Card and Apple Pay
Fiat in, USDλ out, through the same vault as everything else.
The on-ramp lets you fund an account with a credit or debit card or Apple Pay, without holding any crypto first.
How it works
The on-ramp holds its own treasury of USDC. When your card payment is confirmed, it makes an ordinary deposit from that treasury into the escrow vault, naming your account — the same vault, the same deposit event, the same proof as a deposit you had sent from your own wallet. The exchange cannot tell a card deposit from any other, which is exactly what keeps the backing story simple: every USDλ is backed by USDC in the vault, including the ones bought with a card.
What the on-ramp is trusted with
Only its own treasury. A compromised on-ramp could spend its own USDC; it could not touch the vault's escrow or anyone's account. The risk it manages is a business one — a charge-back after a deposit has already been made — and it enforces per-payment, per-day and global caps for that reason.
Limits and fees
The Card tab shows the current limits and the processor's fee before you pay. The exchange charges nothing on top.