Ohio Rev. Code § 4509.46
Proof of financial responsibility may be furnished by filing with the registrar of motor vehicles the written certificate of any insurance carrier authorized to do business in this state certifying that there is in effect a motor-vehicle liability policy for the benefit of the person to furnish proof of financial responsibility. The certificate either shall state the expiration date of the policy, which date shall be not less than one year from the effective date of the certificate, or if no expiration date is stated in the certificate, then such policy shall not expire until canceled or terminated as provided in section 4509.57 of the Revised Code. The certificate shall also designate by explicit description or by appropriate reference all motor vehicles covered, unless the policy is issued to a person who is not the owner of a motor vehicle.
R.C. §4509.46