This chapter explores how blockchain significantly promotes the smart circular economy by improving transparency, traceability, and efficiency via its integration with technologies such as IoT and AI. Essential characteristics of blockchain, including decentralized governance, immutability, and smart contracts, tackle issues in waste management, tracking product life cycles, and ensuring supply chain transparency. Practical examples demonstrate blockchain’s uses, such as promoting recycling, ensuring ethical sourcing, and managing circular supply chains. Although it has potential, issues like technical restrictions, regulatory obstacles, and financial limitations are examined, along with approaches to address these challenges. Future pathways emphasize the incorporation of blockchain with new technologies, promoting worldwide acceptance, and developing creative business frameworks to enhance sustainability. This chapter provides guidance for companies, government officials, and academics to utilize blockchain for an efficient and sustainable future, highlighting the importance of teamwork and creativity to speed up the shift to a circular economy.