Okla. Stat. tit. 24 § 31
An insolvent debtor may, in good faith, execute an assignment of property to one or more assignees, in trust towards the satisfaction of his creditors, in conformity to the provisions of this chapter; subject, however, to the provisions of the law relative to trusts and to fraudulent transfers, and to the restrictions imposed by law upon assignments by special partnerships, by corporations or by other specified classes of persons: Provided, that such assignment shall not be valid if it be upon or contain any trust or condition by which any creditor is to receive a preference or priority over any other creditor; but in such case the property of the insolvent shall become a trust fund to be administered in equity, in the district court, and shall inure to the benefit of all the creditors in proportion to their respective claims or demands.
Okla. Stat. tit. 24, § 31