A bridge is a tool that allows users to move assets such as ETH from Ethereum to Abstract and vice versa. Under the hood, bridging works by having two smart contracts deployed:

  1. A smart contract deployed to Ethereum (L1).
  2. A smart contract deployed to Abstract (L2).

These smart contracts communicate with each other to facilitate the deposit and withdrawal of assets between the two chains.

Native Bridge

Abstract has a native bridge to move assets between Ethereum and Abstract for free (excluding gas fees) that supports bridging both ETH and ERC-20 tokens.

Deposits from L1 to L2 take around ~15 minutes, whereas withdrawals from L2 to L1 currently take up to 24 hours due to the built-in withdrawal delay.

Abstract Native Bridge

Visit the native bridge to move assets between Ethereum and Abstract for free.

Third Party Bridges

In addition to the native bridge, users can also utilize third-party bridges to move assets between Ethereum and Abstract. These bridges offer alternative routes and may come with different features but also have different risks.

Relay

Relay provides near-instant transfers between Ethereum and Abstract for a small fee. It works by connecting users with relayers that act on users’ behalfs across chains in exchange for a small fee.