I have seen these sets before, sitting under "Missing Checklists". Part of the reason I hesitated to take action is that I'm not sure what they are.
Are these checklists for the "digital" version of a card, where the physical card also already exists in the Database within another checklist? Or are these a checklist of the physical cards that also have the "digital blockchain" facet?
Physical cards get listed. If there is also a listing for the "digital" version, that's no different (for Database purposes) than listing cards on Panini Dunk, Topps Bunt, or any other digital collection app - and that means they shouldn't be listed here.
I'll never quit collecting entirely, but I am downsizing. Check out my COMC store and help me thin out what I don't want so I can buy cards that I do want. See something you like? Send me a message on here, and we can knock the price down quite a bit. I'll even take a bit of a loss if it means getting you a card you really want.