Circular supply chain management is required for firms to transition from a linear make-use-dispose eco-nomic model to a more sustainable circular economy. However, it faces the critical challenge of tracing the reuse of materials over multiple life cycles involving a variety of stakeholders. Blockchain technology can help manage the complexities of circular supply chain management. This paper takes the first step in developing a system architecture of blockchain-enabled circular supply chain management in the fast-fashion industry. The system architecture was validated by two experts in blockchain technology and supply chain management. Managerial implications are discussed for implementing blockchain technology to advance the circular economy agenda.