Ethereum Classic API

Ethereum Classic came to be after a hard fork in the Ethereum network in 2016. Both blockchains hold the same record data until July of that year with Ethereum Classic (ETC) keeping hold of the original blockchain principles after the fork.

Networks Mainnet, Mordor
Released 2015
Consensus Proof of work (PoW)
Smart contracts Yes
Block time 13 seconds
Smart contract language(s) supported Solidity, Vyper, Serpent, LLL
Try Ethereum Classic APIs for free

Bitcoin
Ethereum
XRP Ledger
Ethereum Classic
Bitcoin Cash
Dash
Litecoin
Dogecoin
Zcash
View all supported

The Ethereum Classic API — build without running a node

Access Ethereum Classic blockchain data through one unified REST API: transaction and address data, balances, block data, and real-time webhooks for on-chain events — with no Ethereum Classic node to run and maintain. Start free and scale as you grow.

Blockchain data

Read Ethereum Classic transactions, addresses, balances, UTXOs, and block data through one REST API.

Real-time webhooks

Subscribe to on-chain events — incoming and outgoing transactions, confirmations, and mined blocks.

No node to run

Skip the infrastructure — managed, always-synced access with no node to operate or maintain.

View the API docs Start building free

Building a full wallet? Explore HD Wallets.

Need prices too? See the crypto price API, or run your own Ethereum Classic RPC nodes.

The original Ethereum blockchain

Both ETC and ETH share the same basic principles and functionalities, Ethereum Classic still facilitates running smart contracts and offers all the same benefit of a decentralized blockchain. The main difference comes down to the consensus algorithm. Ethereum Classic uses the Proof of Work concept while Ethereum is working towards Proof of Stake.

Frequently Asked Questions

Which blockchain does Ethereum Classic run on?

Ethereum Classic settles on Ethereum Classic. Tokens live in their own contracts rather than in the account balance, so reading them means calling the token contract; and every transaction needs the account's next nonce, which the same API returns.

What kind of chain is Ethereum Classic?

It is an account-model EVM chain — every address has a single balance and a nonce.

Can I test Ethereum Classic without spending real funds?

Yes — the same endpoints serve Ethereum Classic's Mordor testnet, so you can build and verify an integration end to end before you touch mainnet.

How do I read Ethereum Classic balances and transfers?

Use Address Latest for current state and recent activity — it needs no setup and answers for roughly the last 14 days. For a full history, Address History requires the address to be synced first, which then bills per address per day for as long as it stays synced.

What does reading Ethereum Classic data cost?

It depends on the endpoint family rather than on Ethereum Classic itself: single-record calls are charged per request, while list endpoints are charged per page returned, and a synced address adds a daily monitoring charge. The pricing calculator has the current per-chain figures.