5 ILCS 180/6

(a) Legal material in an electronic record that is authenticated under Section 5 of this Act is presumed to be an accurate copy of the legal material. (b) If another state has adopted a law substantially similar to this Act, 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. (c) A party contesting the authentication of legal material in an electronic record authenticated under Section 5 of this Act has the burden of proving by a preponderance of the evidence that the record is not authentic.