Actually every day we can know through trading. When the Bitcoin price rises and falls, many altcoins also follow the Bitcoin price. But if the price of Bitcoin dropped strongly, its impact on alternative coin prices also suffered a heavy decline. Coins like Ethereum are also down, while the largest XRP coin number four, which is used in the Ripple US payment system, is also down. And of course, if Bitcoin correction will have an impact on all altcoins.