Bitcoin Forum

Hi everyone! Introducing simple lottery http://btc-fortune.com

Lottery is very simple!

* Enter your name or nick or whatever and your bitcoin purse to receive a prize
* Press tha Red Button
* Send your bet from 0.1 to 1 BTC to the specified address
* You will get a ticket with a number from 1 to 777 after 1 payment confirmation

You win 160% 180% of a bet: if you get ticket with even number (2,56,100,etc)
You get JackPot: if you get a ticket with number 777

If jackpot is less than 1 BTC, you will play round without jackpot, but still have a 50% chance to win 180% of a bet. Jackpot will be always greater than 1 BTC in any way! When someone will take it, system automatically set Jackpot > 1 BTC (from my funds).

Game is totally interactive, powered by Ajax. You can see incoming bets, tickets and payout history in realtime.

Any questions please send to support@btc-fortune.com or PM me.

And good luck!

----- UPDATE: 30 Aug 2011:

Starting Jackpot amount is now assigned automatically when new round starts, and is growing as much you doing bets.

----- UPDATE: 11 Jan 2012:

Earn free bitcoins by retweeting my advertising campaign:

http://www.feedzebirds.com/4r2ln

Username "JackpotISMine" rolled a 776 on his first try and stopped?

Something looks rigged about that, not sure what! A shill perhaps?!

Wow, he was so close...

And no, no rigging, just getting /dev/urandom bytes from PHP :)

After having a long run with PRNGs and gambling, I suggest using a TRNG like random.org.

You can snatch random numbers from: http://www.random.org/integers/?num=1&min=1&max=100&col=1&base=10&format=plain

Anyways, seems very similar to betcoin.eu except the chances on yours are worse, also does it payout 160% winners from the jackpot or is there a seperate bank account then only a certain amount gets entered into the jackpot?

Okay, random.org library is on the way. I thought about it. Currently using /dev/urandom source.

Jackpot is an odd number, so it can't win 160%. Jackpot is a Jackpot. You can send any bet (0.1 through 1), and if you take 777, you will be paid with full current jackpot bank. So because "no jackpot" rounds processed when jackpot bank is lower than max bet.

Jackpot has a separate "untochable" account, where ##% of any valid incoming transaction is added each time.

Ivalid bets (out of 0.1-1 range) are paid back without getting tickets.

What i was asking is if you had a separate account for betting bank and jackpot.

Sure.

Bet bank initialized with tens of bitcoins to ensure everyone can win if they win. Even if payout is higher than bet bank, lottery transaction can be processed in hand mode later, when i add some funds to bet bank.

Jackpot has also separate bank.

I see, I also run a similar game and it is probably the most popular of the three, http://berlin.ifixshit.net/index.php?page=commands
!roll is the command for the game.
The only problem I have run into is the occasional extreme win streak destroys the bank

So if I bet 1 and I won, I would get back 1.6?

There is no sense in all of this if you dont

The house advantage (http://en.wikipedia.org/wiki/House_advantage#House_advantage) on this is nearly 20% (19.97).  Unless the jackpot is a gigantic multiple of your bet, this game is not worth playing at all.

gigantic multiple of bet can not be reached with chance to take it 1/777. And what was the formula you computed this value?

Look, its just a lottery. For a house advantages you may visit Nevada state with good house advantage cities in it.

I'm having a riot with this game... Good job on it. Whoever developed it did a great job!

Jackpot is more than 3 BTC now. Make your bets!

The special offer week has been ended :) Keep for updates.

Due to active player, we have Jackpot over 10 BTC now!

I call foul. I just purchased 500+ tickets, and now payouts aren't happening anymore, and my current ticket purchases waiting for confirmation (3 confirmations now) are apparently being dripped into the stream, at a lower than purchased rate of return - 0.16 vs 0.20 that I bought in for.

I am calling shenanigans.

Shenanigans!

Regards,
Jonathan

Well, the bitcoin network refusing spam transactions from you. They will be confirmed in any way in some time.

Thank you for your game. I'll send you a personal prize 5 BTC, So you will really double your investments.

Oh.. Is it considered spam? Well.. That's inconvenient.

So they aren't confirming even though I paid tx fees?

These are good things to know about Bitcoin. I figured I'd try to break your game just like people broke mine. Lol.

Nope. I see your transactions coming and coming unconfirmed. Is this was a ddos attack? lol :) Anyway this was fun. I'll return you all of this when it will end up.

If you try to do this with two different wallets, you will see most transactions unconfirmed during long period of time.

I'm a pretty good authority to try to break stuff. I actually laughed out loud when I saw the web page change and the 200% offer removed.

I was wondering how long it would take for someone to notice ;)

-jonathan

You didnt break anything, you just get jackpot up to 10 :) They are still comming... fuck ))

Yay I got 0.16 on my 0.1 investment.

You'll have to tell us how you did, Jonathan!

How I did what? Purchase 500+ lottery tickets, one after the other after the other? XD

There's advantages to having SSH access to a bitcoin server...

-Jonathan

Ok, I just bought another 100+ tickets..

LOL

How you did in terms of luck! How much did you spend and how much did you get back? :D

Also, at this point it is statistically advantageous to just send as many 0.1 bets as you can in hopes of getting ticket 777. You will likely recoup any losses. :D

https://docs.google.com/spreadsheet/pub?key=0AjEKMLRLs2mOdHJuUXFrNjlaRkNuUUw2OENhSDhGWXc&output=html (https://docs.google.com/spreadsheet/pub?key=0AjEKMLRLs2mOdHJuUXFrNjlaRkNuUUw2OENhSDhGWXc&output=html)

Okay, Jonathan.

All transactions before my promise @2011-08-29 10:47:04 are being refunded:

514 bets in
51.4 BTC IN
254 payouts
49.36 BTC OUT

Difference is 2.04 BTC - because I changed % of payout back to 160. So Im sending them. These are yours.

5 BTC price for your adjective mind are somewhere here (http://blockexplorer.com/address/1MsEaVgMysasczzEje56utig2iJfasqikP). lol

All other tickets processed under normal conditions.

Thank you for your game :)

Awe.. Let's let it run through. I want to see a Jackpot happen! I'll send them back your way. I'm just testing the odds on the game at this point.

You saw the spreadsheet, right?

-Jonathan

Yeah :) I want to see jackpot too :) Previous one I saw in tests only

And please... Dont send more than 1500 bets at once ))) Otherwise my bitcoin client will shoot itself in the head

You don't have the number of tickets remaining anywhere on the site, do you?

-Jon

You have to see in your session all of my client catched from you. Actually I see them on my admin panel. About 230 for now waiting for confirms.

You see, Cory transactions processing faster by network. Because he sent few bets. I don't know why bitcoin network refusing processing all of yours in single block. I noticed this while tested this lottery. May be it is internal dos protection.

Heh, well I'd expect some wonky things to happen when you're dealing with hundreds of small payments. ;)

I didn't think there were "tickets"... Isn't a random number generated for for each bid, allowing duplication?

I didn't say anything about duplication. This is just random number, allowing duplication. Right. You can get JP either taking few tickets or you will not see it even taking 1000. It is just random.

Interesting..

So what are the odds of 230 / 777 hitting the jackpot? Is it roughly 30%?

-Jonathan

This is the simulation of 10 attempts to take jackpot:

These are another 10

Cool.

Well, here's the final stats.

Dead heat!

https://docs.google.com/spreadsheet/ccc?key=0AjEKMLRLs2mOdHJuUXFrNjlaRkNuUUw2OENhSDhGWXc#gid=0 (https://docs.google.com/spreadsheet/ccc?key=0AjEKMLRLs2mOdHJuUXFrNjlaRkNuUUw2OENhSDhGWXc#gid=0)

Sorry I busted your even money promotion!

That was fun!

Regards,
Jonathan

Lol Jonathan. I thought I was going to have a chance to double my money. :P

Thanks for posting the stats! :D

Jonathan stats:


That was really cool!  8)

As the bank gets more and more money, you should allow higher and higher bets. :)

This gives me a great idea for my next project. I'll try not to steal your thunder.

WOW!

There is a Jackpot siege

Alright. The second promo try ;)

Win percentage is 180%. 5% goes to Jackpot, 5% comission. The house advantage of this game dropped down to ~10% (from 20%)!!! Your chance to get get rich rises as  JackPot bank growing!

And this offer is not limited in time.

right, change it from 1 - 777 to 1 - 2000. Where the same random number cant be chosen twice, odds get bigger, more people will play.

perfect

Woah!! Ambush won the jackpot!!!

The deposit RIGHT after mine! Congratulations! :D

FUCK YEAH!

http://img14.imageshack.us/img14/7042/bitcoin5.jpg (http://imageshack.us/photo/my-images/14/bitcoin5.jpg/)

http://blockexplorer.com/tx/670b8ae7828dfb9e8156589ce1621744f1ae4f97daccfd570c9e286241cd8db6

Congrats mate!

Wow nice one.. so whos going to want to pay now?

Who is the hero?

It's a friend of mine. We were calculating probabilities of winning last night, and he decided to play. Lol.

His words: "dude, ticket 777 DOES exist! muwahahahahahaha"

New round!

Win percent is the same - 180%.

Starting JackPot is 2.53 BTC! Yes, you're right, its from my wallet. And its growing while you make bets!

So the show must go on!

Site updated! The winners table became "latest games" table with a full list of latest games win/lost/jackpot )

Jackpot is above 4BTC

is the site broken?
i've sent bets, but they're not showing  :(

Sorry, bitcoin client went down. I set it up, all pending transactions have been processed.

> 6 BTC Jackpot

so this is a lottery that reuses ticket numbers in the same round then  :-\

More like a flip game. Even number you win. Odd number you lose.

However, if you get number 777 you win the jackpot.

Jackpot 8.4162 BTC taken by someone with nickname  "YES". Congratulations!

http://img193.imageshack.us/img193/9607/bitcoin7.jpg (http://imageshack.us/photo/my-images/193/bitcoin7.jpg/)

up

Jackpot is > 5 BTC!

Earn free bitcoins by retweeting my advertising campaign:

http://www.feedzebirds.com/4r2ln

Hell yeah, just hit the Jackpot!

Spent 2.3 Btc
Won 5.7

Not too bad :)

Congrats, dude ) I had to start worry that all mathematicals went away from this forum  :) Its okay now

http://img684.imageshack.us/img684/8470/cas6.jpg

Any chance you might remove duplicate numbers per round ?

In this case jackpot will be always tiny and will not grow above 3-5 BTC. What point in that?

I do appologize for technicial problems on this site.

My bitcoind version became too old and started to show unreasonable data.

I closed site until i'll do update and fix all errors.

All pending transactions will be processed after update, they will not be be lost.