Health Alliance Token (abbreviated as HAT) is the only value circulation token in the HAC health alliance chain.Health Alliance Chain (HAC for short) is based on blockchain, cloud computing, big data and other technologies, with the token economy as the underlying logic, and ‘consensus, co-creation, sharing’ as the core concept, with the mission of ‘Building a new value chain for the global health industry’ to create a digital economy value-added service platform for the global health industry.