YBChain (Yun Token) is initiated by the Singapore YBChain Foundation and jointly established by a global team of blockchain technology experts. Yun Token is a cloud data service system based on Blockchain 3.0 technology, aimed at addressing prominent issues in scenarios such as artificial intelligence and big data applications. The system encompasses performance, functional completeness, scalability, regulatory auditability, and user-friendliness. YBChains Blockchain 3.0 adopts a series of innovative technological solutions including the latest hierarchical architectural design, standardized data protocols, network protocols, dual consensus algorithms, distributed storage technologies, and flexible multi-level usage policies. It is dedicated to building a cloud-sharing community scenario. The data application ecosystem established by YBChain will realize greater application value for blockchain cloud data.