Problem
Plogging — jogging while picking up litter — lacks a digital reward layer that could recognise and sustain participation. Minting environmentally themed NFTs as proof of activity gives participants a collectible, transferable record. Building this on Polygon rather than Ethereum mainnet keeps minting fees compatible with small, frequent rewards.
Approach
- Polygon over Ethereum L1 to make per-reward mint cost negligible.
- ERC-721 for uniqueness of each plogging reward NFT.
- Hardhat for contract development, testing, and deployment.
- Vanilla HTML/CSS/JavaScript frontend for the minting page and promotional site to keep the stack lightweight.
- Cat theming for brand memorability independent of the underlying activity.
Implementation
NFT Smart Contracts
ERC-721 contract deployed on Polygon Mainnet, issuing cat-themed collectible NFTs as plogging rewards. Contract development and deployment handled with Hardhat.
Minting Interface
Web-based minting page with wallet connection to Polygon, real-time minting status, and transaction tracking.
Platform Website
Promotional landing page for the PloggingCats project covering community engagement and plogging activity, built with HTML, CSS, and JavaScript for responsive rendering.
Outcome
- ERC-721 reward NFT contract live on Polygon Mainnet.
- Minting page with Polygon wallet connection and transaction feedback.
- Promotional site describing the plogging activity and community model.
Technologies
- Smart Contracts: Solidity, Hardhat, Polygon
- Frontend: HTML, CSS, JavaScript
- Network: Polygon (Mainnet)
- Standard: ERC-721 NFT