@dminca @openstreetmap you can get a receipt, but as the OSMF isn't a charity (not going in to the nitty gritty details of non-profits and all the associated differences from country to country) tl;dr that isn't going to help you.
Note however that the German OSMF local chapter is a charity, see fossgis.de/verein/spenden
@simon @openstreetmap understood. Thank you, Simon