While Bitcoin futures ETFs are mushrooming after rain, and Grayscale plans to launch a spot Bitcoin ETF backed by real BTC, you can go back 8 years and remember a funny story. In 2013, when Bitcoin was trading at $ 84, Mad Magazine published 20 of the stupidest ideas of the year - the fifth place on this list was taken by the idea of launching the Bitcoin ETF by the Winklevoss brothers. Interestingly, now the authors of this list are very funny? #Cryptocurrency