Blockchain-Based Privacy Preserved Physiological Data Sharing Platform

Wearable devices have significantly impacted precision medicine by providing real-time physiological and behavioral data. This data is crucial for accurate disease diagnosis, monitoring, and improved treatment outcomes. Wearable devices enable personalized health management and prevention programs, particularly being beneficial for chronic disease management. Overall, these devices offer more data and technical support for precision medicine, leading to better-individualized health management and treatment and ultimately improving medical outcomes and quality of life. However, the current device binding requires direct identifiers and grants manufacturers ownership of the generated data, limiting user control and raising privacy concerns. To address this, we propose a blockchain-based platform with two distinct blockchains: decentralized identity and physiological data. Users register decentralized identities on the first blockchain, which are then used for device binding on the second blockchain, enabling de-identified data collection. The platform generates user-specific smart contracts on the Physiological Data blockchain and ensures complete user control over data access. This system enhances the privacy, security, and credibility of users' physiological data, instilling confidence in the use of wearable devices.