Maybe we could map a discrete GUID to some amount of cubic volume of the universe and say that you 'own' that GUID and cubic volume of space.
Referencing how many possible GUID can exist:
The total number of theoretically possible GUIDs (Globally Unique Identifiers) is 2¹²⁸, which equals exactly 340,282,366,920,938,463,463,374,607,431,768,211,456. This is approximately 3.4 × 10³⁸ (340 undecillion) unique values
a really quick calculation says that if you assigned every cubic area of the universe (ignoring that it's spherical?!) to a single GUID, each GUID would 'own' a cube of space about 680 AU on each side. So there's not really that many GUID.
Referencing how many possible GUID can exist:
The total number of theoretically possible GUIDs (Globally Unique Identifiers) is 2¹²⁸, which equals exactly 340,282,366,920,938,463,463,374,607,431,768,211,456. This is approximately 3.4 × 10³⁸ (340 undecillion) unique values
a really quick calculation says that if you assigned every cubic area of the universe (ignoring that it's spherical?!) to a single GUID, each GUID would 'own' a cube of space about 680 AU on each side. So there's not really that many GUID.