Payment agency system, user terminal and market server

PURPOSE: A payment agency system, a user terminal, and a market server are provided to offer a reliable payment treatment means by being interlocked with a post-payment billing system using terminal certification information of a user terminal. CONSTITUTION: A payment agency system (400) comprises an issuing part (401), an issuing database (DB) (403), a registration part (405), a certification information DB (407), a verification part (409), and a billing treatment part (411). The issuing part issues one or more payment tickets to a user terminal and stores an issuing history to the issuing DB. The issuing DB stores matching information of one or more payment tickets which are issued according to a subscriber and matches activation or inactive state information according to use of each payment ticket. The registration part performs a process for registering a market server. The certification information DB stores market certification information which is issued for different market servers. The verification part verifies a signature delivered from the market server. The billing treatment part produces billing data in case the verification part succeeds in verification and transmits it to a post payment billing system (500). The billing treatment part performs a settlement process to a market if acceptance information is received from the post-payment billing system. [Reference numerals] (400) Payment agency system; (401) Issuing part; (403) Issuing database; (405) Registration part; (407) Certification information database; (409) Verification part; (411) Billing treatment part; (500) Post payment billing system; (600) Terminal certification system