CNBC’s Bob Pisani spoke with Greg King, CEO of Osprey Funds, and Michael Sonnenshein, CEO of Grayscale Investments. They discussed the crypto conundrum – the hot topics covered at this weekend’s big bitcoin conference in Miami …what it will take to really lay the groundwork for a potential cryptocurrency ETF this year and whether bitcoin will remain the dominant player in the crypto space. In the ‘Markets 102’ portion of the podcast, Bob continues the conversation with Michael Sonnenshein from Grayscale Investments.