Topic: [ANN] [GAME] [GAMBLING] [ETH] . 🔥💥 Introducing the ZeroSum Game 🔥🔥💥 (Read 357 times)

now that's nice. most of the crap projects here has no product, not even a website yet with the airdrop hype they can easily get a large audience. people really are humans. attracted with easy money. 

I don't understand your post. Did you forget to quote another post??

Yes it will be very useful and not only in times of recession, in times of growth it will also come in handy.

There are *some* similarities, the "player vs player" part, but a lot of differences too. The concept to share gains et losses between teams is unique.

The minimum bet you have to send in order to join the game is 0.05 ETH.

Try it out yourself, we'll refund you 0.05 ETH if you lose.  

By the way we are not doing an ICO. The product is live, working, and 100% self-funded  

another game-related cryptocurrency just like what i am in my sig campaign. ill check how i can pass my time with your game. lol is it expensive or relatively cheap to enter in your game?

Hi konstant111, thank you for your offer ! I'll launch a bounty program in a few days, it'll include several translations.
I'll let you know as soon as the post is online, if you want to reserve the russian translation. 

Will translate on Russian language, if you want, I see only if you write me PERSONAL MESSAGE

Hi all, I've released the source code. 

Heads team contract :  https://etherscan.io/address/0x3c77ea302af6a76be2c2746a6dda22ac84318bb8#code
Tails team contract : https://etherscan.io/address/0x4f1c550ffcf0a3763e3973343e21f0c8886c18ee#code
Core contract : https://etherscan.io/address/0xa464ce87d6ae47c23254f9bb431274cdc4164625#code

Hi sandor111, thank you for you feedback ! The error has been rectified, and the service fee has been lowered to 1%  

Hello Harry_Bitcoin12ER ! Thank your for you feedback !
You don't need to withdraw, if you win a round, your payout will automatically be sent to the ETH address that you have used to send your bet. 

Hi dE_logics, thank your for your feedback.
We have taken into consideration your suggestion, and you are right. The following rounds (from round #15) will last 1 hour each.  

Here is how we generate the random number. Do not hesitate to ask for precisions if required.

Once the round is over :

We ask oraclize for a random number between 1 and 2, let’s call this number OraclizeNumber
At the same time, we extract a pre-calculated secret random number for this round between 1 and 2, let’s call this number LocalNumber

IF OraclizeNumber = 1 AND LocalNumber = 1, THEN the winning team is “HEADS”
IF OraclizeNumber = 1 AND LocalNumber = 2, THEN the winning team is “TAILS”
IF OraclizeNumber = 2 AND LocalNumber = 2, THEN the winning team is “TAILS”
IF OraclizeNumber = 2 AND LocalNumber = 1, THEN the winning team is “HEADS”


How OraclizeNumber is determined

We use the following query, inside the main smart contract ( https://etherscan.io/address/0xa464ce87d6ae47c23254f9bb431274cdc4164625 )


The response from Oraclize is publicly available, given the fact that they call our _callback function within the main contract

Example of _callback call : https://etherscan.io/tx/0xe6427875539d02bfa38beec70da00a23b15725f3dd780e1cc5bb731c5a5ca98b

How LocalNumber is determined

We have used the following javascript code to precalculate a large number of LocalNumbers for the future rounds.

https://gist.github.com/yoann-losbar/546a7dd73719a567d6b6edbd2ce0be30

Example for round 703 (fake data, for illustrative purpose only)


    “703": {
        "winningChoice": 2,
        "pub": "38c12dc83787c5a342dcf78e8c9cdc2b2b1cd48a8bc2e080b531c305084b65b5",
        "salt": "440393a3-cfe0-4250-89df-b34530fc28f5"
    }

The “pub” key 38c12dc83787c5a342dcf78e8c9cdc2b2b1cd48a8bc2e080b531c305084b65b5 will be publicly available as soon as the round starts.
The salt and the winningChoice are going to be kept secret until the round finishes.
As soon as the round is finished, the precaculated winningChoice and the salt key are going to be released.

You’ll then be able to verify that this local winning number (LocalNumber in our example) has not been modified by us since the beginning of the round by using the following code :


Why are we using two random numbers from different sources to determine the final winning random number

This system is trustless, as the true spirit of smart contracts/cryptocurrencies .
None of the 4 involved actors ( the Ethereum Miners, Oraclize, us, and you, players) can know in advance the outcome of a round, and bet using this knowledge.

Note :

The verification page (providing pub hashes, salts and sha2 calculator will be available in the next days)

Do not hesitate if you have more questions 

Hello team! Great idea to combine gambling and blockchain. How can i withdraw ETH into fiat money?

Here in the ANN it says that service fee is 2% but on the website it says 3%. My opinion is that both are too much. 1% should be enough. Or maybe keep 3% for now but make a promise that you will lower fee to 1% when there will be more than 1 ETH daily volume.

Anyway, I like the idea!

Yes, I think it's just random. But it would be nice if Dev confirms and explains which algorithm for randomization is used.
Also, may I suggest that you shorten the time period of each round. Or make two parallel rounds, one lasting 24 hours, other on only one hour or something.

Thank you my friend
Winners are (for now) randomly drawn yes.
Each team has an equal chance to win. But.. you can apply some strategies to improve your long-term gain expectancy 

Yes, the game is based on three ethereum contracts, (two for receiving each team bets and one for the core of the game).

As you said, the game is transparent, the funds can not be withdrawn by the administrators, the only way to get money out of the contract is to pay the winners.

I'll release the source code today 

Very interesting concept. What is the game that will be played? Is the game just a pure random winner of a betting round or is it a game that will be played by two players that require skills (like chess) that improves the odds of one team winning over another?

The game on the ETH blockchain certainly only supports ETH.

Good idea. I understand that the whole game is based on the blockchain of the ethereum, it is transparent and without deception. Can I bet only in ETH?