Understand why digital currencies matter and how best to advise clients. A $100 investment in Bitcoins in 2010 would be worth over $75 million today. What created this unfathomable explosion in value? Each day over 1,000,000 unique Bitcoin transactions are processed. Companies of all sizes now accept Bitcoins as payment. Auditors, tax preparers and advisors must understand the changes orchestrated by Bitcoins and their digital currency cousins.