Medical data link is a public healthcare data transmission chain, abbreviated as MENT, which is a blockchain based healthcare data sharing platform centered on the digital health industry. It fully utilizes the high reliability, low-cost security, distributed ledger, and decentralized knowledge of blockchain, adopts a new smart contract architecture design, integrates advanced Internet of Things technology, realizes comprehensive reform of the healthcare industry system, and reconstructs the healthcare ecosystem, Promote the transformation of human medical services.MENT adopts a parallel main chain architecture, which allows for flexible selection of consensus mechanisms based on the characteristics of the business main chain. The consensus mechanism of the business main chain only affects its own business and is independent of other main chains, forming its own logical space. The consensus mechanism of the business main chain supports component insertion and extraction mode, which can be flexibly replaced according to the needs of digital healthcare. After a smooth transition, it can continue to operate, meeting the requirements of not only the development of digital healthcare mode, but also integrating consensus mechanisms such as POW, POS, DPOS, PBFT, RAFT, etc. to develop a consensus mechanism that conforms to specific digital healthcare logic for enterprises....