N.D. Cent. Code § 47-20.1-03

A surveyor shall complete, sign, stamp with the surveyor's seal and file with the recorder of the county where the corner is situated a written record of corner establishment or restoration to be known as a "corner record" for every public land survey corner and accessory to such corner which is established, re-established, monumented, remonumented, restored, rehabilitated, perpetuated, or used as control in any survey by such surveyor, and within ninety days thereafter, unless the corner and its accessories are substantially as described in an existing corner record filed in accord with the provisions of this chapter.