A $5.09M BTC buy order was fully filled on OKX at $83,900. The order took just 1 minute and 18 seconds to execute, with the largest single fill reaching approximately $2.01M. But BTC has since slipped back to around $83,570—roughly 0.4% below the whale-sized entry. Large buy confirmed. Immediate follow-through still missing. $83,900 now becomes the level to watch: Can BTC reclaim it and turn the order into support, or is this buyer about to face more pressure? Data tracked by AiCoin. Not financial advice. #Bitcoin #BTC #OrderFlow