Smart Application Chain (SAC) is the fundamental currency in the smart application chain ecosystem, which can circulate in the SAC ecosystem. SAC connects all applications on the SAC intelligent application chain, bridging the value silos between applications, and building a blueprint for the future blockchain intelligent economy. As a decentralized digital Cryptocurrency, it is specially designed for SAC ecological applications. The SAC intelligent application chain aims to create a developer friendly public chain access system, providing developers with complete KYC tools, user system, and application management suite....