; (B) recordkeeping; (C) capital, margin, and other financial resources; (D) reporting; (E) business conduct; (F) documentation; and (G) such other matters as the Commission determines to be necessary. (4) Prohibition (A) In general Registration as a crypto asset exchange shall not permit a trading facility to offer any contract of sale of a commodity for future delivery, option, or swap for trading without also being registered as a designated contract market or swap execution facility. (B) Proprietary trading A registered crypto asset exchange shall not conduct proprietary trading, but may conduct market making under standards established by the Commission by rule. (d) Core principles for crypto asset exchanges (1) Compliance with core principles (A) In general To be registered, and maintain registration, as a crypto asset exchange, the registered crypto asset exchange shall comply with— (i) the core principles described in this subsection, and annually certify such compliance; and (ii) any requirement that the Commission may impose by rule pursuant to section 8a(5). (B) Reasonable discretion of crypto asset exchange Unless otherwise determined by the Commission by rule, a registered crypto asset exchange described in subparagraph (A) shall have reasonable discretion in establishing the manner in which the registered crypto asset exchange complies with the core principles described in this subsection. (2) Compliance with rules A registered crypto asset exchange shall— (A) establish and enforce compliance with 1 or more rules of the registered crypto asset exchange, including— (i) the terms and conditions of the trades traded or processed on or through the registered crypto asset exchange; and (ii) any limitation on access to the registered crypto asset exchange