QUANTUM 
Y2K was
a drill.
Quantum computers are coming for the keys that guard every wallet. Quantum Vault puts your stock tokens behind a second key, built for after.
Every wallet signs with the same kind of curve.
Since 2009, crypto wallets have signed with 256-bit elliptic curves. Shor's algorithm, run on a large enough quantum computer, turns a public key back into its private key. Every address that has ever sent a transaction has already published its public key.
logical qubits to break a 256-bit elliptic curve with Shor's algorithm.
of runtime, on fewer than half a million physical qubits.
Google Quantum AI, with Justin Drake and Dan Boneh. Read the paper
Your stock tokens sit behind one of those keys.
Two keys. One of them is built for after.
A vault of your own
Move your stock tokens into a Vault that answers only to you. Nothing is pooled, and the design gives us no key to it.
Make your Q-Key
Your browser creates a Falcon-512 key: the lattice signature NIST selected for its post-quantum standard. Back it up like a seed phrase. It never leaves your device.
Both keys, every time
Every withdrawal needs your wallet and your Q-Key. The contract checks the Falcon signature on chain before a single share moves.
Lose your Q-Key?
Your wallet alone can open an exit. It waits 14 days.
Someone else opened it?
Cancel it with your Q-Key. A stolen wallet key gets them nothing.
Two keys beat one, today too.
A phished wallet can't empty a Vault. Quantum or not.
Nobody can claim it. Yet.
The Pot is a public bounty on Robinhood Chain. It pays whoever can sign for a key nobody holds: a point on the curve derived from a public phrase, with no private key in existence. Claiming it takes breaking the cryptography every wallet uses.
The day someone claims it, every Vault seals itself. Wallet-only exits switch off, and only Q-Keys move funds.
Until someone claims it, we can withdraw the Pot only after 30 days of public notice on this page.
Cents, not dollars.
On 8 October 2026 we ran a Falcon-512 verifier against live Robinhood Chain mainnet state. A valid signature passed; a tampered one failed. The prices below move with gas and ETH.
Big signatures, no surcharge. Robinhood Chain charges nothing for L1 data, so a 2.4 KB key and signature cost no more than a short one.
Audit first. The verifier is ZKNOX's open-source ETHFALCON (MIT). It is unaudited today; an independent audit comes before the first deposit.
What it guards. What it can't.
Guards
- Stock tokens inside your Vault.
- Every withdrawal: two keys, checked on chain.
- A stolen wallet key: it can't move funds alone.
- Q-Day: wallet keys stop, Q-Keys keep working.
Can't guard
- Robinhood Chain's own keys: the sequencer, bridge and upgrades are Robinhood's.
- The stock token contracts, which their issuer controls.
- Anything you keep outside the Vault.
- Losing both keys.
Questions.
Is Quantum Vault live?
Not yet. The contracts are in development and will be audited before the first deposit. No token has launched; any token trading today is not ours.
Is it quantum-proof?
Nothing is proof against the future. Falcon-512 is a lattice signature selected by NIST for standardization, and the Vault checks it on chain for every withdrawal.
Why Robinhood Chain?
Stock tokens live here, and checking a post-quantum signature costs cents.
When is Q-Day?
Nobody knows. The estimates keep moving closer: the March 2026 paper above puts a break of today's curves at under 1,200 logical qubits. A Vault set up early is ready either way.
Who holds my stocks?
You do. Each Vault answers to your two keys, and the design gives us neither.