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

# Ecosystem Bridges

> Available bridge providers and routes for moving assets to and from Base.

Base supports bridging assets from multiple chains including Ethereum, Solana, and Bitcoin. While the bridge on bridge.base.org has been deprecated, there are many bridges that support moving assets between Base and other chains.

## Ethereum and Base

### Superbridge

Superbridge enables you to bridge ETH and other supported assets from Ethereum mainnet (L1) directly to Base.

#### Supported Networks

* [Base Mainnet](https://superbridge.app/?fromChainId=1\&toChainId=8453)
* [Base Sepolia (Testnet)](https://superbridge.app/?fromChainId=11155111\&toChainId=84532)

### Brid.gg

Brid.gg is another option that also helps you bridge ETH and supported assets between Ethereum mainnet (L1) and Base.

#### Supported Networks

* [Base Mainnet](https://www.brid.gg/?fromChainId=1\&toChainId=8453)
* [Base Sepolia (Testnet)](https://testnet.brid.gg/?fromChainId=11155111\&toChainId=84532)

### Programmatic Bridging (Ethereum)

See the [sample code repository](https://github.com/base-org/guides/tree/main/bridge/native) to see how to bridge ETH and ERC-20s from Ethereum to Base.

<Warning>
  **Double check the token address for ERC-20s** You can use any ERC-20 that is
  supported on the network. You can check what assets are on Base and the
  corresponding contract address via [this hub](https://github.com/ethereum-optimism/ethereum-optimism.github.io/tree/master/data).
  Ensure there is an address for `base`, [example](https://github.com/ethereum-optimism/ethereum-optimism.github.io/blob/master/data/WETH/data.json#L16-L18).
  Always test with small amounts to ensure the system is working as expected.
</Warning>

<Warning>
  This implementation can only bridge assets to Base. Do not attempt to alter the
  code to withdraw the assets.
</Warning>

### For Token Issuers

If you have an ERC-20 token deployed on Ethereum and want to enable bridging to Base, use the sample code repository above as a starting point for the standard bridge contracts and get your token listed on the Superchain token list.

***

## Solana and Base

The Base-Solana bridge enables bidirectional token transfers and message passing between Base and Solana networks.

**Key Features:**

* Transfer SOL and SPL tokens between Base and Solana
* Send arbitrary cross-chain messages
* Deploy wrapped tokens on either chain
* Optional auto-relay for instant execution

<CardGroup cols={2}>
  <Card title="Full Documentation" icon="book" href="/base-chain/network-information/base-solana-bridge">
    Complete guide with code examples and contract addresses
  </Card>

  <Card title="Terminally Onchain" icon="terminal" href="https://terminallyonchain.com/">
    Production terminal UI for bridging + contract calls
  </Card>
</CardGroup>

### Contract Addresses

| Network        | Contract       | Address                                        |
| -------------- | -------------- | ---------------------------------------------- |
| Base Mainnet   | Bridge         | `0x3eff766C76a1be2Ce1aCF2B69c78bCae257D5188`   |
| Base Mainnet   | SOL Token      | `0x311935Cd80B76769bF2ecC9D8Ab7635b2139cf82`   |
| Solana Mainnet | Bridge Program | `HNCne2FkVaNghhjKXapxJzPaBvAKDG1Ge3gqhZyfVWLM` |

<Info>
  For testnet addresses and full implementation details, see the [Base-Solana Bridge documentation](/base-chain/network-information/base-solana-bridge#contract-addresses).
</Info>

***

## Bitcoin -> Base

### Garden

Garden is a fast non-custodial Bitcoin bridge that enables you to bridge BTC and other supported assets from Ethereum, Solana, and more, directly to Base.

#### Supported Networks

* [Base Mainnet](https://app.garden.finance/?output-chain=base\&output-asset=cbBTC)
* [Base Sepolia (Testnet)](https://testnet.garden.finance/?output-chain=base_sepolia\&output-asset=USDT)

***

## Disclaimer

Coinbase Technologies, Inc., provides links to these independent service providers for your
convenience but assumes no responsibility for their operations. Any interactions with these
providers are solely between you and the provider.