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Bridge to B3

Basement Bridge

BasementCross-chain bridge with instant deposits and withdrawals

Relay Bridge

RelayBridge from any EVM chain & Solana to B3

Native Bridge

OP Canonical Bridge with 7-day withdrawal period

Bridge Contract

Direct contract interaction for advanced users

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Cross Chain Bridge

Instant DepositsInstant WithdrawalsLow Fee
Connect your wallet and bridge from major EVM networks in & out of B3.
1

Go to the Basement Bridge

Visit basement.fun/bridge to access the bridge interface.
2

Connect your Wallet

Connect your wallet using MetaMask, Coinbase Wallet, or other supported wallets.
3

Select network & funds

Choose the source network and the amount of funds you want to bridge to B3.
4

Confirm transaction

Confirm the transaction and you’ll receive bridged funds in under a minute.
Your funds will appear in your B3 wallet within 60 seconds.

Use Basement Bridge

BasementStart bridging your assets to B3 with instant deposits and withdrawals

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Instant Bridge

Instant DepositsInstant WithdrawalsLow Fee
Easily bridge from any EVM chain & Solana to B3 with Relay.
1

Go to the Relay Bridge

Visit relay.link to access the Relay bridge interface.
2

Connect your Wallet

Connect your wallet to start the bridging process.
3

Enter bridge amount

Enter the amount of ETH you want to bridge to B3.
4

Confirm transaction

Confirm the transaction and you’ll receive bridged funds in under a minute.
Relay supports bridging from multiple chains including Solana.

Use Relay Bridge

RelayBridge from any EVM chain and Solana to B3 instantly

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Native Bridge

Base to B37-Day WithdrawalsNo Fees
Easily bridge from Base to B3 using the official OP Stack canonical bridge!
Withdrawals from B3 back to Base have a 7-day challenge period for security. Use third-party bridges for instant withdrawals.
1

Visit the bridge

Go to bridge.b3.fun to access the official bridge.
2

Connect your Wallet

Connect your wallet to the bridge interface.
3

Choose direction

Select whether you want to:
  • Deposit: Bring funds from Base → B3
  • Withdraw: Bridge back from B3 → Base
4

Enter amount

Enter the amount of ETH you want to bridge.
5

Complete transaction

Click “Deposit” and confirm the transaction in your wallet.
Deposits to B3 are instant, but withdrawals take 7 days for the challenge period.

Use Official Bridge

Use the battle-tested OP Stack canonical bridge

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Native Transfer (Bridge Contract)

Instant Deposits7-Day WithdrawalsNo Fees
Send Base ETH through the bridge contract. Transfer Base ETH to the following bridge address on Base Mainnet:
This method is for advanced users only. Make sure you’re sending from Base Mainnet to avoid losing funds.
Bridge Address
0x769547a723783FCA36BAaf1ECcf9dfdbF6d09F38
When you send ETH to this address from Base, it will automatically appear in your wallet on B3. This is a direct contract interaction method.
  1. Ensure you’re on Base Mainnet in your wallet
  2. Send ETH to the bridge contract address above
  3. Wait for confirmation - your funds will appear on B3 automatically
  4. Check your B3 wallet - switch to B3 network to see your bridged ETH
Double-check you’re on Base Mainnet before sending. Sending from other networks may result in lost funds.