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04-11-2013 , 02:09 PM
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So earlier today I convinced my dad to invest in Bitcoin and give me some money to get started. I told him that the value would increase and he would earn some $. But I was unaware of the attacks on BTC currently taking place. So now that I've lost my dad's money, I'm officially grounded until I can pay him back. (I'm broke). FML
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I'm looking into perhaps investing in some bitcoins. I'm on Coinbase and was about to buy my first bit coin for around $140, but then I saw that if I wanted to sell it back I would only get back around $70. Why is this? or am I just interpreting this wrong?
goldmine
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04-11-2013 , 02:10 PM
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Originally Posted by eh777
I know a lot more about investing than you
Your honestly worse than pathetic, it no wonder everyone trolls the crap out of you.. listen.. If you knew as much as you think you do you wouldn't need to come on here and announce it against lesser lifeforms than you. go back under your rock!

or maybe your just a insecure guy who knows your motives

Last edited by KennyJPowers; 04-11-2013 at 02:13 PM. Reason: Raintech is def smarter than you
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04-11-2013 , 02:10 PM
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Originally Posted by mustmuck
I don't claim any particular insight beyond what you'd come up with yourself, but my current guess would be 0 confirmation transactions for tiny transactions (chocolate bar, can of coke - a synchronized stealing of cans of coke seems unlikely to me) and a buffer account for larger ones (basically a successor to Visa/Mastercard, or I guess even the same companies).
Ya thats what I thought too but I am not sure. If a double spend costs 0 then you can consistently scam. Even if the value scammed is small, if it is easy to do it represents a credible threat.

To explain what I mean in greater detail, say you have an address containing 1 mBTC. You use this to buy something and right after, you make another transaction (a double spend) into another address of yours. Maybe its 50/50 which transaction goes through first but you still scammed half the value in equity.

I think that would mean that either you use verified addresses somehow potentially involving a third party; and/or a trust network is built (such as http://bitcoin-otc.com/trust.php.) But either way the end result being that you need trusted addresses in order to do 0confirm transactions (that are desired to be instant and confirmed)

Last edited by Alex Wice; 04-11-2013 at 02:18 PM.
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04-11-2013 , 02:15 PM
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Originally Posted by Shoe
MTGOX shutting down is terrible, expect a massive sell off when it comes back up..
circuit breakers

there is a reason they were implemented in NYSE and later all over the other exchanges in the world
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04-11-2013 , 02:16 PM
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Originally Posted by Nonfiction
goldmine
I fell out of my chair, then found another chair and fell out of it.
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04-11-2013 , 02:16 PM
whoever is too scared to get their hands dirty on a sketchy virtual currency made by an anonymous japenese hacker should just stick to T-bonds
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04-11-2013 , 02:20 PM
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Originally Posted by KennyJPowers
Your honestly worse than pathetic, it no wonder everyone trolls the crap out of you.. listen.. If you knew as much as you think you do you wouldn't need to come on here and announce it against lesser lifeforms than you. go back under your rock!

or maybe your just a insecure guy who knows your motives
hahahaha
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04-11-2013 , 02:25 PM
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Originally Posted by eh777
hahahaha
What do you do for a living out of curiosity?
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04-11-2013 , 02:28 PM
anyone got any thoughts on litecoins, whether they will jump up in value in the future?
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04-11-2013 , 02:31 PM
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Originally Posted by iversonian
i understand that, practically speaking, the encryption is unbreakable. but theoretically, it is. suppose there was a large enough wallet whose private key was lost, and BTC was expensive enough. can anyone do some rough back-of-the-envelope calculations to say how long it would take to crack it using x amont of computing power?
i will leave out the technical jargon, but if the Bitcoin protocol gets "cracked", then so do all major financial institutions in the world and that = big problems!
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04-11-2013 , 02:35 PM
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Originally Posted by bucktotal
i will leave out the technical jargon, but if the Bitcoin protocol gets "cracked", then so do all major financial institutions in the world and that = big problems!
well no, i meant cracking one specific 256 bit key by throwing an immense amount of computing power at it for an extended period of time, not "solving" the algorithm in general.
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04-11-2013 , 02:35 PM
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Originally Posted by Alex Wice
Ya thats what I thought too but I am not sure. If a double spend costs 0 then you can consistently scam. Even if the value scammed is small, if it is easy to do it represents a credible threat.

To explain what I mean in greater detail, say you have an address containing 1 mBTC. You use this to buy something and right after, you make another transaction (a double spend) into another address of yours. Maybe its 50/50 which transaction goes through first but you still scammed half the value in equity.

I think that would mean that either you use verified addresses somehow potentially involving a third party; and/or a trust network is built (such as http://bitcoin-otc.com/trust.php.) But either way the end result being that you need trusted addresses in order to do 0confirm transactions (that are desired to be instant and confirmed)
That's all very true. Of course, you've stolen the coke so the difference between you just running with it and doing the double spend is the extra time where the shop thinks you bought it legitimately. The longer you leave it before signing the new transaction the more likely it is that the shop transaction goes through instead (you'd need to do some testing to work out how much more likely, and I guess it'd depend on how well connected each of you were).

Thinking out loud (?) here, perhaps the merchant can hire another company to watch the addresses. This company is geared towards finding out about all transactions as quickly as possible and proliferating your transactions as quickly as possible. When the merchant takes payment it sends the transaction to said company which verifies that it doesn't know of any other transactions double spending it, at which time the merchant hands over the coke. As soon as the company hears of a double spending transaction it informs the merchant immediately. This head start in the proliferation of the transaction and quickly informing the merchant of the double spend could make it infeasible or at least not worth the risk, although obviously all this would have to be tested in practice. The existence of mining pools, while probably bad for bitcoin overall, could really help this particular case.
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04-11-2013 , 02:36 PM
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Originally Posted by Alex Wice
mustmuck do you have an idea of good longterm solutions to this problem of non-instant transactions? (Eg. trust networks, third party holding your buffer account, etc.)
Ripple?

Maybe Bitcoin just won't be used for point of sale transactions where there's a legitimate benefit to identification and instant verification.

There's still a huge market competing with Western Union, PayPal, and Visa for things like online orders.
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04-11-2013 , 02:38 PM
/looks at the last few days

Wow
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04-11-2013 , 02:39 PM
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Originally Posted by RaineTech
Except the stock market can't lag from DDoS attacks or high volumes creating lag. This is smart and necessary by mt gox. It's unfair for users to try and execute trades when they wont go through for minutes and by then price has already fluctuated immensely. Even with this temporary halt, the prices at other exchanges aren't crashing, most are holding steady at about 90. Also you can still get coins on/off mtgox right now, you just cant trade on the market (convert usd/eur to btc or vice versa.)

EDIT: Also it appears mtgox has decided that for 48 hours after resuming trading there will be no trading fees. Smart move by them.
They didn't pause trading when it was going up though to "cool down"
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04-11-2013 , 02:42 PM
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Originally Posted by MultiTabling
anyone got any thoughts on litecoins, whether they will jump up in value in the future?
I think they will drop a ton.. they were at .07 just over a month ago.
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04-11-2013 , 02:46 PM
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Originally Posted by MultiTabling
anyone got any thoughts on litecoins, whether they will jump up in value in the future?
Short-term, I think the outlook's quite good. When Mt. Gox gets it act together and starts allowing them to be traded, I think you'll see a positive spike. After that, I don't know.
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04-11-2013 , 02:49 PM
I see $50 on bitstamp.

Is this legit?
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04-11-2013 , 02:51 PM
Is it me or is there a huge misperception about bitcoins holders the we are not aware that this is an incredibly risky volatile holding? I assumed that was a given, if it is not then let me clear that up.
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04-11-2013 , 02:53 PM
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Originally Posted by iversonian
well no, i meant cracking one specific 256 bit key by throwing an immense amount of computing power at it for an extended period of time, not "solving" the algorithm in general.
i think the point is that there are already many fiat bank accounts in the world large enough to try this if it could be done. it can't (?)

also its not just the private key you likely need. there could be multiple passwords/2-factor auth/encryption along the way. very likely on large accounts.
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04-11-2013 , 02:54 PM
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Originally Posted by iversonian
well no, i meant cracking one specific 256 bit key by throwing an immense amount of computing power at it for an extended period of time, not "solving" the algorithm in general.
A guy I know saw some discussion (which he didn't link) about this idea of brute forcing one of the big orphaned wallets. The people in the discussion were apparently positing that if the difficulty of mining kept going up, at some point it would be a better use of resources to try and brute force a wallet. I had already thought about this concept in passing myself.

My point only being that this is definitely something a lot of people have been thinking about and undoubtedly someone is trying, but of course that doesn't mean much because it's so hard.
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04-11-2013 , 02:57 PM
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Originally Posted by bucktotal
i think the point is that there are already many fiat bank accounts in the world large enough to try this if it could be done. it can't (?)
Well, there is the difference that to brute force an online bank account for instance, you would need to connect to a bank's servers many trillions of times and they'd notice pretty fast.

(Not arguing that it's practical or anything though)
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04-11-2013 , 02:58 PM
Buying btc for stars/tilt
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04-11-2013 , 03:02 PM
whats the current price? would like to buy 20-30 BTC, can pay only Skrill
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04-11-2013 , 03:04 PM
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Originally Posted by iLLuS10n-
whats the current price? would like to buy 20-30 BTC, can pay only Skrill
looks to be around 70
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