Topic: Coinroll.it - Dice rolling game | Instant bets | Off-the-chain | 1% House edge - page 44. (Read 81559 times)

I opened the 'details' of my account (username and password) and selected the text to copy it somewhere safe.  The copied text comes out like this when I pasted it:


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?

Edit: the same issue happens if I copy/paste the bet history:


There must be some way of making copy/paste work better even though you're not using HTML tables.

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.

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:

In this example I was paid
  0.0001 0100
when a true 1% edge game would have paid 0.99 * 65536/64175 * 0.0001 =
  0.0001 0109 (9555)

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


Note that it isn't just the high-probability, low-payout games that have this issue.  <21620 through <21626 all pay out exactly 3x.

Also, it would be good to see the payout multiplier in the table of previous games played.

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.

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

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


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.

Cookies are set to expire in 10 years, assuming you don't delete them or visit the website in Incognito mode.

So pros:
- 1% house edge
- Unlimited instant bets after a deposit
- Fees only once per withdrawal
- No blockchain spam on each bet
- Still provably fair with pre-disclosed hash of the secret used for the day, with actual secret key disclosed daily.
- API, in case someone wants to automate betting. Kinda boring not betting yourself tho, IMO.

Cons:
- Got to remember an account key or withdraw before leaving. At least balance remains recoverable if you can sign with one of your deposit address, in case the key is lost. Edit: Or not delete cookies before withdrawing.

Looking good.

Game is really cool.  I lost .01 BTC

Coinroll is a new dice rolling game with a few interesting features:

A house edge of only 1%

Unconfirmed deposits
We accept unconfirmed transactions. You can begin playing instantly - no registration is required.

Deferred withdrawals
You can choose to have your winnings sent to an address once your deposit has cleared. Staying on the website while your transaction is queued is not necessary.

Instant bets
Bets are off-the-chain and are processed instantly while still being provably fair. As such, you can bet as low as 0.00001 BTC.

API
An easy-to-use interface is available for those who would like to use Coinroll from the command line or integrate it into their projects.

Custom games
While a few preset games are available, you can set a target number from 1 to 64000 and your win odds and multiplier will be calculated accordingly.

Here's an example of a bet. More information on provability and database dumps are available here.

Betting limits will slowly be increased over the coming weeks.

Come check it out at https://coinroll.it