Are there too many ? The number of the digital  has grown to 4.5k in Feb 21 up from from ~1.3k in 2017, ~▲ 240%.  ~MCAP $750bn ~▲ 335% y/y ~▲ 45 % YTD. ACF blog  https://t.co/89eDJcfkx0  @coinbase https://t.co/yz5WyTVTh8