; and (II) the specific reason for such deregistration provided by the Commission under clause (i)(II). (2) Large social media platforms (A) Registration Not later than 30 days after the effective date of this Act (in the case of a service that is a large social media platform on such effective date) or not later than 30 days after a service becomes a large social media platform (in the case of a service that becomes a large social media platform after such effective date), the large social media platform provider of the platform shall register the platform with the Commission by submitting to the Commission a statement indicating that the platform is a large social media platform. (B) Deregistration by Commission The Commission shall establish a process to deregister a service registered under subparagraph (A) if the service is no longer a large social media platform. The Commission shall permit the person who provides, manages, operates, or controls a service registered under subparagraph (A) to submit to the Commission information indicating that the service is no longer a large social media platform. (3) Public availability of registration lists The Commission shall make publicly available on the internet website of the Commission a list of the third-party safety software providers registered under paragraph (1), a list of the large social media platforms registered under paragraph (2), and a list of the third-party safety software providers deregistered by the Commission under paragraph (1)(C). (c) Authentication Not later than 180 days after the date of the enactment of this Act, the Commission shall issue guidance to facilitate the ability of a third-party safety software provider to obtain user data or access under subsection (a) in a manner that ensures that a request for user data or access on behalf of a child is a verifiable request. (d) Guidance and consumer education The Commission shall— (1) not later than 180 days after the date of the enactment of this Act, issue guidance for large social media