Article 12 of the Regulation (EU) 2019/788 of the European Parliament and of the Council of 17 April 2019 on the European citizens' initiative allocates the verification and certification of statements of support to a competent authority of each Member State.

Article 20 describes how one or more competent authorities shall be designated by the Member States, and how the names and addresses shall be made available in the Online register for European citizens' initiatives.