Here's a demo of a decentralised digital voucher system (still WIP) leveraging the Cashu and Nostr open protocols to issue, verify, send, and receive digital vouchers (gift cards). I started this project with the goal of giving anyone with a Nostr key pair the ability to create and sell vouchers to their customers, for whatever currency they choose. The voucher is serialised metadata, digitally signed and stored in a Cashu token envelope. It's issued with a negligible sat amount (e.g., 10 sat) paid by the merchant and stored in a NIP-60 compliant wallet. In the short demo, I play the role of a customer buying a 10k FCFA (fiat) voucher from an existing merchant, and sending 6k to someone else's wallet. The merchant receives the 10k payment (in this case, the sat equivalent) and automatically issues the token (the voucher). I envision many more use cases to emerge. Feedback welcome! #asknostr #cashu #nostr

Ich war heute wieder in Darmstadt, zum ersten mal nach über 25 Jahren. Da ganz oben rechts wohnte ich.

✅

Woodland Lake — View of Forty Hall Loop From Enfield Wash.

My cashu lib implementation in Java, now public, is part of an ecosystem of multiple projects used primarily for issuing vouchers on nostr.

GitHub

GitHub - 398ja/cashu-lib: A Java library providing essential components for developing cashu mint and wallet applications.

A Java library providing essential components for developing cashu mint and wallet applications. - 398ja/cashu-lib

Couvrez-moi ce sein, que je ne saurais voir. 🫣 View quoted note →

Pidgeon'ed

Faux rouge

NO COMMENT

Cashu e-vouchers on nostr: Fiat‑denominated vouchers as cashu tokens. Create and send instantly to any nostr npub. Hopefully soon... (tm)

The gift that keeps on giving. That's my third batch of beet kvass, it's thinner, bubblier, and tastes even better! #fermentation

London tourists now have to finance the Ukraine war with “a modest tourist levy” 😅

London on brink of introducing $23-a-night tourist tax

One of Australians' favourite destinations is poised to become the next major city to introduce a tax on tourists.

Oh No! 😔😅