Kusama is a scalable network of specialised blockchains built using Substrate and sharing a nearly identical codebase with Polkadot. It acts as a "canary network," serving as a risk-taking, fast-moving platform for experimentation, where developers can test new blockchain features and applications before launching them on the Polkadot network.
Kusama operates with a dual blockchain structure that includes a relay chain and parachains. The core technology is built on Substrate, employing a hybrid consensus mechanism known as Nominated Proof of Stake (NPoS). Validators, chosen by nominators, produce blocks and validate transactions. Kusama supports smart contracts and custom blockchains via parachains, fostering enhanced scalability and interoperability.
Kusama offers a range of use cases:
Kusama was founded in 2019 by Dr. Gavin Wood, a co-founder of Ethereum and founder of Polkadot. It was developed to provide a testing environment for Polkadot, branded as a "canary network." It launched in August 2019, employing the same design principles as Polkadot, including a relay chain and parachains. Over time, Kusama has implemented governance updates and introduced parachain slot auctions, reinforcing its role as a flexible and experimental blockchain platform. The ecosystem has grown notably, reflecting its significance within the broader blockchain community.