Since everyone keeps talking about double spends, I did some more research for you guys. I was not aware that blockchain.info now alerts to double spending. The only site that currently has a double spend problem is SatoshiDice, due to the nature of their game. It is NOT easy to double spend on them at all, and they have modified it a bit to make it harder. Obviously it has not affected their bottom line, as the site earned $446k in february. BitPay has said they will implement merchant protection and offer insurance for instant purchases. The insurance will be negligible, given that double spending vs bitpay has never succeeded so they have a zero percent fraud rate. Green addresses can also be used to ensure zero percent fraud risk, but it is pretty darn close to zero percent the way the system is working now.
Bitcoin developer Mike Hearn recently said about an automatic double spend alert system:
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There was a paper published last year which proposed such a thing and analyzed it. I think everyone agrees it's a good idea, just somebody needs to make it happen.
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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.
256bit private keys are not crackable:
"If we built a Dyson sphere around the sun and captured all its energy for 32 years, without any loss, we could power a computer to count up to 2^192. Of course, it wouldn’t have the energy left over to perform any useful calculations with this computer. But that’s just one star, and a measly one at that. A typical supernova releases something like 1051 ergs. If all of this energy could be channelled into a single orgy of computation, a 219-bit counter could be cycled through all of its states. These numbers have nothing to do with the technology of the devices; they are the maximums that thermodynamics will allow. And they strongly imply that brute-force attacks against 256-bit keys will be infeasible until computers are built from something other than matter and occupy something other than space." --
Bruce Schneider
link to thread about it.
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Originally Posted by MultiTabling
anyone got any thoughts on litecoins, whether they will jump up in value in the future?
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Originally Posted by Rant
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.
Bitcoin was never meant to be the best at POS purchases, and it is not faster than paying with cash. It targets distance commerce. However, it has the potential to turn into a good POS payment system with things built on top of it. Many people think Ripple will be great for POS, but I don't know enough about it to comment, and it is very difficult to understand at this stage.
I see a lot of people talk about bitcoin's value for microtransactions. This is not the case. Broadcasting every transaction to every user is optimal for security, but not for doing tiny low value transactions. The fees will get too expensive. Something will emerge to take over microtransactions.
DeathAndTaxes had this to say about it:
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There is potential for alt-coins but the current crop of Bitcoin clones (including LTC) have no improved utility.
The first scenario is that Bitcoin fails and something superior replaces it. For example after a massive 51% attack the idea of a POS coin (possible POW combined with POS) will be seen as potentially superior.
The second scenario is an alt-coin carving out a profitable niche. Bitcoin has three major niches where it creates the potential for a superior alternative. High speed transactions, microtransactions, improve anonymity. However building a coin around one of these would require real research not just replacing SHA256 with another algorithm. Also no simply changing the block target time to 60 second or 30 seconds wouldn't acheive much either. I am talking REAL research, real out of the box thinking, coming out with a comprehensive system to bring VALUE to users.
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Originally Posted by kleinstein000
So since Mtgox has halted everything (cant even create an account), basically there is no way to get new money into an exchange to buy BTC? Is that right?
EDIT: nvm looks like I can create an account
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Originally Posted by taikogod
looking to buy btc for stars/tilt, PM me. up to $5k usd worth, possibly more
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Originally Posted by Lurkatron
Still want to buy for Skrill if anyone is interested, seems the market for buying is completely dried up on 2p2
I also want to buy for stars/skrill/vegas cash. Lots of smart money on 2p2, so no one selling. Just wire money onto bitstamp.