ExchangeX OTC – P2P & OTC Crypto Exchange Platform Development
Comfygen partnered with a fintech startup to build ExchangeX OTC, a hybrid crypto exchange platform supporting P2P and Over-the-Counter (OTC) trading functionalities. The goal was to create a decentralized yet secure environment where users can trade directly, bypassing traditional intermediaries. This custom-built platform empowers users with privacy, transparency, and control over crypto transactions, with fiat payment integrations across regions like the UAE, India, and Nigeria.

Challenges
- Escrow System Complexity: Creating a smart contract-based escrow that automatically releases funds on successful transactions.
- KYC for P2P: Building a compliance layer without compromising decentralization.
- Cross-Border Payment Integration: Supporting multiple fiat channels (bank, UPI, PayPal) in different countries.
- Fraud Protection: Implementing a reputation system and dispute management for buyer-seller safety.
- Mobile UX Optimization: Delivering a seamless user experience across devices with responsive components.


Solution
- Deployed a decentralized P2P trading engine integrated with multi-wallet support.
- Implemented smart contract-based escrow release triggered by mutual agreement or automated timeout.
- Integrated KYC with third-party providers like Jumio for global verification.
- Developed an in-app chat and dispute resolution system between buyers and sellers.
- Enabled regional fiat on-ramps and auto-matching algorithms for user convenience.
Features
- Smart Contract Escrow Protection
- Reputation & Rating System for Traders
- Multi-Fiat Support (INR, AED, NGN, USD)
- Instant Trade Matching Algorithm
- AI-Powered Fraud Detection & Risk Flags
- Built-in Messaging & Dispute Resolution
- Crypto Wallet Integration (MetaMask, Trust Wallet)
- Admin Panel with Trade Monitoring
- P2P Trading Analytics Dashboard


Business Benefits
- Expanded into 7+ countries within 2 quarters.
- Reduced fraud complaints by 80% with AI monitoring.
- Achieved 100% increase in user engagement due to mobile-first UX design.
- Enabled secure fiat-crypto trading without intermediaries.
- Facilitated over 250K+ verified KYC user onboardings.
Tech Stack
- Backend: Express.js, PostgreSQL
- Frontend: Vue.js, Tailwind CSS
- Smart Contracts: Solidity, Polygon
- Mobile: React Native
- Fiat Integration: Razorpay, Stripe, Flutterwave
- Security: SSL Encryption, IP Whitelisting
