Dovizir

Guided demo

Offline payment, on-chain settlement, and a double-spend conviction — click through it

Online
  1. 1Carve offline cash (online): lock 15,000 IOU into notes
  2. 2Go offline (airplane mode on)
  3. 3Buyer pays seller1 by QR — verified offline
  4. 4Back online
  5. 5Reconcile seller1 — settles on-chain
  6. 6Buyer double-spends the SAME note to seller2 (offline)
  7. 7Reconcile seller2 — the chain convicts the double-spend