I admit, the spatialite-db's I use and set up have an extended spatial_ref_sys table. I add a column called srtext which is supposed to contain the WKT of the SRS.
You might want to consider setting up something like
Upper( y.[auth_name] ) || ':' || y.[auth_srid] as [SpatialReference]
if you are sure that your SRS is defined in srs-list of the Proj4Utility project and you don't want that column at all.