Okla. Stat. tit. 47 § 7-330
Proof of financial responsibility may be evidenced by the certificate of the Department of Public Safety that the person named therein has deposited with the Department at least Seventy-five Thousand Dollars ($75,000.00) in cash, or a certificate of deposit issued by a financial institution located in Oklahoma in an amount of at least Seventy-five Thousand Dollars ($75,000.00). The Department shall deposit any cash it receives for this purpose in a special account of the Department which shall be held in escrow until necessary to pay judgments as described in Section 7-331 of this title. The Department shall obtain a written acknowledgment from any financial institution issuing a certificate of deposit which is used for the purpose of this section, showing the certificate of deposit has been pledged to the Department for this purpose. The Department shall not accept any deposit and issue a certificate therefor and the Department shall not accept the certificate unless accompanied by evidence that there are no unsatisfied judgments of any character against the depositor in the county where the depositor resides.
Okla. Stat. tit. 47, § 7-330