Ethereum Classic

Beginner
Жаңыртылган Sep 14, 2026

What Is Ethereum Classic?

Ethereum Classic is a decentralized blockchain platform that runs smart contracts and preserves the original Ethereum chain following a 2016 hard fork.
The origins of Ethereum Classic trace back to a major security breach involving The DAO, a decentralized autonomous organization built on Ethereum. In 2016, an attacker exploited a vulnerability in The DAO's smart contract code and siphoned approximately $60 million worth of ETH. 

The majority of the Ethereum community voted to reverse the hack through a hard fork, which altered the blockchain to refund affected users.

However, a segment of the community opposed this intervention, arguing that it violated the foundational principle of blockchain immutability. They believed that transactions, once recorded, should not be reversed under any circumstances. This group continued on the original, unaltered chain, which became known as Ethereum Classic (ETC).

How Does Ethereum Classic Work?

Ethereum Classic operates on a proof-of-work consensus mechanism, relying on miners to validate transactions and secure the network. This contrasts with Ethereum, which transitioned to proof-of-stake in September 2022 as part of an upgrade known as The Merge.
Like Ethereum, Ethereum Classic supports smart contracts and decentralized applications (DApps). Developers can build and deploy programs on the ETC blockchain using the same programming tools and languages. However, Ethereum Classic follows its own separate upgrade roadmap rather than adopting Ethereum's ongoing changes.
Currently, the network has a circulating supply of approximately 158 million ETC and a market capitalization of around $1.2 billion.

Ethereum Classic vs. Ethereum

The two platforms have significant philosophical and technical differences. Ethereum Classic adheres to the "Code is Law" principle, which holds that blockchain transactions are final and should not be modified, even in cases of theft or fraud. Ethereum, by contrast, opted for a more flexible approach by reversing the DAO hack through a hard fork.

Technically, the two networks have diverged significantly. Ethereum has adopted proof-of-stake, reducing its energy consumption and changing its economic model. Ethereum Classic remains committed to proof-of-work, which its community views as the more battle-tested and decentralized consensus mechanism.

These differences have created distinct communities and development roadmaps, though both networks continue to operate independently.

Learn more: What Is Ethereum (ETH)?
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