Australian tech entrepreneur Craig Wright identified himself as the creator of controversial digital currency bitcoin on Monday but experts were divided over whether he really was the elusive person who has gone by the name of Satoshi Nakamoto until now. Uncovering Nakamoto’s real identity would solve a riddle dating back to the publication of the open source software behind the cryptocurrency in 2008, before its launch a year later. Bitcoin has since become the world’s most commonly used virtual currency, attracting the interest of banks, speculators, criminals and regulators. Worth a total of $7 billion at current levels, it fell…