Ohio Rev. Code § 4509.62: Proof of financial responsibility evidenced by certificate of treasurer of state.

A person may effectuate proof of financial responsibility by depositing with the registrar of motor vehicles thirty thousand dollars in money. The registrar shall not accept any such deposit unless it is accompanied by evidence that there are no unsatisfied judgments against the depositor in the county where the depositor resides.

The financial responsibility custodial fund is created, which shall be in the custody of the treasurer of state but shall not be part of the state treasury. All money deposited under this section shall be credited to that fund.