I see only one DT tag on the previous account, from RHavar but there were a lot of people discussing that issue. I have no idea if the tag is correct since I do not have sufficient knowledge on the issue.
I consider RHavar very knowledgeable when it comes to provablye fair systems, and I trust him when he says this:
They can actually check if you're going through the impractical ceremony on not! I verified this by checking the network requests, and AFAICT the only way to view the server-seed hash is via a network request to "/ajax/modal" with "modal=fairness".
So this means they can actually if you're verifying the bets or not. So they could trivially cheat only when they know you won't be able to tell (when you never requested the server-seed hash).