Okay, let's start with a proof that it really happened because I can't see it. If we look at today's price dynamics on coinmarketcap, it seems that Bitcoin did not have any changes above around 2% from today's maximum price. I also don't see a 7% drop yesterday even within the whole day, whereas you're talking about minutes. If it was a momentary thing, it can be hard to find it right now, though, so it would be nice if you specified the day the hour at least. But even if something like that happened, I don't think it's a reason to panic or something the reason to which can be found easily. It could be a big selling order, but what's important is that it did not affect the market much.