Unchecked check boxes aggregator


I had this idea that check boxes could be aggregated in some way.
First I thought that it would be nice if empty check boxes could be searched — something similar to “checkbox:unchecked” —, but then I thought it would probably be better to have a note/file that contains the links to the blocks of other notes that contain have a check box unchecked; this file is auto-update as check boxes are check and new ones added. Would that be possible to implement?

thanks o/