Personally, I don't have time to play with these things and check server seed hashes before and every roll, but you have good point that such things is difficult to prove. But I think that if someone from this forum with good reputation would record such video, there would be no reasons not believe him. But now we just have some talk without any solid proofs.
That's already been done by several people in the scam accusations forum and has spanned multiple years between posts which shows the practice is still current and never ceased. Like I said before, NO ONE can "show solid proof", it's something they have to experience for themselves (which my bot provided via it's statistics) and those that give this statement, like I said, are ones who dont actually save anything themselves or they would have noticed it. It took about 12000 rolls (around 1.5yrs or so) before I saw it twice with my own account (although I'd seen it much sooner than that via stats the bot gathered). When TheQuack decided to ban the account yesterday after I posted my Free Roll stats window (I guess he finally noticed I did indeed have a bot rolling and RECORDING it all 24/7 365 it was over 29K rolls, that same bot did the same thing for 596 accounts for 3 years, recording roll statistics), it was to late. I'd already seen the manipulation multiple times myself on my own account as well as my bot's users, we were all well aware of the manipulation on free rolls. None of us really cared if those are manipulated or not but we did find it underhanded to market it as "provably fair" when it's only partially "provably fair". As long as the roll fell below Tier 4, roll results were never manipulated. To us it was the dice rolls that mattered and over the millions of rolls I recorded, I saw no manipulation of those (my guess is that its easier to prove dice roll manipulation since you can do 4 per second as opposed to 1 per hr for free rolls). He can try to hide it publicly all he wants, but I know the truth and so does he. Or maybe he doesnt, and he's truly in the dark but I highly doubt that.
Well, I want to believe you, but the question is how do you know that the rolled number was 999x and they replaced the server seed to change it?
At least you are saying it never happened to the multiply game, this is good, because if they wanted to cheat anyone they would do that in the multiply.