The Cosmos Hub is the first of an exploding number of interconnected blockchains that comprise the Cosmos Network.
The Cosmos Hub is built using the 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 that enables Inter-Blockchain Communication. In order to understand what the Cosmos Hub is you can read this introductory explanation.
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You can find an introduction to the Cosmos Hub and how to use the gaiad binary as a delegator, validator or node operator as well as how governance on the Cosmos Hub works in the documentation.
If you're interested in running a node on the current Cosmos Hub, check out the docs to Join the Cosmos Hub Mainnet.
If you're running a validator node on the Cosmos Hub, reach out to a Janitor on the Cosmos Developers Discord to join the #validators-verified channel.
To participate in or utilize the current Cosmos Hub testnet, take a look at the cosmos/testnets repository. This testnet is for the Theta Upgrade expected in Q1 2022. For future upgrades of the Cosmos Hub take a look at the roadmap.
For an overview of upcoming changes to the Cosmos Hub take a look at the Roadmap.
With each version of the Cosmos Hub, the chain is restarted from a new Genesis state.
Mainnet is currently running as cosmoshub-4. Archives of the state of cosmoshub-1, cosmoshub-2, and cosmoshub-3 are available here.
If you are looking for historical genesis files and other data cosmos/mainnet is an excellent resource. Snapshots are also available at cosmos.quicksync.io.
Check out contributing.md for our guidelines & policies for how we develop the Cosmos Hub. Thank you to all those who have contributed!
We have active, helpful communities on Twitter, Discord, and Telegram.
| Cosmos Developers Discord |  |
| Cosmos Twitter | |
| Cosmos Telegram |  |
For updates on the Cosmos Hub team's activities follow us on the Cosmos Hub Twitter account.
