Preface: Huge medical and health data were originally stored in the databases of various hospitals. This traditional centralized storage method is extremely vulnerable to loss, modification and attack. According to US Health and Services data, in 2015 alone, medical record data was destroyed 112 million times by hacker incidents. Blockchain can use features such as anonymity and decentralization not only to protect patients’ privacy and data security, but also to store and share these personal health data in real time.
Before the application of blockchain in the field of personal health data, there were two large-scale data breaches: Anthem leaked the records of 80 million patients and employees, and UCLA Health leaked the records of 4.5 million patients.
The public pays more and more attention to medical treatment, and contradictions are also increasing. The use of blockchain technology to construct electronic medical records and disease data overcomes the lack of unified standards and easy leakage of traditional data platforms. In the past two years, more and more medical projects have applied blockchain technology.
Alibaba Health cooperates with Changzhou City on the “Medical Consortium + Blockchain” pilot project, which applies blockchain to the underlying technical architecture system of the Medical Consortium to achieve safe and controllable data interconnection between medical institutions. Use a low-cost and high-security method to solve the long-term problems of information islands and data security that have plagued medical institutions.
Sunshine Insurance cooperates with Ciming Medical Examination and Sunshine Fusion Hospital. Based on the blockchain platform provided by Bubi Network Technology Co., Ltd. and Beijing Link Win-Win Information Technology Co., Ltd., it launched the first personal health in the blockchain environment in mainland China. Data authorization inspection certificate-health introduction letter. This innovation breaks through the platform barriers and builds an efficient and reliable personal health data sharing network, so that customer experience reports can be legally, safely and conveniently circulated, allowing multiple institutions to better serve common customers.
Blockchain applications in the field of personal health data:
1. Prevent data leakage through multi-signature private key and encryption technology. After the data is placed on the blockchain, multi-signature technology is used to allow authorized people to access the data. This kind of technology has formulated strict rules for accessing data, and it must be authorized to proceed. Whether doctors, nurses, or patients themselves need to obtain permission, two of the three persons can be authorized to proceed.
2. After the data is encrypted, it is written into the Bitcoin blockchain, and the data accuracy is ensured by the time stamp. These written records and data cannot be tampered with at all, can only be used and cannot be copied, and cannot be read with permission. This advantage of blockchain avoids events such as medical data fraud and tampering with records, and the correctness and uniqueness of medical data are guaranteed, so that patients can receive follow-up treatment more efficiently.
3. Blockchain technology enables complex management rights of multiple private keys. Through a smart contract, multiple private keys can be assigned to a single piece of information data, and rules can be set to access the data, and the private key must be authorized to proceed. The blockchain technology ensures the standardization and legitimacy of personal sensitive data in the use of the entire network.
4. Provide personal authorization for health data. When a customer needs to provide a health certificate, a third party can be authorized to check reliable health data online, and health can be certified online without going to a hospital or a physical examination center. Such as qualification examination, bank credit, insurance purchase, etc., do not need to repeat the physical examination. The personal health data authorization check certificate under the blockchain environment realizes the sharing of health data, which not only reduces the economic burden, but also reduces the waste of resources, and also improves the efficiency of related institutions. During the authorization process, the customer’s original data will not be leaked to a third party and will not leave the location of the data. The openness, transparency, traceability, and non-tampering characteristics of the blockchain ensure the authenticity of data and prevent the risk of malicious use of data and leakage of user privacy.
In the future, there will be more projects related to personal health data. The use of blockchain technology can make the medical market more standardized, healthier and more reasonable. It will ultimately reduce the credit risk in the medical industry and improve the effectiveness of people’s medical treatment.