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Bridging tokens between Etherlink and other EVM networks

The Etherlink wrapped asset bridge is a web application that allows you to transfer wrapped tokens between Etherlink and several other EVM-compatible blockchain networks. The bridge uses the decentralized smart contracts of LayerZero that are deployed on each of those networks without the intervention of a third party.

The EVM bridge supports connections from Etherlink to these networks:

  • Ethereum
  • Avalanche C-Chain
  • Arbitrum One
  • Optimism
  • Base
  • BNB Chain

It allows users to transfer several wrapped tokens, including:

  • USDT
  • USDC
  • WBTC
  • WETH
  • WAVAX
  • WBNB
  • SHIB

For the Etherlink addresses of these tokens, see Token addresses.

Using the wrapped asset bridge​

For a video walkthrough of the bridge, see this video:

Overview of the wrapped asset bridge

  1. Go to the Etherlink wrapped asset bridge at https://www.etherlinkbridge.com/bridge.

  2. Click the Connect button and connect your EVM wallet.

  3. Select the source network from which to bridge tokens to Etherlink, or select Etherlink as the source network to bridge tokens out of Etherlink.

  4. Next to the source network, click the source token and select the token to transfer from the source network. The interface shows all bridgeable tokens across all available networks and your token balances.

  5. Enter the number of tokens to bridge out of the source network.

  6. Select the target network and token.

    The page shows the amount of tokens that you will receive on the target chain and the fees for the token transfer in the native gas token of the source chain.

    You must ensure that you have enough tokens on the source chain to pay the fees.

  7. Set the other parameters for the transfer, including the Gas on destination and Slippage tolerance fields.

    Gas on destination

    Interacting with Etherlink requires XTZ (its native token) to pay for gas fees. As part of your bridging transaction, you can choose to send up to 0.1 XTZ to your Etherlink wallet address to pay for fees for later transactions and interact with the Etherlink ecosystem. The cost of this XTZ is added to the fees that you pay for the transfer. By default, the bridge adds 0.1 XTZ if the destination account has no XTZ.

  8. To make the transfer, click Transfer and confirm the transfer in your wallet.

The bridge shows a popup with a link to LayerZero Scan where you can observe the progress of the bridge transaction and see an estimated time to completion. When the status changes to "completed," the tokens are in your EVM account. If you don't see the tokens, you may need to import the token into your wallet on the destination network.

Troubleshooting​

The transfer button can show these errors:

  • Insufficient Balance

    You entered a higher amount of tokens than you hold in your account. Reduce the amount you want to transfer or add more tokens to your wallet.

  • Not Enough Native for Gas

    You must own more gas on the source chain to pay the required fees. Send more of the source chain's native gas token to your wallet.

  • Select Different Chain

    The source and destination chains are not compatible. This bridge is for moving tokens in and out of Etherlink, not for moving tokens between other networks.

  • Transfer Cap Reached

    The bridge cannot transfer the amount of tokens that you have selected. Select a smaller amount to transfer.

    This error can occur for bridgeable tokens that exist on multiple networks (ETH/WETH, USDT and USDC). For example, if the bridge contract on Avalanche has 100 USDT, you can transfer no more than 100 USDT from Etherlink to Avalanche.

For further support, visit the LayerZero Discord.

If you have general questions about Etherlink, we welcome you to join the Etherlink Discord Community.

Token addresses​

note

Not all Etherlink tokens can be bridged to and from other chains. See the tables below for the tokens that the bridge supports for each chain.

This table shows the Etherlink address of tokens that you can bridge between Etherlink and certain other chains:

SymbolNameMainnet address
USDCUSD Coin
0x796...00F9
USDTTether USD
0x2C0...fE6a
WBTCWrapped BTC
0xbFc...sd0F
WETHWrapped Ether
0xfc2...B401
WBNBWrapped BNB
0xaA4...0d8C
WAVAXWrapped AVAX
0xe82...B644
SHIBSHIBA INU
0xBBD...5181

These tables show the addresses of the equivalent tokens on other networks:

Ethereum​

SymbolNameMainnet address
USDCUSD Coin
0xA0b...eB48
USDTTether USD
0xdAC...1ec7
WBTCWrapped BTC
0x226...C599
WETHWrapped Ether
0xC02...6Cc2
SHIBSHIBA INU
0x95a...C4cE

Arbitrum One​

NameSymbolMainnet address
USDCUSD Coin
0xaf8...5831
USDTTether USD
0xFd0...Cbb9
WBTCWrapped BTC
0x2f2...5B0f
WETHWrapped Ether
0x82a...Bab1

Base​

NameSymbolMainnet address
USDCUSD Coin
0x833...2913
WETHWrapped Ether
0x420...0006

Optimism​

NameSymbolMainnet address
USDCUSD Coin
0x0b2...Ff85
USDTTether USD
0x94b...8e58
WETHWrapped Ether
0x420...0006

BNB Chain​

NameSymbolMainnet address
USDCUSD Coin
0x8ac...580d
USDTTether USD
0x55d...7955
WBNBWrapped BNB
0xbb4...095c

Avalanche C-Chain​

NameSymbolMainnet address
USDCUSD Coin
0xB97...8a6E
USDTTether USD
0x970...A8c7
WAVAXWrapped AVAX
B31f6...66c7

How bridging wrapped assets works​

The Etherlink wrapped asset bridge uses a wrapped asset bridge created by LayerZero. It works by maintaining liquidity pools on other networks and minting equivalent tokens on Etherlink.

When you bridge tokens from other networks to Etherlink, the bridge contracts lock the tokens in a liquidity pool on the source network, send a message over LayerZero's software to Etherlink, and mint tokens on Etherlink. When you bridge tokens out of Etherlink, the contracts burn the tokens on Etherlink and unlock them in the liquidity pool on the target network. Therefore, bridging tokens out of Etherlink is dependent on the liquidity pool on the target chain. LayerZero also maintains Etherlink EVM and Smart Rollup nodes to verify that the transactions complete on Etherlink.

This diagram shows how the wrapped asset bridge works:

Overview of the wrapped asset bridge, showing the interaction between contracts on other chains and Etherlink, moderated by LayerZero

For more information, see the repository for the bridge: https://github.com/LayerZero-Labs/wrapped-asset-bridge.

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