A Decentralized Blockchain-Based Marketplace for Transparent Agricultural Supply Chain and Secure Peer-to-Peer Transactions

Abstract

The agricultural sector plays a crucial role in the global economy, yet it faces multiple
challenges such as lack of transparency, inefficient supply chains, and insecure
transaction mechanisms. Traditional agricultural marketplaces often involve
intermediaries, leading to reduced profits for farmers and increased costs for buyers.
Additionally, the absence of secure and transparent transaction systems can result in
fraud and data manipulation. To address these challenges, this project proposes a
Blockchain-Based Secure Agricultural Marketplace System developed using the Django
web framework.The system enables direct interaction between farmers (sellers) and
buyers, eliminating intermediaries and ensuring fair trade. Farmers can register, upload
crop details, and manage their products, while buyers can search, view, and purchase
crops through a user-friendly interface. The platform incorporates role-based access for
administrators, sellers, and buyers, ensuring proper system management and control.
A key feature of the system is the integration of blockchain technology for secure and
transparent transactions. Each transaction is recorded as a block containing essential
details such as sender, recipient, amount, timestamp, and cryptographic hash. The
blockchain ensures immutability, meaning that once a transaction is recorded, it cannot
be altered or deleted. This enhances trust among users and reduces the risk of fraudulent
activities.The system uses Python-based Django for backend development, providing
robust database handling and secure authentication mechanisms. SQLite or other
relational databases are used to store user data, crop information, and transaction records.
The blockchain module is implemented using a custom Python class that simulates core
blockchain functionalities such as block creation, transaction recording, and hash linking