This is a dictionary word.
It's meaning as a noun: "knowledge or awareness of a specified kind"
as verb: "realize or grasp (something)".
It occurs to me pretty catchy and meaningful.
So, what do you think?
There are a lot of domains starting with crypto*. You're competing with every single one of them. Since you need to explain "suss", I think it has little value. Wouldn't register it myself because of esthetics.
Urban dictionary even mentions "suspicious", "filthy" and "disgusting"