New research is casting even more doubt on the legitimacy of bitcoin trading. An analysis published by Bitwise this week shows that 95 percent of bitcoin spot trading is faked by unregulated exchanges. The survey, first reported by The Wall Street Journal, echoes concerns by regulators that cryptocurrency markets are still ripe for manipulation. Bitwise, an asset manager in the process of trying to list the first-ever bitcoin exchange traded fund, said it met with the Securities and Exchange Commission on Tuesday to discuss its application. As a part of the process, it submitted analysis that could help regulators cut...