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Add note that cawg id assertion validation is supported #62

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4 changes: 4 additions & 0 deletions docs/usage.md
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Expand Up @@ -119,6 +119,10 @@ For example:
auto manifest_data = builder.sign("source_asset.jpg", "output_asset.jpg", signer);
```

## CAWG identity

The C++ library can validate [CAWG identity assertions](https://cawg.io/identity/1.1-draft).
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@crandmck I think you can update the link to https://cawg.io/identity/1.1/, it's out of draft!


## More examples

The simple C++ example in [`examples/training.cpp`](https://github.com/contentauth/c2pa-c/blob/main/examples/training.cpp) uses the [JSON for Modern C++](https://json.nlohmann.me/) library class.
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