On 30 May 2023 at 3pm, the S/MIME certificate will be exchanged for a new one. On the test environment, the exchange will take place on 24 May 2023 at 3 pm

This certificate is used to encrypt the S/MIME message sent by the market participant to the address for the production environment - csote@csote.ote-cr.cz or for the test environment - cds@cds.sand.ote-cr.cz. The user assigns it to the contact of the addressee - CS OTE.

The S/MIME certificate for production environment can be found here and for test environment here, general information about certificates can be found here.