Happy to share that @Minibits has been selected for continued grant support from @OpenSats 🎉 Grateful for the trust and excited to keep pushing open-source ecash R&D for #Bitcoin forward!

Minibits now adds support for NFC payments on iOS 🚀 Wallets on iPhones can receive ecash or read and pay payment requests over NFC from wallets running on android devices. Simplicity of #cashu ecash in action. https://github.com/user-attachments/assets/448c9ca9-6863-47e6-a598-f5628ba9df32

With the New year, Minibits mint rotated to the new keyset with id starting 001... For most wallets, handling keyset change should be automatic and should not cause any issues. Former keyset, with id starting 005... is now not active, but stays available for ecash swaps or melts - that allows wallets to rotate to the new one over time seamlessly. In case you'd need to recover some ecash generated with previous keyset, make sure to set the keyset id to recover from to the previous 005... value as well (if using Minibits wallet) Reason for this change is to be able to handle the database growth: there is more then 2.5m of issued ecash notes and 2.2m of spent ones, that the mint needs to keep to prevent double spend. For now, I've implemented mutiple database optimizations to keep it performing + have realtime backups in place, but to be able to reduce the db size in the future, I'll rotate to new keysets at least once per year. Enjoy the winter as I do!

New Minibits with Tap-to-pay is live on Android! - Reads a cashu requests or lightning invoices via NFC and pays instantly - Shares invoices or cashu tokens (emulating NFC host) so you can even tap two Minibits wallets Prototype intended for testing w POS devices, that have their NFC antennas on front side but nevertheless very funny to play with 🚀 ! Very early, test with few sats only. https://github.com/user-attachments/assets/d52700af-469b-42d7-a35b-1e11e043ef3f