Ethereum Classic (ETC)
The original, unmodified Ethereum blockchain that continued unchanged following the 2016 DAO hack , upholding blockchain immutability as a core principle, running proof-of-work consensus, and supporting smart contracts.
- Ticker: ETC
- Origin: Original Ethereum chain (post-DAO fork, 2016)
- Consensus: Proof of Work (Ethash/ETCHASH)
- Principle: Immutability , code is law
What is Ethereum Classic?
The continuation of the original Ethereum blockchain following the 2016 DAO hack, maintaining the principle that blockchain records should remain immutable , providing a proof-of-work smart contract platform committed to censorship resistance and decentralization.
Bitcoin is the first decentralized cryptocurrency, created in 2009 by an individual or group using the pseudonym Satoshi Nakamoto. It operates as a peer-to-peer electronic payment system that enables direct transactions between users without intermediaries such as banks or payment processors.
Bitcoin transactions are secured using the SHA-256 cryptographic algorithm and recorded on a distributed public ledger called a blockchain, maintained across thousands of computers worldwide. New blocks are added approximately every 10 minutes.
The Original Ethereum Blockchain
Ethereum Classic is the original Ethereum blockchain that continued unchanged following the controversial 2016 DAO hack, when the majority of the Ethereum community implemented a hard fork to recover hacked funds. ETC represents the chain that rejected this intervention.
Immutability , Code Is Law
The defining principle of Ethereum Classic is that blockchain records should be immutable. The ETC community rejected the 2016 hard fork on the grounds that reversing transactions , even those resulting from a hack , violates the foundational commitment to immutable, censorship-resistant ledgers.
Proof of Work Consensus
Ethereum Classic runs a proof-of-work consensus mechanism, which the chain retained when the broader Ethereum network transitioned to proof of stake in 2022. ETC positions its continued use of PoW as consistent with its commitment to decentralized, permissionless security.
Smart Contract Support
Ethereum Classic supports the same smart contract functionality as Ethereum, enabling developers to deploy decentralized applications on the ETC chain. Applications built for the Ethereum Virtual Machine (EVM) are compatible with Ethereum Classic's execution environment.
Censorship Resistance
Ethereum Classic positions itself as a censorship-resistant computing platform , a network where no authority, including developers, can modify transaction history or reverse confirmed transactions, regardless of external pressure or value at stake.
EVM-Compatible Decentralized Platform
As an EVM-compatible chain, Ethereum Classic can run smart contracts designed for Ethereum's execution environment, giving it access to existing developer tooling and contract code while maintaining its distinct consensus model and immutability commitment.
Philosophy & Ecosystem
Ethereum Classic maintains a dedicated developer and miner community committed to proof-of-work consensus and the principle of blockchain immutability, operating independently of the broader Ethereum ecosystem.
2016 DAO Hack & Chain Split
The 2016 DAO hack exploited a smart contract vulnerability to drain approximately $60 million in ETH. When the Ethereum community voted to hard fork and reverse the hack, a minority continued the original chain , which became Ethereum Classic , arguing that the fork itself was a greater threat to blockchain integrity than the hack.
Independent Miner & Developer Community
Ethereum Classic maintains an independent community of miners and developers who continue to secure and build on the chain, distinct from the Ethereum ecosystem. The network's proof-of-work model provides ongoing mining incentives for those committed to the original consensus model.
EVM Compatibility & Tooling
EVM compatibility allows developers to use Ethereum-standard tools, libraries, and frameworks when building on Ethereum Classic, reducing the development overhead of targeting the ETC chain while accessing its distinct security model and philosophical positioning.
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