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Blockchain
Blockchain Certificate Verification
Tamper-proof academic credentials on an EVM chain
- Solidity
- Hardhat
- Next.js
- ethers.js
- +2
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Blockchain · Major Project
Decentralised Crowdfunding Platform
Campaigns whose funds unlock milestone by milestone as backers vote
3-4 weeks build
Overview
Creators open a campaign with a goal, a deadline and a list of milestones, and backers pledge test ETH through MetaMask. Money sits in the contract rather than with the creator, and each milestone payout needs a majority of backers, weighted by pledge, to approve it. Missed goals refund automatically. Everything runs on Sepolia or a local Hardhat chain, never with real funds.
What makes it stand up
- 01Escrowed pledges held by the contract, not the creator
- 02Milestone release gated by a pledge-weighted backer vote
- 03Automatic refunds when a campaign misses its goal
- 04Campaign images and descriptions pinned to IPFS
- 05Deploys to Sepolia or local Hardhat with test ETH only
Module breakdown
- 01
Campaign factory
Deploys and indexes one campaign contract per creator.
- 02
Pledging
Accepts test ETH and records each backer's contribution.
- 03
Milestone voting
Opens a vote per milestone and releases funds on approval.
- 04
Refunds
Lets backers withdraw their pledge after a failed campaign.
- 05
Frontend
React pages for browsing, pledging and voting via MetaMask.
After this, you will be able to
- Explain why holding funds in the contract removes trust in the creator
- Defend the pull-over-push refund pattern against reentrancy
- Demo a campaign from pledge to milestone payout on a testnet
Technology stack
- Solidity
- Hardhat
- ethers.js
- React
- MetaMask
- IPFS
- 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