If you're on GitHub please give us a ⭐️ it will help us reach more potential contributors, users and devs! Thanks 🙏

Embedded Swift supporting untyped throws might just be what we need to get Swift Bitcoin into something like the ESP-32 (RISC-V) – we actually tried to make all our throws typed but found impedance issue against many core Swift APIs that are not built for this.

Embedded Swift is a subset of Swift built for tiny, constrained hardware, with far smaller binaries while keeping the language you already know. Swift 6.4 brings it closer to full Swift than ever, supporting "any" types, untyped throws, and metatypes. swift.org/blog/embedded-swif…

In the wake of the @COLDCARDwallet scandal we welcome everyone and their LLMs to audit/fix our code… particularly around seed generation on iOS/macOS/Android/Linux/Windows/WASM and Embedded. Thank you! github.com/swift-bitcoin/swi…

Linux static binaries require no runtime dependencies and run on all distros. ARM and x86 architectures supported.

New quarterly progress report published (OpenSats commitment) Swift Bitcoin is officially at par with Core in terms of mempool policy, consensus and general peer-to-peer behavior including most DDoS mitigations. swiftbitcoin.org/post/2026-0….

Follow us on Pubky! pubky.app/profile/g8hmr7teop…

BIP54: “Consensus Cleanup” was just advanced to Complete: github.com/bitcoin/bips/blob… Let’s do this!

Happy #BitcoinPizzaDay to everyone who celebrates!🍕🍕🍕

All bitcoin policy conveniently rolled into a single PR 😅 github.com/swift-bitcoin/swi…

Good Morning Swifters and Bitcoiners! If you own a #GitHub account please give Swift Bitcoin a ⭐️! It helps us reach potential users and contributors. Thanks! 🙏 github.com/swift-bitcoin/swi…

SEVENTEENTH WAVE OF BITCOIN GRANTS Three first time grants: •JoinMarket NG •rawBit •Specter DIY Six grant renewals: •Bitcoin Dev Launchpad •Bitcoin Jungle •Bitcoin Safe •Bitshala •Odudex •Payjoin opensats.org/blog/seventeent…

5 GRANTS TO STRENGTHEN BITCOIN DEVELOPMENT This round focuses on improving the long-term maintainability, safety, and privacy of the project, from build system modernization and release testing coordination to peer-to-peer network security research. opensats.org/blog/five-grant…

Swift Bitcoin Tutorials are here! 🎓 swiftbitcoin.org/docs/tutori…

OpenSats 2025 Year in Review: opensats.org/blog/2025-year-…

SIXTEENTH WAVE OF BITCOIN GRANTS The projects in this wave include self-custodial wallets, DIY signing hardware and installer software, alternative node and mining software, and education programs that help new developers become contributors. opensats.org/blog/sixteenth-…

OpenSats has sent $32,434,939 worth of bitcoin to 371 open source contributors in 40+ countries.

Your favorite C library, now with Swift superpowers. 🦸 New post: how to transform C APIs into idiomatic Swift, with enums, automatic reference counting, and argument-labeled methods. Best of all: no header changes needed, thanks to API notes! 🥳 swift.org/blog/improving-usa…

Running bitcoin

Hi Bitcoiners – it’s Fran again. 17 years ago today, Hal Finney posted two words that changed everything: “Running bitcoin.” Since then, thousands of bitcoiners across 50+ countries have run in his name. The 5th #RunningBitcoinChallenge starts NOW. ⚡️🏃‍♂️ Are you in? 👉 runningbitcoin.us Hal believed code could set humanity free. He was an avid runner, until progression of his ALS made it impossible. The 2026 Running Bitcoin Challenge runs for 21 days starting today, the anniversary of his legendary tweet. 🌍 Run or walk 21 km / 13.1 mi– every step contributes to ALS research. 📷runningbitcoin.us This year’s challenge is backed by giants: ⚡️ @HRF – defending human freedom with Bitcoin ⚡️ @blocks – @jack’s company building on open money for the world Hal would be grateful and proud of your support. Thank you! We are also being supported by @strike - thank you! I’m also proud to highlight HRF’s Finney Freedom Prize, honoring work at the intersection of Bitcoin, freedom, and privacy. Congratulations to the 3rd halving era’s winner, Andreas M. Antonopoulos - who educated millions on Bitcoin and its potential for humanity. Hal would be proud of your work. 🏆 I’m Fran Finney (@franfinney), Hal’s wife. Every January, I watch this community show up – running, walking, donating, sharing. You keep Hal’s spirit alive. That means everything. 💛 Find me on Nostr: 🔑 npub14fkfcx9j0494g8zejfdxsr9t8raxt9n8vzkz6l5w4ef0gjysh4dqcsmkgv Where does your donation go? ✅ 80%+ goes DIRECTLY to ALS research ✅ They accept Bitcoin Every sat, every step, every share → closer to a cure. Sign up 👉runningbitcoin.us Follow @RunningBTC21k or on Nostr: npub17hzf5v2l9aw29h4l9q330rkd4typnwkx80ksy6cnfuhzr33xvsaqucdscd 21 days. 21 km. 1 legend. The 5th #RunningBitcoinChallenge is LIVE. Run. Walk. Donate. Share. Tag a friend who needs to join.👇 Hal ran toward the future even when his body wouldn’t let him. Join us in honoring him – and feel free to share a picture from your run. 👉runningbitcoin.us

January 3, 2026 - the 17th anniversary of the Bitcoin Genesis Block. Happy birthday, Bitcoin.