Bitcoin that spends like cash.
No bank. Your money lives in bitcoin, shows up as real money, and pays anywhere cards work — through a card that presents a fresh number for every payment.
Your wallet, not our vault
Wisp connects to your own Lightning wallet through a budget-capped, revocable grant. We can request a payment you allowed — nothing more. Your keys never touch us.
One card, endless numbers
Your Wisp Card never goes anywhere. Every payment presents a fresh number that dies after one use — merchants never learn who you are, and a leaked number is already worthless.
Any currency
Your balance reads as real money — dollars, euros, pounds — and converts only at the moment you spend.
How it works
Bitcoin can’t settle at a checkout — a block takes ten minutes, a card authorization needs two seconds. Lightning can. That’s the whole trick.
Hold bitcoin
Fund your Lightning wallet. It stays yours — Wisp holds a spending allowance you set, not your coins.
Pay with your Wisp Card
At any checkout your card presents a number minted for that payment alone. Copy it in, pay like normal.
The number burns
At the swipe, sats move from your wallet at the live rate and that number is gone forever. Your card lives on. The merchant saw a card, never you.
One card. A new number every payment.
Ghost is your default Wisp Card. Make more for whatever deserves its own — subscriptions, travel, one shop you don’t quite trust — each minting its own one-time numbers.
Anonymous to merchants.
Accountable where it counts.
Privacy from the people you buy from is a feature. Pretending the card networks don’t exist is not.
One identity check, once
Cards that work everywhere are issued by a licensed partner, and that requires a single KYC check at signup. After that, no merchant, no tracker, no data broker ever sees your name again.
Non-custodial by design
The connection to your wallet is a budget-limited grant you can revoke any time. Wisp can ask your wallet to pay — it cannot move your coins.
Spend limits before sats move
Per-payment and daily limits you set yourself are enforced before anything is requested from your wallet, and every movement lands in a double-entry ledger.
Encrypted at rest
Wallet credentials are sealed with AES-256-GCM. Card numbers are shown to you once and never stored on our side.