Metamask: Add Arbitrum Testnet Network

To configure Metamask for the Arbitrum Test Network we must add a new RPC Network. For this, open Metamask, access the accounts menu at the top-right corner and select Settings:

Scroll down to the Networks section and select it:

At the bottom click on Add Network and fill in the following data:

Finally select the Arbitrum Rinkeby in Metamask's network selector (drop down at the top of Metamask):

You are connected to the Arbitrum Rinkeby now.

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