Ohio Rev. Code Ann. § 1304.23
(A) With respect to settlement by a bank, the medium and time of settlement may be prescribed by federal reserve regulations or circulars, clearing house rules, and similar rules and documents, or agreement. In the absence of prescription in that manner, both of the following apply:
(2) The time of settlement is one of the following:
(C) If settlement for an item is made by cashier's check or teller's check, both of the following apply: