Did MJ put all 3 kids (prince, oaris and blanket) under his own mother karthrine's custody and where are they staying now?

As far as I know it keeps changing, one minuto it is Katherine and the successivo minuto it is one of Tito's children ect. I think they are all myths the media have created and I personally believe that Katherine is taking good care of them and that the children are at her house being looked after and restoring Neverland.