Qualified trust service provider (QTSP)

A Qualified Trust Service Provider is audited and listed on the EU Trusted List, giving qualified services the strongest legal recognition under eIDAS.

A Qualified Trust Service Provider is a trust service provider that has been granted qualified status under eIDAS for one or more of its trust services. Qualified status is only awarded after a conformity assessment by an accredited auditor and a decision by the national supervisory body; the service is then listed on that member state's national trusted list, and all national trusted lists are aggregated into the EU Trusted List.

Qualified services enjoy the strongest specific legal presumptions and recognition under eIDAS. For example, a qualified electronic signature has the same legal effect as a handwritten signature across the entire EU. QTSPs may display the EU trust mark for the qualified services they are authorised to provide, giving users a recognisable indicator of qualified status. Cleverbase is a QTSP under Dutch supervision (RDI) and provides qualified certificates, qualified signatures and seals, and related services.