This is called the "Simulation argument" and is seriously discussed in academic circles. It was introduced in a paper by philosopher Nick Bostrom of Oxford University.
There is little to assume to make this argument robust. Consciousness is at last the result of information processing. Then you have to grant that humans of the future build and run simulations of the past in the way we run simulations today (Sims games, etc), and then there is just one short move: the simulated universes almost by definition will outnumber real universes, and therefore we're far more likely to be among the simulated ancestors than the real ancestors.
Found in this video debate about consciousness and afterlife (sequence starting at 18m 20s):
http://www.youtube.com/watch?v=xbzd6ZbCowY&t=18m20s
Wikipedia: https://en.wikipedia.org/wiki/Simulation_argument
Bostrom's Paper: http://www.simulation-argument.com/simulation.html
So what does this mean for Bitcoin? It's an in-game currency for this simulated universe, will they trade with it in the next outer simulated universe? And the next? omg buy buy buy!
This is something like the Matrix, where we may be in an experiment, where Bitcoin is a creation within the matrix, it would be like a sub-world. If we see it from a point of view of universality, it may make sense, because we live in a world and we do not know all the worlds that exist in the universe, it would make sense, it is an enigma, but of course I, in my case, have always gone by the creationist theory of God the Heavenly Father.