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1121  Economy / Gambling discussion / Re: nice gambling hack on: January 09, 2016, 11:21:47 AM
Gambler's fallacy + Martingale = Hack?  Shocked
1122  Economy / Games and rounds / Thank you :) on: January 08, 2016, 05:52:40 PM
Thread locked.
1123  Economy / Games and rounds / Re: Bitonic has sold over 200 000 bitcoins. Today Puzzle part II! on: January 08, 2016, 05:17:34 PM
Is it possible that you could give the next puzzles every 26-30 hours instead of 24?

Personally, it is difficult for me to be online at 15 EST on weekdays. So, may be you could do so, so as at least a few puzzles will be convenient to people living in various time zones?

Just a suggestion.
1124  Economy / Gambling / Re: Dice - Chances of rolling the above or below consecutive times on: January 08, 2016, 07:39:04 AM
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 0.502 x 100 = 25%
1125  Economy / Games and rounds / Re: Rollin Creative Contests | Meme & Video Contests [CLOSED] on: January 08, 2016, 05:40:49 AM
My rollin.io username is marbleregional
I was out of country so I didn't know I won, the address you sent it isn't accessed by me or anyone it's an old address I don't know how to get

Darn! I sent it less than an hour before you posted.. You weren't active from December 12th when I checked before sending the amount.

You have posted this address here : https://bitcointalk.org/index.php?topic=1281365.msg13199300#msg13199300
Address was last used just a day before you went out of the country.

I know, I saw your post after I posted.
Looks like I'm screwed because I can't get that address :-(
Thanks anyway I guess

I see. But you should. You have posted it thrice. Huh
May be E-Coin deposit address?

https://bitcointalk.org/index.php?topic=1281759.msg13192534#msg13192534
https://bitcointalk.org/index.php?topic=1281759.msg13192787#msg13192787

It does look like a deposit address of some sort.

Edit : PM'd.

Edit2: Locking the thread.
1126  Economy / Gambling / Re: PlinkoPot.com V2.0 BTC Plinko - <1% House Edge - Up to 999x - V2 Now Live! on: January 07, 2016, 06:14:51 PM
For me, the plinko board takes half of the screen and the bet box and chat lotto takes the other half. The former is a bit smaller to my liking.

How about making it 75:25? Bigger plinko board, and width of the boxes reduced by half?
1127  Economy / Games and rounds / Re: Rollin Creative Contests | Meme & Video Contests [CLOSED] on: January 07, 2016, 04:52:08 PM
My rollin.io username is marbleregional
I was out of country so I didn't know I won, the address you sent it isn't accessed by me or anyone it's an old address I don't know how to get

Darn! I sent it less than an hour before you posted.. You weren't active from December 12th when I checked before sending the amount.

You have posted this address here : https://bitcointalk.org/index.php?topic=1281365.msg13199300#msg13199300
Address was last used just a day before you went out of the country.
1128  Economy / Scam Accusations / Re: Rollin.io is a scam !/? on: January 07, 2016, 09:09:13 AM
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.
1129  Economy / Gambling / Re: 🌟Bitvest🌟 ▌Investor Plinko▐ Changeable Rows▐ Multidrop▐ BIG Promo▐ RTP:98.3% on: January 07, 2016, 08:53:36 AM

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.
1130  Economy / Scam Accusations / Re: Rollin.io is a scam !/? on: January 07, 2016, 08:50:38 AM
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.
1131  Economy / Scam Accusations / Re: Rollin.io is a scam !/? on: January 07, 2016, 08:47:13 AM
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
1132  Economy / Games and rounds / Closed. on: January 07, 2016, 08:31:58 AM
Closed.

Special Thanks to Rollin admins and mods for hosting the contests.

Rollin players and participants and winners for sharing the year with us. Smiley

Thank you

And Happy 2016. Cheesy
1133  Economy / Games and rounds / Re: Rollin Creative Contests | Meme & Video Contests [CLOSED] on: January 07, 2016, 08:31:38 AM
Closed.

Special Thanks to Rollin admins and mods for hosting the contests.

Rollin players and participants and winners for sharing the year with us. Smiley

Thank you

And Happy 2016. Cheesy
1134  Economy / Games and rounds / Re: Alert on: January 07, 2016, 08:27:54 AM
If marbleregional (profile : https://bitcointalk.org/index.php?action=profile;u=552863 ; Last Active:   December 12, 2015) does not give a Rollin username within the next 24 hours, the prize will be either redistributed among existing winners or sent to 1Ff88MA9hmqdqVctbnCWeEjYYowuoEmNBt (posted here)

Sent!

https://blockchain.info/tx/df88b8ad3fdb0c1ef1a471433da1d257991ada6857fa38033245265e8d84c5f2
1135  Economy / Scam Accusations / Re: Rollin.io is a scam !/? on: January 07, 2016, 06:12:21 AM
I think OP is missing is this:
Quote
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.
1136  Economy / Scam Accusations / Re: Rollin.io is a scam !/? on: January 07, 2016, 05:54:12 AM
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. Smiley
1137  Economy / Gambling discussion / Re: "Provably fair" question on: January 06, 2016, 07:10:20 PM
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.
1138  Economy / Gambling discussion / Re: "Provably fair" question on: January 06, 2016, 07:00:14 PM
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.
1139  Economy / Gambling discussion / Re: "Provably fair" question on: January 06, 2016, 06:54:33 PM
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.txt
http://luckyb.it/secret-key-hashes.txt
So, 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.
1140  Economy / Games and rounds / Re: [ROLLIN.IO] Rollin 2016 New Year // Contests & Giveaways!! / CLOSED. on: January 06, 2016, 06:07:19 PM
10 mBTC claimed by dfaassen (formerly TheRealSP).

That was the last winner to be paid. Smiley
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