Building an Open Source Payment System
summary
A token‑based payment system is built and shown working end‑to‑end: wallets withdraw fiat tokens from an exchange via bank transfer (demo shows a €5 withdrawal and a 20‑peso tip), pay merchants over QR/HTTP 402 flows, and merchants claim deposits from the exchange. It uses GNU Taler with an Android wallet, integrates a cash‑validator → QR tipping flow for arcade machines, enforces age‑restricted coins, and avoids blockchains by using blind signatures; the live demo at demo.taler.net demonstrates the whole loop.
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chapters (9)
- 0:00Start
- 2:08Alice problem
- 4:33GNU Taler
- 5:01Taler difference
- 6:31Taler resources
- 7:00Taler components
- 9:59Taler demo
- 16:30Taler Arcade
- 20:38Final comments
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