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201  Bitcoin / Bitcoin Discussion / Re: SHA-256 hacked, man gets away with 7 blocks in 10 minutes on: June 22, 2011, 02:57:49 AM
No.  It's statistics.  We've been at it 2 years, and there's gargantuan amounts of processing power behind this.  It was bound to happen eventually.


Eventually = right after a series of high profile hacks. Interesting.

Hrm, a huge amount of publicity bringing some heavy computing power to the stage, increasing the odds of this happening?  Interesting.
202  Bitcoin / Bitcoin Discussion / Re: SHA-256 hacked, man gets away with 7 blocks in 10 minutes on: June 22, 2011, 02:51:43 AM
Are you sure it is the same person/address? AFAIK, this could happen at any time due to the nature of the hashing process, it just usually doesn't...

7 in a row though, when the average time between is 10 minutes? The chance of it happening randomly is infinitesimal. Someone is clearly gaming the system somehow.

No.  It's statistics.  We've been at it 2 years, and there's gargantuan amounts of processing power behind this.  It was bound to happen eventually.

you don't have to break (=find collision) it entirely, just a few first bytes Smiley

i always thought the proof of work bitcoin uses is kind of weird...

Finding a collision isn't breaking SHA256.  Breaking SHA256 (or at least, any manner of breaking that would matter to us) is finding a FAST and EFFICIENT way to find a collision, other than brute forcing.  There is no way to do this that is currently known, and it's stood up to many many cryptographic tests and analysis, people trying to hack it for years.
203  Other / Obsolete (selling) / Re: Selling Mining Rig with 2x 5850's for BTC on: June 20, 2011, 07:38:08 AM
Would you sell the two 5850's individually?
204  Bitcoin / Bitcoin Discussion / Re: What mtgox number are you? (from DB leak) on: June 20, 2011, 06:12:15 AM
Wait, that means... There are MULTIPLE grues around these parts?  I get the feeling I'm about to be eaten...
205  Bitcoin / Bitcoin Discussion / Re: What mtgox number are you? (from DB leak) on: June 20, 2011, 03:01:55 AM
from accounts.csv (you know which one) Wink
Quote
4856,gruez,free.133ch@gmail.com,$1$ZyEFTEke$cWSfcMkc7pjPmHLzMt7dv0

ps. this idea was stolen off of someone else.

Actually, aren't you

Quote

56   grue   grue@joshua.in   9d7c5870687bd54118663f5422ea2b9c


?
206  Bitcoin / Bitcoin Discussion / Re: DOWNLOAD LINK FOR MTGOX COMPROMISED ACCOUNTS CSV on: June 20, 2011, 02:57:14 AM
If they cant get the passwords because they're hashed, then... ummm, how did they do it?

What do you think Bitcoin miners are doing? Cracking hashes.

What do you think the passwords are protected with? Hashes.

So it's easy to crack hashes passwords, takes a few minutes per password, as long as it takes to crack a new Bitcoin block (about 10 minutes) is how long it takes to crack a hashed password.

That's not quite accurate.  Miners are tweaking one value in a block of data in order to find any password WITHIN THE DIFFICULTY.  Finding a hash that is lower than a set value is far easier than finding a very specific existing password.  Essentially, cracking the password would be solving the highest difficulty block possible.  (Also, Miners are working on SHA256, much harder to crack than simple MD5...)
207  Bitcoin / Bitcoin Discussion / Re: Mtgox's official story is wrong. The BTC of many accounts was sold: proof inside on: June 20, 2011, 02:47:14 AM
I believe a hacker got hold of everyone's account at mtgox. This hacker then executed a looping script that logged into a number of accounts one by one and issued a sales order for the full BTC balance in these select accounts. After 2 minutes, the loop was completed and all BTC held of the mtgox's clients accounts were offered for sale on the mtgox market.

This drove the price of BTC down to almost nothing. mtgox as a withdrawal limit of 1000$ equivalent BTC per 24 hour period. With the price to almost nothing, the hacker could withdraw almost any amount of BTC he wished from different accounts. I think in a few days or weeks some people will learn they have lost a fortune in this attack.

We must face the reality that mtgox is short on BTC. They do not have the BTC they claim they have.

The official story by mtgox states that a single large account was compromised and someone sold everything. This story does not make sense for a number of reasons. First, every account was compromised so why would the hacker limit himself only to one account.

If you were watching the sales order book in real time during this event, you would notice that there were a sequence of hundreds of small sales ranging from 0.1BTC to 2BTC. This is inconsistent with the one big sellout story. The picture below indicates some of those sales. Please refer to this youtube to see how it happened live. http://www.youtube.com/watch?v=T1X6qQt9ONg



Again this is inconsistent with the one big account sold off story. Many mtgox accounts have small amount of BTC coins left hanging in them (because of a withdraw bug for small amounts). We are seeing these small sellouts in the order book.


TL:DR; If you look at the sales manifest, There are hundreds of 0.1BTC to 0.5BTC sales orders placed one after the other. This indicates that a script is looping trought the accounts and issuing a sales order. If it was just 1 big account, there would be 1 sale for 250k BTC. This fact, combined with the release of all mtgox accounts / password moments later makes it impossible for me to believe in the official story.






The thousands of trades was not from thousands of small sell orders, but from thousands of small buy orders.  "I want to sell 1000 bitcoins for 0.01 btc" ends up being (if there is not one large buy order out), "I've been waiting to buy 10 bitcoins at 17.5, gimme" "I've been waiting to sell 5.4 bitcoins at 17.4, gimme", etc.  All trades happened within a single second, because it was simply the mtgox software looping through buy orders and fulfilling them.
208  Bitcoin / Bitcoin Discussion / Re: 0.10 Bitcoin FREE ! BitcoinBoom is Looking for ... on: June 18, 2011, 12:41:45 AM
Everyone is so quick to shout scam, but I feel that term is becoming watered down.  If you were scammed, he would have netted something of value from you, leaving you at a loss.  "Trick" "fooled" and "misled" are more accurate here, as in the end, all you've done is spent 30 seconds of your life giving someone a very very limited amount of publicity.
209  Bitcoin / Bitcoin Discussion / Re: 90 Cents is the Best Bitcoin Value on: June 17, 2011, 11:38:30 PM
We don't need to do anything to influence the market.  If that is indeed the ideal price, then the price will drop from where it is due to lack of interest, and when it reached that point, merchants would begin trending towards bitcoins for the reasons you suggested.  If the natural equilibrium is higher, market forces will drive it to that in the long run.
210  Bitcoin / Bitcoin Discussion / Re: Who the F*** is this retard?? on: June 17, 2011, 12:15:52 AM
I think similar people made youtube videos in the early 20th century where they scoffed at the motorcar, stating that never would they give up their horse for such a silly, expensive, dangerous, and useless invention.

"Why, these auto-drivers -- it can't even FERTILIZE FIELDS!!"

"Paying for parts? I just pay for my oats! Stupid car enthusiasts!"

"I'm always towing out cars with my pack mule, ha ha"

Yeah, that sounds right... new ideas take time Smiley


"These cars things benefit early adopters."
211  Bitcoin / Bitcoin Discussion / Re: Who the F*** is this retard?? on: June 17, 2011, 12:06:58 AM
Heavier-than-air flying machines are impossible.- Lord Kelvin, president, Royal Society, 1895
 
The modern computer hovers between the obsolescent and the nonexistent. - Sydney Brenner in 1927
 
I think there is a world market for maybe five computers. - IBM Chairman Thomas Watson, 1943
Computers in the future may have only 1,000 vacuum tubes and perhaps only weigh 1 1/2 tons. - Popular Mechanics, 1949
 
I have traveled the length and breadth of this country and talked with the best people, and I can assure you that data processing is a fad that won't last out the year.  The editor in charge of business books for Prentice Hall, 1957
 
But what... is it good for?   
An engineer at the Advanced Computing Systems Division of IBM, commenting on the microchip in 1968.
 
Get your feet off my desk, get out of here, you stink, and we're not going to buy your product.  Joe Keenan, President of Atari, in 1976 responding to Steve Jobs' offer to sell him rights to the new personal computer he and Steve Wozniak developed.
   
There is no reason for any individual to have a computer in their home. - Ken Olson (President of Digital Equipment Corporation) at the Convention of the World Future Society in Boston in 1977
 
No one will need more than 637 kb of memory for a personal computer. 640K ought to be enough for anybody. - Bill Gates, founder of Microsoft, in 1981
 
I say to you that the VCR is to the American film producer and the American public as the Boston strangler is to the woman home alone.  Jack Valenti, MPAA president, testimony to the House of Representatives, 1982

The Macintosh uses an experimental pointing device called a 'mouse.' There is no evidence that people want to use these things. What businessman knows about point sizes on typefaces or the value of variable point sizes ? Who out there in the general marketplace even knows what a 'font' is ? The whole concept and attitude towards icons and hieroglyphs is actually counterrevolutionary ó it's a language that is hardly 'user friendly'. This type of machine was developed by hardware hackers working out of Xerox's Palo Alto Research Center. It has yet to find popular success. There seems to be some mysterious user resistance to this type of machine.- John C. Dvorak on why the Macintosh would fail, San Francisco Examiner, 1984
 
Two years from now, spam will be solved. - Bill Gates, World Economic Forum 2004
 
The Internet is a great way to get on the Net.  - Bob Dole
 
Only two things are infinite, the universe and human stupidity, and Iím not sure about the former. - Albert Einstein

Don't forget:

The internet is over.
-Prince
212  Bitcoin / Bitcoin Discussion / Re: New? idea: Gamecoins on: June 15, 2011, 11:48:36 PM
This does not stop someone from changing the:

if( verifyOwnership() )
    letPlay();

to:

if( true )
    letPlay();

through a mixture of stack/trace and reverse compilation.  Simply put, this is the exact reason almost no piracy countermeasure will ever work.  Any code you write to limit the gameplay, check licenses, etc. can be modified in the resulting binary.  You can obfuscate and complicate this process, but as was seen with Spore (which quickly became the most pirated game in existence simply due to spite of the heavy DRM) this just serves as an additional incentive to crackers.
213  Economy / Marketplace / Re: Bitcoin ETF: A Gamechanger? on: June 15, 2011, 11:42:13 PM
Security of wallets is a real issue for me. I would pay for a trusted party to look after my bitcoins.

Cheesy You can trust me.  I'll keep your wallet so secure, even YOU can't get to it. Wink
214  Bitcoin / Bitcoin Discussion / Re: Jacob Appelbaum: "Bitcoin Prediction: Major bugs in the near future ..." on: June 14, 2011, 12:26:37 AM
Where I first intended to ignore any posts containing any off-topics

Everything you've posted is off-topic.  This was about the speculation of one twitter user, not a boasting grounds for you to show of that you know how to use LaTeX.
215  Bitcoin / Bitcoin Discussion / Re: [WTF] MtGox moving ~432k BTC (4 to 12 million $) to a single address ! on: June 13, 2011, 04:49:42 AM
I think it's a bad idea to have all your Ƀ on 1 address, what if you won the lottery and randomly pulled that address when you made a new one? If I were them I would have no more than Ƀ1k per address.

Winning the lottery: 1 in 10^7
Taking the money from that address: 1 in 10^140

Hmm, only 20 times harder.

Math is so hard!

Apparently math is hard, because it's actually 10^133 times harder.
216  Bitcoin / Bitcoin Discussion / Re: losing https... on: June 13, 2011, 12:42:29 AM
Bitcoin.org moved to sf.net hosting, which unfortunately doesn't support https.

Dear god, the cat in your display picture is ADORABLE.
217  Bitcoin / Bitcoin Discussion / Re: [WTF] MtGox moving ~432k BTC (4 to 12 million $) to a single address ! on: June 12, 2011, 10:43:07 PM
How do you know it's MT.gox?
Because I know how to read the fkn blockchain.

Look, the guy asked you a legtimate question; how do u know its mtgox?  i know how to read the block chain as well and there is nothing to indicate its mtgox who did that tx. 

there are other addresses in the past that have accumulated over 400K BTC's as well if u click back thru this exact chain leading up to this tx.

The transaction shows where the money originally came from.  I receive bitcoins at Address A.  I send them to Mtgox.  Mtgox sends them to singular address.  Since I know what my address was, and the exact amount I transferred, I know it was mtgox doing the transfer because I can trace the btc back to myself.
218  Bitcoin / Bitcoin Discussion / Re: Jacob Appelbaum: "Bitcoin Prediction: Major bugs in the near future ..." on: June 12, 2011, 10:29:33 PM
Quote from: Stevie1024

Ignoring, for a moment, the glaring problems and misconceptions in your paper, it's horribly and arrogantly written.  You wrote down some internal musings that don't really flow into eachother, changed any "I"s to "the author"s, deemed it worthy to slap an abstract on it and convert it to PDF, and have posted it in nearly every thread you've posted in.  To me, It seems you like to play the scholar, and fancy yourself an intellectual without understanding how to write a cogent and thorough paper.
219  Bitcoin / Bitcoin Discussion / Re: Bitcoin transactions made retroactively illegal? on: June 12, 2011, 07:11:08 PM
Best case scenario: Bitcoin transactions are legal and will remain legal. Worst case scenario: Bitcoin transactions are illegal and will remain illegal and you will not only be taxed tremendous amounts retroactively, but also put in jail!

Correction, Worst case scenario: The entropy death of the universe comes hundreds of billions of years earlier than science predicts and we all cease to exist as soon as I post this response.


Ok, I believe in the theory of extropy (http://www.youtube.com/watch?v=k4mHbUq-pb4) and the Law of Accelerating Returns (http://www.kurzweilai.net/the-law-of-accelerating-returns) rather than a heat death of the universe. But even if you are correct, the scenario with Bitcoin being illegal is more likely I think.  Wink Being put in jail is probably very unlikely, unless perhaps someone has traded millions of dollars, and that the authorities want to state a Bitcoin crackdown example.

More likely, yes, but not the worst case scenario. =P
220  Bitcoin / Bitcoin Discussion / Re: is there an open bitcoin - statement of account in the Blockchain? on: June 12, 2011, 06:15:22 PM
thanks, thats fine.

@Quantumplation

yes, i thought so. its not possibel to correlate two adresses.



It is possible, with a paper trail. If there are no way to figure out what the transaction is about, and the coins belongs to who, then it's difficult.

Right, but sans such meta-data, there's nothing that correlates two addresses.
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