The list of winners does not contain proven transactions, from the outside it looks just like a list, it would be better and more transparent if we could look at all the winnings in the blockchain otherwise it does not look convincing and does not inspire confidence.
Absolutely true, once a site claims that their games are provably fair then every single game should be able to be verified. Looking at the winners list, most of them looks similar (combination name + number), only one username without number(s). However, the most important thing is about the verification of each round of the lottery. It is a must feature for a provably fair lottery. Otherwise, we should doubt about its fairness.