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Topic: BitBet open beta. (Read 4193 times)

legendary
Activity: 1806
Merit: 1003
August 27, 2014, 02:03:03 PM
#29
I think the bet approver need to take note of the "close date" not too close to the event resolve date, fore example (this is a real bet on the site currently):

A bet that is: Bitcoin difficulty will fall in 2014, and close date is... 2014-12-15

This is not good, since any big bettor can just wait until the last minute to make sure difficulty will not fall, and bet big to compensate for weight.

A sensible close date should be something like 2014-10-01, so that there's 3 full months of uncertainty, and will not be unfair to the early bettors.
sr. member
Activity: 252
Merit: 250
September 24, 2013, 08:21:07 PM
#28
Ha Ha Ha  Tongue legitimate affiliate for bits, LOL
hero member
Activity: 756
Merit: 522
September 23, 2013, 01:48:04 PM
#27
Since its beginning BitBet has been tolerant of bets placed following an event that effectively ends the bet, refunding all such late wagers upon resolution. This policy was intended to be forgiving of the occasional errant bettor who might not've noticed that a currency had already traded at a certain price, that a verdict had just been read in a court case, or who had otherwise just missed a cutoff.

As users have gradually shown over time and have exemplified in the extreme today, BitBet's tolerance is taken for a chance to swindle the operators and legitimate users by spamming bets after the resolution criteria has been met.

Henceforth, and in the interest of fairness and uniformity, all wagers received, whether refunded or not, will be subject to the same 1% fee.

The FAQ will be updated presently to the same effect.
hero member
Activity: 756
Merit: 522
March 17, 2013, 03:14:35 AM
#26
BitBet FAQ updated.
hero member
Activity: 756
Merit: 522
March 05, 2013, 03:39:19 AM
#25
Quote
Under .US nexus requirements .US domains may be registered only by the following qualified entities:
Any United States citizen or resident,
Any United States entity, such as organizations or corporations,
Any foreign entity or organization with a bona fide presence in the United States

As you are located in Romania how can you possibly use a .us domain ?

I fail to find the "CANNOT BE LOCATED IN ROMANIA" clause in your quote. Why do you find thinking so difficult?
full member
Activity: 238
Merit: 100
March 02, 2013, 11:17:14 PM
#24
Quote
Under .US nexus requirements .US domains may be registered only by the following qualified entities:
Any United States citizen or resident,
Any United States entity, such as organizations or corporations,
Any foreign entity or organization with a bona fide presence in the United States

As you are located in Romania how can you possibly use a .us domain ?

sr. member
Activity: 298
Merit: 250
March 02, 2013, 07:03:39 PM
#23
(BetAmount + (LosersBtcSum / WinnersWeightedBtcSum)  * ( BetAmount *  BetWeight ) )*0.99
Thanks, it agrees perfectly. Using my notation, that would be:

Reward = 0.99 * (MY_BET + LOSERS * MY_BET*WEIGHT/Sum_all(winning_bets * WEIGHT) )

EDIT: if you change the formula, please let me know Smiley https://bitcointalksearch.org/topic/m.1576743

EDIT: so that winning bets do not lose money:
BetAmount + ((LosersBtcSum / WinnersWeightedBtcSum)  * ( BetAmount *  BetWeight ) )*0.99 or 0.98
hero member
Activity: 714
Merit: 500
Psi laju, karavani prolaze.
March 02, 2013, 06:53:07 PM
#22
(BetAmount + (LosersBtcSum / WinnersWeightedBtcSum)  * ( BetAmount *  BetWeight ) )*0.99
sr. member
Activity: 298
Merit: 250
March 02, 2013, 06:43:57 PM
#21
(There's also an FAQ.)

Quote
What is a bet's weight?
The earlier you bet the more of the total pot you will win in case your side prevails.

What formula do you actually use?

Let's say that I won a bet. I placed A bitcoins on this bet, and the total bitcoins placed on my side was A_sum. The total sum was B bitcoins (the opposite bet was C_sum = B-A_sum bitcoins), and I placed this bet at percentage of time left till end equal to T, expressed as: T= 100%=1.0 is when bet starts, and T=0%=0.0 is when bet ends.

Then what is my reward?

R(A,B,T)= ?


Explained here: https://bitcointalksearch.org/topic/m.1572084

Or in other words, the losers side is split between the winners by coin*weight from which 1% house fee is taken.


It's only explained qualitatively. I am asking about exact formula used.

For example this one formula is NOT used, even though that's what you are suggesting:

Reward = TOTAL * 0.99 * MY_BET * WEIGHT / Sum_all(winning_bets * WEIGHT)

The formula which I found to ALMOST match the results is:

Reward = TOTAL * 0.99 * MY_BET * WEIGHT^(1/3.5) / Sum_all(winning_bets * WEIGHT^(1/3.5))

Where "^(1/3.5)" means raised to power (1/3.5). This formula however becomes increasingly wrong for WEIGHT smaller than 10000.

So what is the formula?


EDIT: I found a formula which is almost correct for WEIGHT > 3000, it is:

Reward = TOTAL * 0.99 * MY_BET * SQRT(LOG(WEIGHT))*WEIGHT^(1/6.0) / Sum_all(winning_bets * SQRT(LOG(WEIGHT))*WEIGHT^(1/6.0))

But I am still asking what is the formula actually used.
hero member
Activity: 714
Merit: 500
Psi laju, karavani prolaze.
March 02, 2013, 04:56:04 PM
#20
(There's also an FAQ.)

Quote
What is a bet's weight?
The earlier you bet the more of the total pot you will win in case your side prevails.

What formula do you actually use?

Let's say that I won a bet. I placed A bitcoins on this bet, and the total bitcoins placed on my side was A_sum. The total sum was B bitcoins (the opposite bet was C_sum = B-A_sum bitcoins), and I placed this bet at percentage of time left till end equal to T, expressed as: T= 100%=1.0 is when bet starts, and T=0%=0.0 is when bet ends.

Then what is my reward?

R(A,B,T)= ?


Explained here: https://bitcointalksearch.org/topic/m.1572084

Or in other words, the losers side is split between the winners by coin*weight from which 1% house fee is taken.

EDIT: question2: how could you possibly not run bitcoind on the server, when you need to make payments back (private key is necessary for that).

The site will generate a sendmany command which is used on another computer where the funds are at. Thats why payments are not instant and take a bit to be done.
sr. member
Activity: 298
Merit: 250
March 02, 2013, 04:44:46 PM
#19
(There's also an FAQ.)

Quote
What is a bet's weight?
The earlier you bet the more of the total pot you will win in case your side prevails.

What formula do you actually use?

Let's say that I won a bet. I placed A bitcoins on this bet, and the total bitcoins placed on my side was A_sum. The total sum was B bitcoins (the opposite bet was C_sum = B-A_sum bitcoins), and I placed this bet at percentage of time left till end equal to T, expressed as: T= 100%=1.0 is when bet starts, and T=0%=0.0 is when bet ends.

Then what is my reward?

R(A,B,T)= ?


EDIT: question2: how could you possibly not run bitcoind on the server, when you need to make payments back (private key is necessary for that).
hero member
Activity: 756
Merit: 522
January 12, 2013, 03:03:58 AM
#18
http://bitbet.us

Edit: Oh you already fixed it. You're welcome  Wink

Twas not me, but:

Quote
aha the html break in certian conditions and thats it
js doesnt run
ill fix that in oneliner
there

Possibly worth pointing out that since bitbet doesn't have accounts there's not much value in an XSS exploit even if something did work.

All that aside, your find is appreciated, well done and thank you! Should you wish to bet 1 BTC on something on the house, pm me the address.
full member
Activity: 187
Merit: 100
January 11, 2013, 08:10:34 PM
#17
XSS vulnerabilities in the search function. Just saying ...

Trilema has a search function?!
http://bitbet.us

Edit: Oh you already fixed it. You're welcome  Wink
hero member
Activity: 756
Merit: 522
January 11, 2013, 08:03:26 PM
#16
XSS vulnerabilities in the search function. Just saying ...

Trilema has a search function?!
full member
Activity: 187
Merit: 100
January 11, 2013, 07:30:40 PM
#15
XSS vulnerabilities in the search function. Just saying ...
hero member
Activity: 756
Merit: 522
January 11, 2013, 07:11:41 PM
#14
I made the mistake of reading some old financial statements this week.  I guess from now on, I'll just have to make copies of them.  I thought about paying a buck for 1000 credits, but I can't find any mention anywhere of how many credits each article costs.

One. I guess it's a little odd that this should be mentioned specifically, but each read costs one credit.
sr. member
Activity: 394
Merit: 250
January 11, 2013, 05:58:56 PM
#13
You should really get the financial statements and releases marked as free articles so that people can read more than a few of them each week.

Interesting IPO, by the way.  It was pretty obvious which guys had done their math up front, but I wasn't expecting it to get anywhere near 1.03177.

I don't think anyone did. At least not as far as I know.

Anyway: Trilema allows five free reads a week. In general this should be enough for anyone to read such announcements for free (in the average month there's the MPOE statement, that's one, and possibly a couple others such as an IPO, some tech announcement, w/e). Obviously if you use those free credits to read something else you're on the hook, but it's not really proper to say you're being asked to pay for the announcements.

I made the mistake of reading some old financial statements this week.  I guess from now on, I'll just have to make copies of them.  I thought about paying a buck for 1000 credits, but I can't find any mention anywhere of how many credits each article costs.

1 per article
 I finally caved an bought some credits with my bitbet winnings.
kjj
legendary
Activity: 1302
Merit: 1026
January 11, 2013, 07:14:05 AM
#12
You should really get the financial statements and releases marked as free articles so that people can read more than a few of them each week.

Interesting IPO, by the way.  It was pretty obvious which guys had done their math up front, but I wasn't expecting it to get anywhere near 1.03177.

I don't think anyone did. At least not as far as I know.

Anyway: Trilema allows five free reads a week. In general this should be enough for anyone to read such announcements for free (in the average month there's the MPOE statement, that's one, and possibly a couple others such as an IPO, some tech announcement, w/e). Obviously if you use those free credits to read something else you're on the hook, but it's not really proper to say you're being asked to pay for the announcements.

I made the mistake of reading some old financial statements this week.  I guess from now on, I'll just have to make copies of them.  I thought about paying a buck for 1000 credits, but I can't find any mention anywhere of how many credits each article costs.
hero member
Activity: 756
Merit: 522
January 11, 2013, 03:25:48 AM
#11
You should really get the financial statements and releases marked as free articles so that people can read more than a few of them each week.

Interesting IPO, by the way.  It was pretty obvious which guys had done their math up front, but I wasn't expecting it to get anywhere near 1.03177.

I don't think anyone did. At least not as far as I know.

Anyway: Trilema allows five free reads a week. In general this should be enough for anyone to read such announcements for free (in the average month there's the MPOE statement, that's one, and possibly a couple others such as an IPO, some tech announcement, w/e). Obviously if you use those free credits to read something else you're on the hook, but it's not really proper to say you're being asked to pay for the announcements.

BitBet is like NakaBot trying to get into the established market of SatoshiDICE.

In other words, it's going to fail.

Why are you so invested in this, anyway?
kjj
legendary
Activity: 1302
Merit: 1026
January 10, 2013, 07:25:09 PM
#10
You should really get the financial statements and releases marked as free articles so that people can read more than a few of them each week.

Interesting IPO, by the way.  It was pretty obvious which guys had done their math up front, but I wasn't expecting it to get anywhere near 1.03177.
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