Assertion Supported AI assessment confidence: 95% certainty 4/5 debate potential 1/5

Jentzsch: DAO Attacker Took $50M But Left A 4-Week Resolution Window

Christoph Jentzsch · 781: Crypto: What AirBnB Looks Like In Digital Currency World · Sep 13, 2017 · at 14:14

Christoph Jentzsch, co-founder of Slock.it, explains the parameters and timeline of the 2016 DAO hack on Ethereum.

0:00 / 0:11exact quote · 11.1s

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“So we could just look and see how we did take fifty million dollars into a sub-account. But there was a rule in the smart contract which gave us about four to five weeks time to solve the problem.”

quote is from the automated transcript, cleaned for reading: filler sounds and stutters are removed, nothing is rephrased. names can be misheard (the analysis reads context, assessments check outside sources). how →

The claim, plainly

The DAO smart contract attacker transferred $50 million into a sub-account, while a built-in rule in the smart contract provided a four to five week window to resolve the issue.

a quote alone can be ambiguous, so this restates it with the references and context of the conversation around it resolved. AI-written; the tape below the player is the source.

Assessment

Historical blockchain records and smart contract code confirm both assertions in Christoph Jentzsch's claim. On June 17, 2016, an attacker exploited The DAO's splitDAO function to transfer approximately 3.6 million ETH (valued at roughly $50 million to $60 million at the time) into a child DAO ('sub-account'). Furthermore, The DAO's smart contract rules enforced a mandatory 27-day creation/grace period on new child DAOs, along with proposal debating periods (typically 14 days) to withdraw funds, creating a roughly 4-to-5-week window (minimum ~27-28 days up to ~6 weeks) that prevented the attacker from immediately extracting the funds and allowed the Ethereum community to execute the hard fork on July 20, 2016.

On June 17, 2016, approximately 3.6 million ETH (~$50 million at the time) was drained from The DAO into a child DAO contract (address 0x304a554a310c7e546dfe434669c62820b7d83490).
Smart contract rules in The DAO required a 27-day child DAO creation period followed by a standard proposal period (14 days) before ether could be transferred out, creating a lock window of approximately 4 to 5 weeks.
Vitalik Buterin's June 17, 2016 Ethereum Foundation notice confirmed the attacker could not withdraw funds for at least ~27 days, providing the window necessary to implement the hard fork.

Checked against

[1] ethereum.org [2] theblock.co [3] businessinsider.com [4] fastcompany.com [5] wikipedia.org [6] medium.com [7] medium.com [8] theblock.co

The DAO smart contract splitDAO 27 days Dark DAO waiting period 2016 Ethereum DAO attack child DAO 27 days split grace period The DAO hack 3.6 million ETH 50 million child DAO split 27 days 28 days The DAO attacker child DAO 3.6 million ETH withdrawal 27 days

assessed as of 2026-09-02

This assessment is an AI reading of a public statement, made against the cited references with the confidence shown. It can be wrong. The quote, the tape and the references are all on this page; if something is off, use report an error below. full disclaimer →

Mentioned

The DAO smart contracts

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Jentzsch: DAO Attacker Took $50M But Left A 4-Week Resolution Window

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