Wu said that he learned that two addresses marked as "Copper: Hot Wallet" (1M5L5) and (0x1A3) deposited 1224.6 BTC and 59832.2 ETH to OKX 20 minutes and 15 minutes ago, respectively, worth $69.33 million and $143 million, with a total value of $212 million. Copper is a crypto custody company.