Ethereum Classic Timeline: The Events that Created and Defined ETC

Stevan Lohja
4 min readNov 30, 2018

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Ethereum Launches
JULY 30 2015
Vitalik Buterin and The Ethereum Foundation create the first blockchain-based turing-complete smart contract platform

Slock.it Creates TheDAO
APRIL 5 2016
Slock.it construct TheDAO Ethereum Contract; a security audit is completed by Dejavu

TheDAO Crowdsale Begins
APRIL 30 2016
TheDAO smart contract is deployed; members of the public send it value in return for DAO tokens

Security Proposal
MAY 26 2016
Slock.it announce a $1.5 Million USD proposal, paid in Ether by the crowdfund, ‘to guarantee the integrity of The DAO’

Moratorium Called
MAY 27 2016
On the last day of the crowdsale, DAO curator Vlad Zamfir calls for a moratorium on TheDAO, citing many game-theoretical security issues

TheDAO Crowdsale Ends
MAY 27 2016
The crowdsale completes to become the world’s largest and raising an incredible $150 Million USD

Recursive Call Bug Discovered
JUN 9 2016
Peter Vessenes publicly discloses the existence of a critical security vulnerability overlooked in many Solidiy contracts

‘No Funds at Risk’
JUN 12 2016
Stephan Tual publicly claims that TheDAO funds are safe despite the newly-discovered critical security flaw

TheDAO is Hacked
JUN 17 2016
Ether is slowly and silently drained from TheDAO as the re-entry bug is applied

Panic Hits the Markets
JUN 17 2016
The price of Ether is slashed in half as Griff Green announces that TheDAO has been hacked

The Countdown Beings
JUN 17 2016
TheDAO’s splitting mechanism gives around a month for a solution to be found that recovers the funds; Foundation and community developers race to implement a soft fork

Robin Hood Group Announced
JUN 21 2016
A group of ‘white-hat’ hackers secure 70% of TheDAO funds but protocol-level action is required to save the remaining 30% split by the hacker

DAO Wars: Soft Fork Vote
JUN 24 2016
The Ethereum Foundation releases a ‘Soft Fork’ client to censor transactions coming from the hacker; mining pools vote to enable it by lowering gas limit

Soft Fork Vulnerability
JUN 28 2016
Critical Denial of Service flaws are found in the Soft Fork implementation, miners quickly decide not to use it

Hard Fork Debate
JUN 28 — JUL 15
Many days of intense arguing goes on in the Ethereum community about the pros and cons of implementing a Hard Fork

Hard Fork Spec Announced
JUL 15 2016
The only remaining option is a controversial Hard Fork. A Specification is determined and announced by Slock.it and Ethereum Foundation members

Last Minute Carbonvote
JUL 15 2016
With 12 hours notice, The Ethereum Foundation use a controversial third party ‘coin vote’ to determine that the Hard Fork should be turned on by default; consensus is declared and an updated client is released

DAO Bailout Hard Fork
JUL 20 2016
With around 80% of nodes updating to the new client, the community nervously await the arrival of the Hard Fork activation block 1920000

‘Mission Accomplished!’
BLOCK 1920000
The community lets out a sigh of relief as the Hard Fork code is succesfully implemented with no obvious flaws; champagne corks are popped all over the globe

Ethereum Classic is Born
BLOCK 1920001
With predictions of the original non-forked chain to disappear within hours, many are surprised to find that miners continue mining blocks and OTC trading of the original chain tokens gives them value

Poloniex Lists ETC
JUL 23 2016
The largest Ethereum exchange lists ‘ETC’ — Ethereum Classic; many exchanges quickly follow suit, ETC price peaks to 1/3 of ETH’s

Community in Disarray
JUL 23 ONWARDS
Flame wars begin in the once peaceful /r/Ethereum and /r/ethtrader subreddits and economically-charged vitriolic spats begin to take hold of the community as it comes to terms with the split

Ethereum Classic Community
JUL 24 2016
The Ethereum Classic community begins to branch off from the forked-chain subreddits and form its own communication channels, including /r/EthereumClassic, Slack and Telegram

RHG Strikes Back
AUG 10 2016
The Robin Hood Group attempts to dump a large quantity of stolen ETC on the market. Poloniex freezes the funds. Uncertainty reaches an all time high.

Classic Declares Independence
BLOCK 2050000
A Declaration of Independence on the ETC website is published stating ETC no longer wants to be in association with the Foundation. The document, signed by the community, highlights the Ethereum values, which they believed were violated as well as how they plan to move forward.

Classic Rebuilds
AUG 15 2016
The Ethereum Classic community begins to rally behind a stabilizing ETC price by rebuilding on the Classic network; this website is created, groups are formed, new ideas begin to surface

DAO ETC unlocked
AUG 31 2016
Millions of previously locked or frozen ETC become available to DAO token holders and DAO attacker. Despite predictions of doom and gloom, ETC price holds remarkably well in face of huge dumps

Attacks and Upgrades
OCT 25 2016
Both Ethereums are hit with non-stop network attacks; ETC devs quickly ensure smooth and uncontentious network upgrade to patch exploited vulnerabilities

ETC Monetary Policy
NOV 1 2016
Classic community starts debating ETC monetary policy and emission schedule, as a way to align interests of platform users, miners, investors and developers

Grothendieck team
DEC 11 2016
A team of 7 full-time developers, committed by IOHK, starts working for Ethereum Classic

ETC Diehard Upgrade
BLOCK 3000000
ETC goes through a non-contentious network upgrade, resolving critical issues such as difficulty bomb and replay attacks

ETCDEV Team Announcement
FEB 20 2017
A team of long-term ETC contributors and volunteers rebrands as a ETCDEV team

Monetary Policy Adopted
MARCH 1 2017
Ethereum Classic community adopts a fixed-cap monetary policy with a Bitcoin-like limited emission schedule

ETC Investment Fund
MARCH 1 2017
Grayscale circulates investment thesis for ‘Ethereum (ETC) Investment Trust’, first non-bitcoin crypto fund targeted at traditional investors

To Be Continued

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