An Ethereum ICO participant, identified by the address "0x61b9", has transferred 334.7 ETH, valued at $1.48 million, after more than ten years of inactivity. The participant initially invested $104 in the Ethereum ICO, receiving 334.7 ETH, which has now appreciated to a 14,269x return. This significant movement highlights the long-term value growth of early Ethereum investments.