; and (3) in subsection (c)— (A) in paragraph (2), by inserting or participants before (in ; (B) in paragraph (4)(B), by striking 1a(10) and inserting 1a(9) ; and (C) in paragraph (5), by adding at the end the following: (D) Special rules for the listing of certain digital commodities (i) In general In the case of listing a digital commodity for trading which has not yet been listed for trading on another registered entity, paragraphs (2) and (3) shall apply as if the listing were a rule, and paragraph (2) shall be applied by substituting 20 business days for 10 business days . (ii) Transitional extension For 1 year after the registration of the first digital commodity exchange, the Commission shall have an additional 20 business days review any certification under clause (i). (iii) Digital commodity presales In conjunction with listing a digital commodity in which any unit of the digital commodity was obtained through a digital commodity presale, the Commission shall require the registered entity to prohibit the sale of any unit of the digital commodity that was obtained in violation of section 4c(h). . (e) Registration of digital commodity exchanges