Verify

Check License Validity

Paste your proof.json or upload the file. Verification runs entirely in your browser — nothing is sent to our servers.

📄
Drop proof.json here
or click to browse
Try example:

Parsing proof…

Running the Mina verification key against the proof locally.

✓
Valid License
ZK proof verified successfully using Mina verification key
App
ExampleApp
Tier
Pro
Expires
12 Jun 2027
Days Remaining
365 days
Network
Mina Mainnet
Verified
Client-side ✓
Verification Key
B62qr9mXVmtLopR8bKDnDq7LRQ4HkVA7kHsNvQ3...7kHsN
Proof (truncated)
KChiAArBmF...x9mZpQ==
Renew License
⚠️
License Expired
The proof is cryptographically valid, but the license period has ended.
App
ExampleApp
Tier
Pro
Expired On
1 Jan 2026
Days Since Expiry
163 days
Renew Now — 5 MINA
✗
Invalid Proof
The ZK proof does not match the ExampleApp verification key.

Possible reasons:

  • 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.