On July 23rd, according to blockchain data analysis company Arkham, an important Mt. Gox platform address—18vj—executed a large-scale Bitcoin transfer operation in the past 16 minutes. The address transferred 42,587 Bitcoins to another address starting with 15yp. This action drew significant market attention, as the total transaction value was estimated to be an astonishing $2.85 billion. This transaction highlights the complex transaction dynamics that could occur during the operational history of Mt. Gox, one of the most well-known cryptocurrency exchanges in history. It also serves as a reminder of the importance of digital currency security and risk management for market participants.