Final YearAdvancedBlockchain 3-4 months
Blockchain Supply-Chain Provenance Tracker
A system that records a product’s journey (origin → manufacturer → distributor → retailer) on a blockchain so consumers can verify authenticity by scanning a QR code.
SolidityPolygonHardhatReactethers.jsIPFS
Find GitHub repos & source code →How to build it — step by step
- 1Contracts: Model products and custody transfers on-chain; each handoff appends a signed event.
- 2Roles: Authorise supply-chain participants; only the current custodian can transfer.
- 3Consumer view: Generate a QR per product that opens a public, verifiable provenance timeline.
- 4Media: Store certificates/photos on IPFS and reference their hashes on-chain.
Key features to implement
- ✓Immutable custody trail
- ✓Role-based transfers
- ✓QR-based authenticity check
- ✓Tamper-evident certificates
- ✓Public provenance timeline
💡 Unique twist to stand out
Add IoT integration where a sensor logs temperature/humidity during transit and flags cold-chain breaches on-chain.
🎓 What you'll learn
Smart contracts, supply-chain modelling, decentralised storage, and dApp UX.