On January 12, 2009, one of the most important milestones in the history of the Bitcoin: the first bitcoin transaction between Satoshi Nakamoto y Hal Finney. In this first transaction, which meant the beginning of the Bitcoin exchange, Nakamoto sent the entire 10 BTC to Finney. With this, it was clear that Bitcoin was a cryptocurrency with usable technology that would open the door to an unprecedented technological and economic revolution.