(31)In order to enable supervision, offerors and persons seeking admission to trading of crypto-assets other than asset-referenced tokens or e-money tokens should, before making any offer to the public of crypto-assets in the Union or before those crypto-assets are admitted to trading, notify their crypto-asset white paper and, upon request of the competent authority, their marketing communications, to the competent authority of the Member State where they have their registered office or, where they have no registered office in the Union, of the Member State where they have a branch. Offerors that are established in a third country should notify their crypto-asset white paper and, upon request of the competent authority, their marketing communications, to the competent authority of the Member State where they intend to offer the crypto-assets.