A developer has recovered $2 million in ETH from a 2016 ICO, freeing funds that were locked due to a smart contract bug.
Summary
- A whitehat developer has retrieved $2 million in ETH that was locked since the 2016 ICO of HongCoin.
- The developer's solution allowed the HongCoin team to issue refunds that were previously blocked due to a smart contract bug.
- Such recoveries are uncommon but may reveal hidden value within the crypto ecosystem.
An Ethereum developer, known as 0xFlorent_, successfully recovered over 1,000 ETH, valued at around $2 million, from a smart contract associated with the HongCoin ICO dating back to 2016. These funds had been inaccessible for nearly nine years due to a bug in the contract.
In a recent tweet, 0xFlorent_ shared details about the retrieval process, stating that the HongCoin ICO was designed to enable refunds for investors after the project failed to achieve its funding goals. However, a flaw in the contract prevented these refunds from being processed, leaving the ETH locked away.
First white-hat exploit on Ethereum: I unlocked 1,003.62
Ξ ($2,000,000) trapped in a 2016 ICO smart contract
for 9 years.
The 48 original investors can now claim their funds. pic.twitter.com/lyh5iyaDu7
— 0xflorent.eth (@0xFlorent_) May 31, 2026
Initially popular for funding crypto projects, ICOs allowed investors to trade ETH for tokens tied to developing projects. The recovery involved correcting an error in the contract that misidentified which investors were eligible for refunds. This led to the HongCoin team executing 41 transactions to unlock the funds for 48 investors, as verified by Etherscan records.
Whitehat developers like 0xFlorent_ focus on identifying and fixing vulnerabilities to recover funds rather than exploiting them. This recovery comes amid a rise in attacks on the decentralized finance sector, which has experienced losses exceeding $840 million in the first five months of 2026 alone.
Uncommon Recovery
Funds can remain frozen in smart contracts long after projects have failed, but the HongCoin recovery illustrates that some assets may still be retrievable if the right conditions are met. However, such recoveries are rare and do not guarantee that large amounts of lost funds can be retrieved easily, as noted by Andy Yajin Zhou, an associate professor at the Chinese University of Hong Kong.
According to Zhou, the successful recovery was possible due to a specific vulnerability in the contract, but not all older contracts will have similar flaws. He pointed out that many funds remain inaccessible due to lost keys or unchangeable contract logic, making it difficult to estimate the total amount of ETH trapped in older contracts.
This case suggests that assets once considered lost might still be found, indicating that smart contracts may not always lead to dead ends. Enhanced security research and advancements in blockchain technology could help unlock more stranded assets, revealing previously dormant value while also exposing the limitations of earlier smart contract designs.
