Through the years, the U.S. Securities and Exchange Commission has dealt with proposals for exchange-traded funds (ETF) offering more exposure to Bitcoin (CRYPTO: BTC). The regulatory body rejected every application for a spot market Bitcoin ETF until now when it has started reviewing proposals. The first-ever U.S. Bitcoin ETF (spot Bitcoin ETF) was filed in 2013 by Cameron Winklevoss and Tyler Winklevoss. Read More: Court Backs Grayscale: SEC To Reassess Spot Bitcoin ETF Application After DC Circuit Ruling Crypto ETF expert, Volatility Shares Chief Investment Officer Stuart Barton, said all a…