Introduction to Cryptocurrency
Before Paypal money people had two options to send money, by checks or interbank transfers. Checks were slow and interbank transfers were expensive.
The precursor to bitcoin was m pesa in Kenya, which came from a company called Safaricom. M pesa allowed people to send money over the phone so that they no longer needed to carry cash for transactions. Blockchain was invented in 2008 by bitcoin's enigmatic inventor Satoshi Nakamoto.
The primary purpose of this is to quantify - for example it can be used to count the number of firms, and the number of workers, creatively employed in any given location, and hence to identify places with particularly high concentrations of creative activities.