They aren't using the full Opeth logo. They are using the O in the same font. The question is, is this a custom font or a public font, in which case they have the right to use.
It's french, and mean Sun of Evening (if we translate word by word) but we just translate to "Sunset"
lol the logo is different now.
edit: nevermind, it's still on the site, but they've added another.
When I faked being from a copyright office I told them to remove it then contact me at copyright.us.gov imediatly after it's removed. I wonder if he sent an email yet?
Gotta be fake. Look at how amateurish the whole site is.
edit: here's the domain registration info:
registrant-firstname: Brian
registrant-lastname: Culwell
registrant-organization: Soleil Du Soir
registrant-street1: 14954 HWY 105 West
registrant-pcode: 77365
registrant-state: TX
registrant-city: Montgomery
registrant-ccode: US
registrant-phone: +888.5152525
registrant-email: brian@soleildusoir.com