TCJEOR

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Developing a Management System Using Blockchain Technology toManage Individual's Health Care Information in Hiroshima and an
Open Data Distribution Platform with a Functions of Information Trust

COMPANY NAME

Hiroshima UniversityPPROJECT TITLE

Creating a Secure and Connected System ofInformation Sharing to Help Individuals Reach
One Hundred and Beyond
The main purpose of Hiroshima Sandbox is to construct a system of open data distribution across various industries
and to use that information to further develop new practices and services. Until now, in order to achieve this goal theproject has focused its efforts on creating the platform base, as well as conducting field tests, and gaining the rights
to data utilization. However, a new goal has emerged, and that focus is now directed towards the healthcare system,and making the lives of the people who live there better.

A System of Trust
When society 5.0 is finally achieved, it will be like a "whole new world," says Kihara. The use of AI and IoT to "create a world
where one can go about their daily lives, but at the same time have instant access to a wide range of information- it's
something out of a Sci-Fi fantasy. However, the concept of trust, and entrusting one's personal information to suchtechnology will be the main concern moving forward."
All information information collected will be likely used by third party companies, so trust is of the upmost importance. An
example of how this would work would be a pharmaceutical company that is producing a new diabetes drug, and needs
information about potential patients. They would search through a large database, and then request for information
disclosures from any matched individuals. The project is also thinking of introducing a token system that would works as asort of digital certificate in exchange for providing information.
Currently, patient information is only available to the specific hospital where the patient is being treated. The medical fee
statement system is Japan is the only intergraded system in use, however it doesn't provide an accurate description of mostpatient's health. In addition to that, any studies conducted by private companies like pharmaceuticals tends to stay only withinthat company, and is never shared with the public. Some hospitals have started to adopt an electronic system of information
sharing, but most do not have a universal system, so many are not compatible with one another. In what the Japanese
government dubs "society 4.0", or our current reality, a lot of valuable data is scattered and divided. Constructing an open data
distribution system will be the first step into the society of the future.

Creating a Real Sci-Fi Fantasy
Blockchain-Based Open Data Distribution Platform with a Functions of Information Trust
Data Providers

Medical Fee
Statement System

Individuals

Open Data Platform

Personal Data Store

Application

MedicalCheckup Result

Trust

Medical History

Physical Activities/
Purchase History

Data Users

Anonymize

Incentive

Vital DataPurchase/
Traffic History

AIAgreement

AI

When it comes to patient healthcare information, "it is one of the most sensitive fields out there," says Kihara. "That's
why it's important to create a system that builds trust, and one that can potentially be used in a number of fields."
Members of the team feel that if you have a comprehensive data system, that can collect and analyze all aspects of your daily
life, from food to exercise, then individuals can live a long, healthy life- maybe even until one hundred. "You can't enjoy yourgolden years if you become bed ridden at eighty five. The ideal system would be to not only collect data from eachindividual, but to have a system that can also give advice as well. Imagine a future where sensors can know theamount of calories purchased per day, and advise on healthier options. There's a possibility to give incentives, suchas discounts, for healthy purchases too," remarks Kihara. He continues by saying, "Currently we are only conducting
filed tests in Hiroshima, but out aim is to create a platform that unities the whole of Japan. I'm quite proud of thisproject, and am amazed by the advances that we are able to achieve."

A Sense of Urgency Offering "Smart" Healthcare in Rural Areas
The field tests that are currently underway in areas across Hiroshima will continue until 2020 before focusing on a nation wide
network. A lot of the current data is being collected from wearable technology in accordance with local municipalities. Kihara
comments on this by saying, "local governing bodies recognize the importance of this project, but of course they havetheir misgivings, especially in relation to patient's personal information. However, in local rural areas where theaging population is highest, and hospitals are scarce, officials are starting to put more hope in projects like this. An
example of this is Usuki city where they have already introduced a type of data collection system and seen somepositive results. If I'm the primary doctor of a certain patient, I shouldn't keep that information solely to myself, butshare it with other health care providers in hopes of providing the best possible treatment for that individual. I really
hope that Hiroshima, and the rest of Japan, embraces this kind of treatment."

How Society 5.0 Can Change Healthcare

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HIROSHIMA SANDBOX②③DATA PLATFORM

In 2016, the Japanese government put forth a proposal to create a "Society 5.0" ahead of the rest of the developed world.
This society would aim to merge the virtual and real worlds as we know them using AI and IoT technology. With
interconnected realities the ability to share and analyze many forms of data will become significantly easier. It was for thisreason that Hiroshima Sandbox first came to be.
A team led by Hiroshima University, and utilizing a platform designed by OKEIOS, have already started field tests. Theplatform in question makes use of blockchain technology, much like that of many cryptocurrencies. For this project Hiroshima
University will make the call on how the majority of information is shared and collected, however, individuals who participate
will have to sign release forms detailing how the team plans to use their information. While in some cases anonymizing datais necessary, other cases may call for maintaining a clear connection with each individual.
According to Yasuki Kihara, vice president of Hiroshima University, and a certified cardiologist, "If we can compile acomprehensive medical files on individuals spanning their whole life, from birth until death, we might be able to findseveral never before thought of connections. Of course it doesn't only stop at medical history, but a patient's life
style choices as well. Things like their purchase history or their history of physical activities. These harder to track
bits of information might just be what doctors and health care physicians need to help prevent life threatening
diseases, and help in other preventative measures."①●Hiroshima University①Yasuki Kihara ②Tetsuya Ichikawa ③Yukio Fukuda

HIROSHIMA SANDBOX20