# Overview

Technical information for developers integrating with Stargaze on the Cosmos Hub.

## Architecture

Stargaze runs on the **Cosmos Hub** using CosmWasm smart contracts. All NFT collections use the **CW721** standard.

## Contract Standard

Stargaze uses CW721 (Cosmos NFT standard) with extensions for:

* Royalty payments
* Collection metadata
* Migration support

See [CW721 Contract Reference](/developers/cw721-reference.md) for message specs.

## Chain Information

| Property          | Value       |
| ----------------- | ----------- |
| Chain             | Cosmos Hub  |
| Chain ID          | cosmoshub-4 |
| Token             | ATOM        |
| Contract Standard | CW721       |

## Querying NFT Data

To query NFT data on-chain, use standard CosmWasm contract queries against the collection contract address.

For indexed data (listings, sales history, etc.), contact the Stargaze team for API access.

## Building on Stargaze

Stargaze operates on the Cosmos Hub. For general Cosmos development:

* [Cosmos SDK Documentation](https://docs.cosmos.network)
* [CosmWasm Documentation](https://docs.cosmwasm.com)
* [CW721 Spec](https://github.com/CosmWasm/cw-nfts)

## API Access

Stargaze APIs and indexer access are not publicly available. For integration partnerships, contact the team via Discord. 


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