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Verify

Check License Validity

Paste your proof.json or upload the file. Proof verification runs entirely in your browser — the file never leaves the page. The optional Query Chain tab calls a public Mina node.

📄
Drop proof.json here
or click to browse

Verifying…

Connecting to Mina and verifying the license proof.

Fetching on-chain state
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Verifying proof
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✓
Valid License
zk proof verified successfully using Mina verification key
zkApp
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Network
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Expires (~)
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Days Remaining
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Purchase tx
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Renew License
⚠️
License Expired
The proof is cryptographically valid, but the license period has ended. If you renew within 7 days of expiry, the new term extends from the original expiry — otherwise from today.
zkApp
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Network
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Expired (~)
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Time Since Expiry
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Renew Now
✗
Invalid Proof
The zk proof does not match the app's verification key.
  • The proof.json was generated for a different app or network
  • The file was corrupted or manually edited
  • The proof was produced by a different version of the zkApp
Buy a Valid License

How verification works

🔐 Client-side only. The verification key is compiled into this page. Your proof.json never leaves your browser.

⛓ Chain query (optional). If you don't have your proof.json, we can query the zkApp's on-chain state by wallet address via Mina's GraphQL API.

📐 What the ZK circuit checks. The proof cryptographically asserts: "there exists a valid purchase transaction for this app, tier, and expiry timestamp" — without revealing the buyer's wallet address in the proof output.