N.D. Cent. Code § 6-08-26
Before qualifying or serving in this state in any fiduciary capacity as defined in section 6-08-25, such bank or trust company shall file in the office of the secretary of state a filing fee of fifty dollars, a copy of its charter certified by its secretary, and a power of attorney designating the said secretary of state or the secretary of state's successor in office as the person upon whom all notices and processes issued by any court of this state may be served in any action or proceeding relating to any trust, estate, or matter within this state in respect of which such bank or trust company is acting in any fiduciary capacity with like effect as personal service on such bank or trust company. Such power of attorney is irrevocable so long as any such liability remains outstanding against such bank or trust company in this state. Upon receipt of such notice or process with a filing fee of twenty-five dollars, it is the duty of the said secretary of state forthwith to forward the same by registered or certified mail to such bank or trust company at the address stated in the said power of attorney, and such bank or trust company shall comply with the provisions of chapter 6-05, insofar as the provisions of said chapter pertain to banks or trust companies.
N.D.C.C. § 6-08-26