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PODCAST

Bitcoin Optech Podcast

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

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All Episodes

01:14:44

Bitcoin Optech: Newsletter #317 Recap

Bitcoin Optech Podcast ·

2024/08/27

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 (39:45) Stratum v2 benchmarking tool released (41:31) STARK verification PoC on signet (42:52) SeedSigner 0.8.0 released (48:48)

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01:32:47

Bitcoin Optech: Newsletter #316 Recap

Bitcoin Optech Podcast ·

2024/08/20

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 candidates BDK 1.0.0-beta.1 (53:55) Core Lightning 24.08rc2 (54:10) LND v0.18.3-beta.rc1 (54:29) Notable code and documentation

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01:20:27

Bitcoin Optech: Newsletter #315 Recap

Bitcoin Optech Podcast ·

2024/08/13

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) Proposed BIP for scriptless threshold signatures (42:24) Optimistic verification of zero-knowledge proofs using CAT, MATT, and Elftrace (50:40)

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00:56:31

Bitcoin Optech: Newsletter #314 Recap

Bitcoin Optech Podcast ·

2024/08/06

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-beta.1 (41:01) Notable code and documentation changes Bitcoin Core #30515 (41:36) Bitcoin Core #30126 (43:00) Bitcoin Core #30482

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01:13:13

Bitcoin Optech: Newsletter #313 Recap

Bitcoin Optech Podcast ·

2024/07/30

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 maximizing miner revenue? (38:34) Is there an economic incentive to use P2WSH over P2TR? (42:26) How many blocks per second can

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01:20:41

Bitcoin Optech: Newsletter #312 Recap

Bitcoin Optech Podcast ·

2024/07/23

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 support (57:02) Stack Wallet adds RBF and CPFP support (57:42) BlueWallet adds silent payment send support (57:59) BOLT12 Playground

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00:46:00

Bitcoin Optech: Newsletter #311 Recap

Bitcoin Optech Podcast ·

2024/07/16

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 (40:04) BDK #1487 (41:20)

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00:53:35

Bitcoin Optech: Newsletter #310 Recap

Bitcoin Optech Podcast ·

2024/07/09

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 changes Bitcoin Core #28167 (37:48) Bitcoin Core #30007 (39:07) Bitcoin Core #30200 (40:37) Core Lightning #7342 (41:33) LND

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01:18:06

Bitcoin Optech: Newsletter #309 Recap

Bitcoin Optech Podcast ·

2024/07/02

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) Should an even Y coordinate be enforced after every key-tweak operation, or only at the end? (34:45) Signet mobile phone wallets? (37:28)

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00:54:56

Bitcoin Optech: Newsletter #308 Recap

Bitcoin Optech Podcast ·

2024/06/25

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 (40:52) Constant-time analysis tool cargo-checkct announced (41:26) Jade adds miniscript support (43:15) Ark implementation announced

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00:51:44

Bitcoin Optech: Newsletter #307 Recap

Bitcoin Optech Podcast ·

2024/06/19

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

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01:17:43

Bitcoin Optech: Newsletter #306 Recap

Bitcoin Optech Podcast ·

2024/06/11

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-bit arithmetic (31:27) `OP_CAT` script to validate proof of work (33:32) Proposed update to BIP21 (42:12) Releases and release candidates

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01:45:22

Bitcoin Optech: Newsletter #305 Recap

Bitcoin Optech Podcast ·

2024/06/04

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 Exchange What's the smallest possible coinbase transaction / block size? (1:13:32) Understanding Script's number encoding,

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01:23:42

Bitcoin Optech: Newsletter #304 Recap

Bitcoin Optech Podcast ·

2024/05/27

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 client software Silent payment resources (43:50) Cake Wallet adds silent payments (46:14) Coordinator-less coinjoin PoC (46:26)

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00:55:36

Bitcoin Optech: Newsletter #303 Recap

Bitcoin Optech Podcast ·

2024/05/21

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 Lightning #7190 (44:51) LDK #2973 (46:18) LDK #2907 (48:21) BDK #1403 (48:59) BIPs #1458 (50:57)

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00:47:58

Bitcoin Optech: Newsletter #302 Recap

Bitcoin Optech Podcast ·

2024/05/16

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 (28:16) Core Lightning #7111 (29:34) Libsecp256k1 #1518 (32:04) Rust Bitcoin #2707 (34:30) BIPs #1389 (37:29) BIPs #1567

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01:00:53

Bitcoin Optech: Newsletter #301 Recap

Bitcoin Optech Podcast ·

2024/05/09

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 v0.18.0-beta.rc1 (52:12) Notable code and documentation changes Bitcoin Core #28970 (26:33) Bitcoin Core #28016 (53:05) Bitcoin Core

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01:05:31

Bitcoin Optech: Newsletter #300 Recap

Bitcoin Optech Podcast ·

2024/05/02

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 (35:59) Notable code and documentation changes Bitcoin Core #27679 (36:48) Core Lightning #7240 (39:39) Eclair #2851 (44:02)

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00:49:53

Bitcoin Optech: Newsletter #299 Recap

Bitcoin Optech Podcast ·

2024/04/25

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 perspective? (32:10) Are replacement transactions larger in size than their predecessors and than non-RBF transactions? (34:15) Are Bitcoin

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00:54:29

Bitcoin Optech: Newsletter #298 Recap

Bitcoin Optech Podcast ·

2024/04/19

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 Transactions update (25:09) Bitcoin Keeper v1.2.1 released (28:10) BIP-329 label management software (29:02) Key agent Sigbash launches

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