Skip to content
Nouns Builder

Bridging on Nouns Builder

What is bridging?
Section titled “What is bridging?”

A blockchain bridge is a tool that connects two separate blockchain networks to enable assets to be transferred between them. This includes bridges that connect Ethereum (“Layer 1” or “L1”) to Layer 2 (“L2”) networks like Zora Network, OP Mainnet and Base that sit on top of Ethereum to enhance the speed and reduce the costs of performing onchain transactions. Nouns Builder’s native bridge allows you to transfer your ETH from Ethereum to the Zora Network, OP Mainnet and Base.

Why do I need to bridge my ETH?
Section titled “Why do I need to bridge my ETH?”

You must bridge your ETH to an L2 in order to transact on the L2, for example, to bid on L2 auctions or vote on L2 proposals.

What happens to my ETH when I am bridging?
Section titled “What happens to my ETH when I am bridging?”

By bridging your ETH, you make it available for use on the L2. When you bridge ETH to an L2 supported on Nouns Builder (Zora Network, OP Mainnet, Base), your ETH is locked on L1 in the canonical bridge contract and a corresponding representation is made available on the L2. You control both sides with your wallet keys; Nouns Builder does not take custody. Bridged ETH is not spendable on L1 until you withdraw it back through the bridge.

Bridging ETH to L2 networks on Nouns Builder

Section titled “Bridging ETH to L2 networks on Nouns Builder”

While we recommend using a commercial third-party bridge to access your funds more quickly, Nouns Builder also provides access to native bridges that are more cost-effective. If you use the native bridges available at nouns.build/bridge, you will experience longer lock times before completion and cannot withdraw using the Builder UI.

For withdrawals and bridging from your L2 DAO treasury to Ethereum Mainnet or another L2, please use the WalletConnect Proposal Template to connect to a third-party bridge.

The Nouns Builder bridge currently supports deposit-only bridging to Zora Network, OP Mainnet and Base. We use the native bridge for each of these L2 networks. The Nouns Builder bridge does not currently support withdrawals. Users will need to use other bridges to withdraw - see below for more details.

To bridge on Nouns Builder:

  1. Connect your wallet on nouns.build.
  2. Select “Bridge” in the navigation bar.
  3. Select the chain you would like to deposit ETH to.
  4. Enter the desired ETH amount.
  5. Click “Bridge” to begin bridging your ETH to the selected network. This will prompt a wallet transaction to accept a gas fee.
  6. Confirm the transaction in your wallet. This may take ~1-2 minutes, depending on how congested Ethereum mainnet is.
  7. Your ETH has been bridged.
  8. Enjoy Nouns Builder on L2!

Bridge UI screenshot showing deposit-only ETH bridge flow

Withdrawing ETH from L2 networks on Nouns Builder

Section titled “Withdrawing ETH from L2 networks on Nouns Builder”

The Nouns Builder bridge does not currently support withdrawals.

To withdraw from Zora Network, OP Mainnet or Base to Ethereum Mainnet: