Traceability Management System Using Blockchain Technology and Cost Estimation in the Metrology Field.

Area of Science:

• Metrology
• Blockchain Technology
• Data Management

Background:

• Metrological traceability is crucial for reliable calibration tests but often lacks transparency for end-users.
• Current calibration certificates typically only show one upper-level reference standard, obscuring the full traceability chain.
• The multi-layered nature of metrological traceability makes it difficult for end-users to confirm links to primary standards.

Purpose of the Study:

• To propose a novel digital data management method using blockchain for metrological traceability.
• To enhance the transparency and reliability of calibration tests by enabling instant verification of traceability.
• To develop a smart contract for tracing calibration standards back to the primary standard.

Main Methods:

• Utilizing the Ethereum blockchain for its tamper resistance and high availability.
• Developing a smart contract to record and manage metrological traceability data.
• Analyzing the transaction fee structure for smart contract execution in metrology.

Main Results:

• Demonstrated that end-users can instantly obtain complete traceability information using the proposed system.
• Confirmed the feasibility of using blockchain for secure and transparent metrological traceability.
• Organized the calculation of transaction fees and evaluated the system's cost-effectiveness.

Conclusions:

• The blockchain-based smart contract system significantly improves transparency and reliability in metrological traceability.
• End-users gain immediate access to the full traceability chain, enhancing trust in calibration tests.
• The system offers a cost-effective approach to traceability management in metrology, considering transaction fees.