This site is a front-end of the open-source verification software that anyone can use to validate digital documents.  The PDF document is not published on the blockchain, but rather as a fingerprint of the PDF file, which is sufficient to validate that the exact document was published by Al Akhawayn University and time-stamped by the Bitcoin’s blockchain.

To verify the authenticity of the document you can use the validation tool above to upload that PDF by clicking on "Drag 'n' drop the PDF document here, or click to select it from your device." and then selecting the PDF document on your device.