Token Bridge

The DI Network Token Bridge enables secure cross-chain asset transfers between supported blockchain networks. It uses a lock-and-mint mechanism to maintain asset integrity across chains.

Overview

The Token Bridge allows users to:

• Transfer assets between supported networks

• Maintain 1:1 asset backing across chains

• Access unified liquidity pools

• Execute cross-chain arbitrage

Architecture

Lock-and-Mint Model

1. Lock: Original tokens locked on source chain

2. Verify: Cross-chain message validation

3. Mint: Equivalent tokens minted on destination chain

4. Burn-and-Unlock: Reverse process for withdrawals

Bridge Components

• Vault Contracts: Secure token custody on each chain

• Bridge Relayers: Cross-chain message transmission

• Validation Network: Multi-signature verification

• Fee Collection: Automated fee distribution

Supported Assets

Native Tokens

• DI Token (primary governance token)

• DUSD (algorithmic stablecoin)

• Wrapped native tokens (WETH, WMATIC, etc.)

Bridged Assets

• Major cryptocurrencies (BTC, ETH, USDC, USDT)

• DeFi tokens (UNI, AAVE, COMP)

• Synthetic assets (sBTC, sETH, sGOLD)

Security Model

Multi-Layer Validation

• Cryptographic proof verification

• Multi-signature validator network

• Time-delayed withdrawals for large amounts

• Emergency pause mechanisms

Risk Management

• Per-asset transfer limits

• Daily volume caps

• Anomaly detection systems

• Insurance fund coverage

Bridge Process

Deposit Flow

// Initiate bridge transfer
await bridge.deposit({
  token: 'DI',
  amount: '1000',
  fromChain: 'ethereum',
  toChain: 'polygon',
  recipient: userAddress
})

Withdrawal Flow

// Withdraw back to origin chain
await bridge.withdraw({
  token: 'DI',
  amount: '500',
  fromChain: 'polygon',
  toChain: 'ethereum',
  recipient: userAddress
})

Performance Metrics

Speed

• Standard transfers: 5-15 minutes

• Fast transfers: 1-3 minutes (higher fees)

• Emergency mode: 24-hour delay

Capacity

• Daily volume limit: $10M per asset

• Single transaction limit: $1M

• Total bridge capacity: $100M

Integration

SDK Usage

import { DIBridge } from '@di-network/sdk'

const bridge = new DIBridge({
  network: 'mainnet',
  provider: web3Provider
})

// Check bridge status
const status = await bridge.getStatus('DI', 'ethereum', 'polygon')

Smart Contract Integration

Contracts can integrate bridge functionality through the IBridge interface for automated cross-chain operations.