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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

00:38:05

Bitcoin Optech: Newsletter #269 Recap

Bitcoin Optech Podcast ·

2023/09/21

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

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01:22:32

Bitcoin Optech: Newsletter #268 Recap

Bitcoin Optech Podcast ·

2023/09/14

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 documentation changes Bitcoin Core #26567 (1:20:52)

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00:42:58

Bitcoin Optech: Newsletter #267 Recap

Bitcoin Optech Podcast ·

2023/09/07

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 (40:33)

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02:40:10

Bitcoin Optech: Waiting for Confirmation Special

Bitcoin Optech Podcast ·

2023/09/03

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. Bidding for block space (31:19) 4. Feerate estimation (47:27) 5. Policy for Protection of Node Resources (59:04) 6. Policy Consistency (1:09:47)

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01:13:45

Bitcoin Optech: Newsletter #266 Recap

Bitcoin Optech Podcast ·

2023/08/31

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 from P2WPKH to P2TR? (34:44) What is the BIP324 encrypted packet structure? (37:31) What is the false positive rate for compact block

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00:58:52

Bitcoin Optech: Newsletter #265 Recap

Bitcoin Optech Podcast ·

2023/08/24

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 source ASIC miner bitaxeUltra prototype (38:21) FROST software Frostsnap announced (39:10) Libfloresta library announced (42:25)

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00:56:47

Bitcoin Optech: Newsletter #264 Recap

Bitcoin Optech Podcast ·

2023/08/17

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 Bitcoin Core #27213 (45:46) Bitcoin Core #28008 (50:29) LDK #2308 (55:15)

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01:35:19

Bitcoin Optech: Newsletter #263 Recap

Bitcoin Optech Podcast ·

2023/08/10

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) Proposed changes to Bitcoin Core default relay policy (28:04) Libbitcoin Bitcoin Explorer security disclosure (1:25) Bitcoin Core PR Review

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00:58:42

Bitcoin Optech: Newsletter #262 Recap

Bitcoin Optech Podcast ·

2023/08/04

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 (25:31) Core Lightning #6378 (27:19) Core Lightning #6399 (33:03) Core Lightning #6389 (35:48) Core Lightning #6403 (37:37) Core

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01:19:09

Bitcoin Optech: Newsletter #261 Recap

Bitcoin Optech Podcast ·

2023/07/27

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 versions? (59:43) Does `0 OP_CSV` force the spending transaction to signal BIP125 replaceability? (1:03:04) How do route hints affect

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01:08:56

Bitcoin Optech: Newsletter #260 Recap

Bitcoin Optech Podcast ·

2023/07/20

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 (20:09) Validating Lightning Signer (VLS) beta announced (25:27) BitGo adds MuSig2 support (37:42) Peach adds RBF support (44:34) Phoenix

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00:58:10

Bitcoin Optech: Newsletter #259 Recap

Bitcoin Optech Podcast ·

2023/07/13

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 (50:43) Notable code and documentation changes Bitcoin Core #27869 (51:48)

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00:37:53

Bitcoin Optech: Newsletter #258 Recap

Bitcoin Optech Podcast ·

2023/07/06

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 (31:08) BIPs #1354 (33:55)

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01:47:48

Bitcoin Optech: Newsletter #257 Recap

Bitcoin Optech Podcast ·

2023/06/29

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 Why do Bitcoin nodes accept blocks that have so many excluded transactions? (57:38) Why does everyone say that soft forks restrict the

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00:49:48

Bitcoin Optech: Newsletter #256 Recap

Bitcoin Optech Podcast ·

2023/06/22

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 Keeper 1.0.4 announced (35:09) Lightning wallet EttaWallet announced (35:47) zkSNARK-based block header sync PoC announced (37:09)

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01:18:39

Bitcoin Optech: Newsletter #255 Recap

Bitcoin Optech Podcast ·

2023/06/15

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 inbound whitebind connections to more aggressively evict peers when slots are full (53:38) Releases and release candidates Core Lightning

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00:55:29

Bitcoin Optech: Newsletter #254 Recap

Bitcoin Optech Podcast ·

2023/06/08

Dave Harding and Mike Schmidt are joined by Gloria Zhao, Johan Torås Halseth, and Salvatore Ingala to discuss Newsletter #254. News Using MATT to replicate CTV and manage joinpools (1:23) Waiting for confirmation #4: Feerate estimation (24:23) Releases and release candidates LND 0.16.3-beta (40:37) Notable code and documentation changes Bitcoin Core #26485 (42:34) Eclair #2642 (44:40) LND #7645 (46:11) LND #7726 (48:25) LDK #2293 (51:04)

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01:46:25

Bitcoin Optech: Newsletter #253 Recap

Bitcoin Optech Podcast ·

2023/06/01

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Burak Keceli, Dave Harding, and Joost Jager to discuss Newsletter #253. News Proposal for a managed joinpool protocol (1:46) Transaction relay over Nostr (40:38) Waiting for confirmation #3: Bidding for block space (1:00:02) Selected Q&A from Bitcoin Stack Exchange Testing pruning logic with bitcoind (1:12:38) What's the governing motivation for the descendent size limit? (1:13:19) How does it contribute to the

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01:05:41

Bitcoin Optech: Newsletter #252 Recap

Bitcoin Optech Podcast ·

2023/05/25

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Robin Linus, and Lukas George to discuss Newsletter #252. News State compression with zero-knowledge validity proofs (1:05) Waiting for confirmation #2: Incentives (19:00) Changes to services and client software Passport firmware 2.1.1 released (37:19) MuSig wallet Munstr released (37:40) CLN plugin manager Coffee released (38:49) Electrum 4.4.3 released (40:01) Trezor Suite adds coinjoin support (40:32)

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01:13:44

Bitcoin Optech: Newsletter #251 Recap

Bitcoin Optech Podcast ·

2023/05/18

Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Carla Kirk-Cohen, Severin Bühler, and Dan Gould to discuss Newsletter #251. News Testing HTLC endorsement (1:33) Request for feedback on proposed specifications for LSPs (14:52) Challenges with zero-conf channels when dual funding (20:59) Advanced payjoin applications (24:51) Summaries of Bitcoin Core developers in-person meeting (37:35) Waiting for confirmation #1: why do we have a mempool? (51:07) Releases and

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