1. Unless a delayed effective date or time is specified, the corporate or organizational existence of a state bank begins when the articles of incorporation, with the superintendent‘s approval indicated on the articles of incorporation, are filed with the secretary of state.
 2. The secretary of state’s filing of the articles of incorporation is conclusive proof that the incorporators or organizers satisfied all conditions precedent to incorporation or organization, except in a proceeding instituted by the superintendent to cancel or revoke the incorporation or involuntarily dissolve the corporation or organization.