Blockchain for sustainability by enabling transparent tracking, efficient energy management, and responsible supply chains. It ensures traceability of raw materials, carbon credits, and ethical sourcing by recording immutable, verifiable data. In renewable energy, blockchain allows peer-to-peer energy trading and real-time monitoring of emissions. Smart contracts automate eco-friendly incentives and compliance reporting. By promoting transparency and accountability, blockchain empowers organizations and consumers to make greener choices. Industries like agriculture, manufacturing, and energy leverage blockchain to enhance sustainability efforts and align with ESG goals.