PopularMajor Project
Blockchain
Blockchain Certificate Verification
Tamper-proof academic credentials on an EVM chain
- Solidity
- Hardhat
- Next.js
- ethers.js
- +2
₹4,299₹7,499
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Blockchain · Major Project
Supply Chain Traceability on Blockchain
Tracks each product from maker to shelf, looked up by scanning a QR
3-4 weeks build
Overview
Manufacturers, distributors and retailers each hold a role in the contract, and every handover of a product is written as a signed, timestamped event. Each item gets a QR code; scanning it opens a public page that replays the whole journey straight from chain data. Role checks stop anyone recording a step they are not entitled to. Runs on a local Hardhat chain or Sepolia.
What makes it stand up
- 01Role-based access for manufacturer, distributor and retailer
- 02Every custody handover stored as an on-chain event
- 03QR code per item linking to a public provenance page
- 04Event-log history read directly from the chain
- 05Local Hardhat or Sepolia deployment with test accounts
Module breakdown
- 01
Roles
OpenZeppelin AccessControl grants each participant a role.
- 02
Product registry
Registers items with batch, origin and metadata hash.
- 03
Custody log
Records each transfer between participants as an event.
- 04
QR service
Node.js generates QR codes that resolve to the item page.
- 05
Lookup page
React timeline rebuilt from the item's event history.
After this, you will be able to
- Explain why events are cheaper than storage for history
- Defend how role checks prevent a forged custody step
- Demo scanning a QR and replaying a product's journey
Technology stack
- Solidity
- Hardhat
- ethers.js
- React
- Node.js
- MetaMask
- Level
- Major Project
- Domain
- Blockchain
- Build time
- 3-4 weeks
- Difficulty
You receive
- Complete, commented source code
- 60-90 page project report (IEEE format)
- Editable presentation deck
- Architecture, ER and UML diagrams
- Local setup and deployment guide
- Sample dataset or seed data
- Viva question bank with answers
- One 45-minute walkthrough call
- 30 days of doubt-clearing support