Article 4

the trust service provider used by the creator of the seal is established in the United Kingdom or the EU, and

the public sector body in question is offered seal validation possibilities in accordance with paragraph 2, suitable, where possible, for automated processing.

allow F2the public sector body to validate the received electronic seals online, free of charge and in a way that is understandable for non-native speakers;

be indicated in the sealed document, in the electronic seal or in the electronic document container

confirm the validity of an advanced electronic seal provided that:

1. (1)

   the certificate that supports the advanced electronic seal was valid at the time of sealing, and when the advanced electronic seal is supported by a qualified certificate, the qualified certificate F3met, at the time of sealing, all necessary requirements for qualified status;

2. (2)

   the seal validation data corresponds to the data provided to the relying party;

3. (3)

   the unique set of data representing the creator of the seal is correctly provided to the relying party;

4. (4)

   the use of any pseudonym is clearly indicated to the relying party if a pseudonym was used at the time of sealing;

5. (5)

   when the advanced electronic seal is created by a qualified electronic seal creation device, the use of any such device is clearly indicated to the relying party;

6. (6)

   the integrity of the sealed data has not been compromised;

7. (7)

   the requirements provided for in Article 36 of Regulation (EU) No 910/2014 F4, or the corresponding provision of the equivalent EU law (within the meaning given by Article 3(42) of that Regulation), were met at the time of sealing;

8. (8)

   the system used for validating the advanced electronic seal provides to the relying party the correct result of the validation process and allows the relying party to detect any security relevant issues.