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Season 1 · DeFi & Open Finance

IOD DEX

A full DeFi suite on OPN Chain — swap, staking, farming, lending, airdrop and referral, powered by the IOD token.

Stage 1, ReviewDeFi & Open Finance

by dinhvinhbac · submitted Jun 4, 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.

What we built

IOD DEX is a complete DeFi suite on OPN Chain, built around the native IOD token (IOPn + DEX). It bundles six core money-market and trading primitives into one simple app:

  • Swap — constant-product AMM (Uniswap V2 style), 0.30% fee
  • Liquidity — add/remove liquidity, earn trading fees, create new pools
  • Staking — stake IOD, earn IOD rewards continuously
  • Farming — multi-pool MasterChef, stake LP tokens for IOD yield
  • Lending/Borrowing — supply USDT to earn, borrow against IOD collateral, with health factor + liquidation
  • Airdrop & Referral — Merkle airdrop plus on-chain referral commissions paid in IOD

Why

OPN Chain needs core financial infrastructure that other builders and users can rely on. Instead of a single demo feature, we shipped the full stack a real DeFi ecosystem needs — trading, liquidity, yield, and credit — so the chain has working primitives from day one. Everything is live, tested, and verified on testnet, not a mockup.

How it works

  • 10 Solidity contracts (OpenZeppelin patterns: SafeERC20, ReentrancyGuard, capped minting)
  • Reward emitters (Staking, MasterChef) are authorized IOD minters, capped by MAX_SUPPLY
  • Referral commissions accrue on every swap/harvest and are paid as freshly minted IOD — never reducing users' own rewards
  • Lending uses an over-collateralized model with a configurable price oracle and liquidation bonus
  • React + ethers v6 frontend; one-click faucet to try every feature

Proof it works

  • All contracts deployed and verified on the OPN testnet explorer
  • Full end-to-end run on live testnet: 21/21 feature steps passing (faucet, swap, liquidity, staking, farming, lending, airdrop, referral)
  • 8/8 unit tests passing, including LTV enforcement
  • Open source: github.com/anlop111/IOD-Dex-opn-chain

Roadmap

02/03

What ships next.

The builder's own next-quarter plan. Use it to gauge follow-through and ambition.

Q2 2026 — Now (live on testnet)

  • 10 contracts deployed & verified on OPN testnet; 21/21 end-to-end feature steps passing
  • Swap, liquidity, staking, farming, lending, airdrop and referral all working
  • Finalize IOD tokenomics: supply cap, emission schedule, fee-sharing, treasury allocation

Q3 2026 — Hardening & TGE

  • Replace the manual lending price with a real on-chain oracle (AMM TWAP + fallback feed)
  • Third-party security review of core contracts (AMM, lending, reward minting)
  • TGE (Token Generation Event): public IOD launch with initial liquidity and airdrop to early testnet users
  • DEX listing: open the IOD/USDT and IOD/OPN pairs on our own AMM as the primary on-chain market

Q4 2026 — Mainnet & growth

  • Mainnet launch on OPN Chain with audited contracts
  • Liquidity incentive program to bootstrap depth on key pairs
  • External DEX listings: list IOD on leading multi-chain DEX aggregators and partner DEXs for wider reach
  • Analytics dashboard: TVL, volume, APR and utilization in real time

Q1 2027 — CEX & ecosystem

  • CEX listings: pursue tier-2 centralized exchange listings first, then tier-1, with market-making support
  • Open SDK/API so other OPN builders can integrate swap & lending as primitives
  • Governance: IOD-weighted voting on emissions, listings, and risk parameters
  • Onboard ecosystem partners and institutional liquidity (with IOPn GTM support)

Beyond

  • Cross-chain via IBC once available on OPN Chain
  • More markets: additional collateral assets and isolated lending pools
  • Mobile-first experience

On-chain proof

03/03

10 contracts on OPN Chain.

The chain itself confirmed every deployment is valid, signed by the builder's wallet, and inside the season's window.

  • 01IODTokenPrimary

    0x68C1FB89B52BbC0b26eeE0a3e7c45eFC5316C8a7

    tx 0x87cd0b7d77073f1fb2b4d2ca351806bede9a752f78eaf905f1e897f070e03e5d

    deployed Jun 4, 2026 · block 17907905

  • 02IODFactory

    0xB431408FB4A301dd881A18227956dF581b75EE9f

    tx 0xc1241188bfb7e150af7c1c55fb8b878c09d8d04045f06b1d4e218d719ab583a2

    deployed Jun 4, 2026 · block 17907925

  • 03IODRouter

    0x866ab40271806d6Fe883a5EBD33ED91981fb6216

    tx 0x2c85e4ffcd9c90ca17688f1d3ad827dedbb9cc4df4f2fca4083634d37ddf2637

    deployed Jun 4, 2026 · block 17907930

  • 04MasterChef

    0xB3eee3E50B8479CE109495141f8E14Ca0bE067b2

    tx 0x9424b26b918c1f5d9c227e89b3ae14d99078940c4a45c25f00c0e9e82b2e0760

    deployed Jun 4, 2026 · block 17907958

  • 05StakingPool

    0x1637a4bB500a5F4F86885eff820F75EeC059dD9D

    tx 0xf7972a9a9cc1cd80defd922c243dc762467e07791406a86fdc3c5953eacc06dd

    deployed Jun 4, 2026 · block 17907939

  • 06LendingPool

    0x3b8b118D60f0d18D08088199b2cE3Ec1aAaA0927

    tx 0x2d0e0d5f6b61350f6ae68c114465fc1f325f716b3ac64f7b79a5ddacbc10e75d

    deployed Jun 4, 2026 · block 17910030

  • 07MerkleAirdrop

    0x13aa6B4254380E3c3B726B86e01E5635e5C78664

    tx 0x71b6b93036f6e75f56df91bac972fdb47f8f120c141741ab7481bf35876b3ffc

    deployed Jun 4, 2026 · block 17907981

  • 08ReferralRegistry

    0xCB650015Fb63AAFe380cFA13E7B324d6Fe852881

    tx 0xd1f6cca07dd868de606aa077c2a3e9c3f78830585dc3447c468b24b38727a388

    deployed Jun 4, 2026 · block 17907916

  • 09MockERC20

    0x514D4eC4fe0316Eb81e03fCf41F1E192Db076906

    tx 0x408194e4abab1a674accf44cbde035a81fff946c3cd4401d4bd849cd36ffb952

    deployed Jun 4, 2026 · block 17907908

  • 10MockERC20

    0x15D395d92977347AC65c54FE1259571c09777F73

    tx 0x231a46d868f296af338123fe6c764ff09a8bb7a3d9272136979964374569131e

    deployed Jun 4, 2026 · block 17907911