For me, "digital" is a bad word to use. It suggests "credit" to a merchant because merchants only know 2 types of money - cash or credit. THats what they're interested in. All money is digital these days - especially on the internet, so the term "digital" is not particularly informative and even
has potentially negative connotations to a merchant.

"Anonymous" is another ambigious term to the general joe. Joe public wants to keep his stuff private for sure but I don't know if he wants to be  "anonymous". That word is something that lives in the world of cryptocurrency enthusiasts but for regular people turns some people on and others off. "Private" is universally acknowledged as being essential in finance - whether for reasons of commercial competitiveness or personal privacy.

"Cash" is brilliant. Cryptocurrency IS digital cash in the sense that it does not require a counterparty to maintain a balance and define its existence. IMO the word "cash" must be got into the slogan.