The goal of JSON Schema Profile is to augment the vocabulary of JSON Schema to represent properties of the data as opposed to focusing only on the structure.

This is a string which represents a serialized Bloom filter. Currently this is a Base64 encoded serialized value of the specific Bloom filter class used by JSONoid, but we plan to make this a more reusable format.

Bloom filters are useful to check if specific values were observed for a particular property without the need to store all the values.