Ohio Rev. Code § 317.12
Upon the presentation of a deed or other instrument of writing for record, the county recorder shall indorse thereon the date, the precise time of its presentation, and a file number. The file numbering shall be consecutive and in the order in which the instrument of writing is received for record, except financing statements, which may have a separate series of file numbers and may be filed separately, as provided by sections 1309.501 to 1309.527 of the Revised Code. The recorder shall, without fee, give to the person presenting such instrument a receipt naming the parties thereto and the date thereof. When a deed or other instrument is recorded, the county recorder shall indorse on it the time when recorded, and the number or letter and page of the official records in which it is recorded.
R.C. § 317.12