Remember Bitcoin? Some investors might want to forget

This December closes out cryptocurrency's most exciting year, ending in a terrible, sober headache of a winter

Last year around this time, a toy called a cryptokitty sold for $170,000. A real estate agent remade himself as CoinDaddy, producing cryptocurrency-themed music videos. The man behind a company called Ripple became for a moment richer than Mark Zuckerberg. Kids barely out of high school were buying Lamborghinis because of a crypto meme. Experts went on CNBC to say Bitcoin was going to reach $100,000 per coin.
 
For a few sweet months of 2018, all of Silicon Valley was wrapped up in frenzied easy money and a fantasy of remaking the world order with cryptocurrencies and a related