The comptroller shall adopt rules as necessary or convenient to implement and administer this subchapter, including rules to:
(1) provide for the security of transactions in gold and silver specie and gold and silver currency and related information;
(2) determine the value of the gold and silver currency described by Section 2116.102 at the time of a transaction or in a commercially reasonable manner;
(3) establish a fee that is reasonable and necessary to administer this subchapter;
(4) authorize and approve vendors, including financial institutions, to provide an electronic system described by Section 2116.102; and
(5) adopt policies and procedures to prevent:
(A) fraud; and
(B) transactions in gold and silver specie or gold and silver currency involving a foreign adversary, or a person associated with a foreign adversary, as determined under 15 C.F.R. Section 791.4.