Texas Government Code - GOV'T § 2116.005. Deposits and Depository Accounts;  Standards

(a) The depository may receive a deposit of bullion or specie from or on behalf of a person acting in the person's own right, as trustee, or in another fiduciary capacity, in accordance with rules adopted by the comptroller as appropriate to:

(b) The depository shall record the amount of precious metals a person deposits, regardless of form, in units of troy ounces pure, and the records must also specify the type and quantity of each precious metal deposited.

(c) The comptroller shall adopt standards by which the quantities of precious metals deposited are credited to a depositor's depository account by reference to the particular form in which the metals were deposited, classified by mint, denomination, weight, assay mark, or other indicator, as applicable.  The standards must conform to applicable national and international standards of weights and measures.

(d) The comptroller may, if the comptroller determines that to do so is in the public interest, restrict the forms in which deposits of precious metals may be made.

(e) The depository shall adjust each depository account balance to reflect additions to or withdrawals or deliveries from the account.