Proof of the execution of an instrument when not acknowledged may be made: 1. By the party executing it; 2. By a subscribing witness; or 3. By other witnesses in cases mentioned in sections 47-19-23 and 47-19-24.
Proof of an unacknowledged instrument - Method
N.D.C.C. § 47-19-21 — under Record Title.
N.D.C.C. § 47-19-21