One of the objectives of the CUP4SOIL project is to prepare and develop a user community that tests and validates data products suitable for soil health/quality assessment. One of the pillars of this objective is the development of showcases. This document contains the showcase of the State Office for Mining, Geology and Raw Materials of Brandenburg, Germany. It describes the aim, partner, methodology and results. The goal of the project is the estimation and prediction of the organic carbon stock of mineral soils for agricultural fields (cropland, grassland) in Brandenburg. It involved a state-wide sampling campaign at 650 sites and resulted in a map of the spatial distribution of soil organic carbon stocks in Brandenburg. The showcase is expected to gain important and user-based information for the usefulness of the generated EO-based information products as well as a more detailed view into the purpose, for which the information products might be used in the future. Keywords: remote sensing, cropland, grassland, mineral soils, bare surface reflectance composite, sentinel, Germany, random forest, map