The Avalanche Bridge™ protocol can be used to transfer ERC20 tokens from Ethereum to Avalanche® C-Chain and vice versa. This document answers common questions about bridging between the Ethereum and Avalanche networks. If there are additional questions, please contact the Ava Labs team on the Avalanche support website, Discord, or Telegram.
Airdrops and Fees
What are the onboarding and offboarding fees for the Avalanche Bridge™?
What are the onboarding and offboarding fees for the Avalanche Bridge™?
WBTC and WETH:$3 from Ethereum to Avalanche. $20 from Avalanche to Ethereum.
All other tokens follow the below fee structure:
When bridging from Ethereum to Avalanche®, a fee of 0.025% of the bridged amount will apply, subject to a minimum fee of $3 and a maximum fee of $250.
When bridging from Avalanche® to Ethereum, a fee of 0.1% of the bridged amount will apply, subject to a minimum fee of $12 and a maximum fee of $1,000.
What if the gas price is more than the amount I am transferring?
What if the gas price is more than the amount I am transferring?
The bridge UI does not allow transfers of less than the gas price / fee amount.
How do I pay transaction fees on the Avalanche® network?
How do I pay transaction fees on the Avalanche® network?
Transaction fees on the Avalanche network are paid in AVAX. A small airdrop will be provided to users who bridge over $75 worth of assets to the Avalanche network for their initial transactions. Users will want to acquire more AVAX for future transactions and can do so directly in Core by swapping for AVAX or purchasing AVAX directly.
Is there an airdrop provided for Ethereum transactions on the Avalanche Bridge™?
Is there an airdrop provided for Ethereum transactions on the Avalanche Bridge™?
When users bridge $75 or more of assets from the Ethereum network to the Avalanche® network, a portion of AVAX® will be airdropped to help pay for initial swaps. Users may choose to use those funds to acquire additional AVAX, as this will be needed to pay for fees on any dApp within the Avalanche network.
Transactions
Can I speed up my transaction?
Can I speed up my transaction?
Users can speed up the Ethereum network transaction through MetaMask. Click here for more information on how to do so.
How long does an Avalanche Bridge™ transfer take?
How long does an Avalanche Bridge™ transfer take?
The Ethereum network transaction will typically take around 20 minutes (96 confirmations). The Avalanche network transaction takes a few seconds.
What if my transaction is not visible in the Explorer?
What if my transaction is not visible in the Explorer?
To view the Avalanche network transaction, please enter the TXID on the Avalanche Explorer. For Ethereum network transactions, please enter the TXID on Etherscan. To view recent Avalanche Bridge transactions, users can look here for transactions on the Avalanche network and here for transactions on Ethereum. If neither option works, please reach out on Telegram or Discord.
General
What does the .e suffix in the token name mean?
What does the .e suffix in the token name mean?
When bridging assets from Ethereum to Avalanche, they will arrive on the Avalanche network with the “.e” designation, indicating that they are a bridgeable asset.
When bridging the assets back to the Ethereum network, the “.e” designation is removed.
Can I send tokens created on the Avalanche® network to Ethereum?
Can I send tokens created on the Avalanche® network to Ethereum?
No. The Avalanche Bridge™ currently only supports the transfer of ERC-20 tokens created on Ethereum to the Avalanche network and back.
Can I send it to a different address on the other network?
Can I send it to a different address on the other network?
The Avalanche Bridge™ only allows transfers to the same address on the other network.
What are the Avalanche Bridge™ addresses on the Ethereum and Avalanche® networks?
What are the Avalanche Bridge™ addresses on the Ethereum and Avalanche® networks?
Avalanche: 0xeb1bb70123b2f43419d070d7fde5618971cc2f8f
NOTE: Do not send tokens directly to these addresses.
Important Information
To ensure the safety of users and the protection of their funds, the Avalanche Bridge™ should only be accessed and used through the UI, located here. Any other use of the Avalanche Bridge could result in the permanent loss of funds. The non-exhaustive list below enumerates possible ways to permanently lose funds by attempting to use the Avalanche Bridge through sources that are not recommended. Funds lost in the examples listed below will be permanently lost, and are not recoverable by Ava Labs, the Bridge Nodes, or the Avalanche Bridge.
USERS MUST NOT SEND FUNDS DIRECTLY TO ANY OF THE AVALANCHE BRIDGE CONTRACT ADDRESSES. The Avalanche Bridge should only be accessed through the Avalanche Bridge UI, located here. Any funds sent directly to the Avalanche Bridge contract addresses will be permanently lost, and are not recoverable.
USERS MUST NOT SEND FUNDS DIRECTLY TO ANY OF THE AVALANCHE BRIDGE WALLET ADDRESSES. The Avalanche Bridge should only be accessed through the Avalanche Bridge UI, located here. Any funds sent directly to the Avalanche Bridge wallet addresses will be permanently lost and not recoverable.
DO NOT ATTEMPT TO USE ANY SMART-CONTRACT WALLET WITH THE AVALANCHE BRIDGE. The Avalanche Bridge is currently not compatible with smart contract wallets because smart contracts are currently not supported by the Avalanche Bridge. Using the Avalanche Bridge with a smart contract wallet or smart contract will result in the permanent loss of funds. Users should not use smart contracts with the Avalanche Bridge at this time because no one can retrieve tokens lost when smart contract wallets try to use the Avalanche Bridge. This is not a statement against smart contract wallets or the below list of smart contract wallet projects, which is not an exhaustive list. This is to make users aware of the current technical architecture. WE CAN NOT RETRIEVE YOUR TOKENS.
User Notes
For a more in-depth read on how the Avalanche Bridge works, please read the following articles.
By accessing or using the Avalanche Bridge, you agree to be bound by the Terms of Use. IF YOU DO NOT AGREE WITH SUCH TERMS, THEN YOU ARE EXPRESSLY PROHIBITED FROM USING THE AVALANCHE BRIDGE AND YOU MUST DISCONTINUE USE IMMEDIATELY.
For any additional questions, please view our other knowledge base articles or contact a support team member via the chat button. Examples are for illustrative purposes only.