ENS can be useful outside of Ethereum. I can sign a message and you can look up who it's from via ENS. I can also use it as the domain name for a site hosted on

ENS can be useful outside of Ethereum. I can sign a message and you can look up who it's from via ENS. I can also use it as the domain name for a site hosted on IPFS. It's a way of tying names to public keys in a decentralized way. It doesn't have to be used only for identifying Ethereum wallets.