Ethereum Classic is an open-sourced blockchain-based platform that features a Turing-complete programming language and enables smart-contracts. Ethereum Classic is the original Ethereum blockchain, it came into existence in 2016 after the hard fork that took place following The DAO collapse.
The core principles presented in Ethereum’s whitepaper revolved around concepts such as the immutability of the Blockchain and that code is law, which many people believe were thrown out the window when they decided to hard fork to fix the damage after someone exploited The DAO vulnerabilities. Ethereum Classic is supported by people who denied this hard fork and kept running the original unchanged code.
As a result, Ethereum Classic is seen as the only decentralized smart contract platform where Code is Law, and that champions being immutable. It also does not have a centralized figure or company behind it, Ethereum Classic is developed by numerous teams such as IOHK, ETC Labs and ETC Cooperative.