$BTC broke under $81k, $ETH slipped below $2,400. $100 billion evaporated from crypto markets in a single day. The velocity of this selloff is notable — not just the size. When major support levels crack this fast, it usually means leveraged positions got liquidated in waves. Watch how quickly (or slowly) buyers step back in around these levels. That'll tell you whether this is panic selling or the start of something deeper.