The Catholic Church is a divine institution established by Jesus Christ himself so there is no way that you or anybody else can assure anything.  You only sound grandiose and out of touch when you assert that.  What we do know objectively are that there is the legitimate dubia of the 4 Cardinals and the filial correction of 62 (and counting) theologians and priests.  What we also know is that the full story of what forced Pope Benedict to resign and the full story of what happened at the conclave that elected Pope Francis have yet to be told in its entirety.   Those have bearing on the ultimate validity of this papacy based on the Apostolic constitution and the final standing of this pope since it is part of Church teaching that a pope ceases to be pope with an act of manifest heresy.  In Pope Francis we have the luxury of choice among many heresies.  We were warned by the most faithful Argentines that this pope left the church in Argentina in real shambles.  
We just didn't listen.