Bitcoin Forum

Hello:

I'm developing a bitcoin poker slot machine.
It's fully functional right now, but it just needs graphic design.
If you are interested in working at design, just tell me.

The site offers one of the fastest and simplest way to play: you just need to enter a bitcoin address to receive your prizes and you can start playing: no need to register not entering an email address. You can enter at any time with the associated address and cash out instantly when you want.

pokermania.ddns.net

If you are busy with development maybe good idea making it fully working on mobile devices. Some forget to work on a full functional version on all devices.

It works on mobile too, actually.

Nice and simple... Altough i would recommand you to reg a domain name if you're serious about this venture, nobody is going to trust a ddns.net domain ;)

Thank you. You are right. But it's under development yet, not intended to be public.

I expect to give it a good design before, that's why I'm looking for a designer who want to work on it.

It looks good but just make sure you make it provably fair if you're asking people to deposit and play because that's the first thing you're going to get asked for when you launch it. GL anyway.

That's a very important point: I was thinking about several methods to give confidence to people, mainly this ones:

1. cryptographic proof before dealing cards: send an encrypted zip with the cards before the hand, and send the key to decrypt it after it.
2. code audits (allow methods to anyone could make an auditory on the code that gives the cards)
3. offer means to do an output audit (you can just register the cards you receive and then check if they are evenly distributed).

None of the methods seems to be enough to assure that the machine is not cheating by any means.


To choose the cards, the system is using the server's random generator (linux in this case), through a python script that calls it. The python code is SystemRandom() from the module random: https://docs.python.org/2/library/random.html#random.SystemRandom

In other hand, I wouldn't need to cheat at all, becuase the nature of statistics says that house ever wins at the large scale. Players can take advantage of lucky strikes, if they manage their bets carefully, it's possible to take a profit.

I plan to offer other kinds of backings to help to create confidence in people. I will put my data so they can contatme directly too.

Well, in fact, it's just accesible through a navigator by the moment.

It's full functional right now, but it needs some adjusts and mainly, a good hand of design.

I could port it with phonegap to make it a mobile application, but right now it works in Chrome.

Nice project, will definitely keep an eye on that :)

Well, I've done a basic redesign and a change of domain and name. I changed that ugly blue beckground for a clean white one.

Now the link is:

http://pokerforbitcoins.ddns.net (http://pokerforbitcoins.ddns.net)

I'm still looking for designers to give it a final look.

When I could reunite some funds, I will:

- buy a new domain name
- buy a certificate to make it run through https
- set a system to give some free credits to the first ones that try it (retroactively too).

Hope that you like it.

I'm a front end developer and my partner is a graphic designer so i'm sure we'd be able to knock something up for you, Whats in it for us?  ;D

I answered you by private. You tell me what you want for you. I could pay in fiat or in bitcoin when I get some money, as well as in shares.

You need to go to the services section and find a thread open by a guy named BSM (I'm too lazy to do that at the moment.)He had a slot machine which he designed and developed and it was actually good looking.He is ready for jobs these days why not message him and ask for the design ? Since he is quite experienced and has done the same before you could expect much more professional work from him.

Thank you for the reference, Patatas. I'll try to contact him.

hmm it really doesnt look that nice  :-\
you really need a frontend developer like me  ;D ;D

I need a designer, not exactly a developer. The site is almost fully developed.

That's a great idea and an endeavour that can work in favor of bitcoin as well :)
I hope that all goes well with your project!

Have a look on my portfolio thread here on this forum (link is on my profile) in case your still looking. Some of my works are there (however have this in mind that I only know purely designing and know nothing in regards to coding + except some basic html stuff). My rates are there as well.

I can fully design it for you and fund you as you said you needed funding.

I really like this project =D

I agree. Especially anything that has to do with money. You should also be using SSL as well.

Which are the prizes?
Prizes list

The prizes will be multiplied by the coins you bet in each hand.

Pair: 0
Two pair: 2
Three of a kind: 3
Full house: 5
Straight: 6
Flush: 7
Four of a kind: 10
Straight flush: 20

could you please tell us the HE for this prize list?

Yes, as I said, I plan to use SSL and a registered domain soon.

The interesting thing about it is that nobody can stole your credits even if they interfer your connection (MIM). Worst scenario would be that someone consume your credits with bad bets, but there is no benefit for him to interfer a communication to do that job.


EDIT: added this explanation:

Each input address is tied to an output address that can't be modified, that's a measure of security so that nobody can redirect your credits.

What is HE? I took the list from a game I played some decades ago. If you suggest any change, I would be open to hear.

I was thinking to offer a proof of fairness, but I'd like to find a simpler system. The one I think of would be a seed formed by two parts: a half created in the server at the beginning of each hand, available to the player in an encrypted zip to download before the hand, and the other part created in the player's machine with javasript, allowing the user to change it manually. After the hand, the system would release the key to decrypt the zip. This way, both the player and the system are protected against manually selected seeds.

To make the proof, the player should reunite the decrypted half of seed with the player-side seed, and then try the generation of cards in a pyhton shell. A problem is that the random generator is system-based, so it probably won't give the same result in different systems, so I should find a more universal method. Then, I should give players the code to generate the cards and a table to find which card corresponds to each order number.

The system is too intrincated, but it's the only one I found to make a reliable proof.

Other systems are external audits that anyone can perform, or find a way to allow anyone to audit the code to verify that it's using a true random generator.

 

I can barely understand your English. Perhaps brush up before looking for work on this forum.

Don't get nervous. I'm not a big competitor for you: you have a lot of work made at your casino. Congratulations.

so do you want my help?

I'm still studyng all the offerings, thank you. I'll keep in touch with you by e-mail.

Still didn't choose a designer. Sorry for the delay, these are very busy days to me.

I know that some people consider difficult to win, but there's a winner strategy that allows to win many games. Of course it's not a warranty, but it increases the chances to win.

The main tactic is: bet low. At lower bets, more chances to win. Poeple often get anxious and bet a lot in one hand, well, that way there're more chances to lose than to win, so they can't complain ;). If you maintain cold blood, there will be more chances to win. You could raise your bet just once every a while, and then go back to 1, no matter if you win or lose.

reading this people get the feeling that you know what you are talking about. please explain us what the HE of this game is and why lower bets have more chances to win. thank you

I don't know what do you mean with HE.

Why lower bets have more chances to win? Very simple: because at lower bets you have more tries, and more tries means more chances.

If you have 20 credits and you bet 10 each time, you will have 2 chances. If you bet 1 coin, you will have 20 chances (plus the coins you win in some of them).

in general all casino games have an HE = House Edge

how can someone offer a slot machine without knowing the meaning of HE?

and your explanation why lower bets have more chances to win is just a joke and made me laugh.

Well, the issue of lower bets is just common sense, but people often bet a lot in each hand, which usually makes them lose soon.

I didn't know the meaning of HE, but I do carefully tested it without knowing the word.

First of all, the list of prizes was taken from a poker slot machine I played at some years ago.

Second, I tested my game with more than 4000 hands, and the average was that the house retains a 30% of the whole bets.

(EDIT / CORRECTION: the HE varies from 40% to 5% according to player strategy. 30% was the average through 4000 plays, mostly blind ones, but I found runs from 40% to 5%. In many short runs, it reaches from -%20 to -%80 for the house, it is, a gain from 20% to 80% for the player)

Have you considered implementing it into Moneypot.com?

Moneypot takes care of the bankroll, provable fairness, and transfers. 

would this kind of Video Poker work with Moneypot API? as far as I understood Ryan's explanation Video Poker would not work with Moneypot API.

did Moneypot change the API for those games?

Depends on how he'd like to set it up.

I know there's already a video poker game on there (https://www.vegascasinobits.com/videopoker).  So it is possible.

did you try his game? http://pokerforbitcoins.ddns.net (http://pokerforbitcoins.ddns.net)
if yes lets assume he wants to set it up like a regular video poker game as he is providing it.

could he offer this kind of game with Moneypot?

Well, I suppose I could integrate my game with Moneypot. But I actually have a system for bankroll and transfers and I could make a provably fair system too.

There's a different concept too: the idea of pokerforbitcoins is that you don't need to register or login or nothing. You just enter a bitcoin address to collect your prizes and start playing. I could also offer my system for others who want to develop their own front-end and make use of this system for managing the coins and the cards. I just need to develop a simple provably fair system. I'm thinking on a secret key renewed each 5 minutes and a hash from the utc time, so anybody could check the origin of the choosen cards.

CORRECTION about the HE.

The HE varies from 40% to 1% according to player strategy. 30% was the average through 4000 plays, mostly blind ones, but I found individual runs from 50% to 1%. 50% with the worse strategies and 1% with the better ones (plus some lucky strikes may be).

In many short runs, it reaches from -%20 to -%100 for the house, it is, a gain from 20% to 100% for the player.

Players have three main tools to make a strategy: 1. selection criteria for holding cards, 2. bet control (how much low and high bets they do) and 3. moment of withdrawal (if you don't withdraw when you are winning, it's possible that you lose you gains).

Actually, he didn't design it. He got the script from a site.

http://slotmachinescript.com/

I use the same script, I've just modified it a lot.

@OP

Very nice idea, like it a lot.

I did not see a video poker on the site. did I miss it?

It's a slot poker actually, it's stated in the title :)


@OP
Don't pay attention, lol. People who use "language barrier" attacks are just jealous they can't do what you did there ;)

Wish you good luck with your original concept. You deserve to succeed.

would you mind to explain the difference of a slot poker and video poker? the OP does not know the HE of his machine do you know? thank you

I love to learn new stuff :)

I'm not a gambler myself, so I don't even know what "HE" means to be honest.

I assume the difference can be understood from the words. "Slot", slots spin. "Video poker" doesn't have that spinning effects slots have.

Not sure to be honest, but that's what I understand. Please correct me if I'm wrong. We're both on the same boat, lol

please go to OPs site http://pokerforbitcoins.ddns.net (http://pokerforbitcoins.ddns.net)

I don't see a slot machine but what I see is a video poker game and I am asked to hold and get dealed new cards before the decision is made if I won or lost the hand

HE = House Edge = the % of an house advantage

Oh, then, I know what "HE" means, heh.

Maybe he visualized it as a slot machine which deals the cards and hasn't implemented that function yet?

Thank you for your words, mexicantarget.

Elm: it's true that I didn't know the term HE, but I did carefully check that variable: against different number of samples, against different player strategies, to assure that the house won't lose everything and at the time assure players that they will win in many cases.

The compromise is not easy: if I let normal players to win a lot, then experienced players would ruin me. But if I protect too much against experienced playhers, then normal player will get bored.

To be honest, I don't have many experience in this area. I took the prizes scheme from a machine I played many decades ago. I really enjoyed a lot that machine (it was in a hotel in Buzios, Brazil, perhaps somebody else knew it).

Then, as I grown nerd, I used to replicate that program in every language I learned, just as an exercise to learn languages. I made that same poker in Z80 Assembler, in Basic, in C++, and now in Python + HTML + CSS + Javascript.

Back then, Internet and Bitcoin didn't existed at all.

It was a few days ago that I realized that both internet and bitcoind offered a new environment for this. It was a little late, as I see that there are a lot of competition there.

When I first developed this game, I didn't know about HE but I had confidence in that the prizes scheme of that machine was well designed. And I tested against 4000 cases.

I didn't knew the concept of provably fair neither, but I've intued that it was important to develop something like that just to foster the confidence that the anonimity of internet would make difficult to make, and I even thought about a cryptographic proof. I think the concepto is just a little overvaluated and overdeveloped right now. After all, in those times when I knew the machine, nobody talk about probably fair nor about HE: we just played and sometimes we won and that was enough.

Times changed, I know. So I want to develop a provably fair test that were much simpler than existent ones. Same way I developed an authentication system many times simpler than the actual ones: you just have to enter your bitcoin address and you're in. That's a security system in it, because nobody can stole you anything (as the withdrawal address will be ever yours because it's impossible to change). That's why is not a must to make it go through a SSL connection (which I will do anyway when I had the funds).

This game was developed from a completely fresh view on it, trying to get advantage of tools that this technologies has in them (like bitcoin, that is an authentication system itself), to make it more simple than other systems.


EDIT: I just want to add: I may not know a lot of used terms about this, but I thought and tested every of the aspects in depth. While it's working well, it's still in a developing stage now, and I plan to add many other features soon.

To put my cents on the debate around the title:

It was thought as a video poker that resembles a slot machine. I dind't knw the term video poker before. ;)

It's actually called "slot" poker in many European countries. Or simply "Slots". (Yes, the video poker itself it's called slots.)

anyway video poker is a different game compared to a slot machine game. it is nice to see that you
are working hard to get this done. chapeau!

as I now understand you did not take the script that mexicantarget mentioned?

no, lol. I was talking about another guy. Check the message I quoted, it's about that BSM guy..
Read carefully. BSM bought that script and edited it.

sorry I misunderstood your posting. do you offer a video poker?

Yes, I didn't use any script. I reinvented the whole wheel from scratch ;)

mexicantarget was referring to the designer that offered to work for it.

Not sure if you're trolling, but anyway. That post.

BSM bought the script and edited it.

trolling? why should I? you mentioned in one of your postings

Actually, he didn't design it. He got the script from a site.

http://slotmachinescript.com/

I use the same script, I've just modified it a lot.

my question was if you offer a video poker on your website to your customers?

Shit, man. I totally misunderstood, apologies.

I run a faucet-casino (no deposits allowed), which uses that specific slot, but it's heavily modified. I don't have video poker, but what I have is: Plinko, slots, dice, wheel of fortune and blackjack.
You can find the link in my signature. (I am currently uploading the new site, so it's down. Check a bit later :) )

Once again, apologies.

all is fine mate :)

you have a nice game collection there and this for a faucet :) very interesting

To anyone who wants to donate BTC to my project, I'd suggest that you put some mBTC in the game and play them: (pokerforbitcoins.ddns.net (http://pokerforbitcoins.ddns.net))

So, instead a plain donation, it will be a donation with some fun plus some chances to win more than what has been donated ;)