CoinsGainer.com - provably fair multiplayer game of chance

[jarolee]

CoinsGainer.com

CoinsGainer is a multiplayer bitcoin game of chance.

How to play:

Make a bet before the round starts and watch the multiplier grows in real time starting from x1.00. During the round you can cash out any time you want, starting from x1.01 by pressing the button "stop gain". Your payoff will be equal to bet times the current multiplier. The longer you stay in the game, the higher profit you will get. But, keep in mind, the gaining may stop at any moment. If you fail to cash out before or round result is exactly equal to x1.00, you will lose your bet.


Main Features:

• Provably fair
  Simple provably fair system (described below).

• Free faucet
  Get free faucet just after signup. Deposit is not required.

• Automatic deposits
  Deposits are credited automatically after single network confirmation.

• Instant withdrawals
  Anytime, any amount, even 1 satoshi.

• 1 satoshi is min. bet
  Play any balance, have fun.

• Flat 1% house edge
  One of the lowest house edge on the market.

• Multiple windows bets
  Multiple tabs, windows, browsers or devices allowed simultaneously within single account.

• One-click signup
  It's easy to get an account. Even email is an option.

• Bankrollers welcomed
  The most attractive conditions on the market.

• Mobile friendly
  Fully tested on a range of devices.

How provably fair works:

We have generated a secret string and get its sha256 lowercase hexadecimal hash. This hash is representing a game #25,000,000. The game #24,999,999 is represented with the sha256 lowercase hexadecimal hash from the previous game hash, and so on. In this way, all games are represented by hash chain, that excludes any intervention by it's nature.

The result of each game is calculated by simple algorithm below (Javascript, CryptoJS library required), that uses a salted game hash:

Code:

const CG_GAMES_SALT = ''; // lowercase hexadecimal hash representation of unmined bitcoin block #572,752 here
const CG_MSB_NUMBER = 52; // MSB number (https://en.wikipedia.org/wiki/Bit_numbering#Most_significant_bit)
const HEX_ENCODING = CryptoJS.enc.Hex;

// computation logic
const CG_GAME_RESULT = (gameHash) => {
    gameHash = CryptoJS.HmacSHA256(HEX_ENCODING.parse(gameHash), CG_GAMES_SALT)
        .toString(HEX_ENCODING)
        .slice(0, CG_MSB_NUMBER / 4);
    const hashResult = Math.floor(99 / (1 - parseInt(gameHash, 16) / Math.pow(2, CG_MSB_NUMBER)));
    return Math.max(hashResult / 100, 1);
};

The salt is a constant and equal to lowercase hexadecimal hash representation of unmined (at the moment of making this post) bitcoin block #572,752. This way, such salt is a proof that the hash chain was NOT chosen deliberately with unfavorable game results for the players. First game hash is: 4790d1e1b91bd559cbd228e713fa85749443c0030b0036ae6b500e82d6490630


Games fair verification tools:
Verify Online / Verify Offline / JsFiddle / GitHub

[jarolee]

Archive.fo - external archive as a proof of no cheating.
Quoting is welcomed. Thank you!

[Ailmand]

Seems like it's similar to bust-a-bit. Would like to see the game interface OP, however, ths site says the game to be launch on bitcoinblock #572,752. Can you just please show a teaser on how the game looks like.  

How much is the transaction fee for withdrawal?  Is there a minimum amount for bank rollers? Can't wait to try the game.

[joksim299]

CoinsGainer.com

CoinsGainer is a multiplayer bitcoin game of chance.

How to play:

Make a bet before the round starts and watch the multiplier grows in real time starting from x1.00. During the round you can cash out any time you want, starting from x1.01 by pressing the button "stop gain". Your payoff will be equal to bet times the current multiplier. The longer you stay in the game, the higher profit you will get. But, keep in mind, the gaining may stop at any moment. If you fail to cash out before or round result is exactly equal to x1.00, you will lose your bet.


Main Features:

• Provably fair
  Simple provably fair system (described below).

• Free faucet
  Get free faucet just after signup. Deposit is not required.

• Automatic deposits
  Deposits are credited automatically after single network confirmation.

• Instant withdrawals
  Anytime, any amount, even 1 satoshi.

• 1 satoshi is min. bet
  Play any balance, have fun.

• Flat 1% house edge
  One of the lowest house edge on the market.

• Multiple windows bets
  Multiple tabs, windows, browsers or devices allowed simultaneously within single account.

• One-click signup
  It's easy to get an account. Even email is an option.

• Bankrollers welcomed
  The most attractive conditions on the market.

• Mobile friendly
  Fully tested on a range of devices.

How provably fair works:

We have generated a secret string and get its sha256 lowercase hexadecimal hash. This hash is representing a game #25,000,000. The game #24,999,999 is represented with the sha256 lowercase hexadecimal hash from the previous game hash, and so on. In this way, all games are represented by hash chain, that excludes any intervention by it's nature.

The result of each game is calculated by simple algorithm below (Javascript, CryptoJS library required), that uses a salted game hash:

Code:

const CG_GAMES_SALT = ''; // lowercase hexadecimal hash representation of unmined bitcoin block #572,752 here
const CG_MSB_NUMBER = 52; // MSB number (https://en.wikipedia.org/wiki/Bit_numbering#Most_significant_bit)
const HEX_ENCODING = CryptoJS.enc.Hex;

// computation logic
const CG_GAME_RESULT = (gameHash) => {
    gameHash = CryptoJS.HmacSHA256(HEX_ENCODING.parse(gameHash), CG_GAMES_SALT)
        .toString(HEX_ENCODING)
        .slice(0, CG_MSB_NUMBER / 4);
    const hashResult = Math.floor(99 / (1 - parseInt(gameHash, 16) / Math.pow(2, CG_MSB_NUMBER)));
    return Math.max(hashResult / 100, 1);
};

The salt is a constant and equal to lowercase hexadecimal hash representation of unmined (at the moment of making this post) bitcoin block #572,752. This way, such salt is a proof that the hash chain was NOT chosen deliberately with unfavorable game results for the players. First game hash is: 4790d1e1b91bd559cbd228e713fa85749443c0030b0036ae6b500e82d6490630


Games fair verification tools:
Verify Online / Verify Offline / JsFiddle / GitHub

[Haunebu]

The site is basically a blank screen with some text. Why did you bother launching it in this state op? It seems like it is still in beta mode.

No gambler would be interested in a website like this. Expected something better after the manner in which you advertised it. Disappointing.

[okala]

I think the site is still under construction because it simply a blank website with no features and nothing at all, you should have left the advert of your gambling site until it fully operational. I suggest you bring down this thread until your site is ready for full operation or better still take the thread to gambling discussion section.

[Bitinity]

The site is basically a blank screen with some text. Why did you bother launching it in this state op? It seems like it is still in beta mode.

No gambler would be interested in a website like this. Expected something better after the manner in which you advertised it. Disappointing.

I think it is not in beta mode, but it is in pre-launch mode because it will be launched once the block mentioned is mined. It is usually called by provably fair seeding event.
Looking at the font on the page at the moment, I think it will be something interesting so I'll wait first instead of getting disappointed before knowing how the game looks like although from the explanation it will be just another crash game. @OP did you get the license from bustabit script?

[alisafidel58]

This is what you will get when you visit the site of Coinsgainers. At approximately what day will the block be mined? I'm not good with the bitcoin block.

[Bitinity]

This is what you will get when you visit the site of Coinsgainers. At approximately what day will the block be mined? I'm not good with the bitcoin block.

In average we have 1 block in every 10 minutes imo, now we are at block 572733 which means 19 blocks to go. Approximately the block for the seeding event (572752) will be mined in the next few hours.

[alisafidel58]

This is what you will get when you visit the site of Coinsgainers. At approximately what day will the block be mined? I'm not good with the bitcoin block.

In average we have 1 block in every 10 minutes imo, now we are at block 572733 which means 19 blocks to go. Approximately the block for the seeding event (572752) will be mined in the next few hours.

Thanks, I will be keeping an eye on this. This one made me curious for this is the first time that I saw a gambling site with such an event.

[jarolee]

Thank you all for the deep interest. Actually, I'm surprised!
I will try to give answers to all your questions above within next few minutes.

[jarolee]

• How much is the transaction fee for withdrawal?
  Currently we have a fixed withdrawal fee of 0.0002 btc. May be lowered in the future.

• Is there a minimum amount for bankrollers?
  Currently, there is no any limits.

• It seems like it is still in beta mode.
  We are in pre-launch mode, as @Bitinity exactly mentioned. Just wait, please for the bitcoin block #572752.
  However, of course, we are planning to add a lot of more tasty features in the future.

• It will be just another crash game.
  Fortunately, not just another. The game is developed from scratch.
  Nevertheless, @Bitinity absolutely right. This is a so-called "crash game".

• At approximately what day will the block be mined?
  Approximately, bitcoin block #572752 will be mined today 22 Apr 2019 at ~11:30 AM UTC.

[panjul07]

This one made me curious for this is the first time that I saw a gambling site with such an event.

It is not a new thing in this provably fair gambling system, there were many other sites used seeding event before. It seems that you are new to this gambling board so I suggest you to check it in this gambling board.
10 blocks left, it will be released within around one and a half hour. So lets see and wait for the official launch of the game.

[edisystem]

Sorry but i'm still not understand how is this game works, when i visit the site it's only showing coinsgainer logo with "The game to be launch on Bitcoin block # 572,752".

Is it like these or what?

[nauane]

I think the site is still under construction because it simply a blank website with no features and nothing at all, you should have left the advert of your gambling site until it fully operational. I suggest you bring down this thread until your site is ready for full operation or better still take the thread to gambling discussion section.

The site is under construction but one thing which i do not understand is that it says that game/site will be launched on Bitcoin block No. 572,752. What does bitcoin block has to do with the game ?

[Bitinity]

I think the site is still under construction because it simply a blank website with no features and nothing at all, you should have left the advert of your gambling site until it fully operational. I suggest you bring down this thread until your site is ready for full operation or better still take the thread to gambling discussion section.

The site is under construction but one thing which i do not understand is that it says that game/site will be launched on Bitcoin block No. 572,752. What does bitcoin block has to do with the game ?

Please read before asking, it is clear that they are doing provably fair seeding event before the launch. If you do not know what is this all about then please do a quick search in this forum and you will know what is seeding event and why the use of the chosen bitcoin block which is not mined yet.

I find the problem with cash out system maybe players face difficulties with cash out system. Some features are maybe difficult for the players I think, it will be more good if they want. Yes some features are also good and it's well designed site.

What the hell you are talking about? The site is not even working yet, how could you find a problem with the cash out system?

[jarolee]

Bitcoin block # 572752 finally mined.
Thus we have a game salt 00000000000000000008f125261151e5a1812f3f34cf80f375943c687a9ba6b7 that is represented by bitcoin block's #572752 lowercase hexadecimal hash.

CoinsGainer officially launched!

[Chibongvdg]

I think the website is not working. All I can see is a dark background and a square shapes keeps on flipping. Does anyone here got any luck accessing the site?

[bering]

I think the website is not working. All I can see is a dark background and a square shapes keeps on flipping. Does anyone here got any luck accessing the site?

I can access the site properly and apparently the cause why you cannot access the site probably there is something wrong with your internet connections however i just hanging out to chat mode and seems there is no moderator at there because some of people questions were not answering

[shield132]

If I were you, I would launch this website with great template because otherwise have no idea how to attract any player. Game you offer is absolutely same the famous bustabit has. There isn't any promotion or diffetent plan/strategy/offers like cashback amd etc to attract users, also it seems like website was started from own pocket money because bankroll is 5 bitcoin and as you state, users will automatically cashout if their winning exceeds to 1% of bankroll.