BIM Collaboration Format (BCF) allows different BIM applications to communicate model-based issues with each other by leveraging IFC models. BCF is a buildingSMART International openBIM standard, like IFC.
More information about BCF in buildingSMART International.
Tridify supports BCF; you can open a BCF file in Tridify BIM Viewer, add new comments and export the file as a BCF file. All this can be done with a Viewer's Commenting Tool.