How to query stream data? I mean is it possible to filter streams based on the data inside the stream?

How to query stream data? I mean is it possible to filter streams based on the data inside the stream?

You can only query streams by their streamID or using the IDX index using something like DID-DataStore. Currently there is no way to filter based off of the data in the stream.

Please note that the Ceramic core developers are currently working on a major new release for Ceramic that will add graph database features to Ceramic, which will include a native indexing system and a GraphQL query API, which will enable much more expressive and powerful querying capabilities to Ceramic than what is currently possible. So stay tuned!