All official electronic transcripts from the University of Amsterdam have been digitally signed and therefore contain special characteristics. When the document is viewed through Adobe Reader and Acrobat versions 9.0 or higher, it will reveal that a digital signature has been applied to the document.
Please use Adobe technology to read the transcripts. The default Mac preview application will not display the document correctly.
A document that contains a digital signature can be instantly validated. Document validity will be displayed via a blue ribbon on the notification bar across the top of the Adobe Reader. On older versions of the Adobe reader, the blue ribbon will be displayed on a pop-up screen and in the lower left corner of the frame of the application.
The blue ribbon symbol is your assurance that the digital signature is valid and authentic: the author of the document is known to the certification authority and the person or institution represented by the digital signature is true and authentic. The blue ribbon also confirms that the document has not been altered.
If you receive a notice that your document verification is invalid, it means the digital signature is not authentic, or the document has been altered. The digital signature could have been revoked for some reason, or the document could have expired. In all cases, a document with an invalid display should be rejected
If you receive an author unknown error, there are two possible meanings:
If this message is received, make sure there is proper connection to the internet.
If there is connection and the digital signature cannot be validated, reject this document.
To activate the pop-up screens in either Adobe Reader or Adobe Acrobat to view the status of a document that has a digital signature (described above), open the application first, then open the document.