HCC (Health care chain) is a large health care industry + blockchain project initiated and operated globally by a technical team composed of large foreign pharmaceutical groups and charitable organizations and a group of technical geek volunteers. The team has been committed to building an independent, closed-loop big health + blockchain ecosystem with three core sectors: HCC (HCC certificate) - medical public chain (HCC public chain) - big health digital asset exchange (HCC network); plan Create a leading, 100 billion-level blockchain ecosystem in the vertical field of healthcare and medical care within 5 years.