<![CDATA[bitcoin++'s Insider Edition: Insider Interviews]]>https://insider.btcpp.dev/s/insider-interviewshttps://substackcdn.com/image/fetch/$s_!Y_ng!,w_256,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F30eeeceb-d343-4c5d-93d2-4da0d7357725_650x650.pngbitcoin++'s Insider Edition: Insider Interviewshttps://insider.btcpp.dev/s/insider-interviewsSubstackSun, 05 Apr 2026 01:38:22 GMT<![CDATA[B4OS Mentor Spotlight: Iván Fuentes Sánchez 🇪🇸]]>https://insider.btcpp.dev/p/b4os-mentor-spotlight-ivan-fuenteshttps://insider.btcpp.dev/p/b4os-mentor-spotlight-ivan-fuentesWed, 01 Apr 2026 21:01:15 GMTIvan is the CTO of B4OS and Librería de Satoshi. He shares his belief in his students future careers in Bitcoin development and support for Saving Satoshi 🐈

]]><![CDATA[B4OS Mentor Spotlight: Fox / Federico Zupicich 🇦🇷]]>https://insider.btcpp.dev/p/b4os-mentor-spotlight-fox-federicohttps://insider.btcpp.dev/p/b4os-mentor-spotlight-fox-federicoWed, 01 Apr 2026 15:02:13 GMTFox is the Director of B4OS and Librería de Satoshi, and an organizer of Argentina BitDevs. He shares the vision of taking the B4OS program beyond the Southern Cone and bringing it to the world. 🌎

]]><![CDATA[B4OS Student Feature: Héctor Salazar 🇨🇴]]>https://insider.btcpp.dev/p/b4os-student-feature-hector-salazarhttps://insider.btcpp.dev/p/b4os-student-feature-hector-salazarTue, 31 Mar 2026 21:01:46 GMTHéctor is a B4OS student from Colombia who has studied with Librería de Satoshi for three years. He shares how Lightning matters as a payment system in Latin America and why that’s the problem he is called to work on.

]]><![CDATA[OP_TWEAKADD is now BIP449]]>https://insider.btcpp.dev/p/op_tweakadd-is-now-bip449https://insider.btcpp.dev/p/op_tweakadd-is-now-bip449Tue, 31 Mar 2026 18:27:20 GMTJeremy Rubin has been in bitcoin development for a very long time. He cares deeply about the programmability part of money. In this episode of Insider Edition, sits down with Jeremy in Char’s Miami offices to talk about his opcode proposal, OP_TWEAKADD, which just got a number assigned. It’s now known as BIP449. Take a listen to find out more about what a TWEAKADD is and why it’s something nifty is excited about.

]]><![CDATA[B4OS Student Feature: Guillermo Schettino 🇦🇷]]>https://insider.btcpp.dev/p/b4os-student-feature-guillermo-schettinohttps://insider.btcpp.dev/p/b4os-student-feature-guillermo-schettinoTue, 31 Mar 2026 15:03:11 GMTGuillermo is a student of both B4OS and the BOSS challenge. He’s made serious progress contributing to the Peer Observer project by 0xB10C and taking third place at the Bitcoin++ Floripa hackathon.

]]><![CDATA[B4OS Student Feature: Ignacio Porte 🇨🇱]]>https://insider.btcpp.dev/p/b4os-student-feature-ignacio-portehttps://insider.btcpp.dev/p/b4os-student-feature-ignacio-porteWed, 25 Mar 2026 15:01:21 GMT

Ignacio started his career working for Buda.com, where he was introduced to bitcoin maximalism. It was at Santiago BitDevs where he learned about the B4OS program by Librería de Satoshi. He earned a grant contributing to LDNK, under the guidance of a fellow Chilean mentor.

]]><![CDATA[Scaling Bitcoin off-chain with PIPEs]]>https://insider.btcpp.dev/p/scaling-bitcoin-off-chain-with-pipeshttps://insider.btcpp.dev/p/scaling-bitcoin-off-chain-with-pipesWed, 25 Mar 2026 14:02:50 GMT

]]><![CDATA[B4OS Student Feature: Talking Meat 🇺🇾]]>https://insider.btcpp.dev/p/b4os-student-feature-talking-meathttps://insider.btcpp.dev/p/b4os-student-feature-talking-meatTue, 24 Mar 2026 21:45:50 GMTTalking Meat has been a software and game developer for 20 years. Now he runs the nodes and server infrastructure that power the Librería de Satoshi platform, and dreams of future integrations between bitcoin and video games.

]]><![CDATA[B4OS Student Feature: Diego Bianqui 🇦🇷]]>https://insider.btcpp.dev/p/b4os-student-feature-diego-bianquihttps://insider.btcpp.dev/p/b4os-student-feature-diego-bianquiTue, 24 Mar 2026 15:00:29 GMTDiego worked a corporate job for 15 years at Accenture before meeting the Librería de Satoshi team at LABITCONF Buenos Aires. He is a student in their current cohort, and tells us about his “gossip observer” hackathon project and incoming PRs to Bitcoin Dev Kit.

]]><![CDATA[B4OS Student Feature: Kley Santos 🇻🇪 ]]>https://insider.btcpp.dev/p/b4os-student-feature-kley-santoshttps://insider.btcpp.dev/p/b4os-student-feature-kley-santosTue, 24 Mar 2026 00:30:45 GMTKley shares his journey through the B4OS program, where he got his start contributing to Fedimint building the UI for the notification system.

Now he’s building the Librería de Satoshi course platform, which rewards students with sats for successfully completing Bitcoin developer courses.

]]><![CDATA[B4OS Student Feature: Fernando Ledesma 🇪🇨]]>https://insider.btcpp.dev/p/b4os-student-feature-fernando-ledesmahttps://insider.btcpp.dev/p/b4os-student-feature-fernando-ledesmaMon, 23 Mar 2026 20:49:14 GMTFernando shares how discovering the B4OS program by Librería de Satoshi was the moment he left his fiat job behind. As a dedicated student he earned a six-month open source developer grant to work on Lightning projects.

He traveled to BTC++ Berlin to present his work, where he met the Moneydevkit team who offered him a job. Today he splits his time between his new role and ongoing open source contributions.

]]><![CDATA[Vinteum BDL Student Spotlight: Kyle (K-YU) ⚡]]>https://insider.btcpp.dev/p/vinteum-bdl-student-spotlight-kylehttps://insider.btcpp.dev/p/vinteum-bdl-student-spotlight-kyleTue, 17 Mar 2026 22:15:22 GMTAs a current BDL student, Kyle gave two presentations on libbitcoinkernel by Sedited. His BDL student thesis was on “Differential fuzzing of libbitcoinkernel on bitcoinfuzz”. He shares with us what he has learned about consensus, and the value of Vinteum as a community.

]]><![CDATA[Vinteum BDL Student Spotlight: Carlos Santos ⚡]]>https://insider.btcpp.dev/p/vinteum-bdl-student-spotlight-carloshttps://insider.btcpp.dev/p/vinteum-bdl-student-spotlight-carlosTue, 17 Mar 2026 14:31:32 GMTCarlos is a current student in the BDL program. He comes from a web dev PHP background, and now contributing to rust-payjoin. Carlos is an active member of the Curitiba BitDevs community, which was established by his classmate Gustavo.

]]><![CDATA[Vinteum BDL Student Spotlight: Moises Pompilio ⚡]]>https://insider.btcpp.dev/p/vinteum-bdl-student-spotlight-moiseshttps://insider.btcpp.dev/p/vinteum-bdl-student-spotlight-moisesMon, 16 Mar 2026 21:30:24 GMTMoises shares how the BDL program allowed him to transition from a full stack web dev career into open source. Working on Floresta and contributing to LDK, he credits Vinteum with opening his eyes and giving him the network that made it all possible.

]]><![CDATA[Vinteum BDL Student Spotlight: Jão Leal ⚡]]>https://insider.btcpp.dev/p/vinteum-bdl-student-spotlight-jaohttps://insider.btcpp.dev/p/vinteum-bdl-student-spotlight-jaoMon, 16 Mar 2026 13:01:35 GMT

“Vinteum is the first thing that made me feel lucky to be Brazilian.”

Jão shares the story of discovering Casa21 in his home city of São Paulo, moving in, and living there for over a year. Working on Floresta under Davidson Souza and participating in BDL, his mentors guided him toward achieving his dream of becoming an OpenSats grantee.

]]><![CDATA[Vinteum BDL Mentor Spotlight: Davidson Souza ⚡️ ]]>https://insider.btcpp.dev/p/vinteum-bdl-mentor-spotlight-davidsonhttps://insider.btcpp.dev/p/vinteum-bdl-mentor-spotlight-davidsonSat, 14 Mar 2026 19:30:43 GMTDavidson takes us back to the origins of Floresta, starting out in Summer Of Bitcoin implementing utreexo in Rust alongside Calvin.

Today he mentors in the BDL program, where current students continue his work and take it to new heights.​​​​​​​​​​​​​​​​

]]><![CDATA[Vinteum BDL Mentor Spotlight: Bruno Garcia ⚡ ]]>https://insider.btcpp.dev/p/vinteum-bdl-mentor-spotlight-brunohttps://insider.btcpp.dev/p/vinteum-bdl-mentor-spotlight-brunoFri, 13 Mar 2026 17:45:02 GMTBruno is an OpenSats grantee and Director of Engineering at Vinteum.

He shares the story of finding a bug in Taproot as his first contribution to Bitcoin Core, reflects on the earliest BDL cohort, and how he gives direction and matches students to the right projects and career paths.

Bruno talks about the importance of Vinteum as a local community and what it means to gather at the Casa21.

]]><![CDATA[Vinteum BDL Mentor Spotlight: Matthew Zipkin ⚡]]>https://insider.btcpp.dev/p/vinteum-bdl-mentor-spotlight-matthewhttps://insider.btcpp.dev/p/vinteum-bdl-mentor-spotlight-matthewThu, 12 Mar 2026 21:26:17 GMT“It’s a simulation of the Bitcoin Core development process but in a hackathon environment.”

Matthew tells us about the “quorumeum” challenge he ran for students in the Vinteum and Librería de Satoshi programs during BDL week. In the interview he shares what the role of a Bitcoin maintainer actually looks like, and how changes get merged into Bitcoin Core.

Matthew works on educational initiatives at Chaincode Labs, and is impressed by what he sees from the Latin American Bitcoin communities.

]]><![CDATA[Vinteum BDL Student Spotlight: Lucas Bailieiro ⚡]]>https://insider.btcpp.dev/p/vinteum-bdl-student-spotlight-lucashttps://insider.btcpp.dev/p/vinteum-bdl-student-spotlight-lucasWed, 11 Mar 2026 21:45:44 GMTLucas Baileiro, a BDL grad from last year’s cohort, is now an OpenSats grantee working on Stratum V2. He shares the story of being mentored by Plebhash, an opportunity that came through Vinteum.

]]><![CDATA[Vinteum BDL Mentor Spotlight: Daniela Brozzoni ⚡]]>https://insider.btcpp.dev/p/vinteum-bdl-mentor-spotlight-danielahttps://insider.btcpp.dev/p/vinteum-bdl-mentor-spotlight-danielaWed, 11 Mar 2026 13:45:51 GMTDaniela is a Bitcoin Core developer focused on PR review and peer-to-peer. She is here with B4OS to run a session with Vinteum teaching the “functional test framework” in Bitcoin Core.

She shares the importance of working in-person with fellow developers, and how she sees herself reflected in the students she teaches.

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