What is Ethereum Classic? Ethereum Classic, or ETC, is a public, permissionless Layer 1 blockchain that preserves the original Ethereum chain after the 2016 DAO-related hard fork. It uses the Ethereum Virtual Machine, proof-of-work consensus, smart contracts, and an immutability-focused “Code is Law” philosophy.
Core technology and blockchain architecture
Ethereum Classic uses an account-based architecture with externally owned accounts, contract accounts, gas fees, and deterministic on-chain execution. Its EVM compatibility allows developers to deploy Solidity-based smart contracts and adapt Ethereum tools, wallets, and applications, subject to differences in protocol support and ecosystem liquidity. The network uses chain ID 61 to distinguish its transactions from those on other EVM networks.
Mining uses the Etchash algorithm, introduced through the Thanos upgrade, also known as ECIP-1099. Etchash supports GPU and ASIC mining and was designed to slow the growth of the mining DAG file. ETC has adopted selected Ethereum protocol changes through upgrades including Atlantis, Agharta, Phoenix, Magneto, Mystique, and Spiral.
The chain originated in 2016 after the Ethereum community split over The DAO exploit. On 20 July 2016, the Ethereum-supported chain implemented a hard fork intended to reverse the exploit’s effects. The unmodified chain retained its transaction history and continued under the Ethereum Classic name, while the forked chain retained the Ethereum name and ETH ticker.
Primary uses and applications
ETC is used to pay transaction and smart-contract execution fees, compensate miners, transfer value, and support programmable applications. Its EVM environment can host decentralized exchanges, lending systems, games, digital collectibles, payment tools, token contracts, and other financial or non-financial applications.
The network also serves as infrastructure for miners, exchanges, custodians, wallets, block explorers, and developers seeking a proof-of-work smart-contract platform. Its application ecosystem is smaller than Ethereum’s, but it remains compatible with major Ethereum development practices. Community-listed applications include ETCMCv2, SaturnDEX, CryptoFlower, Live.loon Dapp, Classic Entropy, and GHOST Faucet.
Who is behind Ethereum Classic and where is it based?
Ethereum Classic does not have a single founder, chief executive, or company controlling the protocol. It emerged from the original Ethereum project in 2016 and is maintained by independent developers, miners, node operators, client teams, application developers, and community contributors.
Important contributors and organizations have included IOHK, now associated with IOG, which developed the Mantis client; ETC Labs, which supported Core-Geth and ecosystem initiatives; and ETC Cooperative. The cooperative was incorporated in Delaware on 7 September 2017 and states that it has held U.S. 501(c)(3) public charity status since 2018.
The legal entity behind the entire blockchain is not publicly established. ETC Cooperative is a U.S.-based supporting organization, not the confirmed owner or controller of the network. Contributors operate across multiple countries, and Ethereum Classic has no confirmed geographic headquarters or single country of operation.
Tokenomics and supply
ECIP-1017 defines the 5M20 monetary policy. Each emission era covers 5,000,000 blocks, after which the block reward declines by 20%. New ETC therefore continues to enter circulation through mining, but issuance falls at each era boundary. The theoretical maximum supply is 210,700,000 ETC.
CoinStats recorded a circulating supply of 158,336,723 ETC and a total supply of 158,337,231 ETC on 1 October 2026. Distribution comes primarily from mining rewards, transaction fees, and subsequent transfers through exchanges, custodians, wallets, and peer-to-peer markets. There was no separate corporate premine associated with a later foundation allocation.
Consensus and network security
Ethereum Classic uses Nakamoto-style proof of work. Miners compete to produce valid blocks, while nodes verify transactions, smart-contract execution, and consensus rules. Security depends on the cost of acquiring mining hardware and electricity and on the distribution of network hashpower.
The network experienced two 51% attacks in January 2019 and three more in August 2020. Such attacks can reorganize recent blocks and enable double spending, although they do not normally allow an attacker to create arbitrary coins or move funds without private keys. Measures including MESS, client hardening, and infrastructure changes have been used to reduce attack exposure.
Ecosystem integrations and competitive position
ETC benefits from compatibility with EVM infrastructure. Hyperledger Besu supports Ethereum Classic, while Core-Geth, Fukuii, and Besu have been involved in multi-client testing. Wallets, mining pools, exchanges, custodians, and block explorers provide additional infrastructure.
Its main differentiators are proof-of-work smart contracts, continuity with the pre-fork Ethereum ledger, a predictable emission schedule, and an independent upgrade process. The trade-offs include historical majority attacks, a smaller application ecosystem, lower liquidity than leading smart-contract networks, and dependence on miner economics.
Current development and roadmap
Development remains focused on security, execution-client maintenance, EVM compatibility, and coordinated network upgrades. Olympia is the principal current initiative. ECIPs 1111 through 1114 propose an EIP-1559-style fee market, an on-chain treasury, DAO governance, and a standardized funding process.
Unlike Ethereum, the Olympia design would redirect base fees to a protocol treasury rather than burn them, while leaving miner block rewards and priority-fee tips unaffected. As of the supplied 2026 material, Olympia remained in Mordor testnet and multi-client testing, with mainnet activation still pending.
CoinStats recorded ETC at $8.95, with a 24h change of -1.51%, a market cap of $1.42B (rank #83), and 24h volume of $92.21M. Its all-time high was $167.09, the current price is 94.64% below it.