Ethereum Classic is a decentralized platform that runs smart contracts.
What are smart contracts?
These are applications that execute commands as per the program with no possibility of aborting or being censored or interfered with in any way.
In short, smart contracts are simply faultless applications.
The Ethereum Classic platform is decentralized, which means, there is no human authority in charge of it, and as a consequence, human weaknesses like corruption, non-accountability, and inefficiency, are forestalled. The system runs impartially and perfectly.
Smart contracts have the quality of being immutable, which means, you cannot alter an entry.
Ethereum Classic is doing a damn good job following in the steps of Ethereum Blockchain. So far as I can tell, both are unstoppable.