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https://github.com/cosmos/gaia

Cosmos Hub
https://github.com/cosmos/gaia

blockchain cosmos cosmos-hub cosmos-sdk golang ibc interchain-security

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Cosmos Hub

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# Cosmos Hub (Gaia)



![Banner!](https://miro.medium.com/max/2000/1*DHtmSfS_Efvuq8n2LAnhkA.png)



[![Project Status: Active -- The project has reached a stable, usable state and is being actively

developed.](https://img.shields.io/badge/repo%20status-Active-green.svg)](https://www.repostatus.org/#active)

[![License: Apache-2.0](https://img.shields.io/github/license/cosmos/gaia.svg)](https://github.com/cosmos/gaia/blob/main/LICENSE)

[![Version](https://img.shields.io/github/v/release/cosmos/gaia.svg)](https://github.com/cosmos/gaia/releases/latest)

[![Go Report Card](https://goreportcard.com/badge/github.com/cosmos/gaia)](https://goreportcard.com/report/github.com/cosmos/gaia)

[![GoDoc](https://img.shields.io/badge/godoc-reference-blue?logo=go)](https://pkg.go.dev/github.com/cosmos/gaia)

[![Lines of Code](https://sonarcloud.io/api/project_badges/measure?project=cosmos_gaia&metric=ncloc)](https://sonarcloud.io/summary/new_code?id=cosmos_gaia)

[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=cosmos_gaia&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=cosmos_gaia)

[![Coverage](https://sonarcloud.io/api/project_badges/measure?project=cosmos_gaia&metric=coverage)](https://sonarcloud.io/summary/new_code?id=cosmos_gaia)

[![Twitter](https://badgen.net/badge/icon/Twitter?icon=twitter&label)](https://x.com/cosmoshub)

[![Discord](https://badgen.net/badge/icon/Discord?icon=discord&label)](https://discord.gg/interchain)

[![Cosmos Hub Forum](https://badgen.net/badge/icon/Cosmos%20Hub%20Forum?icon=atom&label)](https://forum.cosmos.network)



The Cosmos Hub is the first of an exploding number of interconnected blockchains that comprise the [Cosmos Network](https://cosmos.network).



## 🤔 Why should you be interested in the Cosmos Hub



The Cosmos Hub is built using the [Cosmos SDK](https://github.com/cosmos/cosmos-sdk) and compiled to a binary called `gaiad` (Gaia Daemon). The Cosmos Hub and other fully sovereign Cosmos SDK blockchains interact with one another using a protocol called [IBC](https://github.com/cosmos/ibc) that enables Inter-Blockchain Communication. In order to understand what the Cosmos Hub is you can read this [introductory explanation](https://hub.cosmos.network).



## Documentation



For the most up to date documentation please visit [hub.cosmos.network](https://hub.cosmos.network).



For an overview of the Interchain Stack (the Cosmos SDK, IBC, etc.), as well as examples and exercises to help developers get a quick start, please visit [tutorials.cosmos.network](https://tutorials.cosmos.network).



### Additional resources



**For node operators:** If you're interested in running a node on the current Cosmos Hub, check out the docs to [Join the Cosmos Hub Mainnet](https://hub.cosmos.network/main/hub-tutorials/join-mainnet).



**For validators:** If you want to participate and help secure the Cosmos Hub and its [consumer chains](https://hub.cosmos.network/main/interchain-security), consider becoming a validator. Information on what a validator is and how to participate as one can be found at the [Validator FAQ](https://hub.cosmos.network/main/validators/validator-faq). If you're running a validator node on the Cosmos Hub, reach out to a Janitor on the [Cosmos Developers Discord](https://discord.gg/interchain) to join the `#cosmos-hub-validators-verified` channel.



**For delegators:** If you want to secure the Cosmos Hub without running a validator, you can consider becoming a delegator. Information on what a delegator is and how to participate as one can be found at the [Delegator FAQ](https://hub.cosmos.network/main/delegators/delegator-faq).



## Testnet



To participate in or utilize the current Cosmos Hub testnet, take a look at the [cosmos/testnets](https://github.com/cosmos/testnets) repository.



## Archives & Genesis



In the Cosmos Network, chain IDs have a revision number that is incremented on a hard-fork, i.e., when the chain restarts from a new genesis state.

Mainnet is currently running as `cosmoshub-4`.

If you are looking for historical genesis files and other data [`cosmos/mainnet`](http://github.com/cosmos/mainnet) is an excellent resource. 

Snapshots are also available at [cosmos.quicksync.io](https://quicksync.io/networks/cosmos.html).



## Contributing



Check out [CONTRIBUTING.md](CONTRIBUTING.md) for our guidelines & policies for how we develop the Cosmos Hub. Thank you to all those who have contributed!



## Talk to us



Follow the Cosmos Hub team's activities on the [Cosmos Hub X](https://x.com/cosmoshub) account. 



Join the conversation on the [Cosmos Hub Forum](https://forum.cosmos.network) and on [Discord](https://discord.gg/interchain).