Client Implementations

EVM execution client in Scala 3 — one binary runs several networks at once in one JVM process, each isolated with its own state, metrics, and configuration. A further network is configuration rather than a new client. Consensus is selected per deployment: native Proof-of-Work for Ethereum Classic and Mordor, or Proof-of-Stake with a built-in consensus layer or an external client over the Engine API. Ethereum Classic's first native client — built ground-up for ETC rather than derived from an Ethereum client — and the primary ETC client for the Olympia era.

A go-ethereum derivative maintained for Ethereum Classic, in maintenance only. It implements the full Olympia specification — ECIP-1111, 1112, 1121 and 1122 — and its Mordor sync is confirmed, so existing operators have a supported path through the upgrade. New deployments should use Fukuii.