Inspiration

Climate change is one of the biggest global challenges of our time. Many people want to live more sustainably, but tracking daily activities and understanding their carbon impact can feel overwhelming. Our inspiration was to make this process simple, engaging, and trustworthy combining AI, gamification, and blockchain to create real incentives for eco-friendly living.

What it does

EcoLedger is a real-time sustainability tracker that allows users to:

Log activities (e.g., driving, recycling, energy use).

Use AI-powered calculation to estimate emissions and environmental impact.

Earn points and climb leaderboards to compete with friends or communities.

Mint blockchain certificates (NFTs) as proof of their sustainable actions.

Collect ECO tokens as rewards for eco-friendly behavior.

By combining AI + blockchain transparency, EcoLedger transforms sustainability into something measurable, shareable, and verifiable.

How we built it

Frontend: React + TailwindCSS for a clean, responsive UI.

Backend: Node.js + Express for APIs and logic.

Database: Supabase for real-time data storage and authentication.

Blockchain: NFT minting & token rewards to ensure tamper-proof verification.

AI: Carbon activity analyzer that auto-calculates emissions from natural language input.

Hosting: Vercel / Render for deployment.

Challenges we ran into

Ensuring real-time updates across users for leaderboards.

Integrating AI activity parsing to make carbon calculation user-friendly.

Securing private keys and API secrets during deployment.

Making the blockchain integration seamless for non-technical users.

Accomplishments that we're proud of

Built a working MVP with AI calculation, blockchain minting, and real-time leaderboards.

Designed a gamified sustainability experience that rewards eco-actions.

Successfully deployed the app so others can try it out.

What we learned

How to integrate AI + blockchain into a single user experience.

The importance of clean UI/UX in driving adoption of sustainability tools.

Best practices for managing secrets (.env) securely while deploying to the cloud.

What's next for EcoLedger

Expand ECO token use cases (marketplace, eco-partners, community rewards).

Add mobile app version for wider accessibility.

Explore partnerships with schools, NGOs, and local governments for real-world adoption.

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Updates

posted an update

EcoLedger Update — Smarter Carbon Tracking & NFT Rewards

Posted by Linford Musiyambodza – October 6, 2025

EcoLedger is growing fast! We’ve improved the carbon activity tracking system, allowing users to easily log daily eco-actions and instantly estimate their CO₂e footprint using AI.

New Features:

Real-time emission calculations for activities like transport or energy use

Basic blockchain NFT minting for eco-achievements

Refined user interface with better error handling (fixed user_id ambiguity bug)

Next Steps:

Add wallet verification before minting NFTs

Store minted NFT data in the EcoLedger database

Introduce user leaderboards and achievement badges

EcoLedger continues to merge AI + Blockchain to build a transparent, gamified sustainability experience.

Stay tuned — more updates coming soon

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