In this era of globalization, supply chain management approaches must prioritize the use of technology while also addressing environmental challenges. In this research, we look at how blockchain technology (BT) might help with sustainable and environmentally friendly supply practices throughout different stages of SCM. More research needs to be conducted that examines green supply chains in detail for environmental performance, particularly about BT, and this study will help to fill that need. A company's environmental performance and the impact of BT on several green supply chain phases are the foci of this research. A further important objective of the project is to examine the effects on the environmental performance of the various links in the green supply chain. This study uses a PLS-based structural equation modeling approach to explore the linkages between BT adoption and green supply chain practices being implemented in stages. Employees of medium-sized manufacturing enterprises in India provided the data. The findings demonstrate that green supply chain management practices and blockchain technology adoption lead to better environmental performance. The study also highlights the multifaceted influence of blockchain on ecological performance by showing a positive association between various phases of the green supply chain and its integration. According to the findings, sustainable supply chain practices and improved performance may be within reach with the support of BT.