Here's how to find your Artist URI!
- Visit your Artist Profile on the Spotify desktop app (not the web version)
- Click the three dots ("...")
- Click "Share"
- Click "Copy Spotify URI"
If you're trying to find your Album URI instead, see the article here.
A Spotify URI is a link that you can find in the Share menu of any track, album, or artist page on Spotify. When a user clicks a link that consists of a Spotify URI (rather than an URL/HTTP address), they're taken directly to the Spotify application, without having to go through the web page first.