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Updated: Jan 9, 2026

TBase - an Integrated Electronic Health Record and Research Database for Kidney Transplant Recipients
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A privacy preserving medical data management framework using blockchain enabled encrypted role based access control.

Ahmed I Taloba1, Alanazi Rayan2

  • 1Department of Computer Science, College of Computer and Information Sciences, Jouf University, Sakaka, Saudi Arabia. aitaloba@ju.edu.sa.

Scientific Reports
|December 5, 2025
PubMed
Summary

This study introduces a blockchain-based system for secure Electronic Health Records (EHRs), enhancing data protection and patient trust. The novel framework significantly improves privacy retention and access efficiency compared to traditional systems.

Keywords:
BlockchainEncrypted Role-Based access controlMedical data securityPrivacy preservationSmart contracts

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Area of Science:

  • Health Informatics
  • Computer Science
  • Cybersecurity

Background:

  • Rapid healthcare computerization raises concerns about data leakage, unauthorized access, and patient trust.
  • Traditional centralized medical records present vulnerabilities like single points of failure and privilege misuse, leading to data breaches.

Purpose of the Study:

  • To propose a privacy-sensitive medical data management system using blockchain technology.
  • To offer secure, transparent, and role-based access to Electronic Health Records (EHRs).

Main Methods:

  • A framework combining multi-layer cryptographic security, decentralized authorization via smart contracts, and encrypted storage with the InterPlanetary File System (IPFS).
  • Verifiable and tamper-resistant storage of access transactions on the blockchain.

Main Results:

  • Achieved 98.5% access success rate and 96% privacy retention.
  • Demonstrated high efficiency with 220 access requests per second.
  • Outperformed traditional centralized EHR systems by 12-15 times in efficiency and privacy.

Conclusions:

  • The proposed blockchain-based system offers a robust, scalable, and privacy-ensuring alternative for medical data management.
  • Guarantees integrity, accountability, and efficiency in medical data sharing.
  • Addresses critical security and trust issues in digital health records.