Gives attendees a verifiable badge for each event
Intermediate24h1–3
SolidityOpenZeppelinNext.js
14/20On-Chain Event Tickets
Issues tickets that can’t be faked and resell only at fair prices.
Intermediate36h2–3 people15/20 fit
Build On-Chain Event Tickets for college fests and meetup organisers in ~36h with 2–3 people. Stack: Solidity + OpenZeppelin + viem + Next.js.
Why it wins: Smart-contract rules solving a familiar pain.
Build flow
01 · Problem
Event tickets get faked or scalped at many times face value.
02 · Solution
Tickets as NFTs with a capped resale price enforced in the contract; QR check-in at the door.
03 · Build
- 1ERC-721 contract with cap
- 2Deploy to testnet
- 3Wallet connect + mint UI
- 4Check-in scanner
04 · Demo
Mint a ticket on a testnet → try reselling above cap → transaction rejected.
MVP checklist
- Mint tickets
- Resale price cap
- QR check-in
- Organiser dashboard
Tech stack
| Tech | Role | |
|---|---|---|
| Solidity | Smart contracts | Chain |
| OpenZeppelin | Audited contract library | Chain |
| viem | Ethereum client | Chain |
| Next.js | Frontend + API routes | Web |
Reference repos
Open-source projects you can build on. Links checked 2026-10-31.
Related ideas
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Beginner10h1–2SolidityOpenZeppelinNext.js16/20Holds payment in escrow and releases it per approved milestone
Intermediate36h2–3SolidityFoundryviem15/20