Thanks. 
My face.
It's possible, although I think it we went down that route we might want to add a full hash generation/testing/loading/saving UI, which is a bit of work.
There are a bunch of small, free, existing tools which do the job already and should integrate well with Opus, so I don't know if there's a lot of value we can add replicating them in Opus. It might be worth it, though. I haven't used many of the tools, except QuickSFV which I don't think has a clipboard-compare mode, so maybe none of them do a good job here?