This is clearly not a mistake. All the facts show a direct intention to scam players.
1. only winning bets were skipped
2. it knows, even though finnile changes his bet method, to skip the winning bets.
3. The site is very young and the people behind it are unknown.
If the people defending Dicebitcoin try to make this smaller than it is, they are basically hurting their own bitcoin community and the bitcoin gambling/investment community.
Do not try to defend this, the facts are that it was skipping winning bets even when he changes the bet from high to low.
Provable fair is only fair if you verify the bets. Not many people verify and wouldn't notice a few wrong bets. This incident today was found because finnile saw ~95% of his 50% bets losing. Something was wrong and it wasn't a mistake or bug! With a bet history of 50bets, no one can possible prove all their bets and dicebitcoin know this.
Take a few winning bets from all players (especially bot players) and you have a nice surge in profits. But in finniles case, that was nearly all winning bets. Sad day for bitcoin gambling trust.
Provable fair must change so that the client side is proving every bet. that means the server seed must change after each bet.
This is how provable fair should work: The hash for the next bet is sent to client from server, client sends bet type and client seed, server calculates bet outcome and sends server seed to client. Client checks hash and seed result and confirms it is correct. If not correct, the client throws an alarm. server sends new server seed hash to client and the process repeats.
I would not play at this site, and i would question the trust circle of the owners as they have been unknown people ever since the start. With all the signature ads, it seems to me they got popular via a few backers and then the snowball effect happened. Also, doog playing there gave many confidence. But don't be sheep and follow a small few.
This is not true tho. As forcing a change in the server seed whilst not changing your client seed will allow the operators to check which server seed would provide a favorable outcome for the house. this was a problem with some sites out there, notably, the original PD.