Food Security : Food Supply Chain Using Blockchain

Abstract

In recent years, ensuring transparency, security, and
traceability in supply chain management has become a
critical need, especially in sectors like agriculture and
food distribution. This project introduces a
decentralized, blockchain-enabled Food Supply Chain
Management System that leverages Ethereum smart
contracts and Python (via Django) to monitor, record,
and verify transactions involving farmers, producers,
distributors, and consumers in a tamper-proof manner.
The core of this system is a smart contract deployed on a
local Ethereum blockchain (Ganache), which securely
stores user credentials, product information, and
purchase transactions. Using Web3.py, the application
interacts with the smart contract to perform functions
such as product addition, purchase tracking, status
updates, and QR code generation for verification. The
blockchain ensures that once data is recorded, it cannot
be altered, thus enhancing data integrity and trust
between stakeholders. Each product added by a farmer
or producer is assigned a unique QR code containing
details such as owner, product ID, description, and
transaction history. These details are displayed along
with product images and are accessible to consumers
and distributors through dedicated user interfaces. The
Django web framework provides intuitive screens for
different user roles, ensuring seamless interaction and
real-time updates. By automating traceability and
reducing reliance on centralized systems, this project
demonstrates the potential of blockchain in
transforming traditional food supply chains into
transparent, efficient, and secure ecosystems. It ensures
that all participants in the supply chain—from the
origin of the product to its end consumer—are
accountable and verifiable at every step.