I have a script which creates a raw transaction from outputs known to be in the cold wallet and sends them to my online wallet.  I just tell it which outputs and it makes the (unsigned) raw transaction that sends them.

I then transfer the unsigned transaction to the cold wallet using a QR code and a webcam, sign it on the cold wallet, and transfer the signed transaction back online, again using a QR code and a webcam.

I don't want to be messing about with 'change' outputs, so I want a bunch of useful-sized outputs ready to use.  500 BTC seems like a reasonable size for the cold wallet outputs.

Interestingly, to get bitcoin-qt to create a raw transaction that spends to the same address multiple times, all you need to do is comment out two lines of code and rebuild:

I only ever changed it once, and the reason is a little embarrassing, rather unbelievable, and quite disturbing.

Let's just say it was a "security measure".

Yes.

All provably fair sites are pretty much the same.

There's a secret (sometimes a site-wide secret that changes each day, sometimes a per-user secret, sometimes per-bet - it depends on the site) which is used to generate the rolls in a deterministic way.

The secret isn't published until some time after the bet has happened (at the end of the day, when the user changes their seed, after each bet, again depending on the site), but a hash of the secret is published before the bet.

In this way the site can prove that they didn't change the secret when the bet happened, because if they did the hash wouldn't match, which everyone can check once the secret is published.

Does that make sense now?  All the sites have secret seeds, they all publish the hash of the secret before, and the secret itself after.

(There's also a 'client seed' which the player himself picks after seeing the server seed hash, and before playing - this also contributes to the roll generation and prevents the site from picking a "bad" server seed to make the player lose, but is irrelevant to this discussion).

That seems like a significant omission.  "OMG this guy won so much he must be cheating (please ignore his losses)"

No problem.

And no, this isn't me "encouraging" you to tattoo your dick. 

You have to use the full URL to the image files, like this:

https://i.imgur.com/4sVfSY7.jpg
https://i.imgur.com/qELoXO5.jpg

If he won 141 and only withdrew 56 on the 22nd, why did he redeposit on the 23rd?

I wonder if this list of events is missing something.  People with a balance of 87 BTC generally don't deposit another 6 before continuing to play.

Try sending to "Goat" instead.  The forum software apparently doesn't like the apostrophe in his new name, but the original name still works.

There's quite a big difference between borrowing money from friends and family who consent to the loan and accepting money that was taken from strangers against their will under threat of violence.  I wouldn't say they were "just like" each other in any way.

I just posted exactly what you're asking for a few hours ago.

I don't think anyone is suggesting that 1dice1 shouldn't be paid his winnings. Do you think I enjoyed sending nakowa his 10,000 BTC payout after he had an amazing run of luck?  I didn't, but what choice did I have?  But how can we help him?  ED has his coins and is delaying paying them out.


I don't think yet another little just-dice clone site going down because of crappy coding or scammy operators would really surprise anyone. It has happened before and surely it will happen again.

If anything, each time one of these small sites fails it serves to show people not to trust places with no reputation and to stay with the established sites that have a history of reliability, trustworthiness and good customer support.

Does /news/sponsored-stories/ mean you paid for the article? And if so wouldn't it be better described as an advertisement?

Virtex has been trading BTC/CAD for years, using the name Virtex. It's just rude to trade on their good name. If the professionalism of your exchange is anything like that of your writing, customers would be well advised to steer clear.

Edit: I only found your site and this thread because I clicked on an ad that said Virtex was launching a new trading platform. I thought it was the real Virtex, who I trust, not some noob using their good name. I imagine such confusion isn't unusual.

All your cash is kept in a bank vault which we keep locked for your safety. We open it to the public less than once a day, minimising exposure.

Does theymos know the time of the contract?  It seems this would be a prerequisite.

I expect you just need practice. 

That profit chart in full (including your previous visit):

Here's a list of weekly returns for investors, along with a cumulative 'return so far' week by week.  All numbers are after commission was taken, so if you invested on the first day you would be looking at a real gain of 39.59% overall:


The last line is this week so far, and so is subject to change, since there's another hour and a bit three and a bit hours left of this week.

If you invested at the highest point before nakowa's big hit (Sep 16 2013) then you wouldn't have regained your losses until around Jan 13 2014.

Edit: and since whenever I show people this they ask "what about Doge-Dice?", here are the figures for Doge-Dice:


Much better returns, in a much shorter time.  I guess the kind of people who have dogecoins are more into gambling than investing...

Edit2: side-by-side comparison:

It seems to be this thread is full of people arguing about a contact that nobody other than OP and Goat have read.

Isn't that a bit silly?  Why don't one of you post a copy of the final signed contract so we can at least see what both parties agreed to?

I agree with you on the rest of your point:


It's not my place to address that.  I run the biggest BTC dice site, Just-Dice.com;  I first came up with the idea of having visitors bankroll the site which everydice and many others have copied (and usually messed up), so when I saw you misunderstanding how that works I stepped in to explain it better.

As for regularly proving solvency, of course that's a good idea.  Any site that doesn't do it should be treated with suspicion.  It's easy to do, so why not do it?

Every Sunday Just-Dice publishes a list of investor balances, so you can check that your investment is included in the total, and we keep the coins in a well known address which we have signed with a message proving it is ours, so you can check that we really do have them all.

I've seen these two addresses mentioned in the JD chat:

(70707) <Ruru> 1EDCWwzPzuT5v9hmxCwrW5hCDWFyGcdpeg and 1EDCWx4aJ5bT3ztma8wqT3CyTRbd9uSA8K

They seem to be "ED Cold Wallet" vanity addresses, and so probably are.

You don't seem to understand how the site is meant to work.

If there's 300 invested and a player wins 100, there's then 200 invested and 100 in the player's balance.  If the remaining investors pull out 180, there will be 20 invested and 100 in the player's balance.

You'll look at the site and say "the player is trying to withdraw 100 but there's only 20 in the bank, oh noes!" but that's a misunderstanding.  The site has the 100 still - as soon as the player won it, it was taken from the bankroll and put into the player's balance.  It was no longer available for the investors to divest.

So there *should* be enough to cover the losses, even if the invested amount goes to zero.

tldr: the site is supposed to have enough coins to cover the total invested PLUS the total in player balances