Japan’s Medical Project Pracs Completed Phase 1 of IOST Integration

This article was first published on Stories by IOS Foundation on Medium
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University-born health tech venture, Pracs and IOST core developer, EverSystem have developed a prototype and completed the first phase of the introduction of the Personal Health Record (PHR), a system that allows users to manage their own health information. This project aims to manage personal health data as a health handbook using blockchain technology and share it with medical professionals.

For the uninitiated, on June 8, 2020, IOST announced a partnership with Japan-based Medical Health Tech Venture “Pracs.” This partnership aims to promote blockchain technology in the healthcare industry by developing a blockchain-enabled secure, transparent, and tamper-proof-on-chain medical record platform, with the first project being the Disease Management Notebook.

Figure 1

Below are the technical details of the progress with the Pracs project

Overall System Configuration

The project’s system is a combined database and blockchain system with users and medical facilities as actors, as shown in Figure 1. Here, public-key cryptography is used both inside and outside the blockchain. The important point is that the raw, unencrypted health data is kept only in the user’s hand on the phone.

Figure 2: Overall System Configuration

Verification Environment Configuration

As shown in Figure 2, the API server is built in the Amazon AWS cloud on EC2 on a Docker basis, and runs in a private net to avoid direct access to the server. To ensure security, it is accessed via HTTPS protocol via a load balancer with a certificate. The server is Nest.js+TypeORM, implemented in the TypeScript language. For the database, it used the MySQL-based AWS Aurora database, and the blockchain is IOST private chain. The health data storage API implements two phases of committing: storing encrypted data in the database and storing the hash value of the data in the blockchain.

System Access Procedure for Users (see Figure 3)

  1. The user launches ...

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