Medical Information Sharing Applying Blockchain Technology

. In this paper, we proposed a method of medical information blockchain technology to the medical field and using it for PHR applications. Here we propose a structure and technology for various applications of hospital data for remote control and sharing of various PHR data for the efficiency of medical information. Blockchain technology is a distributed database, which is a ledger technology that records changes, for example, adding information, revising, and deleting within the unit of blocks and share. The form used here means a list derived from medical practice, but the shared information applied with blockchain technology can be applied to all data. And blockchain technology is applied to PHR service to transmit and store medical information to medical institutions that use existing information to utilize medical information. In addition, medical information can affect distributed databases that provide storage and backup/restore functions. Through this, the server for the blockchain of each participating institution of the blockchain network can serve as an interface for the utilization of medical information. Blockchain also manages access, processing, and disposal regarding medical information, providing verification and inspection of medical information along with maintaining the integrity of medical information and satisfying the previously recorded security requirements.