No proof by evidence of the handwriting of a party, or of the subscribing witness or witnesses, shall be taken unless the officer taking the same shall be satisfied that all the subscribing witnesses to such conveyance are dead, out of the jurisdiction, or cannot be had to prove the execution thereof.
Utah Code § 57-2-14
Proof of handwriting
No Change Since 1953
Official source: Utah State Legislature. Reproduced from public-domain Utah statutes; confirm against the official source for the current text. Not legal advice.