The rapid expansion of e-commerce in the agricultural sector has underscored the need for robust food safety mechanisms that can match the pace of online transactions and global supply chains. This paper presents a comprehensive study on the implementation of a Blockchain-based Food Safety Assessment System (BFSA) for agricultural products in e-commerce platforms. Leveraging the immutable, decentralized nature of blockchain technology, the BFSA system aims to enhance transparency, traceability, and trust in the food supply chain, from farm to consumer. The methodology involves integrating blockchain with existing supply chain operations of e-commerce platforms, ensuring every transaction and movement of goods is recorded in a tamper-proof ledger. This includes detailed logging of cultivation, harvesting, processing, packaging, and shipping data, enabling real-time visibility and verification of food safety standards and origin. The paper discusses the development of smart contracts to automate compliance checks and certifications, facilitating seamless and efficient operations across the supply chain. Our analysis reveals that the BFSA system significantly reduces the risks associated with food fraud, contamination, and recalls by providing stakeholders with access to verified product histories. The study also explores the challenges associated with implementing blockchain technology in existing supply chains, including technical integration, stakeholder buy-in, and scalability issues. The paper concludes by highlighting the potential of blockchain technology to revolutionize food safety in the e-commerce sector, making it a critical tool for ensuring the integrity of global food supply chains in the digital age.