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Office of the University Registrar


How to Validate your CeDiploma or CeCertificate

Authenticity can be validated online one of two ways.

Validate Online

The CeDiploma or CeCertificate can be validated through Adelphi’s website using a 12-digit Certified Electronic Document ID (CeDiD*), along with the first two letters of the name as it appears on the document. The validation link will appear on the second page of the document.

a screenshot of the validation number

Digital Signature

Each CeDiploma and CeCertificate is digitally signed by CeCredential Trust. When the document is viewed through Adobe Reader or Acrobat versions 9.0 or higher, it will display a blue ribbon across the top of the document to indicate that the document has not been tampered with, and is therefore authentic.

a screenshot of the certification badge on the document


Mac Users: CeDiplomas/CeCertificates software utilizes Adobe’s secure certified PDF technology and therefore may only be viewed using the free Adobe Reader or Adobe Acrobat 9.0 or higher. The default Mac preview application will not display the document correctly.

Questions or Concerns?

If you have any further questions, or need additional help, please contact the Office of the University Registrar at Be sure to include the CeDiD number and the name of the alum as it appears on the credential.


For further information, please contact:

Office of the University Registrar
p – 516.877.3300
e –

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