If not annulled or set aside, such award shall be final and a charge upon the city, for the payment of which the credit of the city shall be pledged. Such assessments shall be and remain a lien and charge upon the respective lands until paid. The award shall be paid to the persons entitled thereto or deposited and set apart in the treasury of the city for the use of the persons entitled thereto within six months after the confirmation of the appraisement and award. In case any appeal shall be taken from the order confirming the appraisement and assessment, as hereinafter provided, the time for payment of the awards shall be extended until and including 60 days after the final determination of all appeals taken in the proceedings, and in case of any change in the awards or assessment upon appeal, the city council may, by resolution duly adopted, at any time within 60 days after the determination of all appeals, set aside the entire proceeding. Any awards so set aside shall not be paid, and the proceedings as to the tracts for which the awards are so set aside shall be deemed abandoned. Any awards not so set aside shall be a charge upon the city, for the payment of which the credit of the city shall be pledged. All awards shall bear interest at the rate of six percent per annum from the time of the filing of the original appraisers’ report, and all subsequent awards and awards upon appeals shall be made as of the day and date of filing of such original reports.