Supported Chains and Currencies

Overview

Request Network supports payments across 10 EVM-compatible blockchain networks with 553+ currencies including major cryptocurrencies, stablecoins, and fiat currencies. This comprehensive coverage ensures global accessibility and flexibility for all payment scenarios.

Supported Blockchain Networks

Ethereum

Mainnet & Sepolia TestnetNative Token: ETH Popular Tokens: USDC, USDT, DAI, LINK, UNI Network ID: 1 (mainnet), 11155111 (sepolia)Best For: High-value transactions, DeFi integration

Polygon

Mainnet & Mumbai TestnetNative Token: MATIC Popular Tokens: USDC, USDT, DAI, WETH Network ID: 137 (mainnet), 80001 (mumbai)Best For: Low-cost transactions, high throughput

Arbitrum

One & Sepolia TestnetNative Token: ETH Popular Tokens: USDC, USDT, ARB, GMX Network ID: 42161 (one), 421614 (sepolia)Best For: Lower fees with Ethereum security

Optimism

Mainnet & Sepolia TestnetNative Token: ETH Popular Tokens: USDC, USDT, OP, SNX Network ID: 10 (mainnet), 11155420 (sepolia)Best For: Fast transactions, Ethereum compatibility

Base

Mainnet & Sepolia TestnetNative Token: ETH Popular Tokens: USDC, cbETH, DAI Network ID: 8453 (mainnet), 84532 (sepolia)Best For: Coinbase ecosystem integration

Additional Networks

More Networks Available:

BSC (Binance Smart Chain)
Avalanche C-Chain
Fantom Opera
Gnosis Chain
Celo

Currency Categories

Major Cryptocurrencies

Native Tokens
Stablecoins
Popular Tokens

Blockchain Native Currencies:

Currency	Symbol	Chains Available
Ethereum	ETH	Ethereum, Arbitrum, Optimism, Base
Polygon	MATIC	Polygon
Binance Coin	BNB	BSC
Avalanche	AVAX	Avalanche
Fantom	FTM	Fantom

USD-Pegged Stablecoins:

Currency	Symbol	Chains Available
USD Coin	USDC	All supported chains
Tether	USDT	Ethereum, Polygon, BSC, Avalanche
DAI	DAI	Ethereum, Polygon, Arbitrum, Optimism
BUSD	BUSD	BSC, Ethereum
FRAX	FRAX	Ethereum, Polygon, Arbitrum

Other Stablecoins:

USDC.e (bridged USDC on various chains)
sUSD (Synthetix USD)
LUSD (Liquity USD)
And many more…

DeFi & Ecosystem Tokens:

Currency	Symbol	Primary Chains
Chainlink	LINK	Ethereum, Polygon, Arbitrum
Uniswap	UNI	Ethereum, Polygon, Arbitrum
Aave	AAVE	Ethereum, Polygon
Compound	COMP	Ethereum
Curve DAO	CRV	Ethereum, Polygon
1inch	1INCH	Ethereum, BSC

Fiat Currencies

Major Fiat Currencies

G7 & Major Global Currencies:

Currency	Code	Region
US Dollar	USD	United States
Euro	EUR	European Union
British Pound	GBP	United Kingdom
Japanese Yen	JPY	Japan
Canadian Dollar	CAD	Canada
Australian Dollar	AUD	Australia
Swiss Franc	CHF	Switzerland
Chinese Yuan	CNY	China

Note: Fiat currencies are used for pricing and conversion. Actual payments settle in cryptocurrency.

Emerging Market Currencies

Regional Currencies:

Currency	Code	Region
Brazilian Real	BRL	Brazil
Indian Rupee	INR	India
Mexican Peso	MXN	Mexico
South African Rand	ZAR	South Africa
Turkish Lira	TRY	Turkey
Russian Ruble	RUB	Russia
Korean Won	KRW	South Korea
Thai Baht	THB	Thailand

Total Coverage: 150+ international fiat currencies

Currency Selection Guide

For Different Use Cases

📄 Invoicing

Recommended Currencies:

Pricing: USD, EUR, GBP (familiar fiat terms)
Settlement: USDC, USDT, DAI (stable value)
Networks: Polygon, Arbitrum (lower fees)

Learn More →

💰 Payouts

Recommended Currencies:

High Volume: USDC on Polygon (lowest fees)
Cross-border: USDC, USDT (global acceptance)
Flexibility: Native tokens for local markets

Learn More →

🛒 Checkout

Recommended Currencies:

Customer Choice: Multiple payment options
Conversion: USD pricing, crypto settlement
Popular: ETH, USDC, MATIC, BNB

Learn More →

🔄 Subscriptions

Recommended Currencies:

Stability: USDC, DAI (predictable values)
Low Fees: Polygon, Arbitrum networks
Reliability: Established stablecoins

Learn More →

Network Selection Criteria

Cost Optimization

Transaction Fees
Speed & Finality
Liquidity & Adoption

Average Transaction Costs (2025):

Network	Native Transfer	ERC-20 Transfer	Typical Use
Polygon	$0.001-0.01	$0.01-0.03	High volume, frequent transactions
Arbitrum	$0.10-0.50	$0.20-1.00	Ethereum ecosystem, medium volume
Optimism	$0.10-0.50	$0.20-1.00	Ethereum ecosystem, medium volume
Base	$0.05-0.25	$0.10-0.50	Coinbase integration
Ethereum	$2-20	$5-50	High value, infrequent transactions

Fee Optimization Tips

Use Polygon for high-frequency, low-value transactions
Use Ethereum for high-value, security-critical transactions
Consider L2 solutions (Arbitrum, Optimism) for balanced cost/security

Transaction Confirmation Times:

Network	Block Time	Practical Finality	Best For
Polygon	2 seconds	30-60 seconds	Real-time applications
Base	2 seconds	30-60 seconds	Fast user experiences
Arbitrum	1 second	5-15 minutes	Balanced speed/security
Optimism	2 seconds	5-15 minutes	Balanced speed/security
Ethereum	12 seconds	5-15 minutes	Maximum security

Network Ecosystem Maturity:

Network	TVL	DEX Liquidity	Ecosystem	Adoption
Ethereum	Highest	Highest	Most mature	Universal
Polygon	High	High	Very mature	High
Arbitrum	High	High	Mature	High
Optimism	Medium	Medium	Growing	Medium
Base	Growing	Growing	New but strong	Growing

Currency Codes and Formats

Standard Format

Request Network uses standardized currency codes:

// Format: {SYMBOL}-{NETWORK}
"ETH-mainnet"        // Ethereum on Ethereum mainnet
"MATIC-matic"        // MATIC on Polygon mainnet
"ETH-arbitrum-one"   // ETH on Arbitrum One
"ETH-optimism"       // ETH on Optimism
"BNB-bsc"           // BNB on BSC

// Format: {SYMBOL}-{NETWORK}-{OPTIONAL_SUFFIX}
"USDC-mainnet"       // USDC on Ethereum
"USDC-matic"         // USDC on Polygon
"USDC-arbitrum-one"  // USDC on Arbitrum
"USDC-optimism"      // USDC on Optimism
"USDT-mainnet"       // USDT on Ethereum
"DAI-mainnet"        // DAI on Ethereum

// Format: {ISO_CODE}
"USD"                // US Dollar
"EUR"                // Euro
"GBP"                // British Pound
"JPY"                // Japanese Yen
"CAD"                // Canadian Dollar

Currency Validation

import { validateCurrency } from '@requestnetwork/request-client.js';

// Check if currency is supported
const isValid = validateCurrency('USDC-matic');
console.log(isValid); // true

// Get currency details
const currencyInfo = getCurrencyInfo('USDC-matic');
console.log(currencyInfo);
// {
//   symbol: 'USDC',
//   network: 'matic',
//   type: 'ERC20',
//   decimals: 6,
//   address: '0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174'
// }

// Check supported currencies via API
const response = await fetch('https://api.request.network/v2/currencies', {
  headers: {
    'Authorization': `Bearer ${apiKey}`
  }
});

const currencies = await response.json();
console.log(currencies.supported);

Real-Time Price Data

Request Network uses multiple price feed sources for accurate conversions:

Price Oracle Sources

Primary Data Sources:

Chainlink Price Feeds (on-chain)
CoinGecko API (market aggregation)
CoinMarketCap API (market data)
DEX aggregators (real-time trading data)

Update Frequency: Sub-minute updates for major pairs

Supported Conversion Pairs

Fiat to Crypto:

Any fiat currency → Any supported cryptocurrency
Real-time exchange rate calculation
Slippage protection for large amounts

Crypto to Crypto:

Crosschain token conversions
Optimal routing through DEX aggregators
Minimal slippage and MEV protection

What’s Next?

� Token List

Complete token list with contract addresses and chain details

⚙️ Payment Types

Learn about different payment types and currency options

🛠️ Integration

Start building with your preferred currencies and networks

🌐 NEAR Blockchain

Learn about NEAR blockchain support and unique features

🌐 Developer Resources

🛠️ Tools & Examples

🏗️ Architecture

📖 Documentation

Overview

Supported Blockchain Networks

Ethereum

Polygon

Arbitrum

Optimism

Base

Additional Networks

Currency Categories

Major Cryptocurrencies

Fiat Currencies

Currency Selection Guide

For Different Use Cases

📄 Invoicing

💰 Payouts

🛒 Checkout

🔄 Subscriptions

Network Selection Criteria

Cost Optimization

Currency Codes and Formats

Standard Format

Currency Validation

Real-Time Price Data

What’s Next?

� Token List

⚙️ Payment Types

🛠️ Integration

🌐 NEAR Blockchain

​Overview

​Supported Blockchain Networks

Ethereum

Polygon

Arbitrum

Optimism

Base

Additional Networks

​Currency Categories

​Major Cryptocurrencies

​Fiat Currencies

​Currency Selection Guide

​For Different Use Cases

📄 Invoicing

💰 Payouts

🛒 Checkout

🔄 Subscriptions

​Network Selection Criteria

​Cost Optimization

​Currency Codes and Formats

​Standard Format

​Currency Validation

​Real-Time Price Data

​What’s Next?

� Token List

⚙️ Payment Types

🛠️ Integration

🌐 NEAR Blockchain

Overview

Supported Blockchain Networks

Currency Categories

Major Cryptocurrencies

Fiat Currencies

Currency Selection Guide

For Different Use Cases

Network Selection Criteria

Cost Optimization

Currency Codes and Formats

Standard Format

Currency Validation

Real-Time Price Data

What’s Next?