Sounds like a giant ponzi scheme, spend real money to buy something hyped up with no actual value or solid material backing. And it exists in the nether world of the .www and is heavily done by countries like China . Buyer beware .... and what happens to the worldwide market when this crashes. Someone is getting rich with real money off this right now.
Oh not so, you can buy bitcoins with fiat money (petro dollars), no need to use gold or silver.
