Blockchain-Based Supply Chain Management is a novel approach to enhancing the transparency, security, and trustworthiness of supply chains. In this study, we explore the design and implementation of a blockchain-based system that enables manufacturers, suppliers, and customers to collaborate seamlessly in tracking and verifying product information. The proposed system utilizes the intrinsic characteristics of blockchain, including decentralization, resistance to tampering, and transparency, to mitigate counterfeiting and establish trust within the supply chain.The proposed system leverages blockchain's inherent features, such as decentralization, tamper-resistance, and transparency, to reduce counterfeiting and build trust in the supply chain. We discuss the architecture and key components of the system, including the role of SQL databases and Metamask wallet integration. Additionally, we highlight the process flow, from manufacturers assigning unique serial numbers to customers verifying product authenticity through QR code scans. This research presents a comprehensive solution for supply chain management, offering potential applications beyond product tracking, including in banking, healthcare, and e-commerce. Key Words: Blockchain, Supply Chain Management, Counterfeiting, Transparency, Product Authentication