ENS

The Ethereum Name Service (ENS) is a decentralized, open, and expandable naming protocol. ENS was built to make wallet addresses on Ethereum human-readable, but now supports many different blockchains and works with the DNS domain system by turning traditional domains like .com and .xyz into wallet addresses and usernames.

Every ENS name has the ability to become its own namespace. L2s and companies can simply create subnames like user.linea.eth as brand-related usernames for their community.

A name like user.linea.eth works across different blockchains and can be used to receive crypto, log in to dapps, or create a portable profile.