Outer space, including the moon and other celestial bodies, is not subject to national appropriation by claim of sovereignty, by means of use or occupation, or by any other means.
The Artemis Accords (which had 61 signatory nations as of January 2026) were designed to provide a modern framework for lunar exploration. They reinforce the ban on claiming territory but introduce the concept of Safety Zones.
I have a feeling this is going to be circumvented by the likes of corporate entities. Fines would just become part of the cost of doing business, but the financial profits for the companies that gamble and win would be astronomical (pun intended).