Ohio Rev. Code § 3127.43: Full faith and credit to orders issued by court of another state.

A court of this state shall accord full faith and credit to an order issued by another state consistent with this chapter that enforces a child custody determination by a court of another state unless the order has been vacated, stayed, or modified by a court having jurisdiction to do so under sections 3127.15 to 3127.24 of the Revised Code or a similar statute of another state.