ZeTo is an open medical information service platform based on EOS blockchain 3.0 technology. ZeTo integrates medical information scattered across different medical institutions, forming a complete personal medical information database. ZeTo returns ownership and control of the information to the user. Users can set or authorize different permissions through the ZeTo system as needed to fully control their medical information. Medical service providers certified through the ZeTo system can add new medical information to users' personal medical records with user authorization, enabling data to be linked instead of being stored in the medical institution's database, achieving the integration of fragmented information into a complete information database....