Ohio Rev. Code § 149.23: Authentication.

(A) An official publisher of legal material in an electronic record that is designated as official under section 149.22 of the Revised Code shall authenticate the record. To authenticate an electronic record, the publisher shall provide a method for a user to determine that the record received by the user from the publisher is unaltered from the official record published by the publisher.

(B) Legal material in an electronic record that is authenticated under division (A) of this section is presumed to be an accurate copy of the legal material.

(C) If another state has adopted a law substantially similar to sections 149.21 to 149.27 of the Revised Code, legal material in an electronic record that is designated as official and authenticated by the official publisher in that state is presumed to be an accurate copy of the legal material.

(D) A party that contests the authentication of legal material in an electronic record authenticated under division (A) of this section has the burden of proving by a preponderance of the evidence that the record is not authentic.