How do I add different blockchains to MetaMask?

With the Ethereum network selected, users will then need to click on the "Add Network" button. This button is typically found near the bottom of the network selection screen and allows users to input the details for a new, custom network. Clicking on this button will bring up a new window or prompt where users can enter the required information.

Once the "Add Network" prompt is open, users will be presented with a series of fields that need to be filled out. These fields typically include the network name, chain ID, RPC URL, block explorer URLs, and other relevant details. As users are filling out these fields, they should ensure that all information is entered accurately, as any errors could prevent the network from functioning correctly within MetaMask.

If, while filling out the network details, users happen to see the network they want to add already listed in the available options, they can simply click on the "Add" button next to that network's name. This can save time and ensure that all necessary details are entered correctly, as the network information will already be pre-filled by MetaMask.

After all the required details have been entered and verified, users should click on the "Save" button. This will finalize the process of adding the custom network to MetaMask and make it available for use within the wallet. Once saved, users will be able to switch between the Ethereum mainnet and their custom network by selecting the desired network from the dropdown menu in the MetaMask interface.

To manually add a custom network to MetaMask, users should first open the MetaMask extension in their browser. This can typically be done by clicking on the MetaMask icon located in the browser's toolbar. Once the MetaMask interface is open, users should locate and click on the "Ethereum network" option, which is usually displayed prominently within the main interface.