Not like that. A server name that can be authenticated. Like when you receive an email from your bank (in the metadata), you know it’s legitimate. Each organization can set up their own server to host things they vouch for. With ActivityPub it can be viewed elsewhere with the guarantee that it’s from a trusted source.
This may shock and amaze you but…
there is more than one user for your product. If you don’t know that, it sounds like you either haven’t done a user survey or you haven’t created the correct user profiles (based on that survey).
Creating a “perfect UI” without asking users what they want is not good UX. It’s just masturbation. The user survey tells you that people want A B C, etc. and in which order. You should know exactly how your changes are going to be received when you release them.
Imagine a restaurant that doesn’t ask you what you want. Instead the chef tells you “This is the best food possible” and just makes what they want. That’s what developing without a user survey is like.