Med-PPPHIS: Blockchain-Based Personal Healthcare Information System for National Physique Monitoring and Scientific...

Area of Science:

• Health Informatics
• Blockchain Technology
• Cybersecurity

Background:

• Electronic medical data sharing is crucial for medical advancements but hindered by fragmentation and security risks.
• Centralized data storage is vulnerable to attacks and tampering, compromising patient privacy.
• Current methods lack effective solutions for secure and efficient medical data management and circulation.

Purpose of the Study:

• To propose Med-PPPHIS, a hybrid blockchain model for secure personal health information management.
• To establish a chained protection mechanism for medical data using a permission-less and permissioned blockchain.
• To enable safe and efficient medical data circulation while ensuring data privacy.

Main Methods:

• Developed Med-PPPHIS, integrating a permission-less blockchain with a permissioned blockchain (Med-DLattice) featuring a Directed Acyclic Graph (DAG) structure.
• Implemented an efficient consensus algorithm (DPoS-Quorum) for Med-DLattice nodes.
• Converted medical data into on-chain tokens to create a secure channel for data circulation.

Main Results:

• The Med-PPPHIS model demonstrated low latency and high throughput in performance evaluations.
• Security analysis confirmed the model's ability to prevent various cyberattacks, including Sybil and DDoS attacks.
• A prototype was implemented and applied to chronic disease management and national physique monitoring.

Conclusions:

• Med-PPPHIS offers a secure and efficient solution for managing and sharing electronic medical data.
• The hybrid blockchain approach effectively addresses fragmentation and security challenges in current medical data systems.
• The model shows promise for advancing medical research, improving chronic disease management, and enhancing public health monitoring.