Hi joolz
It looks like this is the transaction you are asking about:
http://blockchainroulette.com/txid/72d9f45f34d8f442
https://blockchain.info/tx/72d9f45f34d8f442d271cbc07e9d59b774ffe3c43dc98379ce0f903fdc7ded1b


This transaction was committed to the block chain in block 233052, which is also what the game shows so this is not an error in the game.

Your transaction did include an appropriate transaction fee, however that doesn't always guarantee that your transaction will be included in the next block.  It is up to the miner who discovered that block to determine which transactions they want to include in the block. Sometimes, no transactions are included in a block.  This is something that we have absolutely no control over.  It's just the nature of the Bitcoin protocol.

Thanks for the question, I hope this explanation makes sense.

Hi Everyone,

Just posting an update to let everyone know we're still around!  It's been 4 months and we've just processed our 1,000th bet and over 100BTC.

As always, post your questions/comments/feedback and I'll get back to you.

I've added QR codes for each possible Roulette bet.  If your wallet scans QR codes it makes it very easy to send bets.

The site also has bitcoin: URI links on the addresses.  It sure would be great if these links worked with an online wallet, but that doesn't seem possible.  Does anyone have any suggestions on how to make this happen?

Each block has a random roulette spin number, 0-37.  The block your transaction is included in determines if your bet transaction wins or looses.
So yes, if you place a bet and a new block is created and your transaction doesn't get included in that block.. you don't need to send another transaction. As soon as your transaction is included in a block the spin result for that block is compared to the bet you placed and paid out if it's a winner.

Hi Wtfvanity,

I'm sorry I missed your previous post, in my previous response to a similar question I provided the explanation:
Your bet is only processed when it is included in a block (1 confirmation).  It is therefore possible that you place a bet, the chips appear on the board, a new block is created which spins the ball and it lands on a number you bet on,
but if your bet transaction is not included in that block, it does not win.  I hope that makes sense. 

Here are the links to your bet transactions so you can verify the results:
http://blockchainroulette.com/txid/466b316ec038aecf
http://blockchainroulette.com/txid/7278d045e4b9c6f1

The short answer is that this is not a 0-confirmation game like SatoshiDice, bets are processed after 1 confirmation with the block that includes the transaction determining the win/lose for that bet.

Updates to the site today.  It doesn't look like much has changed, but I've cleaned up the front-end browser interface to fix a few minor graphical bugs players were experiencing. 

There have been no issues processing any bets over the last month, so the site is officially out of "beta testing" status. 

Bet limits have been increased! (Bet limits are per transaction / transaction input, so are easily avoid by sending multiple transactions).    As always, to ensure that all bets can be paid if won,  the site will return bets placed if they could not be paid should the bet win.

I've got a few bitcents to give away on Twitter.  Tweet at @BTCRoulette and I'll send them out!

Thanks for the testing!


I'm aware of this issue.  The current mish-mash of javascript has issues with a lot of bets on the table or when new blocks are created in quick succession, or other reasons.  I am current working on re-writing the javascript UI with a proper framework that will better handle the live updates from the backend.  So your right, if things don't look right, a quick reload of the browser will fix it.  The JS web interface is completely separate from the backend that does the Bitcoin stuff so if you reload it will be the most current state of the game.


This is by design.  Bets are only accepted when they are included in a block, because the spin for that block is determined by the hash of the block the transaction is included in.   So it is possible to place a bet, then have a new block created, but if your transaction is not included in that new block, your bet remains on the table until it has at least 1 confirmation.

I will look into the concept of green addresses, but this is just not an instant game like SatoshiDice or satoshiroulette.  I wanted to do something different, by making bets be "won or lost" when included in a block instead of instantly, this lets multiple people play together at the same time, placing bets on the same board like in real life.

Thanks for the suggestion about en prison.
Would this happen to be your bet ? http://blockchainroulette.com/txid/52ab4263757991e7

En prison may be difficult to implement because it requires the player to make the choice after the wheel lands on 0.  It's not immediately obvious to me how this would be done with a Bitcoin transaction.

The la partage rule on the other hand would be much simpler to implement.  It's something that I will consider. This would reduce the house edge from 2.70% to 1.35%

Hello Mods 

I run a Bitcoin gaming site Block Chain Roulette at http://blockchainroulette.com

I've made an announcement post in the Newbie forum at https://bitcointalk.org/index.php?topic=123546.msg1355435#msg1355435

Would you be so kind to whitelist me and more my post to the Marketplace/Gaming forum?

Thank you

A few updates:

- I've posted some info on the distribution of random numbers so far http://blockchainroulette.posterous.com/random-number-distribution
- There's a few minor bugs in the Javascript UI, I'm currently working on a complete rewrite of the front-end interface.  These are display issues only and do not affect the game play.

I'm interested to hear what suggestion players might have to improve the site.   Other Bitcoin games seem to also support Litecoin.  is Litecoin actually that popular? Would anyone like to see Litecoin added?

We're also on twitter at @BTCRoulette.  Follow for more frequent news and updates.

Your right, if I was operating a mining pool I guess I could throw away new block hashes that I didn't like.  Since I can't prove I don't operate a pool or a large mining operation, that's just something else for a player to consider before they decide to send their BTC.

But unless the bets are greater than the block reward,  your right it's wouldn't even be worth it to try and pull off this type of scheme.

Thanks for the comment that was a really good point.

Block Chain Roulette blockchainroulette.com

Block Chain Roulette is a 1-confirmation Bitcoin roulette game. No sign-up required, just send Bitcoins to play.
Unconfirmed bet transactions are shown on the roulette board shared between all players.
For each new block that is created, a random Roulette spin is generated and any winning bet transactions that were included in that block are paid.

All roulette bets are possible: splits, rows, columns, etc. Each possible bet has a unique Bitcoin address.

	Min	Max
Inside	0.01BTC	0.50BTC
Outside	0.01BTC	1.00BTC

All randomly generated spin numbers can be verified to be predetermined based on the hash of the corresponding block.  The process of generating the random number is explained here: http://blockchainroulette.com/secrets

Aproximatley 24 hours after a block is generated, the secret key used to generate the random number is released and the random number can be verified on a bet details page, for example: http://blockchainroulette.com/txid/e9d373d388744585 The random number is actually re-calculated in your browser using javascript.

An API is provivded to make it easy for bots to play: http://blockchainroulette.com/api

As with other games of this nature, e-wallets may not allow you to receiving your winnings.  Test by sending 0.001BTC to any of the bet addresses.


Post your feedback and suggestions and on twitter http://twitter.com/BTCRoulette