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# What is Gaia?
gaia
is the name of the Cosmos SDK application for the Cosmos Hub. It comes with 2 main entrypoints:
gaiad
: The Gaia Daemon and command-line interface (CLI). runs a full-node of thegaia
application.
gaia
is built on the Cosmos SDK using the following modules:
x/auth
: Accounts and signatures.x/bank
: Token transfers.x/staking
: Staking logic.x/mint
: Inflation logic.x/distribution
: Fee distribution logic.x/slashing
: Slashing logic.x/gov
: Governance logic.ibc-go/modules
: Inter-blockchain communication. Hosted in thecosmos/ibc-go
repository.x/params
: Handles app-level parameters.
About the Cosmos Hub: The Cosmos Hub is the first Hub to be launched in the Cosmos Network. The role of a Hub is to facilitate transfers between blockchains. If a blockchain connects to a Hub via IBC, it automatically gains access to all the other blockchains that are connected to it. The Cosmos Hub is a public Proof-of-Stake chain. Its staking token is called the Atom.
Next, learn how to install Gaia.