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What Is Ethereum Classic?

Ethereum Classic (ETC) is the original Ethereum blockchain that continued operating after the controversial 2016 hard fork. The story begins with the DAO (Decentralized Autonomous Organization), a decentralized venture fund built as a smart contract on Ethereum. Within 28 days of its launch, the DAO raised over $150 million worth of ether -- approximately 14% of all ether tokens in existence at the time. On June 17, 2016, an attacker exploited a recursive function vulnerability in the DAO's "Split Function," which was designed to let investors exit and reclaim their ether. The exploit allowed the attacker to repeatedly withdraw ether before the contract could update its internal balance, draining approximately $50 million into a "Child DAO." However, the DAO's smart contract included a 28-day holding period on withdrawn funds, giving the community time to respond.

The ether price dropped from $20 to $13 as confidence was shaken. The Ethereum community debated three options: do nothing, implement a soft fork to freeze the stolen funds, or perform a hard fork to reverse the theft entirely. The soft fork approach was abandoned after developers discovered it would create a denial-of-service vulnerability -- attackers could flood the network with transactions that interacted with the DAO contract, forcing miners to perform complex computations for near-zero gas cost. The community ultimately voted for a hard fork, which the majority of the network adopted. Those who disagreed with this intervention on the principle of blockchain immutability continued the original, unforked chain as Ethereum Classic.

Ethereum Classic's core philosophy centers on "Code is Law" -- the principle that blockchain transactions should be final and irreversible, regardless of their outcome. Proponents argue that if a blockchain's history can be rewritten whenever the community decides a transaction had an undesirable outcome, the trustless nature of the technology is fundamentally compromised. As Gavin Wood, co-founder of Ethereum, noted at the time, blaming Ethereum for the DAO hack was like saying "the Internet is broken" every time a website goes down. This philosophical commitment to immutability attracted supporters including Barry Silbert, CEO of Grayscale, and remains the primary distinction between ETC and ETH.

Technically, ETC runs the Ethereum Virtual Machine (EVM) and supports Solidity smart contracts, making it largely compatible with Ethereum tooling and development workflows. Smart contracts -- a concept first proposed by Nick Szabo in 1994 -- function identically on both chains at the bytecode level. However, when Ethereum transitioned to Proof of Stake with The Merge in September 2022, Ethereum Classic remained on Proof of Work, making it one of the largest PoW smart contract platforms still in operation. After The Merge, many former Ethereum GPU miners redirected their hash power to Ethereum Classic, significantly increasing its network security. ETC also uses a modified monetary policy with a fixed supply cap of approximately 210.7 million ETC, contrasting with Ethereum's uncapped and now deflationary supply model.

The Ethereum Classic network has experienced multiple 51% attacks, most notably in January 2019 and again in August 2020, which highlighted the security challenges of being a minority Proof of Work chain. In response, the community implemented the MESS (Modified Exponential Subjective Scoring) protocol, which makes deep chain reorganizations exponentially more difficult and expensive to execute, significantly raising the cost of future 51% attacks.

Getting Started With Ethereum Classic

  1. Step 1: Choose a wallet that supports ETC. MetaMask can be configured for Ethereum Classic by adding it as a custom network (Chain ID 61, RPC endpoint from the ETC community).
  2. Step 2: Purchase ETC from a major cryptocurrency exchange. Be careful not to confuse ETC (Ethereum Classic) with ETH (Ethereum) when selecting your trading pair.
  3. Step 3: Transfer ETC to your personal wallet. Ensure you are sending to an ETC address on the correct network, as sending to an Ethereum address will result in lost funds.
  4. Step 4: Use ETC for transactions, interact with smart contracts deployed on Ethereum Classic, or participate in mining to support the Proof of Work network.

How to Get an Ethereum Classic Wallet?

MetaMask

MetaMask can be configured to connect to the Ethereum Classic network by adding it as a custom network. This allows you to manage ETC alongside your Ethereum assets using a familiar interface.

Trust Wallet

Trust Wallet supports Ethereum Classic natively, providing a simple mobile interface for managing ETC. Available for iOS and Android.

Hardware Wallets

Ledger and Trezor hardware wallets both support ETC. Ledger Live includes native ETC support, and Trezor manages ETC through its web interface.

Ethereum Classic Resources

How to Buy Ethereum Classic?

ETC is available on most major exchanges:

Centralized Exchanges

ETC can be purchased on Coinbase, Kraken, Binance, and other exchanges. Most offer ETC/USD and ETC/BTC pairs. Be careful not to confuse ETC (Ethereum Classic) with ETH (Ethereum) when trading.

Mining

As a Proof of Work blockchain, ETC can also be obtained through mining. After Ethereum's move to Proof of Stake, some former Ethereum miners redirected their hash power to Ethereum Classic.

Latest Ethereum Classic News

Ethereum Classic has positioned itself as the leading Proof of Work smart contract platform following Ethereum's transition to Proof of Stake in September 2022. The network saw a notable increase in hash rate as displaced GPU miners sought a new chain, reinforcing ETC's security model. Development continues to focus on maintaining the core protocol, improving network defenses against reorganization attacks, and preserving the chain's foundational immutability principles. The ETC community maintains that the network's value proposition -- censorship-resistant smart contracts on an immutable, Proof of Work blockchain with a fixed monetary supply -- becomes more relevant as the broader industry moves toward Proof of Stake consensus.