1124
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Economy / Gambling / Re: Dice - Chances of rolling the above or below consecutive times
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on: January 08, 2016, 07:39:04 AM
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Anyone know the percentages on rolling Hi/Low consecutive times?
first time is 50/50 but as you keep getting the same result, the odds have to go down right? I mean i know its always 50/50 for 1 roll but how do you calculate off of multiple rolls?
(Odds of a single roll) (Number of consecutive rolls) x 100 So, you are rolling >49.9999 twice, Chances of winning both are 0.50 2 x 100 = 25%
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1128
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Economy / Scam Accusations / Re: Rollin.io is a scam !/?
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on: January 07, 2016, 09:09:13 AM
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Because those sites that you just mentioned use a clear fair system of client seed that only client know and server hash that client know it too before the roll, it don't pop up from no where a third seed that can be for security but can be for monkey business as well.
Every site I know uses a slightly different method of provably fair system. For Rollin, the server seed and a random seed is used to get the server hash. Both the server seed and random seed is not shown to the player. (you can see it as one) The hash is shown to the player. Once the roll is made, both server seed and random seed is shown to the player, who can hash it see that they are the same. You can see that both the server seed and random seed can be taken as a single unknown string for which the hash is disclosed before the roll, which is exactly the same provably fair mechanism most off-chain dice sites use.
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1129
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Economy / Gambling / Re: 🌟Bitvest🌟 ▌Investor Plinko▐ Changeable Rows▐ Multidrop▐ BIG Promo▐ RTP:98.3%
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on: January 07, 2016, 08:53:36 AM
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I think it's a bad sign if a gambling site doesn't even have 0.2 BTC in their hot wallet..... A website should be able to pay out small withdraws at all times or it'll be bad for their reputation.
It is not rare. The hot wallet holds only a % of the funds and if someone withdraws a big amount, and makes it near-empty, it would need to be filled again.
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1130
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Economy / Scam Accusations / Re: Rollin.io is a scam !/?
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on: January 07, 2016, 08:50:38 AM
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I'm sorry for disagree but NLNico just proved no doubt that it 100% do his homework and know what writes about what writes when he writes, rollin still shady until one seed that can be more than one be in their hands until the end of the roll, and even, why they bordered to create that extra seed, can be for good, can be for evil.
Why just Rollin? By your logic, Primedice, BitDice, BetKing just about every dice site with a provably fair system can find another seed with the same hash lol. And there can be no provably fair system.
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1131
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Economy / Scam Accusations / Re: Rollin.io is a scam !/?
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on: January 07, 2016, 08:47:13 AM
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I don't see why the need of the random seed be in their hands until the end of the roll, because with an hash collision the hash can be that one that they show or some other as we can read in the article above . I don't see the need of it and i find it shady stuff (and since when you send the bet request they get your client seed, and then server reply with what ever the output it is, they can do what ever they want to the random seed), however thanks for at last some technical explanation. I'm convinced that if they try to add one extra lets call it " protection " like the random seed is cause they are accustomed to do monkey business and that could be used for protection of the casino but as well for user prejudice.
Regards Hash collisions exist, of course, because the number of characters in a hash is limited. But finding a collision is near impossible. And your argument is that Rollin (and every other dice site, because your argument holds to the same degree for any other provably fair system) generates another seed with the same hash in a second? (not possible in millions of years I think) Why don't they just brute-force all the bitcoin private keys instead? Edit: er.. after they mine all the bitcoins
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1132
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Economy / Games and rounds / Closed.
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on: January 07, 2016, 08:31:58 AM
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Closed.
Special Thanks to Rollin admins and mods for hosting the contests.
Rollin players and participants and winners for sharing the year with us.
Thank you
And Happy 2016.
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1135
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Economy / Scam Accusations / Re: Rollin.io is a scam !/?
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on: January 07, 2016, 06:12:21 AM
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I think OP is missing is this: A key aspect of cryptographic hash functions is their collision resistance: nobody should be able to find two different input values that result in the same hash output.
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1136
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Economy / Scam Accusations / Re: Rollin.io is a scam !/?
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on: January 07, 2016, 05:54:12 AM
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In advance you get "server_hash" which is a combination of "server_seed + random_seed".
The result is generated by the server_seed and the client_seed (latter is generated in the browser.) You can check that the server_seed was not changed after making the bet, by verifying the hash in combination with the random_seed. They don't know your client_seed in advance so they cannot calculate the end result before you bet. This makes Rollin provably fair. There is no way for Rollin to cheat without you noticing (if you verify the hash.)
That is a nice explanation.
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1137
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Economy / Gambling discussion / Re: "Provably fair" question
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on: January 06, 2016, 07:10:20 PM
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So your saying long as the hash that is used is from a block and not a transaction is ok?
Not entirely. The block reward is 25 BTC. If I'm a miner and find that a block I just mined makes me lose a 1000 BTC bet it would possibly be in my best interest to withhold that block and let someone else mine a different block. That still makes it probably fair It is provably fair. And no, miners get an advantage, which is against being "fair" (though I don't think someone would actually use it to his advantage) But using the term can well be questioned.
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1138
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Economy / Gambling discussion / Re: "Provably fair" question
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on: January 06, 2016, 07:00:14 PM
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So your saying long as the hash that is used is from a block and not a transaction is ok?
Not entirely. The block reward is 25 BTC. If I'm a miner and find that a block I just mined makes me lose a 1000 BTC bet it would possibly be in my best interest to withhold that block and let someone else mine a different block. I feel relying on block hashes makes it too complicated*, and transaction hashes way too unreliable. *for me, that is.
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1139
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Economy / Gambling discussion / Re: "Provably fair" question
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on: January 06, 2016, 06:54:33 PM
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I see that this system uses blockchain transactions in some way. Does this mean that the result will change at any given time? in other words, let's say I roll a 50, then immediately roll a 92 for example. Would this 92 appear if I had waited say a few minutes? or does the next roll result change with every passing second? hope this question makes sense.
Some do, some don't. For off-chain games, they don't (generally) rely on blockchain transactions or blocks, at least none of the popular ones. Usually, on-chain games like SatoshiDice and Luckyb.it have txid as a component and another daily secret key for which hashes will be given in advance. https://www.satoshidice.com/files/daily-secret-hash.txthttp://luckyb.it/secret-key-hashes.txtSo, the bet result would be different if your transaction id is different or if the bet is made on another day. Does it matter? No.The bet result is random and still has exactly the same probability of being a particular result.
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