MyGreenChain Passport

Digital Product Passports for a Sustainable Future

A blockchain-based platform that creates NFT digital passports for products with AI-powered sustainability scoring and full lifecycle tracking. Built for IEEE ClimateChain Global Hackathon 2026.

🌍 Problem Statement

Consumers cannot verify corporate sustainability claims, and it's difficult to trace product environmental impact from production to disposal. Greenwashing undermines legitimate environmental efforts and prevents informed purchasing decisions.

✨ Solution

MyGreenChain Passport provides:

• Blockchain-Verified Passports: Immutable NFT-based product records on Polygon
• AI Sustainability Scoring: Automated environmental impact analysis (0-100 score)
• Full Lifecycle Tracking: From production through recycling with carbon footprint updates
• Consumer Transparency: QR code scanning for instant sustainability verification
• Manufacturer Trust: Prove environmental commitment with verifiable data

🎯 Hackathon Track

Sustainable Supply Chains - Increasing transparency and accountability in product sustainability claims.

Contract Details:

• Network: somniaTestnet
• Contract Address: 0x6662CbdB03CBa375e2697c65A8F2d53f5135CA6F

🏗️ Architecture

Smart Contracts

• ProductPassport.sol: ERC-721 NFT contract with sustainability data
• Network: Polygon Mumbai/Amoy Testnet
• Features: Product registration, lifecycle events, recycling tracking

Frontend

• Next.js 16 with App Router and TypeScript
• Tailwind CSS v4 for styling
• Wagmi + Viem for Web3 integration
• QR Code generation for consumer scanning

AI Scoring Algorithm

• Rule-based sustainability calculation
• Factors: Carbon footprint, materials, origin, recycling status
• Real-time score generation (0-100 with A+ to F grades)

Built With

• hardhat
• javascript
• nextjs
• solidity
• somniatestnet
• tailwindcss
• typescript
• vercel