Cross-Chain Bridge

Interoperability

A trust-minimized cross-chain bridge enabling secure asset transfers between EVM chains using multi-signature validation, hash time-locked contracts, and relay networks.

Technology Stack

SolidityHTLCMultisigMerkle ProofsRelay Network

Key Features

EVM-to-EVM bridging
HTLC atomic swaps
Multi-sig validators
Merkle proof verification
Rate limiting
Emergency pause
Fee management
Relay incentives

Architecture

  Chain A                              Chain B
┌─────────────────┐              ┌─────────────────┐
│   Bridge Vault  │              │   Bridge Vault  │
│   ┌───────────┐ │   Relay      │ ┌───────────┐   │
│   │   Lock    │ │   Network    │ │  Mint     │   │
│   │   Assets  ├─┼──────────────┼─▶  Wrapped  │   │
│   └───────────┘ │              │ └───────────┘   │
│   ┌───────────┐ │              │ ┌───────────┐   │
│   │  Unlock   │◀┼──────────────┼─┤   Burn    │   │
│   │  Assets   │ │   Validators │ │  Wrapped  │   │
│   └───────────┘ │              │ └───────────┘   │
└─────────────────┘              └─────────────────┘

Code Sample

BridgeVault.sol

contract BridgeVault is Pausable, AccessControl {

    bytes32 public constant RELAYER_ROLE =
        keccak256("RELAYER_ROLE");

    // Lock tokens and emit event for relay pickup
    function lockTokens(
        address token,
        uint256 amount,
        uint256 destChainId,
        address recipient
    ) external whenNotPaused {
        IERC20(token).transferFrom(
            msg.sender, address(this), amount
        );
        emit TokensLocked(token, msg.sender,
            recipient, amount, destChainId);
    }
}

Project Metrics

N+1

Chain Support

HTLC

Atomic Security

< 5 min

Bridge Time

Work With Us

This project represents the kind of production-grade blockchain engineering Blocknetics delivers. Whether you need a similar solution or want to extend an existing one, our team is ready.

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