IOST to Securely Share Medical Records with Japanese Medical Health Tech Venture Pracs
Earlier in June, IOST announced the partnership with Japan’s Pracs to build a secure, transparent, and tamper-proof on-chain medical record platform. We are now seeing progress in this development and want to share it with the community.
IOST Japanese developer community is always leading a pilot project in various sectors. EverSystems, IOST developer certificate awarded, has been working with Pracs, a university-launched health technology venture, to develop a public chain-based application that allows users (patients) to have reliable information about their personal illnesses and health that can be trusted by third parties.
In a business model that leverages blockchain technology, it’s important to separate on-chain and off-chain for security, privacy, and usability. Security and privacy, in particular, tend not to be highly perceived by users, but they are the areas that companies build most heavily on. Adjusting and optimizing the balance of the burden between service providers (companies) and users (customers) will lead to usability.
Sample UI design of application by Pracs
Recording health data hashes in the blockchain
By recording a hash of the health data in the blockchain receipts, the data cannot be tampered with. The reason why health data is not stored in the blockchain itself is to answer requests for deletion of health data in order to protect personal information.
Public key cryptography as the encryption method (off-chain)
A key consists of a pair of private keys that only you know and a public key that you make available to others. The most common way to use it is to ask someone else to encrypt the data using the public key and send it to you, and then decrypt it with your own private key. There are two important functions of encryption in this system.
- By using the user’s private key and the healthcare organization’s public key, health data can be passed from the user to the healthcare organization through the server, without the server administrator being able to see it.
- When the private key is lost, the user’s private key can be re-issued by asking the healthcare provider to re-encrypt the health data with the healthcare provider’s private key and the newly created user’s public key.
It does not currently employ the use of blockchain private keys because it would result in the use of a wallet for crypto assets, which would limit the breadth of users.
Comments from Pracs Medical Team
“The benefits of using blockchain technology in healthcare include the high transparency and falsification resistance through the use of a decentralized system, while hospitals can significantly reduce the cost of information management. On the other hand, since it is a new technology, the incorporation of blockchain technology poses various challenges. We hope to use this project with IOST as an opportunity to promote the use of blockchain in the medical field.”
The advantages of developing on IOST
In the case of IOST, staking (depositing/locking) IOST tokens eliminates the need for fees during transaction processing, which is a huge advantage when applied in business. The IOST Foundation provides support from the Foundation’s engineers in the development of the platform, advice on product and business model building, and marketing.
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