Ohio Rev. Code Ann. § 1707.30

In any prosecution, action, or proceeding based upon sections 1707.01 to 1707.50, inclusive, of the Revised Code, a certificate signed by the division of securities, showing the filing of or the failure to file any statement, description, or application required by such sections, shall constitute prima-facie evidence of such filing or of such failure to file, and shall be admissible in evidence in any action at law or in equity to enforce sections 1707.01 to 1707.50, inclusive, of the Revised Code, or to prosecute violations of such sections.