BTC is by far the largest cryptocurrency and the oldest currency, which has more than 52.1 percent of the total market cap for the cryptocurrency.
source https://www.google.com/url?rct=j&sa=t&url=https://coinnounce.com/what-cryptocurrency-to-invest-in-2019/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNFPYalgXbrKdv8IBvytqpqijR9W7w
