Problem Statement 1

INFO

This problem statement is shared by Sharp Economy - one of the technology partner for HackIndia 2025.

🏆 Work on this problem statement if you want to compete in the $25,000 Prize Pool.

Project: DAA — Decentralized Attendance App

Category: Identity / Education / Infra

Difficulty: Intermediate – Advanced

🧠 Core Idea:

Build a blockchain-based attendance system that eliminates forgery, proxies, and tampering by logging every attendance event on-chain. Every student/employee has a unique wallet address or digital identity, and attendance entries are made through QR scans, NFC tags, or biometric triggers that sign and store data on-chain.

🛠️ Tech Stack Ideas:

• Smart Contracts: Solidity / Cairo (if using Starknet)
• Identity Layer: ENS / World ID / Lens Protocol or phone#-based zkAuth
• Frontend: React or Next.js with EVM wallet (Metamask, RainbowKit)
• Infra: Polygon, Avalanche, Base (for fast + low-fee chains)

🗃️ Data Sources:

• Simulate or use anonymized attendance logs from college CRMs
• Use dummy biometric device outputs (CSV/json of timestamps)

🧩 Bonus Ideas:

• NFT-based “Perfect Attendance” badges
• Generate reports or infographics for teachers/admin
• De-anonymized logs (on-chain hash + off-chain storage via IPFS/Filecoin)