Wow, if you brought a paper contract to court that mutated itself depending which way you look at the paper, I wonder what a judge would think of that?

Personally I would crumple it up and pitch it out the window. I don't know why they can't simply be clear about what clauses apply to which geographies. An IP address should not be assumed as a reliable indicator of the jurisdiction in which an end-user resides. (Eg. In addition of VPNs's and unexpected routing, what happens if you travel?)

I once wrote a contract document in PostScript that changed the wording based on the date. Two parties could cryptographically sign an agreement in the document, which would change when printed on a later date.

One of the reasons we don’t use PostScript so much any more.