Sunlit. Workshop
Signature check

Check the signature.

Upload a certificate PDF. We’ll confirm the digital signature is intact and that it was made under the Sunlit Bytes CA.

PAdES signature

Upload a certificate

This checks the file, not the object. A live chip tap is still the only proof that the work is present.

A pass means the file still matches the signature written into it, and that signature chains to the Sunlit Bytes CA. It does not prove the physical work is present.

What this proves

A valid signature means the PDF hasn’t been altered since it left the workshop. It does not prove the physical work is present.

Looking for another mark? Back to verify · Timestamp check