Title:
CONTENT TIME CERTIFICATION SYSTEM
Document Type and Number:
Japanese Patent JP2023123737
Kind Code:
A
Abstract:
To provide a system, a method, and a program which can certify existence and time of content at low cost and reliably.SOLUTION: A content time certification system records a hash value of content in a time certification block chain, and records, when a predetermined condition is met, time stamp information acquired from a time stamp provider which provides a time stamp to the blockchain. The predetermined condition may be addition of a predetermined time or a predetermined number of pieces of content. In the case of time verification, the system searches for a block having the same hash value from among blocks of the time certification block chain. A time range in which the content is added can be identified on the basis of time stamp information adjacent thereto.SELECTED DRAWING: Figure 1
Inventors:
KURAKAWA KIYOSHI
Application Number:
JP2023106542A
Publication Date:
September 05, 2023
Filing Date:
June 28, 2023
Export Citation:
Assignee:
TOKYO TECHNICAL CONSULTANT INC
International Classes:
H04L9/32
Attorney, Agent or Firm:
Kiyoshi Kurihara