To reduce a system load within a sales server and to provide a more rapid service by simplifying the construction and the function of the sales server.

In a utilization license solving server of the sale server 30, when a utilization right certificate is solved on the basis of a utilization license about contents desired by a user and is transmitted to a user terminal device 20, the utilization right certificate is stored and managed in a utilization right certificate management section 21. Then, in a service solving server 32, when a utilization right is solved on the basis of the utilization right certificate and is transmitted to the user terminal device 20, the utilization right is stored and managed in a utilization right management section 22. Thereafter, when the utilization right is presented by the user, the contents corresponding to the utilization right are transmitted from a contents management server 34 to the user terminal device 20.