Bitcoin whale address bc1q9 deposited 438.37 BTC worth approximately $35.38 million to Coinbase Prime overnight, signaling a potential liquidation move amid BTC trading at $80,807. The deposit comes 16 months after the same wallet withdrew 615.4 BTC from Coinbase Prime Custody at an average acquisition price of $105,271. At current prices, the whale is sitting on losses exceeding $15 million across the position. Despite the drawdown, the address still holds $14.31 million in remaining BTC. The transfer to an exchange custody account often precedes selling activity, adding pressure to an already bearish market environment for Bitcoin.