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Topic: Coinroll.it - Dice rolling game | Instant bets | Off-the-chain | 1% House edge - page 43. (Read 81545 times)

sr. member
Activity: 293
Merit: 250
You should implement in your API a way to get the minimum and the maximum bet value allowed. This will avoid us having to rewrite our script everytime the values change.

Added a method that does exactly that: /getgameinfo
sr. member
Activity: 293
Merit: 250
You should implement in your API a way to get the minimum and the maximum bet value allowed. This will avoid us having to rewrite our script everytime the values change.
mem
hero member
Activity: 644
Merit: 501
Herp Derp PTY LTD
Nice to see someone pushing the house edge lower yet again Cheesy
sr. member
Activity: 322
Merit: 250
I'm enjoying the relatively low house edge.
sr. member
Activity: 293
Merit: 250
To which URL is it possible to use your API?(I may have not seen it)

API info: https://coinroll.it/api
full member
Activity: 182
Merit: 100
Swiss Money all around me!
Bet "§" and all your balance is GONE!

Not gone, it's some sort of weird rounding/display error. In the process of fixing it.

EDIT: Fixed, sorry for the delay. Press F5 to reload the client side javascript.

No problem  Wink.

To which URL is it possible to use your API?(I may have not seen it)
sr. member
Activity: 293
Merit: 250
Bet "§" and all your balance is GONE!

Not gone, it's some sort of weird rounding/display error. In the process of fixing it.

EDIT: Fixed, sorry for the delay. Press F5 to reload the client side javascript.
full member
Activity: 182
Merit: 100
Swiss Money all around me!
Bet "§" and all your balance is GONE!
sr. member
Activity: 293
Merit: 250
vip
Activity: 1316
Merit: 1043
👻
Neat user interface. Higher max bets please.
newbie
Activity: 44
Merit: 0
I love this site. Fun and easy.
sr. member
Activity: 293
Merit: 250
And about your bitcoin client? I'm only asking because I have heard that the original client will become very slow if there are thousands of bitcoin addresses in your wallet.

Custom software.


FAQ has been updated. There were also some minor UI improvements.
sr. member
Activity: 293
Merit: 250
so, kudos for you if your system will really avoid this problem.

And about your bitcoin client? I'm only asking because I have heard that the original client will become very slow if there are thousands of bitcoin addresses in your wallet.
sr. member
Activity: 293
Merit: 250
maybe you should take a look on this thread:
[SUCCESS] Double Spend against a satoshidice loss

Maybe aforementioned system was inspired by that thread.
sr. member
Activity: 293
Merit: 250

I also saw that every time I refresh the page, a new deposit address is showed to me. so, are all the address showed exclusively mine or they are just temporary address? if they are temporary, you should say for how long they will be assigned to my account.

They are yours. They are assigned to your account forever.



so I must ask, which bitcoin client you're using to run your system?

Your missing the point on the double spending. If they win they won't double spend, if they lose they will.

There is a system in place to combat that scenario. Obviously I can't go into specifics.

I have my doubts about that.

unless I'm missing something, the only way you can track a bad user is through their IP, cookies or bitcoin address.

A bad user will use TOR or Web Proxys to avoid the IP tracking, use the browser in incognito mode to avoid cookie tracking, and they can generate as many bitcoin address as they want and use mtgox to unlink his addresses.

maybe you should take a look on this thread:
[SUCCESS] Double Spend against a satoshidice loss
sr. member
Activity: 293
Merit: 250
Your missing the point on the double spending. If they win they won't double spend, if they lose they will.

There is a system in place to combat that scenario. Obviously I can't go into specifics.
sr. member
Activity: 293
Merit: 250
The user id and the password are all run in to each other as you can see.  Maybe put some spaces or something in there?

This what user-select: none supposedly does but Chrome and Firefox throw a hissy fit if you enable it. I will try floating the userid and password or add some spaces on top of the margin.


Edit: also, there's no feedback if the number I type into the 'select game' form is too big.  I'd like it to tell me what the maximum number is at that point, rather than having to switch back to the FAQ or wherever I saw it before.

I will add some sort of feedback.


Edit: Custom games <64175 through <64238 all pay out the exact same multiplier (1.01x).  You should probably use more decimal places for the high-probability low-multiplier games so that the payouts are more fair.  The <64175 game pays out just 1.01x, that's a 1.097% house edge, almost 10% higher than the claimed 1%.  It looks like you're rounding the multiplier down, so the house edge goes higher than 1%, further in the house's favour:

To make things simpler and reduce the decimal digit spam, multipliers are rounded down to 4 significant digits. This makes the effective house edge float between 1% - 1.1% depending on the number. I still think that an 0.05% (on average) difference is insignificant compared to the advertised 1% house edge. Maybe I should add this to the FAQ.


ie. the 100 satoshis I won 'should' have been 109 or 110 satoshis (10% more):

You actually won 10100 satoshis. If you define "won" as the delta between bet and return, then a < 65500 game (not allowed, but just for the sake of argument) would always be in the negative, multiplier rounding or not. Maybe I should have the maximum number set to 60000.


The 'withdraw' popup doesn't have a 'cancel' button or an 'x' in the corner to close it, and escape doesn't get rid of it either.  Clicking 'withdraw' again got rid of it, but that's a little less than obvious.

All popups close if you click outside them. I will make it so that esc works as well.


Other than all that (all of which is really minor) I like how the game works.

Thanks!
hero member
Activity: 504
Merit: 500
Your missing the point on the double spending. If they win they won't double spend, if they lose they will.
sr. member
Activity: 293
Merit: 250
For now it won't be a problem, but let's assume that you maximum bet go as high as satoshi dice, so you may review this functionality because the double spends:

- sent 500 btc with no fee
- played and lost
- double spend with a generous fee

Edit: This can be (mostly) avoided.


I also saw that every time I refresh the page, a new deposit address is showed to me. so, are all the address showed exclusively mine or they are just temporary address? if they are temporary, you should say for how long they will be assigned to my account.

They are yours. They are assigned to your account forever.

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