Patent ID: 7143144
Filing Date: 2006-11-28
Classification: G06F

Abstract:
1. A method of certifying at least existence of a prescribed electronic information released on a network at prescribed time and date, said network connecting one or more computer servers and a plurality of client computers, said method comprising: accessing, by one of the computer servers on the network, a prescribed electronic information stored in prescribed one of plurality of client computers using information of its location from one of the computer servers based on a request from the prescribed one of the client computers; obtaining, by the one of the computer servers on the network, a copy of the prescribed electronic information; generating, by the one of the computer servers on the network, prescribed attribute information from at least the location and time and date when said step of accessing the prescribed electronic information is executed; generating, by the one of the computer servers on the network, a prescribed electronic certificate by uniquely specifying the electronic information and the attribute information; obtaining and storing, by the one of the computer servers on the network, the prescribed electronic certificate in a first memory associated with the one of the computer servers on the network; and storing, by the one of the computer servers on the network, the copy of the electronic information in a second memory associated with the one of the computer servers on the network.