These cryptocurrency charts for BTC, ETH, XRP, LTC, and ETC look very similar, nearly identical? Why? See how BTC, ETH, XRP, LTC, ETC match today. Especially for BTC and ETH in matching the same line on their charts.
I took these screenshots this morning on coinmarketcap at 9:45 a.m. Pacific time. These charts are in order from left to right: BTC, ETH, XRP, LTC, and ETC.