NETWORK SYSTEM, AUCTION SERVER, DIGITAL CONTENT DISTRIBUTION SYSTEM, AND DIGITAL CONTENT DISTRIBUTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a system for protecting the supplier of an original content while not preventing the generation of the copy of a digital content but recognizing the free generation of the copy. SOLUTION: A content supplier terminal 12, an advertisement providing terminal 13 and a B to B server 11 and a B to C server 21, which receive a digital content from the content supplier terminal 12 through a communication network, collect an advertisement content added to the received digital content from the advertisement supplier terminal 13, support the realization the contract of the addition of an advertisement including a condition on pay to the supplier of the digital content between the supplier of the digital content and the supplier of the advertisement content and open the digital content with advertisement, which is generated by connecting the digital content whose contract is realized with the advertisement content on an Internet, are installed.