Base Mainnet for Builder Guide

2 min readJul 20


A guide on how to interact with Base Mainnet for builder to be eligible for a potential airdrop.

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On this guide, we will bridge ETH from Ethereum to Base. We will mint builder NFT.

Wallet Setup:


  • There is no User Interface of bridge now, so you need to bridge ETH to Base mainnet by sending ETH to bridge contract.
  • Send ETH here: 0x49048044D57e1C92A77f79988d21Fa8fAF74E97e (INFO) > you will receive ETH on Base after successful transaction.

Verify Signature:

  • Go to > click on ‘Sign Message’ > connect wallet > again click ‘Sign Message’ > copy & paste this message ‘ all your base are belong to you. ’ on Message to Sign field > click ‘Sign Message’ > sign on wallet.
  • Then copy signature hash now or later > click ‘Publish’.

NFT mint:

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