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Passport StampsHow to Verify StampsProof of Clean Hands Stamp

Proof of Clean Hands Stamp

The Proof of Clean Hands Stamp proves that you are not on any international sanction lists and are not a politically exposed person (PEP), using zero-knowledge proofs to preserve your privacy.

Quick Facts

DetailValue
Cost~$5
Time~10 minutes
PrivacyZero-knowledge proofs
Stamp Validity90 days
Credential Validity1 year
Supported NetworksEthereum, Optimism, Avalanche, Base

Requirements

  • ~$5 for the verification fee
  • A wallet connected to your Passport

What It Proves

This stamp cryptographically verifies that you:

  • Are not on any international sanction lists
  • Are not a politically exposed person (PEP)

All verification is done using zero-knowledge proofs, meaning the system confirms compliance without accessing or storing your personal data.

Step-by-Step Verification

  1. Navigate to the Passport App and connect your wallet.
  2. Select the Proof of Clean Hands Stamp.
  3. Follow the verification flow to generate a zero-knowledge proof of your compliance status.
  4. Pay the ~$5 verification fee.
  5. Once verified, the credential is issued and the stamp is added to your Passport.

Validity and Renewal

  • The stamp on your Passport is valid for 90 days before it must be re-verified.
  • The underlying credential is valid for 1 year.
  • To renew, repeat the verification process and pay the fee again.

Supported Networks

The credential is recognized across:

  • Ethereum
  • Optimism
  • Avalanche
  • Base

Troubleshooting

  • Verification failed — If the verification process fails, ensure your wallet is properly connected and try again.
  • Stamp expired — Re-verify through the same process every 90 days to maintain an active stamp.
  • Fee payment issue — Ensure you have sufficient funds on the network used for the verification fee.
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