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KeY’s crowdsale and the issuance of KeY’ token are to fund the marketing and branding of smartbank project utilizing Ethereum blockchain, as well as the development of the platform itself and the smart contract technology within the platform. Banking services will be subdivided and optimized using blockchain technology. KeY’ token is used to categorize platform charges and service content based on its amount. KeY’ token applies smart contract technology that can create a new customer credit information database such as decentralized lending service.