The purpose of this document is to specify the interfaces of the Long Term Archive (LTA) within the Copernicus Space Component (CSC) Ground Segment (GS) as part of the overall CSC ESA Operations Framework. 

In particular this document aims to specify an https RESTful Application Programming Interface (API) of the LTA through which Copernicus Sentinel data products may be queried and downloaded by authorised users. This specification uses the latest OData v4 standard for RESTful.