"Immigrant" badge - When you show that you have moved from another website Polish

Note: This is voluntary and optional, user choice.
When you prove that an account on, for example, Reddit or the pit is yours, and continue it on kbin, you get the "Immigrant" badge. This requires closing the account on the previous site. Prove it, for example, through an entry in web.archive.org?

And when you only visit kbin, but you are still on reddit, you can be called, for example, "Temporary Resident". (I don't have a good name) Then you don't have to delete your account on the previous website.

EDIT: This badge can be with the number of years on the previous website.