According to the Securities Daily News, the blockchain is a hotspot of technology in recent years, and the Internet giants have made a lot of research and development on the blockchain. Internet giants such as Baidu, Alibaba, Tencent, and Jingdong (hereinafter referred to as BATJ) are now looking for blockchain+solutions in the fields of finance, medical care, e-commerce, public welfare and legal affairs, and have begun small-scale pilot applications. In fact, the "Securities Daily" reporter noticed that Internet giants such as BATJ are also cleverly avoiding each other's "hard shackles", and the direction of landing is different. For example, Alibaba's blockchain application scenario focuses on how to solve public services. The actual problem, Baidu blockchain layout focus is the financial sector, Tencent blockchain application scenarios focus more on the judicial and tax fields, Jingdong is more focused on supply chain management and government.