Network Configuration
Connect to Ethereum Classic mainnet or the Mordor testnet. Full EVM compatibility — use your existing Ethereum tooling.
ETC MainnetChain 61
- Chain ID
- 61
- Currency
- ETC
- RPC
https://etc.rivet.link- Explorer
- Blockscout →
- Consensus
- Proof-of-Work
- EVM
- Shanghai-equivalent
Mordor TestnetChain 63
- Chain ID
- 63
- Currency
- METC
- RPC
https://rpc.mordor.etcnodes.org- Explorer
- Blockscout →
- Consensus
- Proof-of-Work
- EVM
- Shanghai-equivalent
Developer Tooling
Every framework, library, and tool in the Ethereum ecosystem works with Ethereum Classic. Full EVM compatibility — configure your chain ID and start building.
Smart Contract Development
Hardhat
Docs →Industry-standard development environment for compiling, testing, and deploying Solidity contracts.
chainId: 61 in hardhat.config.tsFoundry
Docs →Blazing fast Rust-based toolchain — forge, cast, anvil. Write tests in Solidity.
--rpc-url https://etc.rivet.link --chain 61Remix IDE
Docs →Browser-based Solidity IDE with built-in compiler, debugger, and deployment tools.
Deploy → Injected Provider (MetaMask on Chain 61)OpenZeppelin Contracts
Docs →Battle-tested library for secure smart contract development. ERC-20, ERC-721, Governor, AccessControl.
Fully compatible — use latest 5.xClient Libraries
ethers.js v6
Docs →Complete JavaScript library for Ethereum interaction. Wallet management, contract calls, event listening.
new JsonRpcProvider("https://etc.rivet.link")viem
Docs →TypeScript-first Ethereum library. Type-safe contract interactions, ENS, transaction management.
defineChain({ id: 61, name: "Ethereum Classic", ... })web3.js v4
Docs →The original JavaScript Ethereum library. Broad ecosystem support and plugin architecture.
new Web3("https://etc.rivet.link")Wallets
Ledger
Docs →Hardware wallet — secure ETC storage with Ledger Nano S Plus and Nano X. Industry-leading cold storage.
Trezor
Docs →Hardware wallet — ETC support on Trezor Model T and Trezor Safe. Open-source firmware.
MetaMask
Docs →Browser wallet — add ETC as a custom network with Chain ID 61 and the Rivet RPC endpoint.
Trust Wallet
Docs →Mobile wallet with native ETC support. No custom network configuration required.
Rabby
Docs →Multi-chain browser wallet with built-in transaction simulation and security checks.
Exodus
Docs →Desktop + mobile wallet with native ETC support and built-in exchange. Available on desktop, mobile, and browser.
Testing & Security
Slither
Docs →Static analysis framework by Trail of Bits. Detects vulnerabilities, optimizes gas, and suggests improvements.
Mythril
Docs →Symbolic execution engine for EVM bytecode. Finds reentrancy, integer overflow, and access control issues.
Echidna
Docs →Property-based fuzzer for smart contracts. Write invariants in Solidity and let Echidna find violations.
ETC is supported by 50+ wallet applications across hardware, browser, mobile, and desktop. See the full list at ethereumclassic.org.
Client Implementations
Three independent client implementations ensure decentralization and resilience. No single codebase controls the network.
fukuii
ProductionOlympia PrimaryScala
Purpose-built for Ethereum Classic — an independent implementation designed from the ground up for performance, security, and protocol parity. Fukuii is the primary client for the Olympia upgrade, coordinating EIP-1559 fee markets, treasury funding, and on-chain governance across the network.
View on GitHub →core-geth
Go
The longest-running Ethereum Classic client, forked from go-ethereum. Battle-tested stability across every network upgrade since genesis. Maintenance mode with continued critical security support.
View on GitHub →besu
Java
Enterprise-grade client built on Hyperledger Besu. Provides cross-client protocol verification and serves as the reference implementation for validating consensus compatibility across all three clients.
View on GitHub →Earn Block Rewards
Secure Ethereum Classic and earn ETC by running fukuii
170+TH/s
Network Hashrate
ETCHash
Mining Algorithm
GPU + ASIC
Compatible Hardware
Following Ethereum’s transition to Proof-of-Stake, Ethereum Classic absorbed significant mining infrastructure and stands alone as the only EVM-compatible chain secured by Proof-of-Work. Run fukuii to participate in block production and earn ETC rewards. GPU and ASIC mining supported via the ETCHash algorithm.
Institutional Products & Market Access
A regulated digital asset ecosystem — from the Grayscale ETC Trust to institutional custody, positioned for ETF conversion and compliant ERC-20 token issuance.
Grayscale Ethereum Classic Trust (ETCG)
Regulated securities exposure since 2017. The only Proof-of-Work smart contract platform with a Grayscale trust product. ETF conversion pipeline in progress — establishing ETC as the anchor asset for a compliant digital commodity ecosystem.
Ticker: ETCG · Est. 2017
Institutional Custody
Institutional-grade digital asset custody from industry-leading custodians. Multi-signature security, insurance coverage, and regulatory compliance for enterprise and fund managers.
Leading Custodians · Enterprise
Global Exchange Coverage
300+ active markets across 20+ major global exchanges. Available on every leading trading platform and retail brokerage worldwide.
300+ Markets · 20+ Exchanges
Developer Resources
Tools, documentation, and infrastructure for building on Ethereum Classic.
Olympia Properties
The Olympia governance ecosystem spans multiple open-source web properties.