Hemswap Cross-Chain Bridge

Overview

A secure, efficient cross-chain token bridge built on Across Protocol's infrastructure, enabling seamless asset transfers across multiple blockchain networks.

Key Features

• 🌉 Multi-Chain Token Transfers
• 🔒 Advanced Security Mechanisms
• 📊 Comprehensive Transfer Tracking
• 💸 Dynamic Fee Calculation

Architecture Components

Core Infrastructure

• Across Protocol Integration
  • Leverages Across Protocol's V3 Core Router
  • Seamless cross-chain transfer execution
  • Automatic liquidity management

Transfer Mechanism

• Unique transfer ID generation
• Detailed transfer metadata tracking
• Cross-chain transfer execution with status tracking

Transfer Tracking

Transfer statuses:

• INITIATED: Transfer started
• COMPLETED: Transfer successful
• FAILED: Transfer unsuccessful

Key Methods

• getUserTransfers(): Retrieve user's recent transfers
• getTransferDetails(): Get specific transfer details
• getTotalTransfers(): Get total number of bridge transfers

Security Features

• SafeERC20 token handling
• ReentrancyGuard protection
• Ownership-based access control
• Comprehensive input validation

Fee Management

• Dynamic fee calculation via Across Protocol Core Router
• Estimated fee calculation through getEstimatedBridgeFee()

Deployment Requirements

• Solidity 0.8.19
• OpenZeppelin Contracts
• Across Protocol Interfaces

Required Environment Variables

• PRIVATE_KEY: Deployment wallet private key
• ACROSS_CORE_ROUTER: Across Protocol Core Router address
• ACROSS_SPOKE_POOL: Spoke Pool contract address

Deployment

npx hardhat deploy --network [target_network]

Testing

npx hardhat test

Supported Networks

• Ethereum Mainnet
• Arbitrum
• Optimism

Disclaimer

Experimental implementation. Use at your own risk.

License

MIT License

Author

Mujeeb Sulayman