Babbitt reported that the "2019 World Blockchain Conference·Wuzhen" hosted by Babbitt was held at the Wuzhen Internet International Convention and Exhibition Center from November 8th to 9th. On the afternoon of the 9th, "deciphering the 5G+ blockchain, for fashion, is it practical?" At the roundtable forum, Chainlink founder and CEO Sergey Nazarov said that most of us are working with telecom companies to introduce blockchain. We worked with them and we found that they focused on three points: The first thing is the security of the sim card, which can make it safer through the blockchain, and even make the sim card theft almost impossible. Therefore, in the 5G industry, the density and security of the sim card is very important. On the other hand, the data of the Internet of Things, with the blockchain, the data of the Internet of Things can become more accurate and the quality can be higher. In the communication between the telecommunications company and the machine, the blockchain is very necessary, and this is also an important step in 5G. Therefore, in the architecture of the Internet of Things and the telecommunications network, their services need to be guaranteed, that is, several percent of the network is available, which is very important. Therefore, through the blockchain contract and the certification of the contract, etc., it can be placed on the chain, which can greatly improve efficiency.