Ohio Rev. Code § 5703.33
A transcribed copy of the evidence and proceedings, or any specific part thereof, of any investigation which is taken by a stenographer appointed by the department of taxation and which is certified by such stenographer to be a true and correct transcript of all the testimony in the investigation, or of a particular witness, or of a specific part thereof, carefully compared by him with his original notes, and stated to be a correct statement of the evidence and proceedings had on such investigations shall be received in evidence with the same effect as if such reporter were present and testified to the facts so certified. A copy of such transcript shall be furnished on demand to any party upon the payment of the fee therefor, as provided for transcripts in courts of common pleas.
R.C. §5703.33