TL;DR
- Poloniex delists DAO tokens in September 2016, marking the definitive end of The DAO experiment
- The DAO raised over $150 million in ETH before a June hack drained 3.6 million ETH worth approximately $50 million
- Ethereum hard fork on July 20 split the blockchain into ETH and Ethereum Classic (ETC)
- ETC surged 21.69% in a single day on September 1, trading at $1.44
- Ethereum traded at $11.99, up 3.15% in 24 hours as the network stabilized post-fork
The cryptocurrency landscape on September 1, 2016, was defined by the turbulent aftermath of one of the most consequential events in blockchain history: the rise and fall of The DAO. Just months after launching as the largest crowdfunding campaign ever seen in the crypto space, The DAO had become a cautionary tale — and its final chapter was being written as major exchanges moved to delist its tokens.
The DAO: From Record-Breaking Crowdsale to Cautionary Tale
The DAO launched on April 30, 2016, with ambitions that captured the imagination of the entire Ethereum community. Conceived as a decentralized autonomous organization functioning as an investor-directed venture capital fund, it was coded primarily by Christoph Jentzsch and deployed as an open-source smart contract on the Ethereum blockchain. The concept was revolutionary: no board of directors, no management structure, no employees — just code governing investment decisions made collectively by token holders.
The crowdsale exceeded every expectation. By May 10, 2016, The DAO had raised over $34 million. By May 15, it surpassed $100 million. At its peak, the fund held 11.5 million ETH — nearly 14% of all Ether tokens issued to that point — valued at more than $150 million from over 11,000 investors. The largest single investor held less than 4% of all DAO tokens, with the top 100 holders controlling just over 46%, suggesting a relatively decentralized ownership structure.
The Exploit That Shook Ethereum
Security concerns had been raised even before the crowdsale concluded. In May 2016, researchers published papers identifying vulnerabilities in The DAO’s code, particularly around recursive call issues. Ethereum developer Peter Vessenes blogged about the flaw on June 9, and by June 14, fixes had been proposed but were awaiting approval from DAO members.
On June 17, 2016, an attacker exploited a combination of vulnerabilities — including the recursive call flaw — to drain 3.6 million ETH from The DAO, approximately one-third of its total holdings, valued at around $50 million at the time. The stolen funds were moved to an account subject to a 28-day holding period under the smart contract’s terms, meaning they were not immediately irretrievable.
The Ethereum community erupted in debate. Some argued the attack was unethical but technically valid since it did not violate the coded rules of The DAO. Others called for the Ether to be reappropriated. DAO community manager Griff Green organized a volunteer group of coders known as The White Hat Group to protect the remaining funds in other wallets.
The Hard Fork That Split a Blockchain
On July 20, 2016, the Ethereum network executed a controversial hard fork to move the funds from The DAO to a recovery address where original token holders could exchange them back for ETH. This decision was not universally supported. A segment of the community believed that blockchain immutability should be absolute — that the code, once deployed, should be law regardless of the consequences.
Those who held this philosophical position continued to mine and use the original, unforked Ethereum blockchain, which became known as Ethereum Classic (ETC). The result was two separate blockchains, each with its own cryptocurrency, each claiming to represent different values in the cryptocurrency space.
September 2016: The Final Curtain
By September 2016, The DAO was effectively defunct. Poloniex, one of the largest cryptocurrency exchanges at the time, delisted DAO trading pairs, with Kraken following suit in December. The delisting marked the definitive end of The DAO as a tradable asset and closed one of the most dramatic chapters in cryptocurrency history.
Yet the market was showing signs of resilience. On September 1, 2016, Ethereum Classic was trading at $1.44 with a remarkable 21.69% gain in just 24 hours, reflecting growing interest in the unforked chain. Ethereum itself was priced at $11.99, up 3.15% on the day, suggesting the broader network was finding its footing after the turbulence of the summer.
Bitcoin, the market leader, was trading at $572.30 with a total market capitalization of approximately $9.07 billion. The total cryptocurrency market remained modest by later standards — the top 10 coins by market cap included names like Steem, Monero, Dash, NEM, and MaidSafeCoin, many of which would eventually fade from prominence.
Why This Matters
The DAO’s collapse and the subsequent hard fork established fundamental precedents that continue to shape cryptocurrency governance today. The event forced the industry to confront difficult questions: Should blockchains be immutable at all costs? Can smart contract code serve as a complete legal framework? Who has the authority to decide when a blockchain should be changed?
The split between ETH and ETC also demonstrated that community consensus, not just code, ultimately governs blockchain networks. The Ethereum community’s decision to fork set a precedent for how decentralized networks respond to crisis — one that would be referenced in numerous subsequent debates about governance, immutability, and the social layer of blockchain technology.
For the emerging decentralized finance (DeFi) ecosystem, The DAO served as both an inspiration and a warning. It proved that massive amounts of capital could be mobilized through smart contracts, but it also demonstrated the catastrophic consequences of insufficient code auditing and the challenges of governing decentralized organizations through code alone. The lessons learned from The DAO would inform the design of every major DeFi protocol that followed.
Disclaimer: This article is for informational purposes only and does not constitute financial advice. Cryptocurrency investments carry significant risk. Always conduct your own research before making investment decisions.