Attendify
Prove you were there — forever.
Created on 9th August 2025
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Attendify
Prove you were there — forever.
The problem Attendify solves
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Permanent Proof of Attendance
People can use it to have a verifiable, tamper-proof record of their participation in events — something paper tickets or QR codes can't guarantee. -
Secure & Forgery-Resistant
Blockchain ensures attendance records cannot be altered or faked, making it safer than traditional check-in systems. -
No More Lost Tickets
NFT badges live in the attendee's crypto wallet, meaning they can't be misplaced, damaged, or forgotten like paper tickets. -
Better Engagement
Organizers can reconnect with verified attendees and offer personalized invitations, rewards, or discounts for future events. -
Portable & Universal
Attendees can showcase their badges across platforms — as credentials, collectibles, or part of their online identity.
Challenges we ran into
- Wallet Connection Issues
At first, MetaMask wasn't detecting our dApp in the browser because window.ethereum was undefined. I discovered that MetaMask needs to be installed as a browser extension, and the site must be served over http://localhost or HTTPS for detection to work.
Solution: Installed MetaMask in Chrome, ensured our development server was running locally, and added error handling in useWallet.ts to guide users if MetaMask isn't found.
Tracks Applied (1)
Best Web3 Solutions
ChatAndBuild
Technologies used