MetaCow DEX — Social DeFi Trading with Identity and Rewards

Overview

MetaCowDEX is a decentralized exchange that combines token swaps, liquidity provisioning, and social trading into a unified on-chain identity experience. Built for modern DeFi users, it enables trading, earning, following, and building a wallet-based reputation—all in one platform.

• Live Demo: https://metacowdex.vercel.app

• Backend API: Hosted on Render(it will take 50 sec to load ;) )

• Blockchain: BNB Chain Testnet

Deployer Address: 0xF8A440f0c3912F42dF794983B8164cB6572fCBCC
Pair Logic Contract: 0xad546B8Af6dDDc3113705aa3Eb659D67141A264F
Factory Proxy Contract: 0x524Fec22546B087E91D198745CdD6ea94C057D79

Problem Statement

Most decentralized exchanges are functional but lack identity, social interaction, and discoverability. DeFi traders remain anonymous, and there's no way to showcase reputation or learn from others. MetaCowDEX addresses this by introducing wallet-based identity, copy trading, and an interactive social feed to bring visibility and connection into DeFi.

What We Built

MetaCowDEX is more than a traditional DEX. It’s a social-finance platform designed to give users a voice, reputation, and identity based on their on-chain actions.

Core Features

• Token Swapping: Swap any supported ERC-20 pair with estimated output preview

• Liquidity Provision: Add/remove LP and claim earned swap fees

• Copy Trading: One-click replication of top wallet swaps

• Social Feed: Share trades, follow users, and build community insight

• Reputation System: Score based on LP volume, swap activity, and social engagement

• Faucet: Claim test tokens and auto-import to MetaMask

Integration Highlights

• MetaMask SDK: Secure wallet connection and transaction signing

• ERC-20 Support: Full compatibility on BNB Testnet

• Upgradeable Contracts: Built using OpenZeppelin’s Transparent Proxy pattern

Real-World Use Cases

Architecture Overview

• Frontend: React, TailwindCSS, Framer Motion, Ethers.js, MetaMask SDK

• Backend: Node.js, Express, MongoDB, Alchemy SDK

• Smart Contracts: Solidity, Hardhat, OpenZeppelin (Upgradeable Proxy)

• DevOps: Vercel (frontend), Render (backend), GitHub Actions

• Other Tools: Cloudinary (image upload), Draco (3D model compression)

Project Directory Structure

/backend → Express API with auth, swap, LP, profile logic /contracts → Hardhat project with Factory, Pair, ERC20 tokens /frontend → React app with routing, wallet context, UI pages

Security & Performance

• MetaMask SDK ensures safe wallet interaction

• Upgradeable smart contracts for long-term flexibility

• Cloudinary and Draco for optimized asset loading

• User-friendly toast messages and error handling

Design Choices

• Real-time charts with auto-update on trades

• Fully responsive mobile-first UI

• On-chain social graph tied to wallets

• Unique 3D MetaCow mascot on homepage

User Validation

We shared MetaCowDEX with a few DeFi users and builders. The Copy Trade feature was highly appreciated for making learning easy. Faucet integration and the automatic MetaMask import made onboarding smooth. Reputation scores were seen as a fun and competitive incentive to stay active.

Screenshots

Team

• Dhruv Pancholi

• Suhani Sharma

Conclusion

MetaCowDEX blends trading, identity, and social connection into one DeFi platform. It’s designed to make DeFi more transparent, human, and rewarding — helping users not only trade, but also grow, learn, and build their reputation on-chain.