The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2024
Filed:
Mar. 30, 2020
National Institute of Metrology, China, Beijing, CN;
Xiang Fang, Beijing, CN;
Xingchuang Xiong, Beijing, CN;
Feng Tian, Beijing, CN;
Yichuan Tang, Beijing, CN;
Wenkui He, Beijing, CN;
Zhen Liu, Beijing, CN;
NATIONAL INSTITUTE OF METROLOGY, CHINA, Beijing, CN;
Abstract
The present invention discloses a trusted alliance block chain digital calibration certificate system and an operation method therefor. The system comprises: a distributed ledger system () of a distributed storage system based on a hyperledger fabric; a CA system () for management of all entity identity certificates and registration of identities in the system; a UTC time calibration server () for providing a UTC time calibration service for all block chain node servers of the system; and a digital calibration certificate subsystem () for generating, by means of alliance management, instrument organization management, and calibration institution management, a digital calibration certificate from calibration certificate data by a digital signature technology, extracting related entity information, and forming original information of multiple data blocks. The system can overcome the shortcomings of existing block chain technology-based digital calibration certificate technologies by establishing a calibration chain and a traceability chain which are reliable, trusted, secure, and continuously growing.