Bitcoin can be a form of currency existing only within the digital world. The technology was created by a person hiding under a presence named Satoshi Nakamoto. To this day, the creator/creators from the system never materialized, maintaining an anonymous status. http://bookmarketmaven.com/story8418251/كیف-تقوم-بتحمیل-تطبیق-لیدجر-لایف