Free toolsProof of creation
Check a certificate
Drop a file and its certificate to confirm they match, and see when the file was stamped.
Confirm that a file is the one a certificate covers, and when it was stamped.
- Open Proof of creation.
- Drop the file and its certificate zip, together or one after the other. Dropping a certificate switches the page to Check a certificate by itself.
- The page says whether the file matches its certificate, and if it does, the date it was stamped.
It works for certificates downloaded from a version in Aden too. Everything happens in your browser.
Checking without Aden
The certificate doesn't depend on Aden. Someone technical can verify it on their own with standard tools: the fingerprint of the file must match the one in the certificate, and the signed timestamp checks against the Belgian government's root certificate. Its fingerprint is printed on the certificate.
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