My 4 x 7950 (Sapphire Dual-X OC) mining rig with a Gigabyte GA-970A-DS3 mobo, 2x650W Cooler Master PSUs and high-power wireless usb adapter (only cause I leave it down in the garage where it's cooler and wi-fi is weak). Does around 2500 kh/s for LTC with cgminer on xubuntu. Boots of USB, no hard drive. The crate was just a plastic crate some restaurant was throwing away. Everything is held together with zip-ties

Very Nice!

Looks super! What kind of PSU is that? Powered risers?

The one with with the fan on the open side is probably coolest then the rest gradually run hotter as they suck in the air exhausted by the card beside it until the last one which runs the hottest.

Just curious - how did you figure out that only 1 of the risers needed to be powered? was it not working or is the riser the only 1x etc?

Ok thanks I will check that out!

Not sure if somebody has already posted - just saw it on slashdot.

http://www.computerworld.com/s/article/9246921/Mt._Gox_kept_exchange_open_despite_knowledge_of_large_scale_theft

http://slashdot.org/story/13/11/04/2247258/bitcoin-protocol-vulnerability-could-lead-to-a-collapse

Thought this would be of interest. The jist, I gather, is that due to how the Bitcoin protocol works you only need to control 33% of the mining power to successfully attack the bitcoin network (also see https://en.bitcoin.it/wiki/Weaknesses)

not sure this is even a problem at this point with the current state of the network but interesting...

Fiyat 550TL indi

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Arkadaslar,

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I found the advisory

http://fincen.gov/statutes_regs/guidance/html/FIN-2013-G001.html

And I quote


and the definitions of user, administrator or exhanger


Draw your own conclusions but it seems clear to me that unless you are in the business of buying / selling or exchanging bitcoins then FinCEN clearly does not apply.

Where did you get this information from? Please provide a source, it is false.

The aim of FinCEN is to control money laundering from US->Other countries.

FinCEN does not apply to personal transactions only to companies in the money transmission business e.g. Western Union.

A FinCEN Advisory from a little while ago made it clear that personal transactions are exempt.

Using this logic then selling gold, silver or anything of any value would fall under FinCEN? Even your pet rock.

The foundation's response is a nice read - response from California will be interesting.

I know - i wanted to respond to the poster who didnt think there was any waynfor the attackers to profit.

I dont understand - how do you explain drop in price? Someone has to sell a substantial amount of bitcoin at a lower price after the ddos attack for the price to dip. This is panic selling. People scared the price is going to go even lower and sell. This is the only way price can go down.

1. Ddos attackers attack mt gox

2. People panic and sell bitcoins pushing price down

3. Ddos attackers buy bitcoins at low price

4. Ddos attackers wait until price climbs and sell - make $$$

İ agree.

My issue is with the statement that the US is one of the least free countries in the world. İt's provided as is without a definition of freedom or evidence supporting it - ıf the poster really does believe that then i am curious how he / she reached this conclusion.

I don't live in the US, I'm not a citizen of the US but I've lived in countries which restrict my freedoms, especially freedom of speech much more than the US - and I mean restrict in constitutionally by law not in a vague / taboo way.

If you're going to make such statements you should provide some context and proof. When there are countries where you can be killed on the street for joking about a certain prophet or thrown in jail indefinitely for doing your job as a journalist or not being able to drive because you're a woman the US hardly seems like one of the least free countries in the world.

More specifically please list which freedoms the US restricts that MOST other countries do not? I don't mean restrict in a big brother / conspiracy sort of way, I mean restrict by law.

I think you misunderstood - they create uncertainty in the future of Bitcoin - i.e. will it survive the concentration of mining power that ASICs are being used for?

The real winners of ASICs are the companies that produce and sell them. Anybody mining with ASICs especially those high end ones mentioned will always see a declining return even if Bitcoin remains the same price. It's a losing battle, the more power they add to the network the more difficult if becomes and the less bitcoins they make. This is the reason that ASIC companies simply couldn't produce all their machines and turn them all on to make $$$ - after a couple of days the difficulty would shoot so high that it wouldn't make sense.