DESIGN AND IMPLEMENTATION OF DISTRIBUTED LEDGER BASED HEALTH DATA MANAGEMENT SYSTEM

摘要

In this paper, we propose a new health data management system based on distributed ledger. The Personal Health Record (PHR) systems are the most developed technology for a person to manage his or her own health data. The PHR systems have technical and legal problems despite rapid technological advances. It is technically very difficult to integrate and standardize dispersed data. In addition, there are many legal limitations because health data is very sensitive. Therefore, the PHR systems have attempted to solve these problems using blockchain. However, these attempts do not solve all problems. Personal health data is still dispersed, and in some countries it is not legally permitted to record health data in a blockchain. In most countries, individuals have a right to store their own health data. The proposed system stores health data in the device of each information subject participating in health data generation processes. The proposed system also makes the individual user's device a member of the network. Users can utilize the data as if they were using the data on a single system.