Kcash Digital Currency Wallet (hereinafter referred to as Kcash) is a wallet application that bridges the digital currency world with the physical world. It is designed to address challenges such as the inconvenience of managing multiple digital currencies, the complexity of exchange and transaction processes, inefficient value transfer, insufficient blockchain performance, and limited application scenarios. Kcash features unique cross-chain and cross-contract technologies, combined with its own high-performance public chain, to provide robust infrastructure for the digital currency space and promote its application and development.