UCO Network is a blockchain-powered ecosystem focused on revolutionizing the used cooking oil (UCO) supply chain through transparency, traceability, and sustainability. Recognizing the global environmental and energy challenges, UCO Network provides a digital platform where businesses, households, and industries can securely record, trade, and track used cooking oil collection and transformation into biofuels. The platform leverages blockchain’s immutable ledger to ensure authenticity, prevent fraud, and enhance trust among stakeholders such as collectors, biodiesel producers, regulators, and end-users. UCO Network’s vision is not only environmental but also economic, as it seeks to create fair markets for renewable energy feedstocks and incentivize households and businesses to contribute to the circular economy. By integrating smart contracts, tokenization, and IoT-enabled logistics, the platform ensures efficient supply chain management and real-time monitoring. It also fosters compliance with international sustainability regulations, making it easier for companies to demonstrate their environmental responsibility. With the rising demand for cleaner energy, UCO Network stands at the intersection of blockchain innovation and green technology, paving the way for a decentralized, eco-friendly future that supports global climate goals while driving profitability and social good.