Let's say the year is 2034 (optimistic?) and the New New World has adopted Bitcoin as its currency, and now there's a civil war, and naturally the two sides want to have their own version of Bitcoin ... hence a fork.
A permanent fork as far as anyone can tell.
What happens to my bitcoins in such an event?
If originally I owned BTC 1,000, do I now own BTC 1,000 and BTC2 1,000 separately after the fork, or is it just BTC 1,000, or do I have to choose between the two chains (i.e. I get either BTC 1,000 or BTC2 1,000 but not both), or do I lose all my BTC unless I redeem them for either BTC1 or BTC2 ... or what?
I understand that forking Bitcoin into two or more currencies might reduce its value more than proportionately against real goods and services, which is to say that BTC2 10,000 might not buy you what you could have got for BTC 1,000 before the fork event, and we could get into the economics of that, but that's not my question. My question is specifically about the nominal and not the real, i.e. how many bitcoins I now own as opposed to what my bitcoins can now buy.