Someone asked about Etherium Classic vs Etherium on the Stock thread so I figured I’d write the story out here and include some good links.
The story: a totally independent, decentralized fund was created. Everyone invested could vote on what they wanted to invest in.
(Imagine if on Pinside everyone here on this thread was able to place a vote for what stocks we bought as a collective.)
This unregulated, leaderless fund sounded like a great idea, except it had securities flaws right off the bat and was immediately hacked. The hacker was able to constantly spend those tokens to his OWN WALLET to the tune of 3.6 million ether. (50 million USD at the time, and $6.5 BILLION today.)
There was a huge debate in the community with what to do. There was a 28 day grace period before the funds actually transferred completely. But because nobody ran the fund it was impossible to revert the money back.
So after the devs tried and failed to use the exact same hack to SAVE the ether, the creator of Etherium himself suggested they do a hard fork. That means if enough people running the Etherium protocol agree to disregard the entire creator of the DAO on the blockchain, then it would be killed or forked away from that block.
The problem is some diehard supporters of blockchain and Etherium believe this is against the cardinal rule of the blockchain. Everything that happens should be permanent and unchangeable. They argue whatever happens positive or negative is the true nature of the blockchain and changing it is unethical.
The group who believe “Code Is Law” and that blockchain should remain unchanged are who runs Etherium Classic now.
The 89% of people who wanted to “erase” the hack agreed to the hard fork and since they were the majority the hard fork kept the Etherium name.
Etherium Classic is the original, unaltered version where $6 billion USD of Ether is sitting in a hackers wallet, ready to be spent. They did convert 100k Ether into bitcoin but never touched the other 3.5m
Obviously Etherium is better as it has had many updates (also called forks) that have made it better and better.
They are called forks because obviously 2 identical splits are made. They share the entire history of blockchain up until the fork.
Some good reads:
https://www.crypto-news-flash.com/what-is-ethereum-classic-etc-dao-hack-comparison-with-eth-roadmap/
https://www.tokenmeister.com/blog/blockchain/the-dao-hack-the-story-of-the-strangest-digital-attack/