1 - Open Metamask and select "Custom RPC" from the Network Dropdown.\
2 - In the "Custom RPC" Settings, add in the IDChain network details and click Save:
- Network Name: IDChain
- New RPC URL: https://idchain.one/rpc/
- ChainID (Optional): 0x4a
- Symbol: Eidi
- Block Explorer URL: https://explorer.idchain.one
Note: If IDChain doesn't appear on Metamask, try reinstalling Metamask.