> ## Documentation Index
> Fetch the complete documentation index at: https://help.chainbook.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported Networks

> Blockchain networks and tokens supported by Chainbook

Chainbook supports transaction tracking across multiple blockchain networks. Each network has its own set of supported tokens and features.

## Supported Blockchains

<CardGroup cols={2}>
  <Card title="TRON (TRX)" icon="circle-t">
    Full support for TRON mainnet transactions including TRX and TRC-20 tokens.
  </Card>

  <Card title="Ethereum (ETH)" icon="ethereum">
    Full support for Ethereum mainnet transactions including ETH and ERC-20 tokens.
  </Card>
</CardGroup>

## TRON Network

### Supported Features

| Feature               | Status      |
| --------------------- | ----------- |
| TRX transactions      | ✅ Supported |
| TRC-20 tokens         | ✅ Supported |
| USDT (TRC-20)         | ✅ Supported |
| USDC (TRC-20)         | ✅ Supported |
| Internal transactions | ✅ Supported |
| Smart contract calls  | ✅ Supported |

### Token Support

Chainbook automatically detects and tracks the following TRC-20 tokens:

* **USDT** - Tether USD
* **USDC** - USD Coin
* **USDD** - Decentralized USD
* **BTT** - BitTorrent Token
* **JST** - JUST Token
* **SUN** - Sun Token
* **WIN** - WINk Token

<Note>
  Other TRC-20 tokens are automatically detected and displayed with their contract symbol.
</Note>

### Data Sources

TRON transaction data is fetched from:

* TronScan API for transaction history
* TRON RPC nodes for real-time updates

## Ethereum Network

### Supported Features

| Feature               | Status      |
| --------------------- | ----------- |
| ETH transactions      | ✅ Supported |
| ERC-20 tokens         | ✅ Supported |
| USDT (ERC-20)         | ✅ Supported |
| USDC (ERC-20)         | ✅ Supported |
| Internal transactions | ✅ Supported |
| Smart contract calls  | ✅ Supported |

### Token Support

Chainbook automatically detects and tracks major ERC-20 tokens including:

* **USDT** - Tether USD
* **USDC** - USD Coin
* **DAI** - Dai Stablecoin
* **WETH** - Wrapped Ether
* **WBTC** - Wrapped Bitcoin
* **LINK** - Chainlink
* **UNI** - Uniswap

<Note>
  Other ERC-20 tokens are automatically detected and displayed with their contract symbol.
</Note>

### Data Sources

Ethereum transaction data is fetched from:

* Etherscan API for transaction history
* Ethereum RPC nodes for real-time updates

## Network Selection

When creating a wallet, you select which network it will track:

<Tabs>
  <Tab title="TRON">
    * Enter asset addresses starting with `T`
    * Example: `TLa2f6VPqDgRE67v1736s7bJ8Ray5wYjU7`
    * 34 characters, Base58 encoded
  </Tab>

  <Tab title="Ethereum">
    * Enter asset addresses starting with `0x`
    * Example: `0x742d35Cc6634C0532925a3b844Bc9e7595f5aB00`
    * 42 characters (including 0x prefix), hexadecimal
  </Tab>
</Tabs>

<Warning>
  Each wallet supports only one network. To track assets on different networks, create separate wallets.
</Warning>

## Sync Frequency

| Network  | Initial Sync        | Ongoing Updates |
| -------- | ------------------- | --------------- |
| TRON     | Full history import | Every 5 minutes |
| Ethereum | Full history import | Every 5 minutes |

<Info>
  Initial sync may take longer for assets with extensive transaction history. You'll receive a notification when syncing is complete.
</Info>

## Coming Soon

We're working on adding support for additional networks:

* **Polygon (MATIC)** - EVM-compatible L2 scaling solution
* **BNB Chain** - Binance Smart Chain
* **Arbitrum** - Ethereum L2 rollup
* **Base** - Coinbase L2 network

<Tip>
  Want to request support for a specific network? Contact us at [support@chainbook.app](mailto:support@chainbook.app) with your suggestion.
</Tip>

## API Rate Limits

Chainbook manages API rate limits automatically to ensure reliable syncing:

| Provider  | Rate Limit | Handling             |
| --------- | ---------- | -------------------- |
| TronScan  | 15 req/sec | Automatic throttling |
| Etherscan | 5 req/sec  | Automatic throttling |

<Note>
  If you have a large number of assets, initial syncing may be queued to respect rate limits. Your data will sync completely in the background.
</Note>