Utah Code § 16-4-312: Affidavit and posting of notice -- Evidence.

(1) An affidavit made by the secretary of a corporation of the mailing of a notice required by this chapter is prima facie evidence of the existence and mailing of the notice.

(2) The publication of a notice under this chapter may be proved by the affidavit of:

(a) the printer foreman or principal clerk of the newspaper in which the notice was published; and

(b) in accordance with Section 45-1-101, the website publisher or website publisher's designee charged with publishing the notice as required in Section 45-1-101.

(3) The affidavit of the secretary of the corporation or the auctioneer responsible for selling shares is prima facie evidence of:

(a) the time and place of sale;

(b) the quantity and particular description of the shares sold;

(c) to whom and for what price the shares were sold; and

(d) the fact of the purchase money being paid.

(4) The affidavits referenced in this section shall be filed in the corporation's office.

(5) A copy of an affidavit referenced in this section is prima facie evidence of the facts contained in the affidavit if the affidavit is certified by the secretary.