Most importantly, their "property rights" are not really rights, to the extent that there is no third party to enforce them. Suppose that a bully takes the bracelet or bow from a weaker tribesman, "because I am strong and you are a wimp". The victim will be unhappy, but so what? If the rest of the tribe forces the bully to return the object, there you have governmet and laws, even if unformalized and unwritten. If the others don't care, what would be the point of saying that the victim has "property rights" over the object?
Where I live there are still nomadic people (the Sámi) and yes they do have personal things
like clothes and tools and flocks of reindeer as they have had for
thousand years. The major thing that distinguishes them is their
wandering pastoral lifestyle instead of agricultural-based one, that ties one to
the soil.
If the tribesmen come to the defense of someone who has been robbed
of his belongings, that does not mean some kind of primitive police
or government but simply the collective acknowledgement of intrinsic
right to primitive property.
My view is simply that notion of property
predates legal formulations
upheld by government, whereas you appeared to claim that it is
created by them
and would not exist without them. And it follows from my premise that there are other
means to secure them than govermental or even social control.
I would really like to see a smart contract work without backing of police, laws, and courts. (Note that contracts are like fire extinguishers: they are useful only when things fail to happen the way they were supposed to happen.)
Crowdfunding is an example that comes to mind - you transfer an amount
of value to a recipient, and the contract stipulates that if you don't get something
by some date, you'll get your amount back just as everyone else who contributed.
Such a contract is
easily implemented algorithmically with just a few lines of code,
and everyone can instantly see that it works.
So which one are we likely to trust - impartial mathematics or some guy with a rubber stamp?