# Multi-Chain

> 12 blockchains. One wallet. One balance.

***

## The Idea

Cryptocurrencies exist on different blockchains — and usually each one requires its own wallet, its own gas token, its own interface. QR Wallet **unifies everything** into a single app.

Your assets on Base, Ethereum, Solana, and Tron — all displayed as a **single USD balance**.

***

## Supported Networks

### EVM Networks (10)

One family, one standard, one Smart Account address:

| Network         | Native Token | Chain ID |
| --------------- | :----------: | :------: |
| **Base**        |      ETH     |   8453   |
| **Ethereum**    |      ETH     |     1    |
| **Arbitrum**    |      ETH     |   42161  |
| **Polygon**     |      POL     |    137   |
| **Optimism**    |      ETH     |    10    |
| **BNB Chain**   |      BNB     |    56    |
| **World Chain** |      ETH     |    480   |
| **HyperEVM**    |     HYPE     |    999   |
| **Plasma**      |      XPL     |   9745   |
| **Monad**       |      MON     |    143   |

### Non-EVM Networks (2)

Separate blockchains with their own addressing and mechanics:

| Network    | Native Token | Highlights                                              |
| ---------- | :----------: | ------------------------------------------------------- |
| **Solana** |      SOL     | High speed, low fees, SPL tokens                        |
| **Tron**   |      TRX     | Popular for USDT transfers, energy model instead of gas |

***

## How Unified Balance Works

```
┌─────────────────────────────────────────┐
│          Your total balance: $1,234.56  │
├─────────────────────────────────────────┤
│  Base       $500.00  (USDC, ETH)        │
│  Arbitrum   $300.00  (USDC, ARB)        │
│  Solana     $250.00  (SOL, USDC)        │
│  Polygon    $100.00  (POL, USDT)        │
│  Tron        $84.56  (TRX, USDT)        │
└─────────────────────────────────────────┘
```

The app automatically:

* Fetches balances from all networks in parallel
* Gets current token prices
* Sums everything into a single USD balance
* Updates on pull-to-refresh and periodically in the background

***

## Cross-Chain Operations

### Sending

Choose a token → choose a network → enter address → send. The app determines which network the token is on.

### Bridge

Need to move tokens between networks? The built-in bridge lets you transfer USDC from Ethereum to Base — right from the swap interface.

### Swap

Token exchange works both within a single network and across networks. More: [Swap & Bridge](https://docs.qr.xyz/features/swap-and-bridge)

***

## One Address for All EVM Networks

Thanks to Smart Account and CREATE2, your address is **identical** across all 10 EVM networks. This means:

* One QR code for receiving on any EVM network
* Sender can choose the network without knowing details
* No need to share different addresses for different networks

> For Solana and Tron — separate addresses, as these blockchains use a different format.

***

## FAQ

**Do I need to switch networks manually?**

For viewing balance — no, everything is visible at once. For sending — you choose the network when creating a transaction.

**Can I receive tokens on a network where SA isn't activated?**

Yes. Funds will arrive at your address. SA activates automatically upon receiving ≥ $5.

**Which tokens are supported?**

All standard ERC-20 tokens on EVM networks, SPL tokens on Solana, TRC-20 on Tron. You can also add custom tokens by contract address.