Yes, locking is only available on the Ethereum mainnet. This means that users must have a full node and use Ether (ETH) to interact with the Ethereum blockchain. Locking is a key feature of Ethereum, as it allows users to secure their funds and prevent them from being stolen or lost. By locking funds, users can be sure that their assets are safe and secure, even if their computer or device is lost or damaged. Locking also ensures that users have full control over their funds, as they can only be accessed with their private key.
