Quantum-proof.
Tap to pay.
Qard spends your pump.fun coins, your Phantom balance and your FOMO balance anywhere Visa works. Every key behind it is post-quantum.
Why it's quantum-proof.
Crypto cards and wallets today trust elliptic curves. Quantum computers are being built to break exactly that. Qard doesn't wait for the day it happens.
Your address is a public key.
On Solana, every address is an Ed25519 public key, out in the open from the first transaction. Today that's safe, because turning it back into a private key would take a normal computer longer than the age of the universe.
Shor's algorithm undoes that.
A large enough quantum computer running Shor's algorithm solves the elliptic-curve problem in hours. Every wallet and card that signs with elliptic curves is exposed the day it exists, and data recorded today can be cracked later.
Qard signs with lattices.
Your balance sits behind ML-DSA-65, the NIST signature standard built on Module-LWE: find a short vector in a noisy lattice with thousands of dimensions. No known quantum algorithm does that fast.
Every tap is wrapped twice.
Card data travels under hybrid X25519 + ML-KEM-768, the same handshake Chrome and Cloudflare already run. Recovery uses SLH-DSA, a hash-based key you keep offline.
Seven quantum designs.
Each one is a real piece of quantum science, drawn into the card. Pick a design, then its colour.
Make one for anyone.
All you need is their wallet, their .sol name, their FOMO username or their X handle. They claim the card with the same account you used. No sign-up on their side before that.
Try toly.sol, fomo:@degen or @elonmusk. Wallets are checked on Solana RPC.
How claiming works
Build your Qard.
Pick the sticker first, then the design. You connect at the end.
Who's it for?
They claim it with this account.
Sticker
Goes on the card as a domed badge. Choose it before you connect.
Design
Colour
Quantum badges
Foil badges under the chip. Up to three.
Name on the card
Drag to turn
Your Qard
Spend what you hold.
Pay with any coin in your Phantom or FOMO balance. Qard sells just enough at checkout, pays the merchant in dollars and gives you 1% back.
Live prices from Dexscreener, refreshed every minute.
Every swipe buys $QARD.
0.5% of everything spent with Qard goes into a weekly buyback of $QARD. It runs every Friday at 16:00 UTC, on-chain, and every buy is public. You also get 1% back in SOL on every purchase.
Works with X Money.
X Money pays out over Visa, and Qard is a Visa card. Add it as your debit card in X Money and money people send you on X lands on your Qard.
Use it as the debit card for payouts and top-ups.
Dollars from X and coins from Phantom or FOMO on one card.
They claim it by signing in with X.
X Money is rolling out in the US. Qard isn't affiliated with X.
Under the hood.
NIST FIPS 204. Signs every move of your balance.
NIST FIPS 203, hybrid with X25519 on every tap.
NIST FIPS 205. Hash-based, kept offline.
For both ML-DSA-65 and ML-KEM-768.
Paid in SOL.
Of all card volume, every Friday.
Apple Pay and Google Pay ready.
Plus 13 quantum badges.
Questions.
Can a quantum computer break my wallet today?
No. Machines that big don't exist yet. But your Solana address already shows your public key, and anything recorded today can be decrypted later. Qard moves to post-quantum keys before that day, not after.
What does post-quantum mean here?
Cryptography built on maths that quantum computers aren't known to speed up. Qard uses the three standards NIST published in 2024: ML-DSA for signatures, ML-KEM for key exchange and SLH-DSA for recovery.
Which coins can I spend?
Any coin in your Phantom balance with a live market, plus your FOMO dollar balance. Qard sells only what the purchase needs, at checkout.
Do I need a wallet to look around?
No. Everything here, including the card builder and the spend screen, works without one. Reserving a card needs Phantom or a FOMO account.