Mich. Comp. Laws § 487.801
That no person or persons shall be engaged in the business of a broker, or of buying or selling current or uncurrent money, or bank notes, or in the exchange thereof, or in the buying or selling exchange, or in the exchange of coins, or in the receiving of deposits of money or bank notes, as such broker or exchange dealer, unless such person or persons shall first make and file with the county clerk of the county in which such broker's office is or shall be located, a certificate in writing, to be signed by each, and verified by the affidavit of 1 of the members of said copartnership or company, setting forth the full name of each and every person composing the said firm, and the residence of each, the name and style of the firm, the terms of said partnership, and the length of time for which it is to continue, if limited by the partnership contract, and also the locality of their place of business; which certificate shall be kept in the office of the said county clerk, as a public document, and open to the inspection of any person.
MCL 487.801