The first ever memecoin you can store safe from quantum computers.

Every Solana wallet is an Ed25519 key pair. The public key is the address, and it is visible to everyone. Ownership of a token is nothing more than the ability to produce an Ed25519 signature for that address. Shor's algorithm, run on a large enough quantum computer, computes the private key from the public key. That breaks Ed25519, and with it every token account on the chain.

Solana itself is working on this. Anza has published its plan for a post-quantum transition, and a proposal to add a Falcon signature syscall was opened in 2026 and then paused until there is more demand. In the meantime the network, the validators and every wallet still sign with Ed25519. The only working post-quantum primitive on Solana today is a hash-based vault, and until now it held SOL, not tokens.

QuantumPepe takes that primitive and applies it to a memecoin. The token itself is normal, so it trades everywhere. The vault is what makes it different.

A vault is a program-derived address. Its only seed is the hash of a Winternitz public key, which is 34 values that each sit at the top of a chain of 256 Keccak-256 hashes. The private key is the 34 starting points of those chains. Tokens sent to the vault's associated token account are held by the program, and nothing else on the chain can sign for that address.

To withdraw, the holder hashes the message that describes the withdrawal: the amount, the destination account, the account that receives the remainder and the account that receives the closed vault's rent. Each byte of that digest tells the program how far up a chain to climb. The signature reveals the chain elements at the matching heights, the program climbs the rest of the way, hashes the 34 tops together and checks that the result is the vault's own seed. Two extra chains carry a checksum, so no one can take a real signature and climb further to forge a different message.

A Winternitz key is used once. Spending it reveals part of the private key, so the program closes the vault in the same transaction and the remainder moves to a fresh vault with a fresh key. The animation below runs the real algorithm on a random message.

Q-day is the day a quantum computer breaks elliptic-curve cryptography at practical cost. Nobody knows the date. What is known is the shape of that day on Solana: every public key on the chain becomes a private key for whoever runs the machine, and tokens in ordinary wallets belong to the fastest attacker. Exchanges, market makers and holders all sign with the same broken curve.

Tokens in QuantumPepe vaults do not move, because a vault is not a key. It is a hash. The chain was already the most valuable thing a quantum computer could attack, and on that day the only coins that stay where their owners put them are the ones that never depended on the curve. That is the position QuantumPepe holders are in before anyone else on Solana.

The numbers below are read from the chain when this page loads, through public RPC endpoints, and nothing here is cached or typed in by hand. A vault is only as safe as the program that guards it, so the program must be immutable: an upgrade authority that is a normal key would be a quantum key. Check that the upgrade authority reads "none".