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Season 1 · DeFi & Open Finance

OPE DEX

A cute meme DEX on OPN Chain — swap, pool, presale, launchpad, stake & airdrop.

Stage 1, ReviewDeFi & Open Finance

by anlee1289 · submitted Jun 14, 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

OPE DEX is a full-stack DeFi suite on OPN Chain (testnet, chainId 984). It bundles six permissionless primitives behind one frontend:

  • DEX — a Uniswap V2 fork (Factory, Pair, Router, WOPN) for swapping OPN ↔ OPEPE and providing liquidity.
  • Staking — stake OPEPE, earn OPEPE rewards on a Synthetix-style roling reward schedule.
  • Presale — contribute OPN, claim tokens on success or refund if the soft cap isn't met.
  • Launchpad — anyone can deploy and fund their own presale in one transaction.
  • Merkle Airdrop — gas-efficient claims verified against an on-chain Merkle root.
  • MemeToken — the $OPEPE ERC-20 at the center of it all.

Why

Meme tokens drive real on-chain activity, but the tooling is scattered across many dApps. We wanted to show that a single chain can host the entire lifecycle — launch, trade, pool, stake, reward — with no intermediary, all open-source and verifiable. The chain itself is the financial backend.

How it works

  • 9 Solidity contracts deployed and source-verified on the OPN testnet explorer.
  • Smart contracts in Solidity 0.8.x, built and tested with Hardhat (full test suite + an on-chain smoke test covering 13/13 features end-to-end with a live wallet).
  • Frontend in Next.js + wagmi + RainbowKit, deployed on Vercel.
  • Everything is permissionless and on-chain: no backend server holds funds or state.

Try it

Add the network to MetaMask, then connect:

Network:  OPN Testnet
chainId:  984
Actions:  swap OPN/OPEPE, add liquidity, stake, join a presale, claim airdrop

Repo and all verified contract addresses are linked in the submission.

Roadmap

02/03

What ships next.

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

Q3 2026 · Now

  • Full suite live and source-verified on OPN testnet: DEX, staking, presale, launchpad, Merkle airdrop
  • On-chain smoke test passing 13/13 features end-to-end with a live wallet
  • Frontend deployed on Vercel with wagmi + RainbowKit

Q4 2026 · TGE + listings

  • Third-party security review of the core contracts
  • $OPEPE Token Generation Event (TGE) with public presale via the launchpad
  • List OPEPE on the native OPE DEX and seed dep OPN/OPE liquidity
  • First centralized exchange (CEX) listings before end of Q4

Q1 2027 · Grow liquidity

  • List OPEPE on major external DEXs (Uniswap, PancakeSwap-class venues)
  • Liquidity mining program to bootstrap pools
  • Price chart and pool analytics in the swap UI
  • LP staking: stake OPN/OPEPE LP tokens for rewards, not just single-asset

Q2 2027 · Governance

  • Launch governance: OPEPE holders vote on fees and reward schedules
  • Public subgraph / indexer for pools, trades, and stakes
  • Market-maker partnerships to support order-book liquidity

Q3 2027 · CEX scale

  • Tier-1 CEX listing
  • Launchpad templates so creators spin up a presale in one click

Q4 2027 · Scale

  • Cross-chain bridge for OPEPE to widen liquidity across networks
  • Mobile-first PWA covering the entire suite

On-chain proof

03/03

8 contracts on OPN Chain.

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

  • 01PresalePrimary

    0xDD362f9d0A02C48ff2DC9Eee00d83ac0FCd51e25

    tx 0x328ab48900732231fc7c16e7deb1c2516f8023e8319afd689dd753c4809f10a4

    deployed Jun 14, 2026 · block 18541651

  • 02MerkleAirdrop

    0xdA48B038459308A4FA2E2C21e15Ab9204629c09a

    tx 0xcee2cb26c297a084d4770df3c522bda9eb2d4866a0049179c3a037472ece5e4c

    deployed Jun 14, 2026 · block 18539056

  • 03StakingRewards

    0x27Fe6Cc7E887E70655B96d23Fc2cd29283238D94

    tx 0xad37575b8a06526af7fec31330dff036ecace84355b3bcbda5ec5392511755cc

    deployed Jun 14, 2026 · block 18539052

  • 04Launchpad

    0x97fcCf7635038b6af8f51741278BAEc1aE2673C9

    tx 0xf300b7e762669d48a82912f7f3d593d4e9a44a5a783e9eda23fee85b4f6cf7b9

    deployed Jun 14, 2026 · block 18539048

  • 05DexRouter

    0x0Be716BEB23154b52d00F52d7D95a099e0FED151

    tx 0x52bf8052eb5ca84a50ed83ea14d0e1a578a0e3f5df1404f9dfd62635698dc60a

    deployed Jun 14, 2026 · block 18539044

  • 06DexFactory

    0xD0cf4cda1a2b8956BDF54ebAa2804d399094278f

    tx 0x598ea639e1ac558b3abf6cd0fd628db38f23200057283ab5c9ef76400fd38eb1

    deployed Jun 14, 2026 · block 18539039

  • 07WOPN

    0x979AB6D65199F10C30C1909007Fc012791A39A63

    tx 0x655006c7282fa51269e8c50b820c17cc5dbcaa235afbcc01676771b7042caed9

    deployed Jun 14, 2026 · block 18539031

  • 08MemeToken

    0x7dA69148f610c362b2C21764b82a1d5c2566A8ef

    tx 0x941830cb95deba95afc7302e6c07d3ecc97e0e09e7e781ee060eb50d86d2fc10

    deployed Jun 14, 2026 · block 18539005