Qualified electronic time stamp

The qualified electronic time stamp contains data in electronic form, which links other data in electronic form with a specific time. A qualified electronic time stamp is proof of the existence of this data at a specific time. After signing the document with an electronic signature, to which a qualified electronic time stamp is attached, it is later possible to specify the exact date and time when this electronic document was signed with a qualified electronic signature.

Once an electronic document is signed with a qualified electronic signature together with a time stamp, this document can no longer be edited without the changes made being identifiable.