The You Token Digital Asset Application System (referred to as YTK), is a blockchain financial ecosystem with a compound business model and practical applications. YTK is an ecological platform based on the finance industry, developed by top global technology research and development, covering digital payment solutions for all fields related to the financial ecosystem. It provides real-time seamless exchange and transaction payments, dedicated to creating the worlds first truly integrated blockchain financial eco APP featuring a compound business model and practical applications. Based on peer-to-peer network technology, it builds a new global financial ecology utilizing blockchain and smart contract technologies.