| 摘要 |
The object of this invention is to make both a user who saves contents data and a user who is permitted to browse the contents data can easily determine whether the contents data is an original without determining in each environment using a dedicated device or application. The user determines whether the contents data uploaded from a user terminal via a network is an original, and the determination result is stored in a memory. In response to an acquisition request of the contents data from the user terminal which uploaded the contents data or the other user terminal, the contents data is transmitted to the user terminal together with the corresponding determination result. Even if the terminal which uploads the contents data is different from the terminal which sends the contents data acquisition request, the user can determine only once whether the contents data is an original. Alternatively, even if the terminal which uploads the contents data is same as the terminal which sends the contents data acquisition request, and the plurality of contents data acquisition requests are sent, the user can determine only once whether the contents data is an original.
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