Equalis
Fair, MEV-resistant trading through uniform-price batch auctions on OPN Chain.
by levii3424 · submitted Jul 19, 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
Equalis is a uniform-price batch auction DEX built on OPN Chain. It groups limit orders into five-minute batches and settles all matched traders at one clearing price.
Unlike traditional execution, users do not gain an advantage by placing a transaction milliseconds earlier. Orders compete by price rather than transaction position, reducing front-running and priority-based value extraction.
How it works
- Users connect their wallet and submit Buy or Sell limit orders.
- Tokens are securely escrowed in the smart contract.
- After the batch closes, a solver proposes balanced fills and a clearing price.
- The contract verifies price limits, fill amounts, and matching balances.
- Users claim purchased assets, proceeds, unfilled funds, and price improvements.
- If settlement is delayed, users can refund their order after a safety grace period.
Key features
- Uniform clearing price for every matched trader
- Limit-price protection
- Partial fills with automatic surplus returns
- Emergency refunds for unsettled batches
- Double-claim and double-refund protection
- Reentrancy-protected token transfers
- On-chain order history
- Verified contracts on OPN Testnet
- Responsive web application
Equalis is suitable for token launches, treasury swaps, stablecoin liquidity, periodic auctions, and other markets where fair execution matters more than transaction priority.
The current testnet version uses an operator solver, while the next stage is a permissionless solver network in which multiple participants can compete to submit valid settlements.
Live demo: https://equalis-opn.vercel.app
Source: https://github.com/HYYYA222/equalis-opn
Roadmap
02/03
What ships next.
The builder's own next-quarter plan. Use it to gauge follow-through and ambition.
Q3 2026 - Testnet validation
- Complete public testing of Equalis V2 on OPN Testnet.
- Test order placement, settlement, partial fills, claims, and refunds.
- Improve wallet errors, transaction notifications, order history, and mobile UX.
- Publish technical documentation for users and developers.
- Add monitoring for batch volume, settlement time, and failed transactions.
- Target 500 testnet orders and 100 active wallets.
Q4 2026 - Security and open solvers
- Complete an independent smart-contract audit.
- Launch a public bug bounty programme.
- Release an open-source solver SDK.
- Allow multiple solvers to calculate and submit batch settlements.
- Add solver performance tracking and fallback settlement.
- Integrate with OPN wallets, token projects, and liquidity providers.
- Target three independent solvers and 99% settlement availability.
Q1 2027 - Mainnet beta
- Deploy audited contracts to OPN Chain mainnet.
- Launch selected trading pairs with conservative limits.
- Add protocol fees and transparent treasury accounting.
- Release analytics for volume, clearing prices, price improvement, and MEV savings.
- Provide APIs for wallets, aggregators, and market makers.
- Target five active markets, 1,000 traders, and $1M settled volume.
Q2-Q3 2027 - Expansion
- Add scheduled and recurring batch orders.
- Support token launches, treasury swaps, stablecoin markets, and OTC auctions.
- Explore commit-reveal orders to reduce information leakage.
- Introduce sustainable liquidity incentives.
- Expand integrations across the OPN ecosystem.
Long-term vision
Equalis will become open batch-auction infrastructure for OPN Chain. Projects will be able to create markets, integrate order flow, and operate solvers under transparent on-chain rules.
The protocol will remain focused on fair execution, verifiable settlement, reliable liquidity, reduced MEV, and safe recovery of user funds.
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.