Kusama coin is the native coin of the Kusama blockchain, which is intended to serve as an unaudited and unrefined release of Polkadot. Kusama will serve as a trail version for Polkdadot, and will allow developers to build and deploy a parachain or try out Polkadot’s governance, staking, nomination and validation functionality in a real environment.

IRISnet is a blockchain network that is built on top of Cosmos. It aims to enable the integration of off-chain computing, as well as greater inter-operability across blockchain networks. IRISnet uses the Tendermint protocol as a consensus mechanism.