Yi Cloud Chain is a value network data focused on a vertical public blockchain, aimed at creating credible data. Peoples daily activities are closely intertwined with the internet. Every time they use the internet, it is recorded. The larger the volume of data, the higher its value. Dominant internet companies, relying on their rich application scenarios and businesses, ingest vast amounts of personal data for their own benefit and gain huge profits. Others who need this data face high costs for data usage and issues regarding data authenticity. Data providers cannot monitor personal data security and do not receive any dividend returns.