PanoramaWho Wants to be a Bitcoin Millionaire?
It's supposed to be the future of money. Bitcoin is the world's leading virtual currency, but unlike real money, it is not backed by a government or properly regulated. Bitcoin is exchanged and held digitally by users, which is attractive to criminals selling drugs, pornography and arms, but now Bitcoin is moving into the mainstream and being openly marketed as an investment opportunity. A look at what Bitcoin is and what it means, and inside a Bitcoin `mine' in Iceland.