E-CARE (easy to see) brings together front-line technicians in the blockchain industry and experts in various industries in the medical and health field. new ecology. E-CARE makes full use of the characteristics of blockchain's high-trust consensus, low-cost security, distributed ledger and efficient link multi-center, adopts a new smart contract architecture design, and takes data exchange and speeding up the information flow of the medical and health industry as its tasks , innovatively realizes the trusted exchange and verification of medical data in the medical and health industry without affecting data ownership.