Is DataSift Historics functionality available via your REST API? If so, how does one construct queries that specify that one wants to find tweets from the past? Can the start and end parameters of the recording/export/start endpoint be used to select historical data? Or is Datasift Historics a separate product documented elsewhere?
Our Historics functionality is not yet generally available, and will unfortunately not be generally available until May at the earliest. We do not currently have a REST API for Historics, but it is likely that we will build one at some point in the future.