Unstoppable Domains

Unstoppable Domains is a US company that issues domain names recorded on a blockchain, with endings such as .crypto, .nft and .x. Each name is minted as a non-fungible token and held in the buyer's own wallet, and the company has marketed them as a one-off purchase without the yearly renewal fees of ordinary web domains. The main use is to replace a long wallet address with a readable name that apps can translate, so people can send funds to "alice.crypto" instead of a string of characters. The names can also act as a login and profile across Web3 apps. Most of its endings are not part of the official internet naming system, so ordinary browsers need extensions or special support to open them. Also see Ethereum Name Service, a rival naming system.