Inspiration Bitcoin and Nostr solved money and identity, the base layers of our society, but commerce as a second layer is still mostly captured by the State and corporate interest. Local businesses lose up to 40% of their revenues to intermediaries like centralized delivery app (12-30% take rate), banks (4% MDR) and the State (5-15% taxes).

What it does Kartapio allows merchants to publish their products to Nostr and receive orders and payments from any Nostr client that implements NIP-15.

How we built it We built it using Typescript/Svelte, the NDK library for Nostr integration, bitcoinConnect for NWC integration and Shadcn as our frontend component library. The project is a static page hosted on Cloudflare.