An early participant in the Ethereum ICO has resurfaced after four years, depositing 800 ETH, valued at approximately $2.96 million, to the Kraken exchange. Initially, the participant acquired 8,950 ETH for $2,783 during the ICO. Despite the recent deposit, they still retain 1,780 ETH, contributing to a total profit of $13.36 million, reflecting a remarkable 4,803% return on their initial investment.