Anyone who doesn't know the cryptocurrency market might assume, casually reading the bitcoin prices in their morning paper, that the past seven days have been good for investors. BTC is up 18% in the week and is now hovering around the $ 7,400 mark. With any calculation, that's good. But the recent show of the strength of bitcoin belies the turmoil in the crypto market. Many altcoins don't just fall in BTC terms: they experience a slow death with 1,000 red axes.