The execution of a grant of an estate in real property to entitle the same to be recorded, if it is not acknowledged, must be proved by a subscribing witness or as otherwise provided in sections 47-19-23 and 47-19-24. The absence of the seal of any grantor or grantor's agent from any grant of an estate made in real property shall not invalidate or in any manner impair the same.
N.D.C.C. § 47-10-05