ZKperps

zkperps is a privacy-preserving perpetual futures trading system built on Uniswap V4 hooks, designed to eliminate front-running, sandwich attacks, and MEV extraction in on-chain perps.

Core Innovation Traditional on-chain perpetuals expose individual trade intents (size, direction, leverage) in the public mempool or calldata, allowing MEV bots to front-run large positions, snipe liquidations, or sandwich trades — resulting in significant slippage, lost profits, and leaked strategies for users and autonomous agents.

zkperps fixes this with a commit-reveal + ZK-verified batch execution model:

• Users (via a Next.js frontend) submit commitments (only hashes of their perp intents: e.g., open ETH/USD long 0.1 ETH at 10x leverage with specific margin).

• Circom circuits generate Groth16 ZK proofs to verify commitment validity (sufficient collateral, valid parameters, no double-spend) without revealing details — proofs are checked on-chain.

• A coordinator collects commitments, triggers reveals (in separate txs), and executes the batch: only the aggregate net delta (e.g., net +0.45 ETH long exposure across all participants) interacts with the Uniswap V4 AMM pool via the custom PrivBatchHook.

• Individual positions are privately managed and updated in the PerpPositionManager contract — no single trade's size or direction is ever visible publicly.

• Funding rates, margin calculations, liquidations, and mark prices are handled on-chain with an oracle adapter.

Tech Stack & Deployment

• Frontend: Next.js + React Query + Privy (email login + embedded wallets) + Chart.js + CoinGecko for live ETH/USD pricing.

• Backend: Express API for intent coordination, server-side signing, positions/collateral queries (minimizing user signatures).

• Contracts (deployed on Base Sepolia):

  • PrivBatchHook: 0xe3ea87fb759c3206a9595048732eb6a6000700c4

  • PerpPositionManager: 0xf3c9cdbaf6dc303fe302fbf81465de0a057ccf5e

  • Mock USDC: 0x3cbe896e5e4093d6bf8dc0dc7a44c50552c0651e

  • Mock USDT: 0x3c604069c87256bbab9cc3ff678410275b156755

  • Market ID: 0x0000000000000000000000000000000000000001

• ZK: Circom circuits + Groth16 proofs for commitment integrity.

Why It Matters This delivers true MEV resistance for perpetuals without requiring a custom L1 or off-chain order book — preserving full Ethereum/L2 composability while protecting traders from classic DeFi attacks. It enables fairer execution for retail users and profitable, stealthy operation for autonomous trading agents in a world where privacy is becoming essential.

Built during the hackathon using Uniswap V4's extensible hooks, zkperps pushes the boundaries of private DeFi execution and demonstrates how hooks can power sophisticated derivatives primitives securely and privately.

zkperps: Making on-chain perpetual futures private, protected, and production-ready.