The Capital Markets Board of Türkiye has published two communiqués in the Official Gazette that set out the secondary regulatory framework for crypto asset service providers under the Capital Markets Law, following legislative changes that brought the sector within the Board’s regulatory and supervisory remit. The measures entered into force upon publication. Communiqué III-35/B.1 establishes rules on incorporation, commencement of operations, ongoing activities and the suspension of activities, as well as requirements relating to founders and shareholders (including share transfers), management and organisational structure. It also covers internal audit, internal control and risk management systems, information systems and technological infrastructure, document and record-keeping systems, and requirements for independent audit and proof-of-reserves audit. Communiqué III-35/B.2 sets rules on the services and activities crypto asset service providers may offer, the operation of crypto asset trading environments, custody and transfer of crypto assets, the listing of crypto assets on platforms, and capital adequacy.