A trusted alliance block chain digital calibration certificate system and its operation method

Abstract

The invention discloses a trusted alliance block chain digital calibration certificate system and its operating method. The system includes: a distributed ledger system (10) based on a distributed storage system of a hyperbook; used for all entities in the system CA system (11) for identity certificate management and identity registration; UTC time calibration server (12) for providing UTC time calibration services for all blockchain node servers in this system; and for alliance management and instrument unit management . Calibration agency management, generating a digital calibration certificate from the calibration certificate data through digital signature technology, extracting relevant entity information, and forming a digital calibration certificate subsystem (13) for original information of multiple data blocks. By adopting the present invention, the deficiencies of the existing digital calibration certificate technology based on block chain technology can be solved by establishing a reliable, credible, safe, and continuously growing calibration chain and traceability chain.

Description

technical field [0001] The present invention relates to block chain technology, in particular to a trusted alliance block chain digital calibration certificate system and its operating method. Background technique [0002] According to the definition in "ISO / IEC Guide 1999", metrology (Metrology) is the science of measurement and its application. Metrology includes all theoretical and practical aspects of measurement, regardless of measurement uncertainty and field of application. [0003] Measurement is an activity to achieve uniform units and accurate values. According to "International Metrology Vocabulary Fundamentals and General Concepts and Related Terminology (VIM)", metrological traceability is defined as: "The characteristic of the measurement result that links the measurement result to the reference object through a documented uninterrupted calibration chain, calibration Each calibration in the chain introduces measurement uncertainty." [0004] From the technica...

AI Technical Summary

Problems solved by technology

[0008] However, in the current digitalization process of calibration certificates, there are several problems in calibration certificates, especially not suitable for the development needs of the digital economy era: 1) There are various certificates and various definitions of specific terms, which cannot be machine-readable and calculable, so it is necessary to Manually judging the authenticity, pros and cons, not only consumes a lot of manpower, but also is prone to errors

2) The format is not uniform, which makes it very difficult to structure the certificate information (the certificates issued by different verification institutions have different formats; the certificates of different types of measuring instruments issued by the same verification institution have different formats; may vary)

Therefore, it is difficult to accumulate data and form large-scale data, and it is even more difficult to do big data statistics and deep mining

3) Paper certificates or electronic certificates in word and pdf formats are easy to be tampered with or forged, and the workload of authenticity inspection of certificates is very large (some provincial institutes of metrology can check the certificate number online, but it is difficult to check the specific measurement data and content for authentication)

4) Each calibration certificate exists independently, and it is difficult to establish a clear calibration chain from the calibration certificate. It requires a lot of manpower and material resources to sort out the calibration chain, and often returns due to incomplete data and uncertain results.

Therefore, it is difficult to form a traceability chain of measurement value

5) The calibration chain and traceability chain need to be manually established, which is time-consuming and error-prone, so the traceability of the value is difficult, time-consuming and laborious, and it is difficult to meet the needs of the development of the digital economy era

[0010] Although the digital calibration certificate proposed by PTB has many advantages and solves the problem that some calibration certificates are difficult to adapt to the development of the digital economy, it still cannot solve the following problems: 1) Since the digital certificate is stored in a unified At the level, the characteristics of anti-tampering and anti-repudiation cannot be fully achieved (in case of problems with the data storage institution); 2) The digital calibration certificate is isolated, and the two certificates are independent, and there is no growing reliable chain, which needs to be reprocessed and reprocessed manually. Establishing a system is time-consuming and labor-intensive, and it is easy to introduce errors or frauds, causing another level of mistrust; 3) Without a reliable and credible complete data chain, it is difficult to form a reliable and credible calibration chain and traceability chain, then Verification and supervision can only be checked randomly or locally, which is ineffective and consumes a lot of manpower and material resources

Images