BitNotes wallet lets users print Cashu ecash on paper
Crypto Briefing reports that developer Calle released BitNotes, a free multi-mint Cashu wallet that turns ecash into paper notes verifiable offline.
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what happened
According to Crypto Briefing, a pseudonymous developer known as Calle unveiled BitNotes on October 22, 2026. The free, open-source app is a multi-mint wallet for Cashu, an ecash system built on Bitcoin, and it can produce physical paper notes that stand in for ecash tokens.
These notes can be checked offline against the issuing mint's signature, and they are designed to reveal tampering. Redeeming them into digital ecash happens later. The wallet also handles ordinary transfers, Lightning payments, on-chain deposits through Ark, and a bridge for Mobile Money in Rwandan francs.
Spreading funds across several independent mints, such as 28MINT, is meant to lower reliance on a single operator. For now the app runs only on Android and macOS, its code is released under MIT and Apache licenses, and no external security audit or user figures have been published.
why it matters
The project is still at an early stage, and coverage so far relies mainly on Calle's own announcement and the Cashu community. Paper ecash carries the usual cash risks of loss, damage and theft, and users must still trust the mints. The effect on markets is negligible, but watch for audits, more mints and wider platform support.
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sources
- Calle launches BitNotes, a multi-mint Cashu wallet that prints ecash on paper — Crypto Briefing, 23 October 2026 at 00:29 UTC
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