Bitcoin Forum

Lost 10 times in a row. That's not very likely, so I'm not sure how fair this is.

Nope, never won once but I'm not trying anymore. Lost 250 BTC lol

Lost 250 BTC lol

Ugh, that was dumb of me. :(

$ch = curl_init('http://www.random.org/integers/?num=1&min=1&max=100&col=1&base=10&format=plain&rnd=new');
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1) ;
$randnum = trim(curl_exec($ch));

if ($randnum>51) {
	add_to_log('Player WINS');
	$result='bitcoin';
} else {
	add_to_log('Player LOSES');
	$result='carrot';
}

Lost 10 times in a row. That's not very likely, so I'm not sure how fair this is.

Personally, I'm done with gambling at sites which don't give me PROVE that they don't rip me off.

Were you ID 2?

That user looks like it's just hit refresh over and over again instead of starting each game from the start.

Wait, does that somehow let you play with the same result over and over?

No, it doesn't... refreshing is pointless... I can however see it in the logs.
It's the only thing I can see that even remotely looks like 10 losses in a row.

...I'll send you back 240...

240 sent...

Deposit addresses are definitely for one-time use. You should be getting a new one each time you play.

I'll write a warning about that on the site...

Not seeing the 240 in my client yet

The payment is showing in my client as 0/offline? -240.00

It'll get to you eventually.

That's strange... Wonder if that is a problem on my end or yours. I do have an abnormally low number of connections at the moment (only 8, I usually have like 30+). Ah well, it'll make it through as you say. Never seen that message before though. Anyone more knowledgeable than I care to share what it means?

EDIT: Never mind... Did some Googling and figured out what it was. I think it's an issue on your end doood, but it should resolve itself eventually.

EDIT 2: Showing in my client as 0/unconfirmed... All should be well. Thanks again doood. bitcoin = best community ever.

...another flip-a-coin like game (http://bitcointalk.org/index.php?topic=3862.0), it could even be the some guy with a new forum account...

Thats basically a good idea, but I think it's possible to cheat:
As far as I know, it's possible (with some effort) to undo the spendings with 0 confirmations (I forgot about the name of that attack and how it's done in detail). You delay the payout of winnings but people could still cheat you by undoing the payments for the games they lost.

I don't find the source (I read about it somewhere here in the forum) but I think it works like this:
The attacker has to mine for a valid block for this. When he found one, he must not yet submit it to the network. He sends you the coins and plays on your site. When he won, he's fine, no need to perform the attack (wouldn't be possible as you delay the payouts). When he lost, he's using the block he already found and adds a transaction to it to send the coins you currently 'have' with 0 confirmations to another address (one controlled by the attacker). He then submits the block to the net. Your coins are gone.

This of course requires that nobody else finds a block while the attack is performed, but there's a very good propability for this to not happen (I assume playing a bet on your site doesn't require much time, maybe not even a minute).

You can't use coins from a generate tx for 120 blocks.

I don't find the source (I read about it somewhere here in the forum) but I think it works like this:
The attacker has to mine for a valid block for this. When he found one, he must not yet submit it to the network. He sends you the coins and plays on your site. When he won, he's fine, no need to perform the attack (wouldn't be possible as you delay the payouts). When he lost, he's using the block he already found and adds a transaction to it to send the coins you currently 'have' with 0 confirmations to another address (one controlled by the attacker). He then submits the block to the net. Your coins are gone.

This of course requires that nobody else finds a block while the attack is performed, but there's a very good propability for this to not happen (I assume playing a bet on your site doesn't require much time, maybe not even a minute).

I know but thats not necessary, the coins used to play aren't those which are generated by the found block, they're just some coins. The block is only used to undo the transaction used to send coins to the game owner. This works because the bet will be already played before somebody else can calculate the transaction into the blockchain (at least most of the times).

edit: typos removed

Sent a tx at 18:32 for 20 bitcents, and won, my tx has 4 confirmations, and I haven't received my 40 bitcents.
Sent a tx at 18:41 for 19 bitcents, and won, my tx has 0 confirmations, and the tx to me for 38 bitcents has 0 confirmations, but is listed.

What happened in the first bet?

Also, I suggest changing the form from a POST to a GET, so that if I accidentally close the tab, I can get back to it with the id saved in my history. (Lost some coins this way earlier.)

EDIT: The first one now has 6 transactions. Still none received.

It was either:

12jLuwWWXyv3Ygo6so75iP1PKMHnbP9XfB
-or-
1AuMiqxnEJ7GrWLXsLtGCTbGTRaFTSmgoR

However, if I'm wrong, my apologies.

Both of those show in Block Explorer as being for payments of 0.19 btc:

0.19   http://blockexplorer.com/address/12jLuwWWXyv3Ygo6so75iP1PKMHnbP9XfB
0.19   http://blockexplorer.com/address/1AuMiqxnEJ7GrWLXsLtGCTbGTRaFTSmgoR

The first one won 0.38 and it was paid out on schedule:
http://blockexplorer.com/tx/95628ba28ee95cf4bd5dc839c37889ec72f28d0364c4879112bf84f21f5b49fc#o0

I really enjoy Bitcoin Toss and would vouch for it to anyone, I've had great success.

Also, I suggest changing the form from a POST to a GET, so that if I accidentally close the tab, I can get back to it with the id saved in my history. (Lost some coins this way earlier.)

I did not receive my winnings - I sent coins to 189MjkPqX6N89SUTYvPPT12mbyggGmsPL9 and won, but I did not receive the reward yet. There have been 8 confirmations so far on this transaction...

Edit: Nevermind, I got it, although it took about an hour (and 15 confirmations since I placed the bet).

I ran well and martingaled starting at .1 so I'd have quite a few flips w/out busting a large chunk of money. Ran it up to a few BC's. Very addicting, even though statistically i'll eventually bust my roll.

i lost 3 times in a row wtf 49% my ass

I've had nothing but GOOD luck with this, wayyy better than Double Trouble.

My one issue however is that recently payments have been taking exceedingly long times to get accepted in a block (like 24 hours.) Anything you can do about this?

~lulz

I just posted about some of my own personal transactions taking 5 hours to get confirmed, so I wouldn't be surprised to hear it's happening between that server and other people too.

I found this list, which shows all the transactions that are waiting to be included in a block: http://bitcoincharts.com/bitcoin/

I could set it to pay a 0.01 transaction fee, which would be inevitable at some point in the future anyway.

One other thing I might suggest, doood, would be reducing the number of confirmations required before payment is sent out. I haven't seen any double spending, and it's becoming less and less viable by the day (it really isn't viable at all anymore,) by the amount of miners. It's just annoying when I win a bunch of bitcoins, want to bet with them, and can't because I'm waiting for my payment.

Thanks,
lulz

It only requires 1 confirmation of entry, then the next run of the updater script will send out the payment. The updater script runs every 10 minutes, so after your entry fee has 1 confirmation, you might have to wait up to an extra 9:59 after that.

Perhaps to get around your issue I could just give you a balance on site, which you could then continue playing with, and then when you're done allow you to withdraw them.

And if you do take the route of having a balance on the site, you should make it optional to have an account. One beautiful thing about it is just having to enter a Bitcoin address and be able to play.

I think something is very wrong here..
http://gyazo.com/d75b7c28b8a689265d26e60f23e845af.png

Red = Bit toss (11 hours old)
Blue = From my other wallet. (30 min old)

So as you see they refuse to be confirmed so I can't get access to what I've won.. (over 0.8)

Dood, that refund was incredibly generous and great customer service.  I'm giving you a +1 rating because I want to support good businessmen like you.

Thanks TS, it's appreciated.

Hello doood,

        I have been using your site, bitcointoss.com, for a short while and would like to make a request.  I feel a little backstory is in order so please bare with me.
   Recently I have dropped out of my 3rd year university engineering program due do to a dramatic worsening of my problems with anxiety and depression. I have moved back home and am now attending outpatient programs at my local hospital. While I have improved since returning home I still find myself unable to function properly. This has left me with a lot of free time. Recently I discovered bitcoin and found myself seeing promise in this novel form of currency. Due to my belief in its future succuss I made the decision to invest some of my money in it in the hopes that the value would rise over time.  Originally my plan was to simply let the money sit and accumuulate value. However recently I found your site, researched some basic betting stratagies and decided that your site was the ticket to easy money. Prior to recently I doubted the existance of psychological addiction and questioned the intellagance of those who claimed to be afflicted. Over the past week however I have seen how sorely wrong I was. I am truely amazed how quickly I surcome to compulsive gambling habits. In total I think I have lost around 80btc, nearly the entirety of my investment and have gone so far as to take out a btc loan in order to attempt to win my money back, most of which is lost.  I am terriably embarrased by my behavior and can hardly believe how far I have travelled down this road in such a small amount of time. I have now vowed to myself to never consider gambling as a way of earning money ever again.
   The reason I have written to you is to ask you to return some percentage of my losses. I in no way blame you or your website for what was purely my own stupidity and can see how it can be a lot of fun when used responsably and in moderation. Even if you don't return a single bitcent I'm sure that the value of the lesson I've learned far outweighs the value of my losses. If you do approve my request my address is 1DSGihdQyu9geRrm8ZDcZAnaVJS2d3CWdg and I have been mostly playing with the referal numbers 1655, 1755, 1927 and 2370.
   Thank-you for taking the time to read this letter.

Sincerly,
hackysackwizard

Hi there,

I do truly believe your above statement and hence would be doing you an injustice if I were to refund any money.

I'm sure it's an experience you won't easily forget.

Keep safe and try to see the bright side of life.

Cheers.

Hello doood,

  While I respect your decision I really wish you would reconsider. Seeing your generosity towards sat0pi on the forums by returning most of his lost 250btc I was optimistic that you would be sympathetic to my situation. As an unemployed student I don't have much to spend on ventures such as bitcoin and I am now forced to invest more in order to repay my loan. I am well aware that this burden is entirely self inflicted. Having some of my investment refunded would save from the crippling anxiety of having this new burden in addition to my existing mental health issues.  As it is I am already horribly embarrassed to be making this plea. I sincerely wish you would reconsider my request. Either way, thanks for your time.

hackysackwizard

Hi h,

If you have read that thread then you would have seen this post:

https://www.bitcoin.org/smf/index.php?topic=6526.msg95638#msg95638


It would be extremely foolish of me to go back on my word.

I do hope you can put this experience behind you.

d

My dearest doood,


Thanks man, so glad I have you to look out for me.  Glad you saved me from the horrible injustice of being shown a little compassion.


...says the guy whose 70btc richer.  I'm sure I'd be seeing the bright side of life if that dropped into my lap too.

You are truly without the slightest bit of sympathy you greedy bastard.

Get fucked,
hackysackwizard

The part that cracked me up was that he "researched basic betting strategies". 

Yes that bit's good too.

The part that cracked me up is how he equates 30 hours of non-stop photoshop work and php/ajax coding with 'dropped into my lap'.

Not to mention the forethought to buy the domain, get it hosted, blah blah blah.

It's a business venture, not free money.

i'm pretty sure your referrals pay before any confirmations, just keep that in mind.

Well, I guess you guys have shown me what's what.  Now that my personal laundry is being aired maybe I should post my address so you can all come and kick me in the nuts too.

Hi, that's incorrect, but thank you. The referral fee gets paid after 1 confirmation of the entry, in the same code block that pays out winnings.

*looks into code to make sure*   ...yep

So I bet 3, tried to flip and it hasn't loaded yet....

2 Bets which I was told won, but I never received my payment. I have already messaged you the details dood.

I've sent 0.55 BTC to 1PD1mi5qjvjpYZXekKXhikG8xHf8GMvZVY but my browser crashed before I was able to play the bet. Can you plz return the coins? Thx

The part that cracked me up was that he "researched basic betting strategies".  The hell?  It's a COIN TOSS, with just under a 50% chance of getting the right answer.  What kind of strategies can you possibly have? 

round	     bet	     sum	  profit	  p(lose)

 1:	    0.01	    0.01	    0.01	   51.00%
 2:	    0.03	    0.04	    0.02	   26.01%
 3:	    0.09	    0.13	    0.05	   13.27%
 4:	    0.27	    0.40	    0.14	    6.77%
 5:	    0.81	    1.21	    0.41	    3.45%
 6:	    2.43	    3.64	    1.22	    1.76%
 7:	    7.29	   10.93	    3.65	    0.90%
 8:	   21.87	   32.80	   10.94	    0.46%
 9:	   65.61	   98.41	   32.81	    0.23%
10:	  196.83	  295.24	   98.42	    0.12%
11:	  590.49	  885.73	  295.25	    0.06%

Have I overlooked something?

You've over-looked the fact that past results do not change the probabilities on the next turn.

The only difference is that you have an 'investment' from the past but I'd say that investment is mostly emotional.

I do not have an investment from the past, not even an emotional one.  What I do have, is a strategy to try and win back — in the present — an amount equal to my losses, and then some.

(I first sent the request by PM but go no answer so far.)

when 100 BTC was added, this *increased* the possible payout pool, which in turn made *more* btc available to winners, which have subsequently won those coins. I don't know how to make it any clearer, I don't physically have your extra 100 BTC.