The BCB Blockchain Observer Node is a pivotal component of the BCB Blockchain ecosystem, designed to enhance the development of smart city solutions. Built on the Tendermint framework, it ensures immediate authentication and prevents forking, thereby bolstering the efficiency and security of business operations. Developed in Golang, the node employs a PBFT-DPOS consensus algorithm for swift information dissemination and block consensus. It supports Ethereum's EVM and utilizes Docker containers for smart contract execution, facilitating seamless development using Solidity and Golang. Key Features and Functionality: - Immediate Authentication: Ensures rapid verification processes, enhancing transaction speed and reliability. - Fork Prevention: Maintains blockchain integrity by preventing chain splits. - PBFT-DPOS Consensus Algorithm: Combines Practical Byzantine Fault Tolerance with Delegated Proof of Stake for efficient consensus. - EVM Compatibility: Supports Ethereum Virtual Machine, allowing for the execution of Ethereum-based smart contracts. - Docker Integration: Utilizes Docker containers for flexible and isolated smart contract operations. Primary Value and User Solutions: The BCB Blockchain Observer Node addresses the need for a robust and efficient blockchain infrastructure tailored for smart city applications. By providing immediate authentication and preventing forking, it ensures the reliability and security essential for urban development projects. Its compatibility with Ethereum's EVM and support for Docker containers offer developers a versatile platform for creating and deploying smart contracts, streamlining the development process and fostering innovation in smart city solutions.