BCS Using self-optimized POBC (goodwill certification) as the underlying consensus mechanism and introducing the real-world credit system to provide better operation and support for an anonymous blockchain network. BCS Focus on the new retail industry with rich landing scenarios, aiming at creating a supply chain traceability, quantifiable credit, transparent data, consumer shopping, membership services, precision marketing, centralized procurement scenarios in one, forming online e-commerce transactions, offline shopping experience, and building a new retail public chain ecology with multi-participation and multi-benefit.