Okla. Stat. tit. 19, § 113

The bondsmen of said county treasurer shall be liable to the bank depositing any of the securities as above named for the accounting of all such securities and the return to said bank of any or all of the securities as above named, or their value in money. Before any of the securities above named shall be accepted by the county treasurer in behalf of the county commissioners said securities shall be approved to the satisfaction of a majority of a commission composed of the judge of the district court, district attorney and county clerk.