$BTC is actually not a sell-off by Grayscale. According to the information, Fidelity, BlackRock, etc. and Grayscale are actually conducted through over-the-counter transactions, and there is no such thing as a sell-off. You can find out by looking at the transaction volume on coinbase. One day's transaction volume is almost the same as Grayscale's over-the-counter sales. How is this possible? You can also search what coinbase prime is. The drop is purely caused by everyone’s panic.