Bitcoin just pulled back below some critical support levels, and for a moment there it actually erased all of its gains for the year. What triggered this? Nearly half a billion dollars—$490 million to be exact—flowed out of US Bitcoin ETFs. That's real capital leaving the market, and traders are now watching closely as the price approaches another test. The key zone everyone's eyeing right now sits between $80,000 and $84,000. If Bitcoin holds somewhere in that range, it could bounce back. But if it breaks below? That's when things could get interesting for the downside.