none of the bets verify
If the server seed was changed at a particular nonce, the bets after that nonce should all verify using the latest server seed. If this set includes the losing streak, and unibtc was playing pretty unpredictably it's unlikely any foul play was involved.
I don't think there was any foul play involved, but here are some things that is a little suspcious:
1. The previous server seed is unknown. and so bets cannot be verified.
2. It is possible to change the seed to something that would statistically result in more losses to unibtc. Like rolls in the 48-52 range.
Yeah, the server seed is unknown because our main dev is away on holiday. Usually the main dev is making sure everything is being done properly. Our second dev changed the server seed without keeping a backup of it. Which was extremely stupid, I agree. So Uni can't verify old rolls but that was the seed he won 54 BTC with.
Ok you made a good point with changing the rolls in the 48-52 range but I don't know what else to say other than that didn't happen. There was honestly nothing malicious intended, we acted on impulse and changed his server seed quickly without giving it much thought and what the consequences would be. Like I said though, we changed the seed AFTER he withdrew the 11 BTC (that was his last big session he played). He didn't play once with the changed seed.