[ANN][INTRO]⚡ZoomRaffle.io - PLAY AND WIN ETH⚡

[ZoomRaffle]

...
-   Winner of each raffle pays 3% fee + oraclize operational fee;
...

Yet, the FAQ section states

"What is the bet fee?
- ZoomRaffle doesn't impose any bet fees on our users you just have to pay the transaction gas fee.

However, ZoomRaffle charges the raffle winner 1% of the win amount plus oraclize fee."

Which is correct?

The fee is 3% from each winning. Must be a mistake in the FAQ section, we’ll correct it. Thank you!

You're welcome. 

An interesting observation from the contract code.

You compute commission by dividing the pool by 33 which results in slightly more than 3%.  If you multiplied by 0.03 the result would be exact 3%.  Just an observation.

Solidity is generally funky with floating point numbers so we decided to do a simple integer division instead. You’re correct that it does round up things slightly.

[pureheart]

This project seems great . But where is the people behind tgis project? It's important to us to know who's behind to the project we want to support with?.  It's not that easy to make a lot of efforts to the project that at the end will not be succeed.
But as what I see this project seems have a great potential.

[sjyi]

Some observations based on my taking a chance on your raffle.

Prior to me entering the raffle, all winning chances were either 50% or higher.

0x61Ec39942476D93C475f91ACA2fAE062d64B250c placed a bet for 0.01 eth 4 days ago on May-10-2018 10:57:44 AM +UTC

I placed a bet for 0.012 eth on May-14-2018 06:01:01 PM +UTC

The raffle drawing took place on 3:07PM. (counting down of 5:00 minutes to 0:00).

There was a dialog box that said "raffle drawing in process. please wait" (something similar to that. I didn't write it down).

After waiting for about 10 minutes of waiting with nothing happening, I walked away.

I came back a few hours later. I saw "You won 0.022 ETH" dialog on left bottom of my screen.  When I clicked on it, it disappeared.  When I checked my address I saw that no deposit came in.

what happened?

[ZoomRaffle]

Some observations based on my taking a chance on your raffle.

Prior to me entering the raffle, all winning chances were either 50% or higher.

0x61Ec39942476D93C475f91ACA2fAE062d64B250c placed a bet for 0.01 eth 4 days ago on May-10-2018 10:57:44 AM +UTC

I placed a bet for 0.012 eth on May-14-2018 06:01:01 PM +UTC

The raffle drawing took place on 3:07PM. (counting down of 5:00 minutes to 0:00).

There was a dialog box that said "raffle drawing in process. please wait" (something similar to that. I didn't write it down).

After waiting for about 10 minutes of waiting with nothing happening, I walked away.

I came back a few hours later. I saw "You won 0.022 ETH" dialog on left bottom of my screen.  When I clicked on it, it disappeared.  When I checked my address I saw that no deposit came in.

what happened?

Here is your bet of 0.012 eth coming in: https://etherscan.io/tx/0xcd0821248aa8fe5e22635041cf374a60420e3119f0e00d6795776137c4698230. Raffle update indeed took 2 hours. Here is the call to update https://etherscan.io/tx/0xe03a1b3efb752227f486a01486f1fff7520e6e8518961e65aa77429d81e5e0bd. After the update we got an oraclize callback here https://etherscan.io/tx/0xfc007c82705be2af58817d06bdd5c935d55ec73c8ed7aa4bf5d791e1af007e23. As you can see, in the oraclize callback Win even occured. You can check it out here: https://etherscan.io/tx/0xfc007c82705be2af58817d06bdd5c935d55ec73c8ed7aa4bf5d791e1af007e23#eventlog

We are very sorry that the web interface indicated that you won while in reality it didn't happen. This might be connected to the fact that the tab was not active for a long period of time, so I'm not sure if the win event was properly recorded by Web3js. This will need a little investigation.

Btw, I just verified the contract code on etherscan.io and you can take a look at it yourself here: https://etherscan.io/address/0xfc637df69fbeceff245a20053764674ace313398#code

Just so that you know there is nothing strange going on there.
There was a problem with raffle update time, we’ve solved it already.

[ZoomRaffle]

This project seems great . But where is the people behind tgis project? It's important to us to know who's behind to the project we want to support with?.  It's not that easy to make a lot of efforts to the project that at the end will not be succeed.
But as what I see this project seems have a great potential.

As it is described in our Whitepaper. Currently, our company is located in Ukraine. The government here does not support online gambling projects. So we decided to stay anonymous until we get the license in the jurisdiction of the Island of Man. We are already working towards getting it. However, our CEO is in a personal contact with many blockchain funds and blockchain enthusiasts and advisors. We have nothing to hide, it’s just about our safety and development of the platform.

[Vinxent]

I think it's a eminent ico project! Strong scientific team of the project! The project promises to pay dividends is a very beautiful ecosystem ! The project is waiting for success!

[ZoomRaffle]

I think it's a eminent ico project! Strong scientific team of the project! The project promises to pay dividends is a very beautiful ecosystem ! The project is waiting for success!

Thank you for your interest and positive feedback!

[ZoomRaffle]

Some observations based on my taking a chance on your raffle.

Prior to me entering the raffle, all winning chances were either 50% or higher.

0x61Ec39942476D93C475f91ACA2fAE062d64B250c placed a bet for 0.01 eth 4 days ago on May-10-2018 10:57:44 AM +UTC

I placed a bet for 0.012 eth on May-14-2018 06:01:01 PM +UTC

The raffle drawing took place on 3:07PM. (counting down of 5:00 minutes to 0:00).

There was a dialog box that said "raffle drawing in process. please wait" (something similar to that. I didn't write it down).

After waiting for about 10 minutes of waiting with nothing happening, I walked away.

I came back a few hours later. I saw "You won 0.022 ETH" dialog on left bottom of my screen.  When I clicked on it, it disappeared.  When I checked my address I saw that no deposit came in.

what happened?

We’ve also refunded  your bet to your Ethereum address due to the mistake in our web interface.
https://etherscan.io/tx/0x59e002a4e38c74ac9f648ac60c3ce93ba428f27d16bfcde7d7763b416f119b60

[ZoomRaffle]

Join the awesome ZoomRaffle.io community chat: t.me/ZoomRaffle

[ZoomRaffle]

Up

[sjyi]

Some observations based on my taking a chance on your raffle.

Prior to me entering the raffle, all winning chances were either 50% or higher.

0x61Ec39942476D93C475f91ACA2fAE062d64B250c placed a bet for 0.01 eth 4 days ago on May-10-2018 10:57:44 AM +UTC

I placed a bet for 0.012 eth on May-14-2018 06:01:01 PM +UTC

The raffle drawing took place on 3:07PM. (counting down of 5:00 minutes to 0:00).

There was a dialog box that said "raffle drawing in process. please wait" (something similar to that. I didn't write it down).

After waiting for about 10 minutes of waiting with nothing happening, I walked away.

I came back a few hours later. I saw "You won 0.022 ETH" dialog on left bottom of my screen.  When I clicked on it, it disappeared.  When I checked my address I saw that no deposit came in.

what happened?

Here is your bet of 0.012 eth coming in: https://etherscan.io/tx/0xcd0821248aa8fe5e22635041cf374a60420e3119f0e00d6795776137c4698230. Raffle update indeed took 2 hours. Here is the call to update https://etherscan.io/tx/0xe03a1b3efb752227f486a01486f1fff7520e6e8518961e65aa77429d81e5e0bd. After the update we got an oraclize callback here https://etherscan.io/tx/0xfc007c82705be2af58817d06bdd5c935d55ec73c8ed7aa4bf5d791e1af007e23. As you can see, in the oraclize callback Win even occured. You can check it out here: https://etherscan.io/tx/0xfc007c82705be2af58817d06bdd5c935d55ec73c8ed7aa4bf5d791e1af007e23#eventlog

We are very sorry that the web interface indicated that you won while in reality it didn't happen. This might be connected to the fact that the tab was not active for a long period of time, so I'm not sure if the win event was properly recorded by Web3js. This will need a little investigation.

Btw, I just verified the contract code on etherscan.io and you can take a look at it yourself here: https://etherscan.io/address/0xfc637df69fbeceff245a20053764674ace313398#code

Just so that you know there is nothing strange going on there.
There was a problem with raffle update time, we’ve solved it already.

Thanks for the detailed explanation.

You say that the raffle update time issue is already solved.  May I ask what the issue was that took 2 hours to process the raffle?

[sjyi]

Some observations based on my taking a chance on your raffle.

Prior to me entering the raffle, all winning chances were either 50% or higher.

0x61Ec39942476D93C475f91ACA2fAE062d64B250c placed a bet for 0.01 eth 4 days ago on May-10-2018 10:57:44 AM +UTC

I placed a bet for 0.012 eth on May-14-2018 06:01:01 PM +UTC

The raffle drawing took place on 3:07PM. (counting down of 5:00 minutes to 0:00).

There was a dialog box that said "raffle drawing in process. please wait" (something similar to that. I didn't write it down).

After waiting for about 10 minutes of waiting with nothing happening, I walked away.

I came back a few hours later. I saw "You won 0.022 ETH" dialog on left bottom of my screen.  When I clicked on it, it disappeared.  When I checked my address I saw that no deposit came in.

what happened?

We’ve also refunded  your bet to your Ethereum address due to the mistake in our web interface.

https://etherscan.io/tx/0x59e002a4e38c74ac9f648ac60c3ce93ba428f27d16bfcde7d7763b416f119b60

Thanks for the refund.  Just wondering why you process Odd games differently from Even games.  The code segments seem to be identical from Odd and Even game index.

[Duelyst]

ANN-FILIPINO Language here:  https://bitcointalk.org/index.php?topic=3874155.0

[ZoomRaffle]

Some observations based on my taking a chance on your raffle.

Prior to me entering the raffle, all winning chances were either 50% or higher.

0x61Ec39942476D93C475f91ACA2fAE062d64B250c placed a bet for 0.01 eth 4 days ago on May-10-2018 10:57:44 AM +UTC

I placed a bet for 0.012 eth on May-14-2018 06:01:01 PM +UTC

The raffle drawing took place on 3:07PM. (counting down of 5:00 minutes to 0:00).

There was a dialog box that said "raffle drawing in process. please wait" (something similar to that. I didn't write it down).

After waiting for about 10 minutes of waiting with nothing happening, I walked away.

I came back a few hours later. I saw "You won 0.022 ETH" dialog on left bottom of my screen.  When I clicked on it, it disappeared.  When I checked my address I saw that no deposit came in.

what happened?

We’ve also refunded  your bet to your Ethereum address due to the mistake in our web interface.

https://etherscan.io/tx/0x59e002a4e38c74ac9f648ac60c3ce93ba428f27d16bfcde7d7763b416f119b60

Thanks for the refund.  Just wondering why you process Odd games differently from Even games.  The code segments seem to be identical from Odd and Even game index.

Hello, the reason for that is that we don't want to overpay Oraclize. Here is the deal basically: at the end of the raffle we would clean up all the bets, jackpot and other variables. In EVM (Ethereum Virtual Machine) every time you use delete opcode (which is equivalent to setting a storage to 0) you get refunded 10,000 gas. Because Oraclize callback was doing the cleanup we were losing a lot of refunded gas to Oraclize.

Now we have a different system: we clean up the previous game on the beginning of the next game (first bet of the next game), in order to differentiate between "next" and "previous" game we just decided to separate them into odd and even. So at the start of the odd game the first bet also cleans up the previous even game and vice versa. The result is that our players get a nice gas refund which reduces the transaction price for placing a bet by roughly 50%.

Thanks and hope that this architectural decision on our side makes sense to you.

[ZoomRaffle]

Some observations based on my taking a chance on your raffle.

Prior to me entering the raffle, all winning chances were either 50% or higher.

0x61Ec39942476D93C475f91ACA2fAE062d64B250c placed a bet for 0.01 eth 4 days ago on May-10-2018 10:57:44 AM +UTC

I placed a bet for 0.012 eth on May-14-2018 06:01:01 PM +UTC

The raffle drawing took place on 3:07PM. (counting down of 5:00 minutes to 0:00).

There was a dialog box that said "raffle drawing in process. please wait" (something similar to that. I didn't write it down).

After waiting for about 10 minutes of waiting with nothing happening, I walked away.

I came back a few hours later. I saw "You won 0.022 ETH" dialog on left bottom of my screen.  When I clicked on it, it disappeared.  When I checked my address I saw that no deposit came in.

what happened?

Here is your bet of 0.012 eth coming in: https://etherscan.io/tx/0xcd0821248aa8fe5e22635041cf374a60420e3119f0e00d6795776137c4698230. Raffle update indeed took 2 hours. Here is the call to update https://etherscan.io/tx/0xe03a1b3efb752227f486a01486f1fff7520e6e8518961e65aa77429d81e5e0bd. After the update we got an oraclize callback here https://etherscan.io/tx/0xfc007c82705be2af58817d06bdd5c935d55ec73c8ed7aa4bf5d791e1af007e23. As you can see, in the oraclize callback Win even occured. You can check it out here: https://etherscan.io/tx/0xfc007c82705be2af58817d06bdd5c935d55ec73c8ed7aa4bf5d791e1af007e23#eventlog

We are very sorry that the web interface indicated that you won while in reality it didn't happen. This might be connected to the fact that the tab was not active for a long period of time, so I'm not sure if the win event was properly recorded by Web3js. This will need a little investigation.

Btw, I just verified the contract code on etherscan.io and you can take a look at it yourself here: https://etherscan.io/address/0xfc637df69fbeceff245a20053764674ace313398#code

Just so that you know there is nothing strange going on there.
There was a problem with raffle update time, we’ve solved it already.

Thanks for the detailed explanation.

You say that the raffle update time issue is already solved.  May I ask what the issue was that took 2 hours to process the raffle?

In short, the script that would initiate the call to Oraclize for a random number after 5 minutes had a hardcoded gas price of 5Gwei. Because the minimum price in the network nowadays is at least 8 Gwei the transaction got stuck for hours. We had to manually cancel it and initiate a new one. Yesterday we solved this problem by integrating our server logic with https://ethgasstation.info/ API which lets us dynamically calculate the best gas price for the update() call to the smart contract.

[ZoomRaffle]

ANN-FILIPINO Language here:  https://bitcointalk.org/index.php?topic=3874155.0

Great job! Keep moderating it and get extra shares!

[sjyi]

Some observations based on my taking a chance on your raffle.

Prior to me entering the raffle, all winning chances were either 50% or higher.

0x61Ec39942476D93C475f91ACA2fAE062d64B250c placed a bet for 0.01 eth 4 days ago on May-10-2018 10:57:44 AM +UTC

I placed a bet for 0.012 eth on May-14-2018 06:01:01 PM +UTC

The raffle drawing took place on 3:07PM. (counting down of 5:00 minutes to 0:00).

There was a dialog box that said "raffle drawing in process. please wait" (something similar to that. I didn't write it down).

After waiting for about 10 minutes of waiting with nothing happening, I walked away.

I came back a few hours later. I saw "You won 0.022 ETH" dialog on left bottom of my screen.  When I clicked on it, it disappeared.  When I checked my address I saw that no deposit came in.

what happened?

We’ve also refunded  your bet to your Ethereum address due to the mistake in our web interface.

https://etherscan.io/tx/0x59e002a4e38c74ac9f648ac60c3ce93ba428f27d16bfcde7d7763b416f119b60

Thanks for the refund.  Just wondering why you process Odd games differently from Even games.  The code segments seem to be identical from Odd and Even game index.

Hello, the reason for that is that we don't want to overpay Oraclize. Here is the deal basically: at the end of the raffle we would clean up all the bets, jackpot and other variables. In EVM (Ethereum Virtual Machine) every time you use delete opcode (which is equivalent to setting a storage to 0) you get refunded 10,000 gas. Because Oraclize callback was doing the cleanup we were losing a lot of refunded gas to Oraclize.

Now we have a different system: we clean up the previous game on the beginning of the next game (first bet of the next game), in order to differentiate between "next" and "previous" game we just decided to separate them into odd and even. So at the start of the odd game the first bet also cleans up the previous even game and vice versa. The result is that our players get a nice gas refund which reduces the transaction price for placing a bet by roughly 50%.

Thanks and hope that this architectural decision on our side makes sense to you.

Your explanation seems to make a lot of sense regarding the refund of gas.  But please do refer to "When paying onchain there is no reliable backward-compatible way for Oraclize to give back the gas "change". This is due to how Ethereum works: it is not possible to determine the exact amount of gas that will be used before the transaction gets confirmed, because it depends on the current state. Sending back the unspent gas afterwards would potentially create side effects."

from https://docs.oraclize.it/#pricing-advanced-datasources-call-fee

Are they talking about the samething?

[ZoomRaffle]

Some observations based on my taking a chance on your raffle.

Prior to me entering the raffle, all winning chances were either 50% or higher.

0x61Ec39942476D93C475f91ACA2fAE062d64B250c placed a bet for 0.01 eth 4 days ago on May-10-2018 10:57:44 AM +UTC

I placed a bet for 0.012 eth on May-14-2018 06:01:01 PM +UTC

The raffle drawing took place on 3:07PM. (counting down of 5:00 minutes to 0:00).

There was a dialog box that said "raffle drawing in process. please wait" (something similar to that. I didn't write it down).

After waiting for about 10 minutes of waiting with nothing happening, I walked away.

I came back a few hours later. I saw "You won 0.022 ETH" dialog on left bottom of my screen.  When I clicked on it, it disappeared.  When I checked my address I saw that no deposit came in.

what happened?

We’ve also refunded  your bet to your Ethereum address due to the mistake in our web interface.

https://etherscan.io/tx/0x59e002a4e38c74ac9f648ac60c3ce93ba428f27d16bfcde7d7763b416f119b60

Thanks for the refund.  Just wondering why you process Odd games differently from Even games.  The code segments seem to be identical from Odd and Even game index.

Hello, the reason for that is that we don't want to overpay Oraclize. Here is the deal basically: at the end of the raffle we would clean up all the bets, jackpot and other variables. In EVM (Ethereum Virtual Machine) every time you use delete opcode (which is equivalent to setting a storage to 0) you get refunded 10,000 gas. Because Oraclize callback was doing the cleanup we were losing a lot of refunded gas to Oraclize.

Now we have a different system: we clean up the previous game on the beginning of the next game (first bet of the next game), in order to differentiate between "next" and "previous" game we just decided to separate them into odd and even. So at the start of the odd game the first bet also cleans up the previous even game and vice versa. The result is that our players get a nice gas refund which reduces the transaction price for placing a bet by roughly 50%.

Thanks and hope that this architectural decision on our side makes sense to you.

Your explanation seems to make a lot of sense regarding the refund of gas.  But please do refer to "When paying onchain there is no reliable backward-compatible way for Oraclize to give back the gas "change". This is due to how Ethereum works: it is not possible to determine the exact amount of gas that will be used before the transaction gets confirmed, because it depends on the current state. Sending back the unspent gas afterwards would potentially create side effects."

from https://docs.oraclize.it/#pricing-advanced-datasources-call-fee

Are they talking about the samething?

Yes, in a sense. Basically what they are saying is that all the extra gas will not be refuned to us, so in order to minimize costs we need to approximate the gas costs as accurately as possible.

[mahdie88]

Can someone message me if there is any posiblities on how to get on early to join bounties??

[ZoomRaffle]

Can someone message me if there is any posiblities on how to get on early to join bounties??

Hey, it is all described in this thread. It depends on which Campaign you wish to join. Just follow the rules on the first page. If you have any further questions, I can help you!