Developer Documentation

Everything you need to build on Ethereum Classic — protocol specifications, JSON-RPC API references, developer tutorials, and tooling documentation. With the Olympia upgrade, the full Ethereum developer toolchain (Hardhat, Foundry, wagmi, viem, ethers.js) works on ETC without modification.

Official Documentation

EthereumClassic.com

Ethereum Classic learning resources with protocol documentation and guides.

Solidity Documentation

Official Solidity language documentation with tutorials and reference.

Core-Geth Documentation

Installing Core-Geth, running and operating a node, and the JSON-RPC API reference.

Standards & Specs

EIPs (Ethereum Improvement Proposals)

Standards and specifications for Ethereum, including token standards used on ETC.

ECIPs (Ethereum Classic Improvement Proposals)

Ethereum Classic specific protocol improvements and standards.

Tutorials & Guides

OpenZeppelin Docs

Documentation for OpenZeppelin smart contract library.

CryptoZombies

Interactive Solidity tutorial through building a game.

Mastering Ethereum

Comprehensive book on Ethereum development (open source).

Quick Reference

Chainlist

Full list of ETC mainnet RPC endpoints with one-click wallet configuration.

Chainlist Mordor

Full list of Mordor testnet RPC endpoints.

RPC Endpoints

Public RPC endpoints for connecting to Ethereum Classic

Mainnet (Chain ID: 61)

Blockscout

https://etc.blockscout.com/api/eth-rpc

View all on Chainlist

Mordor Testnet (Chain ID: 63)

Blockscout

https://etc-mordor.blockscout.com/api/eth-rpc

View all on Chainlist

Block Explorers & APIs

Explore transactions, verify contracts, and access blockchain data

Blockscout

mainnet

Official ETC block explorer with comprehensive API.

Exploreretc.blockscout.com

APIetc.blockscout.com/api

Blockscout Mordor

testnet

Mordor testnet block explorer.

Exploreretc-mordor.blockscout.com

APIetc-mordor.blockscout.com/api

3xpl

mainnet

Universal blockchain explorer supporting ETC with clean interface and API access.

Explorer3xpl.com/ethereum-classic

Blockchair

mainnet

Multi-chain explorer with advanced filtering, data exports, and privacy features.

Explorerblockchair.com/ethereum-classic

APIapi.blockchair.com/ethereum-classic

OKLink

mainnet

Enterprise blockchain data platform with ETC explorer and developer APIs.

Explorerwww.oklink.com/etc

APIwww.oklink.com/api/v5/explorer

Tokenview

mainnet

Multi-chain explorer with token analytics, address monitoring, and notification APIs.

Exploreretc.tokenview.io

APIservices.tokenview.io/vipapi

Quick Links

Getting Started

Deploy your first contract

Node Clients

Run your own ETC node

Developer Tools

Frameworks and libraries

Need Help?

Join the Ethereum Classic developer community for support and discussions.

Join Discord GitHub