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Blackjack not provably fair?


williamshennie9

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Posted

Heya everyone

So since provably fair is a hot topic at the moment, I thought I would bring it to the attention of the developers that blackjack is not entirely provably fair. The "provably fair part" only starts after the first 4 cards have been dealt. So once the dealer's cards, and the 2 player cards are dealt, then only the cards following that are provably fair.

Here is an example: 

BLACKJACK: 3,399,829,578

placed by williamshennie9 on 02/03/2019

Wagered

0.00000000 doge.svg

Multiplier

0x

Profit

0.00000000 doge.svg

(see the first picture for the game)

So in this example, if you verify the bet, this is what you get (see the second pic). Basically this is a huge problem, because it allows Stake to manipulate the first 4 cards that are dealt, in other words it is not really provably fair. This is a huge problem, as it could allow Stake to rig the game when high value bets are being made, and that is why is this a very serious problem. The entire structure of Stake rests on it being known as a provably fair casino, and this example proves how the first 4 cards can be manipulated to make you lose (assuming the system alters the cards when very high bets are made).

aaaa.JPG

aaavb.JPG

Posted

I've tried verifying the game blackjack yesterday. And I didn't thought of it that way, you're right. The 2nd hand of the banker isn't part of the provably fair system.

Posted
2 minutes ago, chipito said:

ow man man man man WTF is going on here........

they need to come with a good argument now, because in a way we are fckd all

Luckily it is just Blackjack and video poker. The other games seem to be 100% provably fair :)

Posted
29 minutes ago, williamshennie9 said:

Heya everyone

So since provably fair is a hot topic at the moment, I thought I would bring it to the attention of the developers that blackjack is not entirely provably fair. The "provably fair part" only starts after the first 4 cards have been dealt. So once the dealer's cards, and the 2 player cards are dealt, then only the cards following that are provably fair.

Here is an example: 

BLACKJACK: 3,399,829,578

placed by williamshennie9 on 02/03/2019

Wagered

0.00000000 doge.svg

Multiplier

0x

Profit

0.00000000 doge.svg

(see the first picture for the game)

So in this example, if you verify the bet, this is what you get (see the second pic). Basically this is a huge problem, because it allows Stake to manipulate the first 4 cards that are dealt, in other words it is not really provably fair. This is a huge problem, as it could allow Stake to rig the game when high value bets are being made, and that is why is this a very serious problem. The entire structure of Stake rests on it being known as a provably fair casino, and this example proves how the first 4 cards can be manipulated to make you lose (assuming the system alters the cards when very high bets are made).

aaaa.JPG

aaavb.JPG

My god this is really becoming bigger of a problem in leaps and bounds, shit escalated quickly...

Do we have any form of response on this yet? 

  • Moderator
Posted

I will try to explain everything as simply as possible. The Stake can not manipulate the bets. This is against the rules of seed-pair. If you make a request, you get a seed-pair that cannot change until you make a request to change the seed.

The first 4 cards are dealt out alternately on one card, you can check it in the section Provably fair. Further, the sequence of cards following them also corresponds to the order that you can check.

I specifically conducted an experiment for video poker for matching the sequence of cards.

Screenshot_13.png.a4f09934a796c33e7fcf519046ce9aaa.png

Screenshot_14.png.5a6747a26677350ab03c2473c38b69b0.png

The first screenshot shows the sequence of cards for this bet. The first is the first to receive cards - the values correspond with the top row of cards in the screenshot of the bet. The second highlighted correspondence of the second row of cards. and it fits the same way.

 

 

 

Posted

lol, the shit with video poker just opened a can of worm i guess?.. but its a good thing, now more people are actually being active in making sure what we have been told is the truth and accurate.. not very many do, they just trust what iss said or written and this is because of many different reasons.. either too lazy, dont care or simply do not realky understand how it works in the first place  and those are just few examples why most dont really verify and just shrugs offs losses and welcome the wins.. not going to  assume the sitaution, but i am glad it lit a spark on certain, individuals.. xD 

Posted
1 hour ago, williamshennie9 said:

Heya everyone

So since provably fair is a hot topic at the moment, I thought I would bring it to the attention of the developers that blackjack is not entirely provably fair. The "provably fair part" only starts after the first 4 cards have been dealt. So once the dealer's cards, and the 2 player cards are dealt, then only the cards following that are provably fair.

Here is an example: 

BLACKJACK: 3,399,829,578

placed by williamshennie9 on 02/03/2019

Wagered

0.00000000 doge.svg

Multiplier

0x

Profit

0.00000000 doge.svg

(see the first picture for the game)

So in this example, if you verify the bet, this is what you get (see the second pic). Basically this is a huge problem, because it allows Stake to manipulate the first 4 cards that are dealt, in other words it is not really provably fair. This is a huge problem, as it could allow Stake to rig the game when high value bets are being made, and that is why is this a very serious problem. The entire structure of Stake rests on it being known as a provably fair casino, and this example proves how the first 4 cards can be manipulated to make you lose (assuming the system alters the cards when very high bets are made).

aaaa.JPG

aaavb.JPG

 

 

 

7

I don't see any problem with your bet, first 2 cards are your hand then the dealer card, it's 848 -> your hand is 84, and dealer's hand is 8. What's wrong? You make people think stake is not fair because of your misunderstanding the provably fair.

Edit:lOL, now I understand.

its a visual bug of the verify in the site.Sr mate

 

Posted
4 minutes ago, firenine said:

image.thumb.png.bb01e4b673a038cf89b40ba0b49a1c08.png

I dont see anything wrong with this hand.

Woah, what a relief!! Thank you. It must be a visual bug then on the new version of Stake. Seems like the new version only shows from the 4th card onwards, but in actual fact it is all provably fair. You literally made my day, because I was stressing, thank you!!

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