No account needed. CrimeTime recomputes the certificate’s SHA-256 fingerprint from its own stored data and tells you whether the document in front of you has been altered.
Scan the certificate’s QR code
Or open a certificate’s verify page by link
Where to find the link
Scan the QR codeprinted on the certificate. It opens this site directly on that certificate’s verify page.
Or type the verification link printed beneath the QR code, or paste it into the box above. The long identifier in the link is unique to that certificate.
Then compare the fingerprint shown on the verify page, character for character, with the one printed on the document in front of you.