Is this essentially a "Sign in with Rownd"? Similar to how "Sign in with Google" works? albeit with some anonymous user-tracking helpers at the front.
We also "verify" and authenticate, but that is where we diverge. We also help websites manage "profiles" and "accounts" and that data can be made available for customization and personalization. From what a user sees to how they interact with a site or app.
Finally, we give the user the ability to retroactively "revoke consent" to their data. When they turn it off, the site and app no longer have access to it.