# Bloom Types

## `Bloom.Prepared`

Prepared bloom filter for use with [`Bloom.containsPrepared`](/api/Bloom/containsPrepared)/[`Bloom.containsHash`](/api/Bloom/containsHash).

**Source:** [src/core/Bloom.ts](https://github.com/wevm/ox/blob/main/src/core/Bloom.ts#L189)