Quantum-proof Visa debit card

Quantum-proof.Tap to pay.

Spends pump.fun coinsand your Phantom or FOMO balance
Signed with ML-DSA-65NIST FIPS 204 · lattice-based

Qard spends your pump.fun coins, your Phantom balance and your FOMO balance anywhere Visa works. Every key behind it is post-quantum.

Get your QardWhy it’s quantum-proof
Powered by Works with X Money

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.

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    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.

    Ed25519secp256k1elliptic curves
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    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.

    Shor’s algorithmharvest now, decrypt later
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    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.

    ML-DSA-65NIST FIPS 204Module-LWE
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    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.

    ML-KEM-768 · FIPS 203SLH-DSA · FIPS 205
address 7xKX…9fQe = public key
Ed25519 elliptic curveclassical: safe

Seven quantum designs.

Each one is a real piece of quantum science, laser-cut, inlaid or printed into the card. Pick a design, then its colour.

Make one for anyone.

All you need is their wallet, 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.

Build your Qard.

Pick the sticker first, then the design. You connect at the end.

1Who’s it for?

2Sticker

Goes on the card as a domed badge. Choose it before you connect.

3Design

4Colour

5Quantum badges

Holo foil badges under the chip. Up to three.

6Name on the card

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.

Demonstration with live prices from DexScreener. No money moves.

Cancel
Qard Visa
•••• 2048 · FARTCOIN
Pay Corner Café$4.80
Confirm with Face ID

    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.

    0days
    00hours
    00min
    00sec
    Weekly Qard spending$2,500,000
    Buys $QARD this Friday$12,500
    Back to cardholders (1%)$25,000
    $QARDContract address drops at launch

    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.

    • Add Qard in X MoneyUse it as the debit card for payouts and top-ups.
    • Get paid on X, spend your coinsDollars from X and coins from Phantom or FOMO on one card.
    • Issue a Qard to any @handleThey claim it by signing in with X.

    X Money is rolling out in the US. Qard isn’t affiliated with X.

    Money
    Balance$1,284.50
    QARD
    Debit cardQard Visa •••• 2048
    From @maya+$40.00
    Payout to Qard−$250.00
    From @lucas+$12.50

    Under the hood.

    ML-DSA-65SignaturesNIST FIPS 204. Signs every move of your balance.
    ML-KEM-768Card linkNIST FIPS 203, hybrid with X25519 on every tap.
    SLH-DSARecoveryNIST FIPS 205. Hash-based, kept offline.
    Level 3NIST security categoryFor both ML-DSA-65 and ML-KEM-768.
    1%Back on every purchasePaid in SOL.
    0.5%Weekly $QARD buybackOf all card volume, every Friday.
    VisaNetworkApple Pay and Google Pay ready.
    7 × 22Designs × colourwaysPlus 13 quantum badges.

    Questions.