Cosmos is a decentralized network of interconnected blockchains, with the Cosmos Hub blockchain protocol being the underlying one. Cosmos’ native cryptocurrency ATOM is securing the Hub by staking and distributing transaction fees and staking rewards.

Networks Mainnet, Testnet
Released 2016
Consensus Tendermint Byzantine fault-tolerant (BFT)
Smart contracts Yes
Block time ~ 1 second
Smart contract language(s) supported Ethermint, Secure EcmaScript (SES), Pact
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The Cosmos technology

The Cosmos' ecosystem is rapidly growing with independent interoperable blockchains connected with the ground-breaking IBC (Inter-Blockchain Communication) protocol and built using developer-friendly tools. Blockchains in the Cosmos Network are able to exchange information and tokens between each other permissionlessly.