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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

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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01:18:31

Bitcoin Optech: Newsletter #297 Recap

Bitcoin Optech Podcast ·

2024/04/15

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 interpreter (37:19) Releases and release candidates HWI 3.0.0 (46:17) Core Lightning 24.02.2 (48:06) Bitcoin Core 27.0rc1 (49:41)

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01:03:06

Bitcoin Optech: Newsletter #296 Recap

Bitcoin Optech Podcast ·

2024/04/04

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) Bitcoin Core #29242 (43:50) Core Lightning #7094 (52:59) BDK #1351 (54:41)

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01:36:49

Bitcoin Optech: Newsletter #295 Recap

Bitcoin Optech Podcast ·

2024/03/28

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 risks of running a pre-SegWit node (0.12.1)? (50:30) When is OP_RETURN cheaper than OP_FALSE OP_IF? (55:51) Why does BIP-340 use

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01:11:30

Bitcoin Optech: Newsletter #294 Recap

Bitcoin Optech Podcast ·

2024/03/21

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 device released (44:19) Envoy v1.6.0 released (47:49) VLS v0.11.0 released (49:22) Portal hardware signing device announced (50:54)

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01:00:12

Bitcoin Optech: Newsletter #293 Recap

Bitcoin Optech Podcast ·

2024/03/14

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) Bitcoin Core 26.1rc1 (51:03) Bitcoin Core 27.0rc1 (52:11) Notable code and documentation changes LND #8136 (54:58) LND #8499

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01:22:07

Bitcoin Optech: Newsletter #292 Recap

Bitcoin Optech Podcast ·

2024/03/07

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 release candidates Eclair v0.10.0 (1:03:24) Bitcoin Core 26.1rc1 (1:05:18) Notable code and documentation changes Bitcoin Core

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01:32:29

Bitcoin Optech: Newsletter #290 Recap

Bitcoin Optech Podcast ·

2024/02/22

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 about 64-bit arithmetic and `OP_INOUT_AMOUNT` opcode (39:52) Improved reproducible ASMap creation process (49:17) Changes to services and

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01:02:50

Bitcoin Optech: Newsletter #289 Recap

Bitcoin Optech Podcast ·

2024/02/15

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) Bitcoin Core PR Review Club Add `maxfeerate` and `maxburnamount` args to `submitpackage` (39:57) Notable code and documentation changes

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01:21:33

Bitcoin Optech: Newsletter #288 Recap

Bitcoin Optech Podcast ·

2024/02/08

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) Proposal for replace by feerate to escape pinning (35:21) Bitcoin-Dev mailing list migration update (51:15) Releases and release

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