cash in / cash out · the card holds the token, the service moves money
Demo · no real funds
Cash in: pay via PayPal / USDC → the service mints a token and deposits it onto the card.
Cash out: the card's token is extracted and presented → the service verifies the issuer signature, pays out via PayPal / USDC, and consumes the token.
Card is simulated in-browser; settlement is demo only.
CoinCard reserve (stablecoin backing)
reserve — · outstanding — · unallocated —
Cash in (fund → load card)
Cash out (take token from card → pay)
Runs on the card: VERIFY_PIN → PERMIT_TRANSFER → INIT_SESSION → EXTRACT_TOKEN, then sends the 64-byte token to /api/redeem.