Verification

Check a certificate yourself.

Every certificate is signed with GPU Cert's Ed25519 key when it is issued. Enter its number to re-check that signature against what is stored. If a single character of the result was changed after issue, the signature stops matching.

Signature valid

This certificate was issued by GPU Cert and has not been altered since. It records a verdict of Pass for the card identified below.

Certificate No.: GPUC-45F1B54F
Device: AMD Radeon RX 6600
Verdict: Pass
Issued: Aug 13, 2026
Hardware fingerprint: d842bc356eeff0727bbb6e52d6ed949b4a4e7fe237ddd4e606146140b1b61fac

View the full certificate

A valid signature proves the certificate came from GPU Cert and has not been edited. It does not prove the person showing it to you owns that card, so check that the hardware fingerprint matches the card you are actually being sold.

To check a signature without trusting this page at all, this is GPU Cert's public key. Verify with any Ed25519 tool.

-----BEGIN PUBLIC KEY-----
MCowBQYDK2VwAyEAu3VA0Tjg1mfHZgj4ka6CTUHidW1Iga3pI2PWX2PrzvA=
-----END PUBLIC KEY-----

Also served as plain text at /.well-known/gpu-cert-key.pem.