According to on-chain tracking by Onchain Lens, a long-dormant Ethereum whale address deposited 9,000 ETH to the popular exchange Bitfinex after holding the assets for exactly five years. At the time of the transfer, the Ether was worth approximately $17.86 million, whereas the initial acquisition cost was just $4.63 million, netting the whale a profit of $14.37 million.
Looking back, five years ago the whale withdrew 10,000 ETH from an undisclosed DeFi protocol when Ether traded at around $463 per token, giving the position a total cost basis of $4.63 million. Following that withdrawal, the address remained completely inactive on-chain until this sudden large transfer to a centralized exchange. Bitfinex, one of the oldest cryptocurrency exchanges, often sees such large inflows from dormant addresses trigger speculation about imminent sell pressure.
Notably, apart from the 9,000 ETH, the same address also held an additional 1,000 ETH, which were handled in a more obfuscated manner. On-chain data shows that this 1,000 ETH (then valued at $1.147 million) was first sent to the privacy protocol TornadoCash for mixing, then sold through a series of transactions, and the proceeds were eventually deposited into another exchange, Kraken. TornadoCash is a non-custodial mixer built on Ethereum, allowing users to deposit ETH or other tokens and blend them with deposits from others to obscure the transaction trail.
This behavior pattern suggests that even after attempting to avoid public tracing via a mixer, the whale still opted to settle the majority of the assets on centralized trading platforms. Onchain Lens's monitoring tools successfully captured the full flow of funds by analyzing address correlations.