I didn't know much about Vinteum prior to looking through this report they just published. Pretty cool work they're doing helping Brazilians get in to Bitcoin development. The report is definitely worth a look.
Our mission from day one has been to create real pathways for local talent to join the global network of Bitcoin developers.Today, we fund 6 full-time devs working on critical projects like Bitcoin Core, BDK, LND, Stratum V2, Utreexo, Floresta, and Bitcoinfuzz.Bruno Garcia (@brrrunog) redesigned Bitcoinfuzz into a modular tool that found 30+ bugs across Bitcoin and Lightning impls. In 2024-25, he made 70 commits and 800+ review comments to Bitcoin Core, improving fuzzing, tests, wallet, and P2P code.Davidson Souza (@Erik17192799) leads Floresta, full node powered by Utreexo, making Bitcoin validation possible on low-resource devices. In 2025 he authored 29 PRs, reviewed 129, advanced Utreexo BIPs, and improved performance, testing, and dev UX.Now a @bitcoindevkit maintainer, Leonardo Lima (@_oleonardolima) added native Tor to @fedimint, fixed privacy leaks, and he's now tackling complex architectural changes to BDK like extracting signer logic, expanding testing infra, and researching next-gen blockchain clients.Grantee @plebhash is pushing Stratum V2 with the SRI: production ready APIs, higher test coverage, structured releases, and support for early adopters. So far: 415+ commits and 192 PRs to SRI, plus 45 commits and 14 PRs to the Sv2 spec.After years running an LND routing node, @pins_btc now contributes directly to LND, from blinded path invoice improvements to RPC lifecycle tools, bringing practical, user-driven improvements to Lightning’s core.Less than a year after writing his first Bitcoin code, Erick Cestari (@iamflops) has implemented differential fuzzing for LN implementations with Bitcoinfuzz, found and fixed bugs in LND, LDK, CLN, Eclair, and more, often upstreaming patches himself across different languages.We also run the Bitcoin Dev Launchpad, a 12-week acceleration program for new contributors.After our first cohort, 8 fellows were selected for a 6 months period contributing to open-source. Now, as the fellowships wrap up, some have progressed to full grants from Vinteum or other organizations such as @OpenSats and the @Bitcoindevkit Foundation, while others are in the application process.Our fellows are at the start of their Bitcoin FOSS journey, using the program to ramp up, gain experience, and build their proof of work. From fuzzing and Stratum V2 to BDK, Floresta, Krux, and BTCPay, they are already making valuable early contributions to the ecosystem.Beyond grants and fellowships, we also run initiatives that strengthen the Bitcoin dev community in Brazil. These include our Mastering Seminars, the @casavinteum hackerhouse, and supporting BitDevs meetups in 6 cities, plus online events and activities in our community Discord.The report highlights the work of each supported developer, from Bitcoin Core improvements to Lightning testing and privacy tools, all contributing to a stronger and more resilient network.Looking ahead, we are expanding our programs, organizing new technical retreats, and hosting the first-ever Bitcoin Dev Summit during the @satsconf_ week in São Paulo this November.A big thank you to our team @lucasdcf @andreneves @brrrunog @edil_medeiros @_canovais @jaoNoctus and @lorenzolfm