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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

00:49:53

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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01:02:08

Bitcoin Optech: Newsletter #287 Recap

Bitcoin Optech Podcast ·

2024/02/01

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 prevent disk-fill attack? (30:31) Is BIP324 v2transport redundant on Tor and I2P connections? (33:57) What's a rule of thumb for

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01:05:43

Bitcoin Optech: Newsletter #291 Recap

Bitcoin Optech Podcast ·

2024/02/01

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&A from Bitcoin Stack Exchange Why can't nodes have the relay option to disallow certain transaction types? (49:41) What is the

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01:10:28

Bitcoin Optech: Newsletter #286 Recap

Bitcoin Optech Podcast ·

2024/01/26

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 to services and client software Envoy 1.5 released (45:41) Liana v4.0 released (46:39) Mercury Layer announced (47:46) AQUA wallet

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01:15:57

Bitcoin Optech: Newsletter #285 Recap

Bitcoin Optech Podcast ·

2024/01/18

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 (38:25) Updated specification and implementation of Bitcoin transaction compression (45:22) Discussion of Miner Extractable Value (MEV) in

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01:08:20

Bitcoin Optech: Newsletter #284 Recap

Bitcoin Optech Podcast ·

2024/01/11

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 documentation changes LND #8308 (1:05:06)

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01:26:25

Bitcoin Optech: Newsletter #283 Recap

Bitcoin Optech Podcast ·

2024/01/04

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 descriptors (17:48) V3 transaction pinning costs (34:14) Descriptors in PSBT draft BIP (48:19) Verification of arbitrary programs

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02:18:26

Bitcoin Optech: Newsletter #282: 2023 Year-in-Review...

Bitcoin Optech Podcast ·

2023/12/27

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 (44:10) HTLC endorsement (47:31) Codex32 (48:33) March Hierarchical channels (50:57) Summary 2023: Soft fork proposals

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01:04:09

Bitcoin Optech: Newsletter #281 Recap

Bitcoin Optech Podcast ·

2023/12/19

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 (17:30) Call for community block arrival timestamps (18:44) Envoy 1.4 released (21:41) BBQr encoding scheme announced (22:09) Zeus

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01:02:09

Bitcoin Optech: Newsletter #280 Recap

Bitcoin Optech Podcast ·

2023/12/07

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) Notable code and documentation changes Bitcoin Core #28848 (58:49) LDK #2540 (59:49)

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