CSD (Central Shopping District Memory Chain) is a decentralized, social, fully open-source platform based on Ethereum. It combines a reserve with other resources and integrates entertainment and consumption in one comprehensive platform. The open-source software designed and released is a branch of the ETH network, forming a form of P2P digital currency. Unlike most currencies, CSD does not rely on specific monetary institutions for issuance. Instead, it is generated through extensive computations based on a specific algorithm. CSD uses the distributed database formed by numerous nodes across the entire P2P network to confirm and record all transactions. It employs cryptographic design to ensure the security of every aspect of the currencys circulation.