how would this work? if users own their own data, do you have to query them for data every time? would this be horribly inefficient ? I mean this as a techni

how would this work? if users own their own data, do you have to query them for data every time? would this be horribly inefficient ? I mean this as a technical question about how blockstack works. if you start caching or storing users data, then there is nothing stopping you from mischief with it, right?