Recently, the original chain has signed an agreement with the Decentralized Identity Foundation (DIF) and formally joined the alliance. DIF is an alliance dedicated to improving identity system interoperability and standards based on blockchain establishment, including large companies such as Microsoft, IBM, Accenture and HYPER LEDGER, BLOCKSATCK, Sovrind and other blockchain projects. . The organization has said in a blog that it is working on a set of specifications and reference implementations for creating blocks, such as personal data storage and decentralized identification. Compared with the original chain in Europe's largest hackathon last year, it launched an identity system-related challenge for global hackers. It believes that this field will probably be one of the most widely used areas of blockchain technology, and it is also more than the original chain. To carry out research and development in the field of decentralized identity systems, we are looking forward to the establishment of such a system to ensure the safety and ease of use of citizens' personal information.