HCASH is a new decentralized, open source, cross system digital Cryptocurrency, which will become the connection point of all blockchain systems, allowing the free exchange of value and information between different blockchain systems.HCASH completed the HCASH2.0 main chain upgrade in August 2018- officially upgrading the original Hshare chain to the HyperCash main chain (HC), and jointly forming a dual chain structure with the HyperExchange main chain (HX) incubated by HCASH. As the two core hubs of the HCASH ecosystem, they will collaborate with each other to establish value interconnectivity between the HCASH ecosystem and blockchain systems such as BTC and ETH, as well as non blockchain distributed ledgers (DAGs).The HC chain fully realizes quantum resistance and privacy protection, supports a hybrid consensus of PoW+PoS, focuses on deep research and development of blockchain underlying technologies, and provides HyperExchange with the value tokens needed to maintain system stability. At the same time, HCASH will upgrade all the technical features proposed by HC: anti ASIC, HAILP (HCASH AI Lighting Protocol) and smart contracts have been included in the next development plan. HyperCash will work with HyperExchange to provide HCASH with a solution for inter blockchain value interconnection, and on this basis, realize the free flow of information and value between blockchain and non blockchain distributed ledgers (such as DAG), laying the foundation for building a multi asset distributed business application ecosystem....