DarkEigen Hook 🌊⚡

UHI6 Hookathon Submission

DarkEigenHook is a sophisticated Uniswap V4 hook contract that extends the base BaseHook from V4 periphery, integrating EigenLayer's Actively Validated Services (AVS) for staking and slashing, while adding privacy-focused order execution (to mitigate MEV attacks) and simplified cross-chain swap functionality. It's designed for DeFi applications emphasizing security, decentralization, and interoperability, with built-in protections like reentrancy guards and commit-reveal schemes.

Video Demo

https://www.veed.io/view/38934740-e4da-4e9a-a978-030b03f87541?source=editor&panel=share

Features

🔐 Privacy & MEV Protection

• Commit-Reveal Scheme: Two-phase order execution to prevent frontrunning
• Time-delayed Execution: Minimum block delay to protect against MEV attacks
• Order Hash Privacy: Orders are committed with hashes before revealing details

⚡ EigenLayer AVS Integration

• Validator Registration: Stake-based validator system
• Slashing Mechanism: Penalize malicious or poorly performing validators
• Decentralized Validation: Multiple validators secure cross-chain operations

🌐 Cross-Chain Capabilities

• Cross-Chain Swap Initiation: Lock tokens on source chain
• Proof-Based Completion: Cryptographic proofs for cross-chain verification
• Multi-Chain Support: Designed for Ethereum, Polygon, Arbitrum, Optimism

🦄 Uniswap v4 Hook Integration

• Pool Initialization Control: Enable/disable pools for DarkEigen
• Pre-Swap Validation: MEV protection and security checks
• Post-Swap Processing: Logging and validation

Architecture

┌─────────────────┐    ┌──────────────────┐    ┌─────────────────┐
│   EigenLayer    │    │  Uniswap v4      │    │  Cross-Chain    │
│   Validators    │◄──►│  Pool Manager    │◄──►│  Bridge         │
└─────────────────┘    └──────────────────┘    └─────────────────┘
         ▲                        ▲                        ▲
         │                        │                        │
         ▼                        ▼                        ▼
┌─────────────────────────────────────────────────────────────────┐
│                    DarkEigen Hook                              │
│  ┌─────────────┐  ┌─────────────┐  ┌─────────────────────────┐ │
│  │   Privacy   │  │    MEV      │  │    Cross-Chain          │ │
│  │ Protection  │  │ Protection  │  │    Operations           │ │
│  └─────────────┘  └─────────────┘  └─────────────────────────┘ │
└─────────────────────────────────────────────────────────────────┘

Quick Start

Prerequisites

1. Install Foundry

curl -L https://foundry.paradigm.xyz | bash
foundryup

2. Install Dependencies

forge install foundry-rs/forge-std
forge install Uniswap/v4-core
forge install Uniswap/v4-periphery
forge install OpenZeppelin/openzeppelin-contracts
forge install Layr-Labs/eigenlayer-contracts

Setup Environment

1. Create .env file

# Private keys (DO NOT COMMIT)
PRIVATE_KEY=your_private_key_here

# RPC URLs
MAINNET_RPC_URL=https://eth-mainnet.g.alchemy.com/v2/your-key
SEPOLIA_RPC_URL=https://eth-sepolia.g.alchemy.com/v2/your-key
POLYGON_RPC_URL=https://polygon-mainnet.g.alchemy.com/v2/your-key

# API Keys for verification
ETHERSCAN_API_KEY=your_etherscan_api_key
POLYGONSCAN_API_KEY=your_polygonscan_api_key

2. Load environment

source .env

Build & Test

# Build the project
forge build

# Run tests
forge test

# Run tests with gas reporting
forge test --gas-report

# Run specific test
forge test --match-test testCommitRevealOrder -vvv

# Coverage report
forge coverage

Deployment

Local Development

# Start local node
anvil

# Deploy to local network
forge script script/DeployDarkEigen.s.sol --rpc-url http://localhost:8545 --broadcast

Testnet Deployment (Sepolia)

forge script script/DeployDarkEigen.s.sol --rpc-url $SEPOLIA_RPC_URL --broadcast --verify

Mainnet Deployment

forge script script/DeployDarkEigen.s.sol --rpc-url $MAINNET_RPC_URL --broadcast --verify

Usage Examples

1. Register as Validator

// Register with 10 ETH stake
uint256 stake = 10 ether;
darkEigenHook.registerValidator{value: stake}(stake);

2. Execute Private Order

// Step 1: Commit order hash
bytes32 orderHash = keccak256(abi.encodePacked(
    trader, amount, minAmountOut, deadline, nonce
));
darkEigenHook.commitOrder(orderHash);

// Step 2: Wait for MEV protection delay
// (minimum 2 blocks)

// Step 3: Reveal and execute
darkEigenHook.revealAndExecuteOrder(
    orderHash,
    amount,
    minAmountOut,
    deadline,
    nonce,
    poolKey,
    swapParams
);

3. Cross-Chain Swap

// Initiate cross-chain swap
bytes32 swapHash = darkEigenHook.initiateCrossChainSwap(
    137, // Polygon chain ID
    sourceToken,
    targetToken,
    amount,
    recipient,
    proofHash
);

// Complete on target chain (with proof)
darkEigenHook.completeCrossChainSwap(swapHash, proof);

Security Considerations

MEV Protection

• Time Delays: Minimum 2-block delay between commit and execution
• Hash Commitments: Order details hidden until execution
• Validator Consensus: Multiple validators must agree on cross-chain operations

Validator Security

• Stake Requirements: Minimum stake required for validator registration
• Slashing Conditions: Validators can be slashed for malicious behavior
• Reputation System: Track validator performance and reliability

Cross-Chain Security

• Proof Verification: Cryptographic proofs required for cross-chain completion
• Time Locks: Delays built into cross-chain operations
• Multi-Sig Requirements: Critical operations require multiple signatures

Gas Optimization

The hook is optimized for gas efficiency:

• Packed Structs: Efficient storage layout
• Minimal External Calls: Reduced gas costs
• Batch Operations: Multiple operations in single transaction
• State Pruning: Remove outdated data to free storage

Testing

Unit Tests

forge test --match-contract DarkEigenHookTest

Integration Tests

forge test --match-test testCrossChain

Fuzz Tests

forge test --match-test testFuzz

Monitoring & Analytics

Events to Monitor

• OrderCommitted: Track order commitments
• OrderExecuted: Monitor successful executions
• ValidatorSlashed: Watch for validator penalties
• CrossChainSwapInitiated: Track cross-chain activity

Metrics

• Order execution success rate
• Average MEV protection delay
• Validator uptime and performance
• Cross-chain completion times

Roadmap

Phase 1: Core Infrastructure ✅

• Basic hook implementation
• MEV protection mechanisms
• Validator system

Phase 2: Enhanced Privacy 🔄

• Zero-knowledge proof integration
• Advanced privacy features
• Stealth address support

Phase 3: Multi-Chain Expansion 🔄

• Additional chain integrations
• Cross-chain liquidity pools
• Unified cross-chain interface

Phase 4: Advanced Features 📋

• Flash loan integration
• Automated MEV redistribution
• DAO governance system

Contributing

1. Fork the repository
2. Create a feature branch: git checkout -b feature-name
3. Commit changes: git commit -am 'Add feature'
4. Push to branch: git push origin feature-name
5. Submit a Pull Request

Security Audits

Before mainnet deployment:

• Internal security review
• External audit (TBD)
• Bug bounty program
• Testnet deployment and monitoring

License

MIT License - see LICENSE file for details

Support

• GitHub Issues: Report bugs and feature requests
• Documentation: [Coming Soon]
• Discord: [Community Link TBD]

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