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Exposure check

Is your money behind a public key?

If the math behind wallet signatures weakens, through quantum computers or AI-accelerated math, coins behind a public key are the first within reach. Paste a wallet to see how much sits where, and the one calm step that fits.

Check a wallet

Addresses of Bitcoin, Ethereum or Solana, one per line, or a Bitcoin wallet's xpub, ypub or zpub.

Up to 20 addresses at a time, of any of the three chains.

Read-only. Nothing is saved or logged, and no wallet or signature is asked for.

What the answer can be

  • Key public

    The public key is on chain, or is the address itself.

  • Key hidden

    The key is still behind a hash: it shows only when the address signs.

  • No key

    A contract or a program controls the address: there is no private key.

Why the key matters

Bitcoin, Ethereum and Solana sign with elliptic curves (ECDSA and Ed25519). Their safety rests on one assumption: that nobody can work back from a public key to its private key. If that assumption weakens, a key that is already public is the first one within reach.

What we keep

Nothing. What you paste reaches our server in the body of a request, never in a link. Lookups go out from our server, so your own connection never touches them. No database, no logs, no analytics, no wallet, no signature.

Dollars, from the chain

Prices come from Chainlink's feeds on Ethereum; USDC and USDT count at a dollar. Coins and the major stablecoins are counted, not other tokens or NFTs.