Supply Chain Tracking using Blockchain

Inspiration

Supply chains often face issues like data tampering, lack of transparency, and difficulty verifying product authenticity. We wanted a solution that builds trust, offers traceability, and ensures every stakeholder has a single source of truth.

What it does

The system records each product’s journey—from manufacturer to distributor to retailer—on a blockchain. Every update is immutable, time-stamped, and visible to authorized users, enabling real-time tracking, fraud prevention, and product authenticity verification.

How we built it

We used Ethereum/Hardhat for smart contract development, Solidity for defining product lifecycle logic, and a frontend (Next.js) connected via Web3.js. Each supply chain event is captured as a blockchain transaction stored on a decentralized ledger.

Challenges we ran into

Connecting frontend to local blockchain networks Handling transaction confirmations and gas issues Designing a clean workflow for product creation and status updates Ensuring immutability while still allowing flexible role-based operations

Accomplishments that we're proud of

Fully functional smart contract enabling product creation and tracking A working UI that lets users add and update supply chain events End-to-end traceability with tamper-proof blockchain records

What we learned

Smart contract design, events, and role management How blockchain guarantees transparency and immutability Building decentralized applications and debugging network issues Practical understanding of converting a problem into a blockchain workflow

What's next for Supply Chain Tracking using Blockchain

Adding QR code scanning for faster product updates Deploying on a public testnet/mainnet for real-world usage Adding analytics dashboards for supply chain insights

Built With

• ethereum
• next.js
• solidity
• typescript