Validation of documents Check up the validity of electronically signed documents. Upload file Check * You have uploaded a detached signed file. Please upload the contents file, which is signed with it in order for the check to become possible. Upload file Check Level of validation of the signed document: Highest level of document signing allowed Base level of electronic signature Base level of signature, including Time stamp Base level of signature including Time stamp and attributes (CRL and OCSP) Base level of including (Time stamp, CRL and OCSP) and periodically updated certified time * By default, the document is validated at the highest acceptable level. If you need lower level validation, please select from the drop-down menu.