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Blockchain-enabled immutable, distributed, and highly available clinical research activity logging system for

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A new blockchain system enables secure, efficient federated data analysis across institutions. This distributed ledger technology offers faster data processing and querying compared to traditional methods, enhancing research communication.

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Area of Science:

  • Distributed systems
  • Blockchain technology
  • Data analysis

Background:

  • Federated data analysis across multiple institutions presents challenges in data security, immutability, and availability.
  • Existing systems often lack transparency and efficiency in managing research communication and data logs.

Purpose of the Study:

  • To develop a distributed, immutable, and highly available cross-cloud blockchain system for federated data analysis.
  • To facilitate secure and transparent data sharing and analysis activities among multiple institutions.

Main Methods:

  • Processed 9166 COVID-19 related data logs from the R2D2 Consortium GitHub repository.
  • Developed on-chain and off-chain components for storing and querying activity logs on a blockchain.
  • Measured smart contract deployment, transaction times, and log recording/querying efficiency against a centralized baseline.

Main Results:

  • Smart contract deployment averaged 4.5 seconds.
  • Activity log recording on the blockchain took just over 2 seconds, compared to 5-9 seconds for the baseline.
  • Blockchain querying averaged less than 0.4 seconds, significantly faster than the baseline's 2.1 seconds.

Conclusions:

  • The developed cross-cloud, blockchain-based system is feasible for federated data analysis, demonstrating low deployment, recording, and querying times.
  • Further evaluation is needed for larger networks, activity surge accommodation, and query time optimization as the blockchain scales.