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How to add networks to MetaMask

Nevermined is currently available on 3 blockchain networks.

Depending on the network you prefer to use, you need to add some network data to your MetaMask wallet.

For testing purposes, we have also deployed the application on the following testnets. Using these networks has the benefit you can try the application while using 'test tokens' (without any value) to pay for transaction fees.

Get Ready​

Before you add any of these networks, make sure you are logged in to your MetaMask. Go to the extension menu in your browser, click on the Metamask icon and login with your password.

Step 1: Go to 'Add Network'​

  • Click the Circle icon in the top right corner of the app.
  • From the drop down menu select "Settings".

Then

  • Scroll down and locate the Networks tab.
  • Scroll to the bottom and click on the blue "Add Network" button.

Step 2: Add the network details​

Fill in the required fields for your preferred network. We have listed the 3 main networks and the 3 test networks below.

Polygon Mainnet (sometimes also refered to as Matic).​

For the most up to date network details, visit the Polygon website.

Network Name: Polygon Mainnet
New RPC URL: https://polygon-rpc.com/
ChainID: 137
Currency Symbol: MATIC
Block Explorer URL: https://polygonscan.com/

Gnosis Mainnet​

For the most up to date network details, visit the Gnosis website.

Network Name: Gnosis
New RPC URL: https://rpc.gnosischain.com
ChainID: 100
Currency Symbol: XDAI
Block Explorer URL: https://gnosisscan.io

Arbitrum One Mainnet​

For the most up to date network details, visit a website like https://chainlist.org/ or check other Arbitrum documentation.

Network Name: Arbitrum One
New RPC URL: https://arb1.arbitrum.io/rpc
ChainID: 42161
Currency Symbol: ETH
Block Explorer URL: https://arbiscan.io

Polygon Mumbai Testnet​

For the most up to date network details, visit the Polygon website.

Network Name: Mumbai Testnet
New RPC URL: https://rpc-mumbai.maticvigil.com/
ChainID: 80001
Currency Symbol: MATIC
Block Explorer URL: https://mumbai.polygonscan.com/

Gnosis Chiado Testnet​

For the most up to date network details, visit the Gnosis website.

Network Name: Chiado Testnet
New RPC URL: https://rpc.chiadochain.net
ChainID: 10200
Currency Symbol: XDAI
Block Explorer URL: https://blockscout.com/gnosis/chiado

Arbitrum Sepolia Testnet​

For the most up to date network details, visit a website like https://chainlist.org/ or check other Arbitrum documentation.

Network Name: Arbitrum Sepolia Testnet
New RPC URL: https://sepolia-rollup.arbitrum.io/rpc
ChainID: 421614
Currency Symbol: ETH
Block Explorer URL: https://sepolia.arbiscan.io/