Retention of supervision by office.

A state financial institution may not cause to be performed, by contract or otherwise, any financial-institution services for itself, whether at or away from its main or branch office or on or off its premises, unless assurances satisfactory to the office are furnished to the office by both the state financial institution and the person performing such services that the performance thereof will be subject to regulation and examination by the office to the same extent as if such services were being performed by the state financial institution itself on its own premises.