> For the complete documentation index, see [llms.txt](https://docs.quipuswap.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.quipuswap.com/smart-contracts/farming/bakerregistry-contract/storage-and-types-overview.md).

# Storage and types overview

### storage\_type - main contract storage

Mapping of bakers' addresses to boolean flag: baker is registered in registry or not. Only valid bakers can be registered.

```pascal
type storage_type       is big_map(key_hash, bool)
```


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