This chapter examines the key role of fintech, like blockchain technology, in inventory and supply chain management and how it will lead to sustainable finance, with a focus on circular economy growth and sustainability. It focuses on how Blockchain integration promotes improved supplier relationships, helps in streamlining logistics, provides greater fraud protection, and optimal resource utilization, all of which are consistent with circular economy concepts. Furthermore, the chapter highlights the relationship between blockchain and sustainable practices, which can lead to sustainable finance, demonstrating how it fosters closed-loop finance, supply chains, waste reduction, and innovative business ideas or business models such as Product-as-a-Service (PaaS). Rising tendencies such as interoperability between blockchains, the integration of the internet of things (IoT) for real-time monitoring, and inexperienced blockchain projects geared toward reducing power intake are also mentioned. The chapter concludes by emphasizing blockchain’s capacity as a catalyst for sustainable, resilient, and destiny-driven supply chain ecosystems, paving the way for worldwide economic and environmental transformation.