Cosmos

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
Get started with Cosmos

Bitcoin
Ethereum
XRP Ledger
Ethereum Classic
Bitcoin Cash
Dash
Litecoin
Dogecoin
Zilliqa
View all supported

The Cosmos API — build without running a node

Access Cosmos blockchain data through one unified REST API: transaction and address data, balances, block data, and real-time webhooks for on-chain events — with no Cosmos node to run and maintain. Start free and scale as you grow.

Blockchain data

Read Cosmos transactions, addresses, balances, UTXOs, and block data through one REST API.

Real-time webhooks

Subscribe to on-chain events — incoming and outgoing transactions, confirmations, and mined blocks.

No node to run

Skip the infrastructure — managed, always-synced access with no node to operate or maintain.

View the API docs Start building free

Building a full wallet? Explore Wallet as a Service.

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.