It is not mandatory to perform client authentication using a digital certificate for the creation/validation of the Time Stamp. However, what is mandatory is to have requested registration for the service, previously, to use it. You can consult the procedure for requesting registration for the validator and Time Stamp service by accessing the Services route of the Consortium website AOC- Services – Valid – once in this section, we go down to “Services that are part of the Valid” and select “Validador”-Learn more

You will find the following registration form:

Registration form for the Validador service and the Time Stamp