Shows
Bitcoin Optech PodcastBitcoin Optech: Newsletter #379 RecapMark “Murch” Erhardt, Gustavo Flores Echaiz, and Mike Schmidt are joined by Sebastian Falbesoner, PortlandHODL, Tadge Dryja, and Antoine Poinsot to discuss Newsletter #379.News● Comparing performance of ECDSA signature validation in OpenSSL vs. libsecp256k1 (1:47) Changing consensus● Multiple discussions about restricting data (14:05) ● Post-quantum signature aggregation (1:00:05) ● Native STARK proof verification in Bitcoin Script (1:18:47) ● BIP54 implementation and test vectors (35:47) Releases and release candidates● Core Lightning 25.09.2 (1:30:54) ● LND 0.20.0-beta.rc3 (1:31:44) Notable code and...
2025-11-122h 07Bitcoin Optech PodcastBitcoin Optech: Newsletter #377 RecapGustavo Flores Echaiz and Mike Schmidt are joined by Abubakar Sadiq Ismail and Carla Kirk-Cohen to discuss Newsletter #377.News● Detecting block template feerate increases using cluster mempool (1:06) ● Channel jamming mitigation simulation results and updates (9:28) Changes to services and client software● BULL wallet launches (37:22) ● Sparrow 2.3.0 released (39:40) Releases and release candidates● Core Lightning 25.09.1 (40:47) ● Bitcoin Core 28.3 (41:18) Notable code and documentation changes● Bitcoin Core #33157 (43:00) ● Bitcoin Core #29675 (45:56) ● Bitcoin Core #335...
2025-10-2955 minBitcoin Optech PodcastBitcoin Optech: Newsletter #376 RecapGustavo Flores Echaiz and Mike Schmidt are joined by Francesco Madonna and supertestnet to discuss Newsletter #376.News● Continued discussion of block template sharing (17:30) ● B-SSL a Secure Bitcoin Signing Layer (2:54) Releases and release candidates● Bitcoin Core 30.0 (22:32) ● Bitcoin Core 29.2 (28:44) ● LDK 0.1.6 (29:37) Notable code and documentation changes● Eclair #3184 (30:59) ● Core Lightning #8597 (32:25) ● LDK #4117 (34:05) ● LDK #4077 (35:03) ● LDK #4154 (36:47)
2025-10-2838 minBitcoin Optech PodcastBitcoin Optech: Newsletter #375 RecapGustavo Flores Echaiz and Mike Schmidt are joined by Sindura Saraswathi, ZmnSCPxj, and Eugene Siegel to discuss Newsletter #375.News● Optimal Threshold Signatures (1:56) ● Flattening certain nested threshold signatures (14:33) ● Theoretical limitations on embedding data in the UTXO set (38:14) Bitcoin Core PR Review Club● Compact block harness (27:12) Releases and release candidates● Bitcoin Inquisition 29.1 (45:01) Notable code and documentation changes● Bitcoin Core #33453 (47:16) ● Bitcoin Core #33504 (51:52) ● Core Lightning #8563 (53:55) ● Core Lightning #8523 (5...
2025-10-171h 02Bitcoin Optech PodcastBitcoin Optech: Newsletter #374 RecapMark “Murch” Erhardt and Mike Schmidt are joined by Gustavo Flores Echaiz to discuss Newsletter #374.Changing consensus● Draft BIPs for Script Restoration (0:40) Releases and release candidates● Bitcoin Core 30.0rc2 (19:19) ● bdk-wallet 2.2.0 (23:39) ● LND v0.20.0-beta.rc1 (24:15) Notable code and documentation changes● Bitcoin Core #33229 (25:03) ● Bitcoin Core #33446 (26:55) ● LDK #3838 (28:11) ● LDK #4098 (30:40) ● LDK #4106 (33:40) ● LDK #4096 (35:43) ● LND #10133 (37:24) ● BDK #2029 (39:08) ● BIPs #1911 (42:15)
2025-10-0746 minBitcoin Optech PodcastBitcoin Optech: Newsletter #373 RecapMark “Murch” Erhardt and Mike Schmidt are joined by Matt Morehouse, Daniela Brozzoni, and Gustavo Flores Echaiz to discuss Newsletter #373.News● Eclair vulnerability (18:50) ● Research into feerate settings (0:35) Selected Q&A from Bitcoin Stack Exchange● Implications of OP_RETURN changes in upcoming Bitcoin Core version 30.0? (28:27) ● If OP_RETURN relay limits are ineffective, why remove the safeguard instead of keeping it as a default discouragement? (42:12) ● What are the worst-case stress scenarios from uncapped OP_RETURNs in Bitcoin Core v30? (43:25) ● If OP_RETURN need...
2025-10-011h 44
NoMadPodcastGustavo from SwapidoFor today's episode I had the pleasure of talking to the wonderful Gustavo J. Flores Echaiz. Gustavo is the CEO and Founder of Swapido. Swapido is a platform to sell bitcoin over the Lightning Network and instantly send pesos to any bank account in Mexico.Gustavo is also part of Bitcoin Optech, which Bitcoin users and businesses to integrate scaling technologies. Stay tuned and enjoy the episode!Check out Gustavo here:Ig: https://www.instagram.com/gustavojfeTwitter: https://x.com/gustavojfeLinkedIn: https://www.linkedin.com/in/gustavo-j-flores-echaizCheck...
2024-11-1825 min
Bitcoin & Expat StoriesMoving to Mexico as a US Marine Bitcoiner w/ Andrew Howard | EP 09Andrew Howard (@Andrew_J_Howard) shares his exciting life story: background in the USA marine corps, quitting his fiat lifestyle in Los Angeles to move to Mexico in the first month of the COVID pandemic, and getting into Bitcoin. He follows up by discussing his job as CBDO (Chief Business Development Officer) at Bitcoin Reserve and his experience living in Saupupn Miguel de Allende, Mexico. We end up talking about the USA versus Mexico, American politics, and what the future reserves for the two neighboring countries.The intro song is Karnaval by Key Watch, an up-and-coming artist...
2023-05-051h 09
Bitcoin & Expat StoriesTravel the World on the Bitcoin Standard w/ Paco de la India | EP 08Paco de la India (@runwithbitcoin) joins me in Queretaro, Mexico to talk about the 8 city Bitcoin Mexico tour I am co-organizing for him, his experience traveling the world, the nuances of real global adoption with a focus on Africa, and his future plans. Paco shares insights that no one else in the world understands about Bitcoin. Get full access to LatAm & Bitcoin Tech at gustavoflores.substack.com/subscribe
2023-04-2142 min
Bitcoin & Expat StoriesBitcoin Filmmaking with Bitcoin Shooter | EP 07In this episode, Bitcoin Shooter (@bitcoinshooter) joins Gustavo to share how he got into Bitcoin filmmaking by working for Max Keiser, who gave him his current pseudonym. We discuss Shooter’s first project, Comeback Country, a short film about El Salvador’s dark history and shining present, and his upcoming masterpiece, THE Bitcoin Film (21fs.tv). Gustavo agrees with Shooter that this film is highly needed and that it will revolutionize the messaging on Bitcoin.The intro song is Karnaval by Key Watch, an up-and-coming artist from Montreal. Get full access to LatAm & Bitcoin Tech...
2023-04-141h 04
Bitcoin & Expat StoriesMoving from Europe to Mexico with Aaron | EP 06In this episode, Aaron (@Aaron21R) joins Gustavo to talk about his move from his home country, the Netherlands, to a beach town in Mexico. We discuss the difference between our different regions in Mexico and what we like and don’t like about Mexico, highlighting the tradeoffs of moving from a first-world country to a third-world one. We accentuate that without Bitcoin, neither of us would’ve been able to understand the true meaning of Freedom. Get full access to LatAm & Bitcoin Tech at gustavoflores.substack.com/subscribe
2023-04-061h 20
Bitcoin & Expat StoriesBitcoin ATMs in Mexico with Pablo Urquiza | EP 05In this episode, Gustavo (@gustavojfe) welcomes Pablo Urquiza (@pablo_abuget), founder of Cryptoflamingo.io. We discuss Pablo's experience operating a Bitcoin ATM business in Mexico by diving deep into the challenges one faces: regulatory, banking, hardware and custodial API wallet providers. Pablo also discusses his experience living in Toronto, Canada, for eight years and the cultural differences between there and his hometown, Mexico City. The intro song is Karnaval by Key Watch, an up-and-coming artist from Montreal. Get full access to LatAm & Bitcoin Tech at gustavoflores.substack.com/subscribe
2023-03-251h 10
Bitcoin & Expat StoriesReal Estate with Bitcoin in Puerto Escondido with Prabanator ! EP 04In this episode, Gustavo (@gustavojfe) welcomes Fred (@prabanator), founder of Jellyfish.Market. We talk about Fred's experience living in Puerto Escondido, discovering Bitcoin, and his debut in the real estate business. He follows up to explain his company, Jellyfish, and how he helps expats buy land, build tiny homes, and manage their rentals, all transacted in Bitcoin. Fred shares tips and tricks about the real estate business in Oaxaca, Mexico. Get full access to LatAm & Bitcoin Tech at gustavoflores.substack.com/subscribe
2023-03-121h 15
Bitcoin & Expat StoriesMexican Culture and How Coldcard Mk4 Works with Tristan Borges Solari | EP 03In this episode, Gustavo (@gustavojfe) welcomes Tristan Borges Solari (@tristanborgess), Freelance Technical Writer. We talk about Tristan’s experience launching two startups, Mining X and Veriphi, his rating of many Mexican cities and towns, Mexican culture, nightlife & dating, and how it compares to life in Montréal and Portugal. In the second part of the conversation, Tristan unpacks how the Coldcard Mk4 works by explaining the steps of pin setup, entropy generation, unlocking the device, passphrase generation, and what purpose each one of the two secure element chips and the microcontroller plays. We end up by talking about Coinkite’s lates...
2023-03-031h 29
Bitcoin & Expat StoriesExploring Mexico and Teaching Data Science with David Venturi | EP 02In this episode, Gustavo (@gustavojfe) welcomes David Venturi (@daventuri), Analytics Coach, EdTech Expert & Founder of Analyst40.com. We talk about David's adventures of leaving Canada and exploring Mexico, his experience buying property in Mexico, his entry into the Bitcoin world through the Toronto Community, and being a member of a Sovereignty Group. We follow up by talking about his newly launched Data Analysis Coaching Business Analyst40.com, how you can start a career in Data Science, his thoughts on AI, Bitcoin, and the future of his industry. Get full access to LatAm & Bitcoin Tech at gustavoflores...
2023-02-211h 13
Bitcoin & Expat StoriesMoving to Mexico with Maciej Cepnik | EP 01Today, Gustavo (@gustavojfe) welcomes Maciej Cepnik (@cepnikMaciej), Social Media Coordinator at Bitrefill, and fellow Canadian Expat living in Mexico. In this episode, Maciej tells us about his experience escaping Canada, and settling in Queretaro, Mexico. He also shares many Expat stories, most happy, and some sad such as the homicide of his girlfriend's dear friend Rogelio, to the hands of Narco Cartels. Maciej describes his current job at Bitrefill, and the conversation ends with a discussion about Ordinals, a new Bitcoin NFT technology. You Get full access to LatAm & Bitcoin Tech at gustavoflores.substack.com/subscribe
2023-02-161h 12
La Sauce BitcoinLa Sauce Bitcoin #9 - Gustavo Flores Echaiz - VP chez Bull Bitcoin - Garde Autonome et TechnologiePour le 9e épisode de La Sauce Bitcoin, j'accueille Gustavo Flores Echaiz, le vice président éxecutif de BullBitcoin.com
Gustavo Flores Echaiz est avant tout un grand ami de longue dat, ainsi que mon partenaire d’affaires. J’ai commencé mes activités entrepreneuriales il y a très longtemps avec Gustavo. Nous avons plusieurs start-ups à notre actif et avons grandi ensemble dans le monde du Bitcoin.
Dans cet épisode, nous discutons des derniers mois au sein de Bull Bitcoin et plus spécifiquement la croissance qui s’est opérée.
Nous parlons gran...
2022-02-141h 18
La Sauce BitcoinLSB Épisode 3 - Entrevue avec Dave Pouliot - CEO de CoinmilesDans cet épisode, Maciej Cepnik acceuille Dave Pouliot, le CEO de Coinmiles.
Coinmiles est une entreprise Bitcoin Montréalaise qui permet à ses utilisateurs de recevoir des remises en argent Bitcoin en ligne et en personne dans plusieurs grands détaillants et commerces locaux.
Il suffit que l’utilisateur lie sa carte de crédit à l’application Coinmiles pour recevoir les récompenses. Dave nous raconte l’histoire fascinante de la fondation de son entreprise ainsi que de son évolution.
Nous discutons également de l’acceptation du Bitcoin comme monnaie à cours légal par le El Salvador et des nou...
2021-10-061h 05