# Blockchain Infrastructure (chains, stablecoins used)

Ramply's blockchain infrastructure is built on a multi-chain architecture that supports 30+ blockchain networks, ensuring optimal performance, security, and cost-effectiveness for cross-border payments.

## Supported Blockchain Networks

### Layer 1 Blockchains

* **Ethereum**: Primary network for USDC and major DeFi integrations
* **Polygon**: Low-cost transactions for high-frequency transfers
* **BSC (Binance Smart Chain)**: Fast and affordable transactions
* **Avalanche**: High throughput and low latency
* **Solana**: Ultra-fast transaction processing
* **Arbitrum**: Layer 2 scaling for Ethereum
* **Optimism**: Optimistic rollup for Ethereum scaling

### Layer 2 Solutions

* **Polygon PoS**: Ethereum-compatible sidechain
* **Arbitrum One**: Optimistic rollup with full EVM compatibility
* **Optimism**: Layer 2 scaling solution
* **Base**: Coinbase's Layer 2 network

### Alternative Networks

* **Tron**: High-speed transactions with low fees
* **Fantom**: Fast finality and low costs
* **Harmony**: Sharded blockchain for scalability
* **Cronos**: Crypto.com's EVM-compatible chain

## Stablecoin Strategy

### Primary Stablecoins

* **USDC (USD Coin)**: Circle's regulated stablecoin
  * Deployed on Ethereum, Polygon, Avalanche, Arbitrum, Optimism
  * Fully backed by US dollars and cash equivalents
  * Regulated and audited by top-tier accounting firms
  * Primary choice for institutional and retail users
* **USDT (Tether)**: Most liquid stablecoin
  * Available on multiple chains for maximum liquidity
  * High trading volume and market acceptance
  * Used for arbitrage and liquidity provision

### Regional Stablecoins

* **EURC**: Euro-pegged stablecoin for European users
* **USDC on Polygon**: Low-cost alternative for smaller transfers
* **USDC on Avalanche**: Fast settlement for time-sensitive transfers

## Circle Integration

### Non-Custodial Wallet Infrastructure

* **Circle API Integration**: Direct integration with Circle's infrastructure
* **USDC Minting/Burning**: Programmatic stablecoin management
* **Compliance Integration**: Built-in KYC/AML compliance
* **Regulatory Compliance**: Circle's regulatory framework ensures compliance

### Key Benefits

* **Regulatory Clarity**: Circle's regulatory compliance reduces legal risks
* **Institutional Grade**: Enterprise-level security and reliability
* **Liquidity Access**: Deep liquidity pools for large transactions
* **Audit Trail**: Complete transaction history and compliance reporting

## Multi-Chain Architecture

### Chain Selection Algorithm

* **Cost Optimization**: Automatically selects the most cost-effective chain
* **Speed Requirements**: Prioritizes faster chains for urgent transfers
* **Liquidity Availability**: Ensures sufficient liquidity on selected chains
* **Network Congestion**: Avoids congested networks for better performance

### Cross-Chain Bridge Integration

* **Wormhole**: Secure cross-chain message passing
* **LayerZero**: Omnichain interoperability protocol
* **Chainlink CCIP**: Cross-chain interoperability protocol
* **Custom Bridges**: Proprietary bridges for specific use cases

## Security Measures

### Smart Contract Security

* **Multi-signature Wallets**: Enhanced security for large transactions
* **Time-locked Contracts**: Additional security for critical operations
* **Upgradeable Contracts**: Ability to fix bugs and add features
* **Audit Trail**: Complete on-chain transaction history

### Key Management

* **Hardware Security Modules (HSM)**: Secure key storage
* **Multi-party Computation**: Distributed key generation
* **Cold Storage**: Offline storage for maximum security
* **Key Rotation**: Regular key rotation for enhanced security

## Performance Optimization

### Transaction Batching

* **Batch Processing**: Multiple transactions in single batch
* **Gas Optimization**: Minimize gas costs through efficient batching
* **Priority Queuing**: High-priority transactions processed first
* **Dynamic Gas Pricing**: Real-time gas price optimization

### Network Monitoring

* **Real-time Monitoring**: Continuous network health monitoring
* **Congestion Detection**: Automatic detection of network congestion
* **Failover Mechanisms**: Automatic switching to alternative networks
* **Performance Metrics**: Detailed performance analytics and reporting


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