin Linus, Dave Harding, and Pavlenex to discuss Newsletter #257. News Preventing coinjoin pinning with v3 transaction relay (16:08) Speculatively using hoped-for consensus changes (1:33) Waiting for confirmation #7: Network Resources (24:46) Selected Q&A from Bitcoin Stack Exchange…

Mark “Murch” Erhardt and Mike Schmidt are joined by Thomas Voegtlin to discuss Newsletter #256. News Proposal to extend BOLT11 invoices to request two payments (1:00) Waiting for confirmation #6: Policy Consistency (19:25) Changes to services and client software Greenlight libraries open sourced (32:01) Tapscript debugger Tapsim (33:25) Bitcoin Kee…

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Ruben Somsen, Josie Baker, Matthew Zipkin, and Joost Jager to discuss Newsletter #255. News Discussion about the taproot annex (1:32) Draft BIP for silent payments (22:17) Waiting for confirmation #5: Policy for Protection of Node Resources (41:48) Bitcoin Core PR Review Club Allow in…