Grab Testnet Funds On Arbitrum Goerli (Arbitrum Nitro Faucet)šŸš°

Elias Tazartes
4 min readSep 28, 2022

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Hey there! Letā€™s grab some Arbitrum Goerli funds!

Goerli is an Ethereum Testnet. It essentially behaves like Ethereum, but money is fake there.

Arbitrum is an Ethereum Layer 2. A Layer 2 is a blockchain, with its own applications layer. At regular intervals, it commits to Ethereum mainnet all its new state, thus leveraging Ethereumā€™s security and resilience.
Arbitrum Goerli is simply the Layer 2 testnet for Goerli, meaning itā€™s a Layer 2 of Goerli.

Recap: Arbitrum One (also called Arbitrum) is a layer 2 chain of Ethereum. Arbitrum Goerli (also known as Arbitrum Nitro Goerli Rollup) is a Goerli layer 2.

To deploy contracts, interact with contracts etc. on Arbitrum Goerli, youā€™ll need Goerli Ethereum (goerli ETH) to pay for ā€˜gasā€™.

šŸ’« Prerequisites for grabbing free testnet coins:

  • Have a wallet on your phone and/or browser. The simplest wallet to install is probably Metamask. Youā€™ll need to install the metamask mobile app.
  • Create a wallet (never share your mnemonic or private key)
  • Know your address:
Metamask Mobile App Wallet Interface
Metamask Mobile App Wallet Interface

Note that the address is the string starting with 0x in between the balance ($0) and the Receive, Send and Swap buttons. Note that it is the same for all EVM chains (Ethereum, Arbitrum, Goerli, Arbitrum Goerli). It is the chain ID that changes. This means that when staying in the Ethereum ecosystem, you have one unique address (with one unique private key, donā€™t share it).

šŸ§žā€ā™‚ļø How to add Arbitrum Goerli to your metamask networks?

Some networks are pre-populated in your metamask. For instance Ethereum mainnet. Neither Arbitrum nor Arbitrum Goerli is pre-added to your metamask. Letā€™s add it now.

  • In your metamask mobile app, at the top of the screen (in the wallet tab), click on the Wallet button
Metamask Wallet Interface
Metamask Wallet Interface
  • Select Add a network.
Adding a Network Modal on the Metamask Mobile Application
Adding a network on Metamask Mobile
  • At the top, select the Custom Networks tab.

Then, fill the fields using:

Source: Public Chains | Arbitrum Documentation

  • Then, click Add

There you go! You should be able to see your funds now. If you donā€™t have any Arbitrum Goerli ether, you should see 0 on your balance. But fret not! Letā€™s go grab some.

šŸ’ø Grabbing some Arbitrum Goerli Ether

Option 1: Asking on Twitter for a bot to drop you some coins

  • Tweet at @nitro_devnet with the keywords ā€œnitro testnetā€œ and your blockchain public address like so:
Asking for Faucet coins on Twitter

Option 2: Use the Goerli faucet then bridge your funds

Go to Faucet Goerli: https://goerlifaucet.com/

  • Add your wallet address and click Send me Eth
Goerli Faucet app
  • You should receive some Goerli ether. Careful, this means youā€™re getting funds on the Goerli testnet, not the Arbitrum Goerli testnet.
  • Go to the Arbitrum Bridge:

A bridge is a web app allowing you to transfer funds or assets between blockchains. Here, we want to transfer funds from Goerli to Arbitrum Goerli

Arbitrum Goerli Bridge
  • Transfer funds and await success!
Arbitrum Goerli bridge success message
Arbitrum Bridge pending transaction time
  • And tada! Weā€™re all set. You should see some Arbitrum Goerli in your wallet.

Thanks for reading and have a good one! šŸ—

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Elias Tazartes
Elias Tazartes

Written by Elias Tazartes

building Kakarot zkEVMšŸ‘· šŸ¦€ šŸ—

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