Bitcoin Optech Podcast
Join Bitcoin Optech as we discuss Bitcoin and Lightning technology each week and review our newsletters. https://bitcoinops.org/
Bitcoin Optech: Newsletter #391 Recap
11 Feb 2026
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Toby Sharp, Chris Hyunhum Cho, Jonas Nick, and Antoine Poinsot to discuss Newsletter #391
Bitcoin Optech: Newsletter #390 Recap
4 Feb 2026
Mark “Murch” Erhardt and Gustavo Flores Echaiz are joined by Liam Eagen to discuss Newsletter #390 (https://bitcoinops.org/en/newsletters/2026/01/30/). News ● Argo: a garbled-circuits scheme
Bitcoin Optech: Newsletter #389 Recap
27 Jan 2026
Mark “Murch” Erhardt and Mike Schmidt are joined by René Pickhardt to discuss Newsletter #389 (https://bitcoinops.org/en/newsletters/2026/01/23/). News ● A mathematical theory of
Bitcoin Optech: Newsletter #388 Recap
20 Jan 2026
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Bruno Garcia to discuss Newsletter #388 (https://bitcoinops.org/en/newsletters/2026/01/16/). News ● An
Bitcoin Optech: Newsletter #387 Recap
14 Jan 2026
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by René Pickhardt and Craig Raw to discuss Newsletter #387 (https://bitcoinops.org/en/newsletters/2026/01/09/).
Bitcoin Optech: Newsletter #386 Recap
6 Jan 2026
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Anthony Towns and Mikhail Kudinov to discuss Newsletter #386
Bitcoin Optech: Newsletter #385: 2025 Year-in-Review Special Recap
24 Dec 2025
Mark “Murch” Erhardt and Mike Schmidt are joined by Bastien Teinturier, Rearden Code, and Pieter Wuille to discuss Newsletter #385: 2025 Year-in-Review Special
Bitcoin Optech: Newsletter #384 Recap
16 Dec 2025
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Matt Morehouse and Salvatore Ingala to discuss Newsletter #384
Bitcoin Optech: Newsletter #383 Recap
9 Dec 2025
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Moonsettler and Julian to discuss Newsletter #383 (https://bitcoinops.org/en/newsletters/2025/12/05/). News ●
Bitcoin Optech: Newsletter #382 Recap
3 Dec 2025
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt discuss Newsletter #382 (https://bitcoinops.org/en/newsletters/2025/11/28/). News ● Stats on compact block reconstructions
Bitcoin Optech: Newsletter #381 Recap
25 Nov 2025
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Antoine Poinsot and ZmnSCPxj to discuss Newsletter #381 (https://bitcoinops.org/en/newsletters/2025/11/21/). News ●
Bitcoin Optech: Newsletter #380 Recap
18 Nov 2025
Mark “Murch” Erhardt and Mike Schmidt are joined by TheCharlatan to discuss Newsletter #380 (https://bitcoinops.org/en/newsletters/2025/11/14/). Releases and release candidates ● LND
Bitcoin Optech: Newsletter #379 Recap
12 Nov 2025
Mark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Sebastian Falbesoner, PortlandHODL, Tadge Dryja, and Antoine Poinsot to discuss Newsletter #379
Bitcoin Optech: Newsletter #378 Recap
4 Nov 2025
Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #378 (https://bitcoinops.org/en/newsletters/2025/10/31/). News ● CPU DoS from unconfirmed transaction processing (1:00) Selected Q&A
Bitcoin Optech: Newsletter #377 Recap
29 Oct 2025
Gustavo Flores Echaiz and Mike Schmidt are joined by Abubakar Sadiq Ismail and Carla Kirk-Cohen to discuss Newsletter #377 (https://bitcoinops.org/en/newsletters/2025/10/24/). News ●
Bitcoin Optech: Newsletter #376 Recap
28 Oct 2025
Gustavo Flores Echaiz and Mike Schmidt are joined by Francesco Madonna and supertestnet to discuss Newsletter #376 (https://bitcoinops.org/en/newsletters/2025/10/17/). News ● Continued discussion
Bitcoin Optech: Newsletter #375 Recap
17 Oct 2025
Gustavo Flores Echaiz and Mike Schmidt are joined by Sindura Saraswathi, ZmnSCPxj, and Eugene Siegel to discuss Newsletter #375 (https://bitcoinops.org/en/newsletters/2025/10/10/). News ●
Bitcoin Optech: Newsletter #374 Recap
7 Oct 2025
Mark “Murch” Erhardt and Mike Schmidt are joined by Gustavo Flores Echaiz to discuss Newsletter #374 (https://bitcoinops.org/en/newsletters/2025/10/03/). Changing consensus ● Draft BIPs for
Bitcoin Optech: Newsletter #241 Recap
13 Mar 2023
Mark “Murch” Erhardt and Mike Schmidt are joined by James O’Beirne and Greg Sanders to discuss Newsletter #241 (https://bitcoinops.org/en/newsletters/2023/03/08/). News • Alternative
Bitcoin Optech: Newsletter #240 Recap
6 Mar 2023
Mark "Murch" Erhardt and Mike Schmidt discuss Newsletter #240 (https://bitcoinops.org/en/newsletters/2023/03/01/). News • Faster seed backup checksums (2:31) Releases and release candidates
Bitcoin Optech: Newsletter #239 Recap
27 Feb 2023
Join Mark “Murch” Erhardt and Mike Schmidt as they are joined by James O’Beirne, Christian Decker, and Russell O’Connor to discuss Newsletter #239
Bitcoin Optech: Newsletter #238 Recap
16 Feb 2023
Mark “Murch” Erhardt and Mike Schmidt are joined by AJ Towns, Yuval Kogman, Alex Myers and Vivek Kasarabada to discuss Newsletter #238 (https://bitcoinops.org/en/newsletters/2023/02/15/). News
Bitcoin Optech: Newsletter #237 Recap
9 Feb 2023
Mark “Murch” Erhardt and Mike Schmidt are joined by Martin Zumsande and Carla Kirk-Cohen to discuss Newsletter #237 (https://bitcoinops.org/en/newsletters/2023/02/08/). News • Discussion
Bitcoin Optech: Newsletter #236 Recap
2 Feb 2023
Mark “Murch” Erhardt and Mike Schmidt are joined by Dan Gould and Bastien Teinturier to discuss Newsletter #236 (https://bitcoinops.org/en/newsletters/2023/02/01/). News • Serverless
Bitcoin Optech: Newsletter #235 Recap
26 Jan 2023
Mark “Murch” Erhardt and Mike Schmidt are joined by Valentine Wallace to discuss Newsletter #235 (https://bitcoinops.org/en/newsletters/2023/01/25/). News • Ephemeral anchors compared to
Bitcoin Optech: Newsletter #234 Recap
19 Jan 2023
Mark “Murch” Erhardt and Mike Schmidt are joined by James O’Beirne to discuss Newsletter #234 (https://bitcoinops.org/en/newsletters/2023/01/18/). News • Proposal for new vault-specific
Bitcoin Optech: Newsletter #233 Recap
12 Jan 2023
Mark “Murch” Erhardt and Mike Schmidt are joined by Jesse Posner and ZmnSCPxj to discuss Newsletter #233 (https://bitcoinops.org/en/newsletters/2023/01/11/). News • Non-interactive LN
Bitcoin Optech: Newsletter #232 Recap
5 Jan 2023
Mark “Murch” Erhardt and Mike Schmidt are joined by Peter Todd to discuss Newsletter #232 (https://bitcoinops.org/en/newsletters/2023/01/04/). • • • • • •
Bitcoin Optech: Newsletter #231: 2022 Year-in-Review Special Recap
22 Dec 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Dave Harding to discuss Newsletter #231 (https://bitcoinops.org/en/newsletters/2022/12/21/). January • Stateless invoices (7:37)
Bitcoin Optech: Newsletter #230 Recap
15 Dec 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Ben Carman and Joost Jager to discuss Newsletter #230 (https://bitcoinops.org/en/newsletters/2022/12/14/). News • Factory-optimized LN
Bitcoin Optech: Newsletter #229 Recap
8 Dec 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Greg Sanders and Larry Ruane to discuss Newsletter #229 (https://bitcoinops.org/en/newsletters/2022/12/07/). • • • •
Bitcoin Optech: Newsletter #228 Recap
1 Dec 2022
Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #228 (https://bitcoinops.org/en/newsletters/2022/11/30/). News • Reputation credentials proposal to mitigate LN jamming attacks
Bitcoin Optech: Newsletter #227 Recap
23 Nov 2022
Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #227 (https://bitcoinops.org/en/newsletters/2022/11/23/). • • • • • • • • • •
Bitcoin Optech: Newsletter #226 Recap
17 Nov 2022
Mike Schmidt is joined by Salvatore Ingala and Clara Shikhelman to discuss Newsletter #226 (https://bitcoinops.org/en/newsletters/2022/11/16/). • • • • • • •
Bitcoin Optech: Newsletter #225 Recap
10 Nov 2022
Mark “Murch” Erhardt and Mike Schmidt discuss Newsletter #225 (https://bitcoinops.org/en/newsletters/2022/11/09/). News • Continued discussion about enabling full-RBF (0:54) • Block
Bitcoin Optech: Newsletter #224 Recap
3 Nov 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Bastien Teinturier and Joost Jager to discuss Newsletter #224 (https://bitcoinops.org/en/newsletters/2022/11/02/). News • Mempool
Bitcoin Optech: Newsletter #223 Recap
27 Oct 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao, Gregory Sanders, and Sergej Kotliar to discuss Newsletter #223 (https://bitcoinops.org/en/newsletters/2022/10/26/). • •
Bitcoin Optech: Newsletter #222 Recap
20 Oct 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by John Light and Gregory Sanders to discuss Newsletter #222 (https://bitcoinops.org/en/newsletters/2022/10/19/). News • Block parsing bug
Bitcoin Optech: Newsletter #221 Recap
13 Oct 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Ruben Somsen and Martin Zumsande to discuss Newsletter #221 (https://bitcoinops.org/en/newsletters/2022/10/12/). News • LN with long
Bitcoin Optech: Newsletter #220 Recap
6 Oct 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Gloria Zhao and Rene Pickhardt to discuss Newsletter #220 (http://localhost:4000/en/newsletters/2022/10/05/). News • Proposed new
Bitcoin Optech: Newsletter #219 Recap
29 Sep 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Anthony Towns and Andreas Kouloumos to discuss Newsletter #219 (https://bitcoinops.org/en/newsletters/2022/09/28/). News • LN fee
Bitcoin Optech: Newsletter #218 Recap
22 Sep 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Jeremy Rubin and Paul Sztorc to discuss Newsletter #218 (https://bitcoinops.org/en/newsletters/2022/09/21/). News • Creating drivechains
Bitcoin Optech: Newsletter #217 Recap
15 Sep 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Larry Ruane to discuss Newsletter #217 (https://bitcoinops.org/en/newsletters/2022/09/14/). Bitcoin Core PR Review Club • Reduce
Bitcoin Optech: Newsletter #216 Recap
8 Sep 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Daniela Brozzoni to discuss Newsletter #216 (http://localhost:4000/en/newsletters/2022/09/07/). Notable code and documentation changes •
Bitcoin Optech: Newsletter #215 Recap
1 Sep 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Craig Raw to discuss Newsletter #215 (https://bitcoinops.org/en/newsletters/2022/08/31/). News • Wallet label export format (1:00)
Bitcoin Optech: Newsletter #214 Recap
25 Aug 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Antoine Riard and Rodolfo Novak to discuss Newsletter #214 (https://bitcoinops.org/en/newsletters/2022/08/24/). News • Overview of
Bitcoin Optech: Newsletter #213 Recap
18 Aug 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Lloyd Fournier to discuss Newsletter #213 (https://bitcoinops.org/en/newsletters/2022/08/17/). News • Using Bitcoin-compatible BLS
Bitcoin Optech: Newsletter #212 Recap
11 Aug 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Peter Todd, Larry Ruane, and Gloria Zhao to discuss Newsletter #212 (http://localhost:4000/en/newsletters/2022/08/10/). News • Lowering
Bitcoin Optech: Newsletter #211 Recap
3 Aug 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Andrew Chow and Rodolfo Novak to discuss Newsletter #211 (http://localhost:4000/en/newsletters/2022/08/03/). News • Multiple derivation
Bitcoin Optech: Newsletter #210 Recap
27 Jul 2022
Mark “Murch” Erhardt and Mike Schmidt are joined by Ruben Somsen to discuss Newsletter #210 (https://bitcoinops.org/en/newsletters/2022/07/27/). News • Multiformat single-sig message