I know that with Minecraft it was as simple as toggling a line in a config to tell the server to verify the copy as legit, or not. This will break your ability to whitelist and apply permissions properly though, if i recall, as people could just change their name to pretend to be you so you’d only want to use it on servers populated with people you trust completely
Okay, thanks to this post I just discovered Jellyfin and though I haven’t even downloaded it yet because I’m on mobile, i tabbed back over here from reading their description page to thank you for this.
I’ve been looking for other solutions but none of them seemed to be incredibly well supported or implemented