exchange that is also registered with the Securities and Exchange Commission may offer a contract of sale of a restricted digital asset. (4) Rules for certain digital asset sales The digital commodity exchange shall have in place such rules as may be necessary to reasonably ensure the orderly sale of any unit of a digital commodity sold by a related person or an affiliated person. (c) Core principles for digital commodity exchanges (1) Compliance with core principles (A) In general To be registered, and maintain registration, as a digital commodity exchange, a digital commodity exchange shall comply with— (i) the core principles described in this subsection