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1  Economy / Gambling discussion / Re: Do Provably fair slots exist? on: December 17, 2019, 02:34:32 AM
It is hard to determine if the slot machine is fair or not, but the thing is, you can find another type of game like card games so you can at least stop feeling cheated. I rarely play slots since I have the same issues as you.
Checking any slot games to know if it's provably fair or not is very easy. They usually provide the information on how to check the bets fairness and you can use a different verifier to double check it. The problem with most slots is they're from 3rd party providers making it impossible to verify you can't find any information on each bet and we just have to take their word that the games are being monitored to give out the mentioned numbers.

My answer is No for this topic, even on the crypto casino. Many many casinos don't have a provably fair system, some claim to have, but it's not a truly provably fair. This article will answer why.
https://medium.com/ginar-io/what-is-provably-fair-does-it-really-work-in-cs-go-gambling-fc32bc9d52a2

We are looking for a truly decentralized RNG which certified and on-chain verifiably for any game outcome.

Why NO? We have some actually, slot game at Stake, Crypto-games and Bitvest. They are provably fair slot games that can be verified.
I think you are referring to those crypto casinos that provides slot games from 3rd party providers.
Indeed they are not truly provably fair as they are probably fair only if I understand it correctly.
I heard that Stake will have more slot games next year, so we will have more provably fair slot games once Stake release their new slot game.

Stake one of the best Crypto sites where you can trust to play, but the way Stake generates the random number still manipulable. They utilize the cryptographic hash function HMAC_SHA256 on a client seed + a server seed + a nonce to generate bytes which are then used as the foundation for how they generate provably fair random outcomes on their platform, but the server seed is generated by their system as a random 64-character hex string, then can we trust the random outcome?
2  Economy / Gambling / Re: Supreem.IO Alpha 1.1// Multiplayer PvP Unique Game UPDATED on: December 16, 2019, 10:50:59 AM
What external source of randomness are you using?
Doesn't seem to be provably fair.
Read up on our post regarding this if you are confused what I mean by this : https://bitcointalk.org/index.php?topic=5194336
Also this isn't an attack, just trying to understand if there's something I missed here that makes it provably fair.


I haven't really tested their provably fair extensively
but at the first glance it looks like your standard server hashed/client seed combination and they do not use any external randomness sources
not sure about the nonces though , and didn't find how to change the client seed
here is the screen of their PF section :





if anyone would like to check their provably fair and post it here , will be appreciated


They have no external source of random in their PvP site.
Meaning it's possible for the casino to :
- Create games with a skewed outcome
- Join games knowing the outcome (i.e only games they'll win if they join)



The way of this PF system is using in many online casinos out there, and it's not a truly PF system. Many articles had been identified its drawbacks, this is one of them https://medium.com/ginar-io/what-is-provably-fair-does-it-really-work-in-cs-go-gambling-fc32bc9d52a2

a very useful article
thank you posting it , answered some of my questions in regards to the PF they are using , here is your deserved merit  Wink
and yes the main problem of the games like this is the possibility of the server admin to collude with one of the players or even be that player himself to win all the time
or when it is needed , since it won't be too conspicuous this way
PVP sites have this trust issues when you have to be absolutely sure the player that is betting against is not a house bot or a stooge
and with this type of a lottery game where the stakes determine the winning percentage you get , this is a big deal

Betting back the house bot on those PVP sites is dangerous, since now with the development of AI, there has truly intelligent machine is playing back you, but many sites are doing so. They are using their own PF system, claim to players which is provable... for their own benefits. And here we are not yet mentioned on many Scamming Sites out there.
3  Economy / Gambling discussion / Re: Do Provably fair slots exist? on: December 16, 2019, 10:39:51 AM
It is hard to determine if the slot machine is fair or not, but the thing is, you can find another type of game like card games so you can at least stop feeling cheated. I rarely play slots since I have the same issues as you.
Checking any slot games to know if it's provably fair or not is very easy. They usually provide the information on how to check the bets fairness and you can use a different verifier to double check it. The problem with most slots is they're from 3rd party providers making it impossible to verify you can't find any information on each bet and we just have to take their word that the games are being monitored to give out the mentioned numbers.

My answer is No for this topic, even on the crypto casino. Many many casinos don't have a provably fair system, some claim to have, but it's not a truly provably fair. This article will answer why.
https://medium.com/ginar-io/what-is-provably-fair-does-it-really-work-in-cs-go-gambling-fc32bc9d52a2

We are looking for a truly decentralized RNG which certified and on-chain verifiably for any game outcome.
4  Economy / Gambling / Re: Supreem.IO Alpha 1.1// Multiplayer PvP Unique Game UPDATED on: December 10, 2019, 03:55:55 AM
What external source of randomness are you using?
Doesn't seem to be provably fair.
Read up on our post regarding this if you are confused what I mean by this : https://bitcointalk.org/index.php?topic=5194336
Also this isn't an attack, just trying to understand if there's something I missed here that makes it provably fair.


I haven't really tested their provably fair extensively
but at the first glance it looks like your standard server hashed/client seed combination and they do not use any external randomness sources
not sure about the nonces though , and didn't find how to change the client seed
here is the screen of their PF section :





if anyone would like to check their provably fair and post it here , will be appreciated


They have no external source of random in their PvP site.
Meaning it's possible for the casino to :
- Create games with a skewed outcome
- Join games knowing the outcome (i.e only games they'll win if they join)



The way of this PF system is using in many online casinos out there, and it's not a truly PF system. Many articles had been identified its drawbacks, this is one of them https://medium.com/ginar-io/what-is-provably-fair-does-it-really-work-in-cs-go-gambling-fc32bc9d52a2
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