Mich. Comp. Laws § 560.145

Sec. 145. (1) A certificate shall be signed and dated by the county treasurer relative to paid or unpaid taxes, special assessments and tax liens or titles, as required by section 135 of Act No. 206 of the Public Acts of 1893, as amended. (2) The certificate shall be signed and dated by the treasurer of the municipality, if the municipality does not return delinquent taxes to the state treasurer, as required by section 135 of Act No. 206 of the Public Acts of 1893, as amended.