How to operate mainnet WTC coins in MetaMask:

Go to https://metamask.io/, download and install the extension for your browser, register a new address (or import an existing address with a 12-word mnemonic seed, this step is only needed to log in, the address itself is not used further) and log in. After the wallet is connected, press Main Ethereum Network — Custom RPC and enter these network settings:

Name: WTC

New RPC URL: https://node.waltonchain.pro

ChainID: 15

Symbol: WTC

and press Save. After the setup is completed, press Main Ethereum Network and select WTC.