Remember the good old days in cryptocurrency-land? Scores of passionate, earnest entrepreneurs with nothing more than an idea and a whitepaper could raise tens of millions of dollars on a promise. Today, not so much. Regulatory attention to cryptocurrency investments may have a chilling effect on these go-go launches. To be sure, it is not over yet: In 2017, crypto-enthusiasts saw their coins and tokens surge to a cumulative high of $750 billion in market value before the cur