Qedra

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Quantum Guardian · free

Is your wallet quantum-exposed?

Check whether a wallet has revealed its public key on Robinhood Chain, watch your wallets, and move to a fresh address when you choose to — signed by you, step by step.

Why this matters (and why it isn't urgent)

Your address is a hash of your The public half of your wallet's key pair. Your address is a hash of it. It stays hidden until you sign something — every transaction you send reveals it on-chain.. Signing any transaction reveals that key. A large future quantum computer running A quantum algorithm (1994) that can factor numbers and solve elliptic-curve problems exponentially faster than known classical methods — in theory, enough to recover a private key from a public key. It needs millions of high-quality qubits; today's machines have far fewer. could work backwards from a public key to the private key.

No computer can do this today, and nobody knows when one will (The hypothetical day a quantum computer becomes powerful enough to break today's wallet signatures. Nobody knows when — estimates range from years to decades — and no machine is close today.). Wallets that have never signed keep their key hidden. This is preparation, not panic.

Your address only shows a hash of your public key. The first time you sign a transaction, the public key itself goes on-chain — that's what a future quantum computer would need.

Quick check

Any Robinhood Chain address — a wallet or a contract. Nothing is saved.

What the result means

  • Key hidden — the wallet has never signed a transaction. Only a hash of its The public half of your wallet's key pair. Your address is a hash of it. It stays hidden until you sign something — every transaction you send reveals it on-chain. is on-chain.
  • Key exposed · little at stake — it has signed, but holds almost no ETH (check its tokens too).
  • Key exposed · holds funds — it has signed and still holds ETH. Moving to a fresh address is the cautious choice.
  • Contracts — have no key of their own; we check the keys that control them (owner or multisig signers).

Preparation, not panic: no quantum computer today can break a wallet key. When The hypothetical day a quantum computer becomes powerful enough to break today's wallet signatures. Nobody knows when — estimates range from years to decades — and no machine is close today. comes is unknown.

Your watch list

The Guardian re-checks these wallets every 10 minutes while the service runs, and alerts you when a key gets exposed or funds land on an exposed wallet. The list is tied to this browser.

Alerts

Move to a fresh address

You sign every step. Nothing happens automatically.
Qedra never asks for your seed phrase or private key.

Transactions can't be undone. Double-check the new address character by character before you send anything.

  1. Create a brand-new account in your wallet app

    Make a new account (most wallets have "Add account"). Don't send any transaction from it — receiving is fine. Its key stays hidden until it signs something.

  2. Paste the new address and check it
  3. Connect the exposed wallet on Robinhood Chain

    No browser wallet found. Open this page in a browser with your wallet installed.

  4. Move your ETH

    Sends your whole balance minus the network fee (with a 20% safety buffer, so the transaction can't fail for lack of gas).

  5. Move tokens, one at a time

    Do this before moving all your ETH if you need ETH for the fees. Each token is a separate transaction.

Sending unlocks once steps 1–3 are complete and the checkbox is ticked.