Now I just want to cancel my order, what should I do?

It's not a loophole but a feature(and my guess is, this feature is what made it more difficult for Gox to fix the ongoing problem).
When you withdraw you coins, if you input an internal bitcoin address (i.e. address with private key held by Gox), you will be presented with options: do "Open Transaction" or not. the "Open Transaction" is unchecked by default.  if you choose to go with Open Transaction, you tx will go through the blockchain, but otherwise gox will handle it internally by just updating their DB.

And currently internal transaction is not affected as stated by Gox.

title

I see what you mean, but in JD's case, everybody would just use the max leverage, then nothing would change. Because it doesn't necessarily raise the risk, as most people don't bet high.

Also this could be used in all kinds of cases, to name two:
1. P2P trading: the seller freezes btc before mailing stuff --> buyer gets stuff and send btc to real addr --> seller unfreezes the original btc.
2. IPO oversubscription.

One point of Bitcoin is to replace the greedy Wall Street with pure program, this is just one example.

P2P asset freezing protocol for Bitcoin.

There are some scenarios that the first party gives bitcoins to the second party just to let then freeze the BTC, in which requires unnecessary trusts. For example on Just-Dice.com, investors send way more BTC than the house needs to get more profit share, and the operator holds a huge amount of BTC in code storage just to freeze it.

This problem can be solved by "freezing address", from which the BTC can only be "spent" back to where they are from. For example, if Alice needs to freeze some amount of BTC of Bob's. Alice creates a freezing address, which can be verified by any one that it is a freezing address. Then bob verifies the address and send the BTC to that address. At this point, both Alice's and Bob's private key are required to spend the BTC, but Alice has to option to abandon her right by send back the BTC to Bob's original address, which unfreezes the BTC.

Cryptography is not my field but my guess is, with the bitcoin script system this can be done. Is this kind of system proposed before, or is it somewhere on the roadmap?


EDIT:
In the case of Just-dice.com,  investors would have to deposit to two addresses, one for freezing and another with much smaller amount for investing. Basically you make you btc frozen by the operator in exchange for the right to invest. For example:

Old system:
Total investment: 10,000
Max profit: 10,000 * 1% = 100
Your investment: 100
Your max lose(per bet): 1
Your trust the operator with: 100

New system:
Total investment: 1,000
Max profit: 10,000 * 10% = 100
Your frozen btc: >=100 (this 10x freezing rate is just an example, it's up to the operate to decide.)
Your investment: 10
Your max lose(per bet): 1
Your trust the operator with: 10

I was going to post something like this, but then I thought, hey, it's that obvious?

A company like Baidu, posting nothing but a message, showing nothing more than an address.

Now they accept BTC, how? via manual crediting? I'm not saying the news is not authentic, I'm just saying it must be a lot less significant than it sounds like.

Now my withdrawal just appeared on blockchain.info.

WITHOUT a fee, so they stole the fee of 0.005BTC.

Not much [1BTC-10BTC], but I was planning to sell it on another exchange, and now I missed the best timing.

Thanks for the info, I don't even know the tx, because I forgot to save the tx string. Now the only thing I know is the output address.

Now I know why my withdrawal transaction went missing.

I told them to hire some professional programmers on the support page, looks like I was right.

That's what I was doing, trying to get away from it.

Anyone else getting this?

I payed the 0.005BTC fee, it's been hours, nothing is happening even on blockchian.info

They gave the crap like " Few BTC withdrawals are delayed and the transaction should eventually go through . We will update you once the transfer is complete."

56798, thanks.

I'll make my first bet with that.

To the operator: why there is no clear explanation of how is the profit calculated?
The fact that people make a lot more money that expected is scaring.

The money is either from gamblers or from other investors.

I see what you're talking about, there was a guy got executed, and there were a lot of protests, because people think he didn't deserve death penalty, because he didn't get to see his family before executed, and probably because we don't have judicial independence here.

But he was running a Ponzi scheme.

I have no interest in defending the Chinese government but your words are misleading.

This contains zero interesting information:

"Shareholders who really do not want to follow the english thread, please wait for the to be opened dedicated board. you'll get a password for that board via email."

To summarize, he was just saying:
He'll do updates here rather than over there, and asked not to start new threads regarding IPO there.
there will be a dedicated board on btcman.com for Chinese shareholders.

And I made up those number just to explain the idea, not him.
This is just another possibility, GPU could still be as slow as 2x

I did a similar calculation, but then Koooooj@reddit pointed out that I was wrong. Because with a much powerful sieve, CPU gets less test to do for fixed number of output.

for example (with made up numbers):
before: 10000Numbers ---sieve--> 100Numbers ---test---> 1Number
after  : 10000Numbers ---sieve--> 10Numbers   ---test---> 1Number

this way, even we don't speed up the execution of Fermat test, the test time is down to 10%.

At least some of them.
Yesterday Aiwill said "there will be two big buyers getting in tomorrow." implying he knows them.

I'd do the same, I don't see why AM should be worth 1/5 of all the coins to be mined.