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When Measurements Meet Blockchain: On Behalf of an Inter-NMI Network.

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This study proposes a blockchain architecture for National Metrology Institutes (NMIs) to enhance measurement reliability. The system, tested between German and Brazilian NMIs, successfully authenticates smart meters, paving the way for global metrology collaboration.

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Area of Science:

  • Metrology and Information Technology
  • Distributed Ledger Technology Applications
  • Legal Metrology Systems

Background:

  • Increasing demand for reliable measurement solutions (digital sensors, smart meters) raises concerns about data integrity.
  • Blockchain technology offers a robust platform for secure applications in legal metrology.
  • National Metrology Institutes (NMIs) are key stakeholders in advancing metrology initiatives.

Purpose of the Study:

  • To present a functional architecture for integrating NMIs into a collaborative blockchain network.
  • To identify essential features for an inter-NMI blockchain network.
  • To demonstrate a practical application of blockchain in metrology.

Main Methods:

  • Development of a functional architecture for inter-NMI blockchain integration.
  • Implementation using the Hyperledger Fabric platform.
  • Connection of peers from Physikalisch-Technische Bundesanstalt (PTB) and National Institute of Metrology, Quality, and Technology (Inmetro).

Main Results:

  • Successful implementation of a blockchain-based public-key infrastructure for smart meter identification and authentication.
  • Demonstration that the proposed architecture meets key requirements for measurement applications.
  • Validation of the collaborative approach between NMIs.

Conclusions:

  • The proposed blockchain architecture enhances information and process reliability in metrology.
  • The system facilitates secure identification and authentication of smart meters.
  • This initiative provides a foundation for global NMI collaboration in metrology.