The SIV-efforts of the CES-Team are borne out of the initial SPICE blindtest for earthquake source inversion, carried out within the EU Framework 6 Research and Training Network (RTN) "SPICE" (Seismic wave Propagation and and Imaging in Complex media: a European network). The findings of the source-inversion blindtest are published by Mai et al. (2007), and lead to a series of workshops in which a larger-scale source inversion validation framework was developed. For more details, problem descriptions, participation, access to solutions, and previous workshops, please visit our SIV-wikiand SIV-introduction.