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The Darwinia ecosystem consists of four official long-term networks:

Chain Introduction
Darwinia EVM-compatible blockchain using the Substrate framework, featuring cross-chain capabilities.
Crab Canary network for Darwinia, similar to Kusama for Polkadot, designed to expect and handle chaos.
Koi Primary test network for Darwinia, maintained to rigorously test new features before mainnet deployment.
Rollup Partnership with AltLayer to develop an advanced Ethereum Op Stack rollup testnet, supported by Avail DA, showcasing cutting-edge blockchain data services.