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Topic: Primedice.com | Since 2013 | Longest Running Crypto Casino | 113 BTC Jackpot! - page 1644. (Read 1990319 times)

hero member
Activity: 504
Merit: 500
Hmm.. Talk about predicting the future. Guy bets constant 0.001 on a 6x multiplier. Loses them all. Suddenly 89x's his bet, ups the multipier to 9x and then wins.


hero member
Activity: 504
Merit: 500
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 Smiley

-Stunna

Good to hear, did you make Bitcoins back in order to put it back at 5? Or just buy?

I rly hope made lol
legendary
Activity: 3192
Merit: 1279
Primedice.com, Stake.com
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 Smiley

-Stunna
hero member
Activity: 504
Merit: 500
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.

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...
legendary
Activity: 2940
Merit: 1333
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.

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.
full member
Activity: 196
Merit: 100
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.
legendary
Activity: 2940
Merit: 1333
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
legendary
Activity: 3192
Merit: 1279
Primedice.com, Stake.com
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 Grin

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% Undecided

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.
hero member
Activity: 602
Merit: 500
Acc bought - used solely for signature testing
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....
hero member
Activity: 488
Merit: 500
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 Grin

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% Undecided
legendary
Activity: 3192
Merit: 1279
Primedice.com, Stake.com
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.
hero member
Activity: 504
Merit: 500
Oo, noticed you guys changed to sha512 when going to confirm some bets. Why was this? To further randomize rolls?
hero member
Activity: 504
Merit: 500
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.

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!
full member
Activity: 196
Merit: 100
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.

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.
hero member
Activity: 672
Merit: 500
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.
hero member
Activity: 504
Merit: 500
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
hero member
Activity: 672
Merit: 500
Is the free BTC thing still going on? My user is Boelens.
hero member
Activity: 504
Merit: 500
hero member
Activity: 556
Merit: 501
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newbie
Activity: 56
Merit: 0
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