Review-to-Earn

Review-to-Earn transforms how online reviews build trust in digital commerce. When shoppers leave reviews on marketplaces like Etsy, eBay, or Amazon, our Chrome extension uses to evaluate review quality and authenticity — rewarding honest, helpful reviewers with PYUSD micro-payments on-chain.

Built a Chrome extension that detects review boxes on marketplaces. When a user posts a review, it’s analyzed for sentiment, relevance, and spam. The backend oracle signs the score using ECDSA, issuing a reward voucher. On-chain, our solidity contracts (deployed on Ethereum Sepolia with hardhat3) verify the oracle’s signature and instantly transfer PYUSD to qualified reviewers. Each campaign is funded through an escrow smart contract, allowing brands to manage budgets and payouts transparently. The stack includes typeScript, react, extension, ethers.js, node.js, hardhat, blockscout mcp. Also by using blockscout sdk, we bind contract event with frontend seamlessly