Bitcoins is the newest currency in town and even though no one can carry it in their wallets, you can sure keep in in your bank. It was actually in 2008, that Bitcoin was invented by a person by the pseudonym of Satoshi Nakamoto.
Everyday, over 200 thousand computers are working towards mining new bitcoins with about 3600 new Bitcoins being mined.
In the currency's earlier days, it is thought that over 100 million bitcoins were mined and unlike physical money, it is difficult to replicate or fake a bitcoin since each one has its own unique identity.