HOH is a distributed data storage protocol based on blockchain technology. Trying to create a blockchain asset platform based on energy data to promote energy conservation, environmental protection and efficient energy transactions. HOH is a commercialized public chain based on smart energy cities. The design of HOH ecology also follows the principles of energy saving and environmental protection. With the help of blockchain technology, it has the characteristics of decentralization, trustlessness, distributed reliable database, and programmable. A series of feasible solutions are provided for the development bottlenecks encountered by the current smart energy city Internet in terms of trust mechanism, value transfer and interaction efficiency.