Enter a Bitcoin address or upload a portfolio CSV to instantly check quantum exposure risk — free, open-source, no sign-up required.
How It Works
A cryptographically-relevant quantum computer (CRQC) running Shor's algorithm could derive a Bitcoin private key from any exposed public key in hours. Addresses that have ever signed a transaction have their public key on-chain — permanently.
We classify each address by type (P2PKH, P2SH, P2WPKH, P2WSH, P2TR), look up its transaction history on-chain, and determine whether the public key has been revealed. Addresses with non-zero balance and an exposed pubkey are flagged EXPOSED.
Our risk formula — based on the framework from Ray, Gautam & Ryan (2026) — weights your exposure ratio against three CRQC timeline scenarios: Conservative (2040+), Base (2033–37), and Aggressive (2029–32). No personal data is stored.
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No account needed. Results are computed on demand and never stored.