How to Verify Discord account
An unclaimed account on Discord means that the account has no owner and no other member has claimed the account.
If you don’t have a Discord account and are given a link to a server (e.g. https://discord.gg/discord-developers), you a prompted to just enter a username. Once you enter it, you’re free to move about the server. However, this account is considered “unclaimed,” it has no owner, or way to get back in. To sign into Discord, you need an email and a password, however you’ve given neither. Once you enter an email and password, you’re “claiming” the account and are able to sign in back right where you left off. To claim an account means to be able to sign in with it again.