On November 17, Li Guangqian, a researcher at the Development Research Center of the State Council, said that the definition of blockchain comparison criteria is as follows: 1. Blockchain is an application agreement that promotes the transition of the Internet from “information” to “value”. 2. Blockchain is a kind of recording method. A blockchain is a chained data structure in which data blocks are combined in a chronological order in a sequential manner. 3. Blockchain is a technical solution. Blockchain is not a single information technology. It relies on existing technologies to create original combinations and innovations to achieve previously unrealized functions. 4. Blockchain is a management paradigm. Blockchain technology is a decentralized, non-trust accumulation of credit establishment paradigm. It is subversive to the social management model and law, and the blockchain brings Change is worth studying and has an important impact on the way people interact with each other. In addition, Li Guangqian said that the characteristics of the blockchain can be four: multi-party writing, joint maintenance; public account book; decentralization; not tampering.