Hmm, that's what they said when it was introduced but you look at some of the fights with the Silver belt on the line and it just seems to be another one of their pointless belts.
Just in Britain we had DeGale/Zuniga and Bellew/Bolanti for the silver belt. Interim titleholders tend to be mandatory challengers for the full belt but Bellew is WBC no.3 and is having to fight Chilemba in a final eliminator.
And Guerrero is the WBC "interim" champ at welterweight so that belt is still around as well. Guerrero gets talked about as Floyd's mandatory (
) whereas the same doesn't happen with Silver belt holders.