The certificate, sent to the participant's email, is a digital document that contains in itself all the relevant information about the event, this is, it doesn't have to be compared with any data base of the issuing institution, in this case of the LabCDMX.
The next things assure the validity of the certificate:
1. Through encrypting the certificate, an alphanumeric value is obtained.
2. A digital transaction between the issuer of the certificate and the receiver contains the value obtained in the previous steep.
3. This digital transaction is stored in public records, nevertheless this records do not contain private information of the participants.
4. Once the participant have its certificate, it is encrypted and the alphanumeric value obtained should be the same that was previously registered in the transaction.