I don't think there's a public list of participants, and I don't want to manually search for them. If you have a list of names or userIDs, I'll get you a list of their full Merit data.
Perhaps scrape from your list of users that have mentioned YoBit and check for "YoBit" in their signature class?
when in the user profile, or
(without curlies) in posts.
It won't be a conclusive list but it'll be a good start.

https://yobit.net/en/signature/details/ shows the signatures they're supposed to use so it can be detected quite accurately.