We highly doubt anyone was cheating, we made the switch to Sha512 as it was very simple to implement and more practical in the long run.
Also we've restored the maximum bet payout to 5BTC
-Stunna
Topic: Primedice.com | Since 2013 | Longest Running Crypto Casino | 113 BTC Jackpot! - page 1643. (Read 1989518 times)
May 24, 2013, 09:11:34 PM
Hey,
We highly doubt anyone was cheating, we made the switch to Sha512 as it was very simple to implement and more practical in the long run.
Also we've restored the maximum bet payout to 5BTC
-Stunna
We highly doubt anyone was cheating, we made the switch to Sha512 as it was very simple to implement and more practical in the long run.
Also we've restored the maximum bet payout to 5BTC
-Stunna
May 24, 2013, 09:00:26 PM
Your calculation is not 100% correct: http://www.schneier.com/blog/archives/2005/02/sha1_broken.html
But even with using these failures I doubt it will be possible to crack this within 24h-1second on a normal home PC.
But even with using these failures I doubt it will be possible to crack this within 24h-1second on a normal home PC.
I'm aware of that blog post, but it's entirely unrelated to primedice. That post is about how some Chinese researchers allegedly discovered a method that makes it 2048 times easier than was previously thought to find a collision in sha1 outputs. But we don't care about collisions in primedice. All we care about is how hard it is to reverse the hash and find the daily secret. The Chinese discovery doesn't help in that regard at all.
Even if the blog was relevant, and the findings it referred to make it 2048 times easier to find the primedice daily secret, just replace the '9 million' with a '4 thousand', but leave the 'billion billion billion billion' in there. It's still too big a number to comtemplate. Even if you convince every Bitcoin miner to switch from mining to trying to steal Stunna's Bitcoin stash (and good luck getting the ASIC miners to figure out how to switch from sha256 to sha1...)
I think the natural conclusion here is: nobody was cheating; it's just too hard.
Now that you put it that way...
May 24, 2013, 08:56:52 PM
Your calculation is not 100% correct: http://www.schneier.com/blog/archives/2005/02/sha1_broken.html
But even with using these failures I doubt it will be possible to crack this within 24h-1second on a normal home PC.
But even with using these failures I doubt it will be possible to crack this within 24h-1second on a normal home PC.
I'm aware of that blog post, but it's entirely unrelated to primedice. That post is about how some Chinese researchers allegedly discovered a method that makes it 2048 times easier than was previously thought to find a collision in sha1 outputs. But we don't care about collisions in primedice. All we care about is how hard it is to reverse the hash and find the daily secret. The Chinese discovery doesn't help in that regard at all.
Even if the blog was relevant, and the findings it referred to make it 2048 times easier to find the primedice daily secret, just replace the '9 million' with a '4 thousand', but leave the 'billion billion billion billion' in there. It's still too big a number to comtemplate. Even if you convince every Bitcoin miner to switch from mining to trying to steal Stunna's Bitcoin stash (and good luck getting the ASIC miners to figure out how to switch from sha256 to sha1...)
I think the natural conclusion here is: nobody was cheating; it's just too hard.
May 24, 2013, 08:51:27 PM
Your calculation is not 100% correct: http://www.schneier.com/blog/archives/2005/02/sha1_broken.html
But even with using these failures I doubt it will be possible to crack this within 24h-1second on a normal home PC.
But even with using these failures I doubt it will be possible to crack this within 24h-1second on a normal home PC.
May 24, 2013, 08:45:07 PM
use his possibly huge mining rigs to break the hash (sha1 is breakable by GPUs nowdays)
But wouldn't he still need to search on average half the search space of possible daily secrets?
One of my recent bets had the secret of "3f64ba20351af718e715e1c5eae61e86812ea1ae". That's a 40 character hex string, or 160 bits of secret (4 bits per hex digit). To find the secret, I'd have to compute on average 2^159 sha1 hashes within say 23 hours (then I'd have an hour before it changed again to win lots of bets).
To be able to do that, I'd need to be able to run sha1 hashes at a rate of around 9 million billion billion billion billion hashes per second.
Can GPUs really do that?
Code:
>>> 2**159 / (23*60*60) / 1e9 / 1e9 / 1e9 / 1e9
8825492.979051346
8825492.979051346
May 24, 2013, 04:24:24 PM
Just had a few rounds here (username Herbert) and have to say I'm impressed! The UI is totally slick, bets are rolling fast, everything works fine. So it looks like I need to figure out some new ways to get rich 
Have to say though from my own experience: I can't believe you are running with 1% house edge. The variance will kill you unless you have huge piles of bitcoin. I started bitbattle.me with 1.8% and raised to 1.9 after a few months and still on overall the real house edge I have is way below 1%
Have to say though from my own experience: I can't believe you are running with 1% house edge. The variance will kill you unless you have huge piles of bitcoin. I started bitbattle.me with 1.8% and raised to 1.9 after a few months and still on overall the real house edge I have is way below 1%
Appreciate the kind words, that absolutely means a lot to me coming from you. The 1% house edge has been destroying us, (-300 BTC in under a week) I am considering raising it for sure. Thanks for the advice, will certainly take it into consideration.
May 24, 2013, 04:17:23 PM
I felt so bad that you were down 300 BTC that I "donated" you guys 2.5 BTC just now...I swear your RNG hates me. 5 or 6 losses in a row almost every session. Max wins in a row is like 2 or 3....
May 24, 2013, 04:09:47 PM
Just had a few rounds here (username Herbert) and have to say I'm impressed! The UI is totally slick, bets are rolling fast, everything works fine. So it looks like I need to figure out some new ways to get rich
Have to say though from my own experience: I can't believe you are running with 1% house edge. The variance will kill you unless you have huge piles of bitcoin. I started bitbattle.me with 1.8% and raised to 1.9 after a few months and still on overall the real house edge I have is way below 1%
Have to say though from my own experience: I can't believe you are running with 1% house edge. The variance will kill you unless you have huge piles of bitcoin. I started bitbattle.me with 1.8% and raised to 1.9 after a few months and still on overall the real house edge I have is way below 1%
May 24, 2013, 12:29:16 PM
Oo, noticed you guys changed to sha256 when going to confirm some bets. Why was this? To further randomize rolls?
Hey,
Confirming we've changed to Sha512. All bets prior this update can still be calculated as provably fair through using sha1. Everything else is the same with the system apart from this. Max bet is doubled currently, we will restore it to full by the end of today hopefully.
May 24, 2013, 10:41:33 AM
Oo, noticed you guys changed to sha512 when going to confirm some bets. Why was this? To further randomize rolls?
May 24, 2013, 06:28:51 AM
Small analysis of the data above:
After 1: 25.04% win vs 24.94% loss: 49.98% win chance
-more data-
How to read? So, you have won the last round, you want to know what the chance of winning after 5 spins is. So in the row: After 5, you see it's 25.4%. Was your last round a loss, then after 5 it will be 24.51%.
(this is done with winning with 50.00 and higher).
What does this show? Nothing, it's random.
After 1: 25.04% win vs 24.94% loss: 49.98% win chance
-more data-
How to read? So, you have won the last round, you want to know what the chance of winning after 5 spins is. So in the row: After 5, you see it's 25.4%. Was your last round a loss, then after 5 it will be 24.51%.
(this is done with winning with 50.00 and higher).
What does this show? Nothing, it's random.
Hey vlees, what does the 25% chances relate to? I know you've probably clearly explained it however I'm still a little confused. Shouldn't it be 50% win 50% loss after losing x amount irregardless? I don't see how the 25%'s come in is all.
Also Namworld, I understand your a large investor in Coinroll judging by the trust you gave them (regarding the 200 BTC investment or what not), but I don't think Stunna would appreciate you advertising on his thread. Then again I might be wrong, sorry Stunna if you don't mind ^_^
It means that if you have previously won, the chance for the next roll to be a win is 25.04%. If you have previously lost, the chance for the next roll to be a win is 24.94%. Together this is 49.98% and the other 50.02% are the chance of losing the next round.
Ohhh, cheers!
May 24, 2013, 06:12:16 AM
Small analysis of the data above:
After 1: 25.04% win vs 24.94% loss: 49.98% win chance
-more data-
How to read? So, you have won the last round, you want to know what the chance of winning after 5 spins is. So in the row: After 5, you see it's 25.4%. Was your last round a loss, then after 5 it will be 24.51%.
(this is done with winning with 50.00 and higher).
What does this show? Nothing, it's random.
After 1: 25.04% win vs 24.94% loss: 49.98% win chance
-more data-
How to read? So, you have won the last round, you want to know what the chance of winning after 5 spins is. So in the row: After 5, you see it's 25.4%. Was your last round a loss, then after 5 it will be 24.51%.
(this is done with winning with 50.00 and higher).
What does this show? Nothing, it's random.
Hey vlees, what does the 25% chances relate to? I know you've probably clearly explained it however I'm still a little confused. Shouldn't it be 50% win 50% loss after losing x amount irregardless? I don't see how the 25%'s come in is all.
Also Namworld, I understand your a large investor in Coinroll judging by the trust you gave them (regarding the 200 BTC investment or what not), but I don't think Stunna would appreciate you advertising on his thread. Then again I might be wrong, sorry Stunna if you don't mind ^_^
It means that if you have previously won, the chance for the next roll to be a win is 25.04%. If you have previously lost, the chance for the next roll to be a win is 24.94%. Together this is 49.98% and the other 50.02% are the chance of losing the next round.
May 24, 2013, 05:45:23 AM
Is the free BTC thing still going on? My user is Boelens.
I think it was just people who posted whilst the site was down haha
Aw darn, I posted just before that =P.
May 24, 2013, 05:29:32 AM
Is the free BTC thing still going on? My user is Boelens.
I think it was just people who posted whilst the site was down haha
May 24, 2013, 05:18:32 AM
Is the free BTC thing still going on? My user is Boelens.
May 24, 2013, 05:18:08 AM
Thanks for .01
May 24, 2013, 04:39:02 AM
0fed6f9af71c6183148c9e28055710ae
May 24, 2013, 04:32:42 AM
fredtrader
May 24, 2013, 04:30:23 AM
Quote from: hasher87
Remember when i said that i prefer coinroll than primedice on the other thread? Its because there's no predetermined server seed roll set by coinroll as they are using transaction id as seed, whereas primedice has its own server seed roll set in advance already
It would be great if stunna can provide us where and how the server seed roll generated
It would be great if stunna can provide us where and how the server seed roll generated
Hey,
Please read over our Verification & Integrity section if you doubt our provably fairness. It's all explained there & every rolls integrity can be verified through that. Server seed is a randomly generated sha. This is what changes what the roll is. The user has the ability to change the client seed & the secret can't be manipulated due to it having to be the same for every roll on that day. Therefor the server seed doesn't really matter as to where it comes from, since if your worried about it simply change the client seed.
One of the things on our to-do list however is making it easier for people to check their bets for provably fairness, certainly could be much simpler.
Also if you posted your user ID/name here recently, check your wallet.
But yeah appreciate the info, and the wallet as well. i might use it for primedice bet
May 24, 2013, 04:23:12 AM
Also if you posted your user ID/name here recently, check your wallet.
Nothing 
Hey, you gave me an address I'd like your ID/name please =p
Shootoo
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