| （英） |
Recently, the information sending and the information exchange on the Web are general with the spread of the Internet. However, because the information on Web can be changed and deleted, the stability of the information is low. Therefore, we proposed "Existence proof service" that proves the information existed at a certain past time, and there is no change after wards. The target of this service has been the reader of the information on the Web up to now, however. Hence, with the aim to improve the reliability of the information provider, we newly developed the API of this service. In this paper, this API is presented. |