The Winklevoss twins attempted to launch an ETF using cryptocurrency exchanges to calculate the base price of the asset and the three companies ...
source https://www.google.com/url?rct=j&sa=t&url=https://www.ccn.com/could-japans-approval-of-the-bitcoin-etf-affect-us-secs-decision/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNHr384_mouHiA0qiiEivCFc6FjMyg
