DHC (Dignity Health Chain) is an applied blockchain project launched by Dignity Health non-profit public welfare organization in the United States. It uses blockchain technology to achieve a patient-oriented comprehensive medical information management system that existing medical information systems cannot achieve. In other words, through the establishment of a Ideal type personal health record platform, all the requirements for the reliability, transparency and security of the medical care information system can be met to achieve the safe exchange of reliable medical information.Dignity Health Chain is a decentralized healthcare service platform that breaks the traditional service model centered around medical institutions and establishes a blockchain based medical data value sharing network, allowing everyone to access global high-quality medical resources and services....