According to LongHash news, by analyzing the correlation between the privacy coins Monero, Zcash and Dash between Coin Metrics and Bitcoin price, it is found that the prices of Monero and Dash are closely related to the price of Bitcoin, with correlations of 0.86 and 0.78, respectively. Zcash's price is also related to Bitcoin price, although not so closely. However, it is worth noting that these three tokens were highly correlated with Bitcoin in 2017 and 2018, but so far in 2019, Zcash and Dash have only shown a weak correlation with Bitcoin. However, in the second half of 2019 (July 1 to December 9), the correlation between these three tokens and Bitcoin has once again strengthened. This means that, for now, privacy coins are basically in sync with Bitcoin.