OPNSwap
A simple AMM DEX on OPN Chain supporting token swaps and liquidity provision
by fazlan22110 · submitted May 31, 2026
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Description
01/03
What the builder said.
Written by the team, rendered as the markdown they typed in the submission wizard.
OPNSwap is a decentralized AMM (Automated Market Maker) exchange built natively on OPN Chain. It allows users to swap between USDO and OPNB tokens trustlessly with a 0.3% fee, add liquidity to earn LP tokens, and remove liquidity anytime. The protocol uses the constant product formula (x * y = k) — the same battle-tested mechanism used by Uniswap V2. All swaps include slippage protection to protect users from price impact. Built with:
Solidity smart contracts (ERC20, ReentrancyGuard) Pure HTML/JS frontend — no frameworks needed Fully deployed and live on OPN Testnet
This project demonstrates that OPN Chain is fully EVM-compatible and capable of running production-grade DeFi protocols. Future plans include multi-token support, farming rewards, and a price chart dashboard.
Roadmap
02/03
What ships next.
The builder's own next-quarter plan. Use it to gauge follow-through and ambition.
Phase 1 — Testnet Launch (Current)
✅ Deploy AMM smart contracts on OPN Testnet ✅ Token swap functionality (USDO ↔ OPNB) ✅ Add and remove liquidity ✅ LP token distribution ✅ Frontend interface live
Phase 2 — Protocol Expansion (1-2 Months)
Add support for multiple token pairs Integrate OPN native token as base pair Add price impact warnings Improve UI/UX with live price charts Add transaction history for users
Phase 3 — Incentives & Growth (2-4 Months)
Launch liquidity mining rewards Add yield farming for LP holders Referral program for new users Mobile-friendly interface Security audit of smart contracts
Phase 4 — Mainnet Launch (4-6 Months)
Deploy on OPN Chain Mainnet Launch governance token Community voting on new token pairs Partner with other OPN Chain projects Cross-chain bridge integration
On-chain proof
03/03
3 contracts on OPN Chain.
The chain itself confirmed every deployment is valid, signed by the builder's wallet, and inside the season's window.