Creators with worlds that rely on web requests to display information may find their endpoints exploited by unknown other worlds or even asset rips.
Assuming a ripped world or unknown other world were to contain a different blueprint id, the creator could return different content that notifies the end user that their experience may be degraded or that the world is illegitimate.
This solution would also preserve user privacy, as no PII would be inserted into the request, and not present a security loophole or leak information that the author and clients alike did not have full access to; it would simply assure that the request was made from a specific origin, under whose control the original URL ostensibly was in the first place.