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Race To Mine Bitcoins Drives Enthusiasts Into the Chip Making Business

holy_calamity writes "MIT Technology Review looks at the small companies attempting to build dedicated chips for mining Bitcoins. Several are claiming they will start selling hardware based on their chips early in 2013, with the technology expected to force many small time miners to give up. However, as happened in the CPU industry, miners may soon be caught in an expensive arms race that pushes development of faster and faster chips."

62 of 320 comments (clear)

  1. Great by Anonymous Coward · · Score: 5, Insightful

    An unregulated currency plagued by theft and controlled by an elite cabal of basement-dwelling enthusiasts who can afford the thousands of dollars worth of hardware to drive smaller players out of the market. I'm sure nothing will go wrong.

    1. Re:Great by Anonymous Coward · · Score: 5, Insightful

      Bitccoin is partly regulated. Inflation is regulated by the laws of math. Better than the government printing money at the whim of bad political agendas.

    2. Re:Great by Anonymous Coward · · Score: 4, Insightful

      The official Bitcoin protocol is voted upon by everyone participating in the network, either accepting or not accepting changes. The official client implementation, as well as a few other implementations in other languages, are open source.

      If that's "control by an elite cabal" I'm not sure Slashdot is the site for you.

    3. Re:Great by Squiddie · · Score: 4, Insightful

      Well, that shows how much you know about money.

    4. Re:Great by sg_oneill · · Score: 2, Insightful

      Remember boys and girls, in bitcoin rainbow and unicorn land, deflation is good.

      Like literally, the looneys recently celebrated the algorithm halving the new coin supply lol.

      I mean sure a recession is just another word for deflation (it really is) , but lets not sweat the details.

      --
      Excuse the Unicode crap in my posts. That's an apostrophe, and slashdot is busted.
    5. Re:Great by slashmydots · · Score: 2

      It is absolutely, 100% unregulated and uncontrollable by nature. Stop commenting on bitcoin stories if you have no idea how it works or what you're talking about.

    6. Re:Great by dadioflex · · Score: 4, Funny

      Remember boys and girls, in bitcoin rainbow and unicorn land, deflation is good.

      Like literally, the looneys recently celebrated the algorithm halving the new coin supply lol.

      I mean sure a recession is just another word for deflation (it really is) , but lets not sweat the details.

      Are you one of those clever spambots that assembles a comment from random words that kinda form a sentence?

    7. Re:Great by icebraining · · Score: 3, Insightful

      Well, at least he has a Nobel prize winner with him, one that the current Fed chairman claims to follow:

      I've always been in favor of abolishing the Federal Reserve and substituting a machine program that would keep the quantity of money going up at a steady rate.

      -- Friedman

    8. Re:Great by icebraining · · Score: 2

      I mean sure a recession is just another word for deflation (it really is)

      Facts disagree. There were multiple periods during the gold standard when deflation was coupled with real growth in output.

      See Good versus Bad Deflation: Lessons from the Gold Standard Era.

    9. Re:Great by IamTheRealMike · · Score: 3, Interesting

      Because you think Bernanke does? I don't think so.

      Are deation and depression empirically linked? No, concludes a broad historical study of ination and real output growth rates. Deation and depression do seem to have been linked during the 1930s. But in the rest of the data for 17 countries and more than 100 years, there is virtually no evidence of such a link.

      What you think of as mainstream economic thought is all too often little more than dogma, beliefs based on neat arguments that are never exposed to the harsh light of data.

      By the way, there's another term for what policymakers do with money printing. It's called a planned economy.

    10. Re:Great by Bill,+Shooter+of+Bul · · Score: 2

      You realize that bitcoin does not do that. There is a maximum number of bitcoin possible, after that deflation will kick in. Deflation is something any nobel prize wining economist would go to extremes to avoid.

      --
      Well.. maybe. Or Maybe not. But Definitely not sort of.
    11. Re:Great by Bill,+Shooter+of+Bul · · Score: 3, Interesting

      1)Although the official prize name is ."Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel". Its listed on the nobel prize website http://www.nobelprize.org/ That is not propagada, just common sense shortening of the name.

      2) No, he did not

      "“I agree with Milton Friedman that once the [1929] Crash had occurred, the Federal Reserve System pursued a silly deflationary policy. I am not only against inflation but I am also against deflation. So, once again, a badly programmed monetary policy prolonged the depression.”

      F. A. Hayek, interviewed in 1979, from Conversations with Great Economists: Friedrich A. Hayek, John Hicks, Nicholas Kaldor, Leonid V. Kantorovich, Joan Robinson, Paul A.Samuelson, Jan Tinbergen by Diego Pizano.

      “I think it is certainly true that ending an inflation need not lead to that long-lasting period of unemployment like the 1930s, because then the monetary policy was not only wrong during the boom but equally wrong during the Depression. First, they prolonged the boom and caused a worse depression, and then they allowed a deflation to go on and prolonged the Depression.”

      F. A. Hayek, interviewed in 1977

      http://hayekcenter.org/

      --
      Well.. maybe. Or Maybe not. But Definitely not sort of.
  2. Um? by The+Grim+Reefer · · Score: 5, Interesting

    If mining Bitcoins was so profitable why would they want to sell the chips? Wouldn't they be better off keeping these chips and mining the Bitcoins for themselves?

    1. Re:Um? by Anonymous Coward · · Score: 5, Insightful

      Because the companies themselves don't believe in the Bitcoin. They're basically in the divining rod business. The only reason they wouldn't just use the rods themselves to find gold is because...

    2. Re:Um? by korgitser · · Score: 5, Insightful

      By that logic, you would want to do everything by yourself. Well, if you are a fisherman, you probably will not start a bank yourself even if being a bank looks profitable. Unless you are from Iceland, that is.
      There is a thing called the division of labour which says that if each of us specialize, we will get more stuff done as a whole. This is what built the civilization.
      Also, if you are looking into investing, you can choose between a high-risk high-profit endeavour, like building chips for your own mining operation, or a low-risk low-profit endeavour, like building chips for other's mining businesses. By going the second route, you can hedge yourself against the uncertain final success of bitcoin, while pulling your profit from the general public's current and certain interest in bitcoin.

      --
      FCKGW 09F9 42
    3. Re:Um? by ThatsMyNick · · Score: 2

      May be, because, sealing chips is a faster way to make money? If I were given two options one is quick but less money, other takes time and makes more money, I would choose the quick.

    4. Re:Um? by ArcadeMan · · Score: 2

      You could summarize what you said with a quote from Mark Twain: "When everyone is looking for gold, it's a good time to be in the pick and shovel business."

      To summarize the summary of the summary: people are a problem.

    5. Re:Um? by ourlovecanlastforeve · · Score: 5, Insightful

      Most of the money made during the gold rush was made by merchants selling mining and panning equipment.

    6. Re:Um? by NitroWolf · · Score: 4, Insightful

      If mining Bitcoins was so profitable why would they want to sell the chips? Wouldn't they be better off keeping these chips and mining the Bitcoins for themselves?

      If BFL were to mine instead of selling the chips, they would quickly have more than 51% of the network hashrate and the confidence in the bitcoin network would erode and the value would drop. It doesn't make any sense for one entity to mine all the bitcoin and devalue the currency... then it's worth nothing and it was for naught. No, it's far better to distribute the hardware far and wide, making it impossible for any single entity to gain a controlling portion of the network.

      No, it doesn't make any sense for BFL to mine with their own hardware, it makes much more sense to grow the bitcoin network and for BFL to supply the hardware to do so.

    7. Re:Um? by jamesh · · Score: 2

      If mining Bitcoins was so profitable why would they want to sell the chips? Wouldn't they be better off keeping these chips and mining the Bitcoins for themselves?

      Unless the chips had backdoors in them...

    8. Re:Um? by Anonymous Coward · · Score: 2, Funny

      You're a VB programmer, am I right?

    9. Re:Um? by TFAFalcon · · Score: 4, Insightful

      So what are you trying to say? Changing the owner of the equipment won't make it make more/less money. So it either produces enough money to pay for itself or it doesn't. And if the companies are selling it, the answer is probably that it doesn't or they'd just keep it and mint for themselves.

    10. Re:Um? by Lagmo · · Score: 4, Informative

      Actually one of the more serious projects(ASICMINER) DO plan to use the first batches of chips to compensate the IPO investors by using them for mining and later to possibly help fund more R&D and production runs. Additional and future income will be based on sales of the hardware

      And since this is /. Preliminary chip info:
      Built on 130nm node process (approximately comparable to the Pentium III generation)
      It'll use a 15 x 15mm BGA package.
      It's expected to run at around 200-300Mhz
      It'll be a couple orders of magnitude more power efficient than GPUs and serveral times more than current FPGAs at hashing the SHA256 algorithm.
      More info here: https://bitcointalk.org/index.php?topic=99497.980 and older (but more geek bait): https://bitcointalk.org/index.php?topic=91173.0

      Project is only about 2/3rds of the way through the foundry process, so atleast a month left till these chips could be active on the BTC network.

    11. Re:Um? by rerogo · · Score: 2

      Chip production is very similar, though the prices I usually hear quoted for the first unit (I am a student, so these may be out of date) are usually somewhere in the mid-hundreds of thousands. And the incremental cost (the cost of chip #2) is as low as pennies, depending on how big the chip is.

    12. Re:Um? by Fnord666 · · Score: 2

      SOME people are the problem, and SOME people are the solution

      and SOME people are part of the precipitate.

      --
      'The tyrant will always find pretext for his tyranny.' - Aesop's Fables
    13. Re:Um? by tftp · · Score: 2

      If growing cotton was so profitable, why would Monsanto want to sell seeds?

      In this case Monsanto would need land and workers and sales channels, which they don't have. Note also that farmers are subsidized, but a large corporation may not qualify, thus further skewing the comparison.

      But a company that makes machines for making money would only need a place on a shelf and a little electric power. That is always available.

    14. Re:Um? by Tuxavant · · Score: 2

      Or perhaps they do absolutely believe in bitcion and want it to be as diverse and strong as possible. Their movitivation in this case would not to become the sole owners of a shit ton of bitcoins, but the expidited downfall of other fraudulent currency systems and/or political change. There are people like that.

  3. Re:Interesting but why? by Anonymous Coward · · Score: 3, Insightful

    These are ASICs. The Bitcoin mining scene has already gone through its FPGA phase.

  4. Remember the Gold Rush lesson by DigiShaman · · Score: 4, Insightful

    During the Gold Rush, it was the tool and equipment suppliers that made out filthy rich, not the miners (except for a lucky few).

    --
    Life is not for the lazy.
    1. Re:Remember the Gold Rush lesson by ArcadeMan · · Score: 5, Interesting

      What you just said is a quote from Mark Twain: "When everyone is looking for gold, it's a good time to be in the pick and shovel business."

  5. Yes but by Spy+Handler · · Score: 4, Funny

    if you can buy the hardware on credit,

    1. use the hardware to mine new BitCoins
    2. pay back the hardware vendor with your BitCoins
    3. ???

    1. Re:Yes but by lister+king+of+smeg · · Score: 2

      you mean like just before the great depression when people started to by stocks on credit and pay them off with the returns? yeah that worked out well for everyone involved.

      --
      ---Saying gnome 3 is better than windows 8 not so much a compliment as it is damning with light praise.
    2. Re:Yes but by mysidia · · Score: 2

      This is barely any different from buying a house on interest-only loan, in anticipation of being able to flip it a few years later for a huge profit, after the skyrocketing home values lead to increase in equity.

  6. Re:and here i was by WrecklessSandwich · · Score: 2

    thinking all the stupid articles about bitcoin have stopped.

    You want a real currency? they're called gold and silver. They have lasted thousands of years, and will last thousands of years more, short of us figuring out a way to create them in the lab.

    Not a stable currency for long.
    http://www.planetaryresources.com/

  7. Not really worth it with current technology by ourlovecanlastforeve · · Score: 5, Insightful

    I was mining bitcoins with two AMD Radeon 9790 cards and was barely turning a profit. The problem is that the electricity cost to run the computer and the video cards is very expensive. It tripled my electricity bill. Then the difficulty was doubled, now I'm making negative profit. There is very little chance that if I continued to mine, the bitcoins I have in my wallet would ever become worth enough to make the money back. The same is true for everyone else: The more GPU's you add the more electricity costs and so you need so much hardware to break even that you'll never go into profit. The only hope is that you're one of the lucky few first people to receive one of the ASIC units from the two companies that claim to be close to shipping. Of course neither of those companies has actually shown a working unit even though they've taken thousands of orders (including two orders from me, one to each company).

  8. Re:Bitcoins are junk... by alvinrod · · Score: 3, Insightful

    Precious metals are just as worthless as fiat currencies in most scenarios where a collapse occurs. Unless there's another fiat currency to exchange your lump of gold for, it won't do you any more good than paper money. No one will want it and you won't be able to easily exchange it for anything that's actually useful. Any currency is just a proxy for the idea of wealth. If shit hits the fan hard enough that the several local currencies become heavily devalued, it will probably happen on a global scale as everything is so intertwined at this point.

    Precious medals will eventually become valuable again over a long enough period of time, but they won't guarantee that you'll see that time. Depending on the severity of the collapse, means of protecting yourself, food, and other basics to ensure survival are far more valuable, but knowledge is probably the most valuable currency available. What good is a mound of money if you're dying and don't know how to stop it?

    Precious metals suffer from the same problem as any other form of currency: it's only as valuable as everything considers it to be or as someone will pay to use it to produce something else.

  9. Actually money is debt (sorry to sound crackpot) by isopropanol · · Score: 4, Interesting

    Actually nearly all money in circulation is created as debt, which must be repaid with interest (that was created as debt that must be repaid with interest). Governments printing a little money (say enough to pay for their entire non-capital, non-military budget AND eliminate poverty) would probably help the economy so long as it was done quietly. In countries with a high currency due to a single resource being exported the effect could be even bigger. Of course this only works in countries that have their own currency (so not most of the eurozone) and the central bank is not a privately held cartel (so not the USA)

  10. Something people seem to forget: by Anonymous Coward · · Score: 2, Insightful

    Bitcoins don't just require an investment of cpu/gpu time and electricity. They also require an investment in disk space as well. I finally got around to seriously mining on a 3 year old video card, mostly just to experiment and finally see what the fuss was about, while getting a bit of 'free' heating for the house out of my videocard.

    Long story short: 3 months of mining on a 'low-end' card (70~MH/s) has netted me a total of ~0.25 BTC. At current rates that's around 3 dollars worth of bitcoin (assuming a 12 dollar rate, I've seen it from the low 11s to mid 12s in the past month or so.). Mining is already cost ineffective for anyone who's not running cutting edge hardware, and worst yet wastes huge amounts of disk space to verify the blockchain (I'm up to ~5.5 gigs for the current blockchain, and there's still another.. 17 million BTC to go before mining is exhausted, not including what would happen if there was tons of BTC transfers to verify) And in order to 'recieve' your bitcoins you need to have a complete blockchain image to pick them out of, which will then show how many BTC you have. You would probably at current mining levels be better off brute forcing passwords to miner's accounts, BTC recieve keys (since unless you spent them they're all waiting in the blockchain for someone to swipe.). or running exploits against either the BTC exchanges or miners to gain access to pre-mined coinage.

    While it's a cool experiment in alternative currency, it's just as intangible as fiat currency and unfortunately requires the processing capacity of a large base of miners to stay ahead of the 'pure processing' curve for BTC theft (If someone were ever to have more processing capability than the Bitcoin network itself, they could essentially hijack the entire blockchain and claim their fork as legit due to having more 'legitimate work' processed than the actual network did, at which point the currency will collapse. This isn't likely to be much of a problem while mining demand is still high, but unless the worth of bitcoins goes up to match the cost of electricity, fewer and fewer people will be mining heavily, which will lower the barrier to hijacking the blockchain.

    The fact that more people didn't flag the potential abuse case in this (it was actually in one of the security reviews of bitcoin a year or two back), and consider how/when it could happen, just shows how shortsighted so many of the bitcoin miners are in their quest for 'free' money. Much like the gold rush there's a limit on return for when it's worth making the trip, and for bitcoin that point is already past for all but the most well funded expeditions.

  11. Re:Actually money is debt (sorry to sound crackpot by sg_oneill · · Score: 2, Funny

    The US treasury is not a privately held cartel lol.

    Seriously, delete the rothman lizard people conspiracy videos from your HTPC dude.

    --
    Excuse the Unicode crap in my posts. That's an apostrophe, and slashdot is busted.
  12. What a waste by CptJeanLuc · · Score: 2

    From a society-level point of view I see a business model which consumes resources for hardware, energy for operating the hardware, and man-hours spent planning and operating the mining setup. And what is created? Nothing at all. Just some half-random redistribution of wealth based on a dubious scheme. Participating in this type of setup seems about as good an idea as being in the bottom 1-2 layers of a pyramid. May I suggest visiting a casino instead; probably a lot more fun, and consumes less of the planet's resources.

  13. Because no matter the speed, only a fixed amount i by llZENll · · Score: 2, Informative

    As I understand it, no matter the speed of calculating, there are only a set number of bitcoins given out per time, for one year this is 1,310,400 BTC, which are currently worth $13 so roughly $17M total will be awarded. Your amount is only based on what percent of the mining force you represent, it will never go over this. So lets say butterfly could dominate and take 50% of the computational force (which is highly unlikely since there are 5 companies making ASICS and the huge stock of FGPAs and GPUs still online), regardless this would bank them perhaps $8M. Making a HUGE assumption the exchange rate of BTC doesn't fall, which I think it will (explained below). In threads on butterflys website you can read that they have already sold 20k units, and are expecting 2 more rounds of 30k units each, at $150/pop this is $13.5M, already over what they would expect to make mining themselves. Note manf costs are irrelevant in comparisons since butterfly has to make the units if they keep themselves or if they sell them.

    I think the exchange rate price is going to tank for 2 reasons, first it will take a while for the difficulty to catch up with the new onslaught of computing power, as is always the case since it is adjusted once per week, during this time there will be a flood of BTC on the market driving the price down. Secondly you will see a huge shift of BTC production from small groups with GPUs to much larger capital intensive groups with ASICS, this is not a graphics card you are using in your spare time, this is a custom built piece of hardware built solely for the purpose of speculating on mining bitcoins, and is worthless otherwise. This will vastly reduce the population mining BTC and thus reduce the number of people using and interested in BTC. As the BTC mining industry ramps up it may be the very thing that unravels interest in BTC. Coupled with more BTC for sale it could crash the market, again.

  14. Re:Bitcoins are junk... by Agent+ME · · Score: 3, Interesting

    I'd advocate choosing some other useless and less expensive random "commodity" to stockpile along with your guns and food.

    Suddenly, the bottle cap currency in the Fallout series makes perfect sense.

  15. Re:Actually money is debt (sorry to sound crackpot by Lord+Kano · · Score: 3, Insightful

    The Federal Reserve bank is.

    LK

    --
    "Hi. This is my friend, Jack Shit, and you don't know him." - Lord Kano
  16. Re:This hardware could be a problem by slashmydots · · Score: 2

    Ha ha ha ha ha, very funny :P but for the record, BFL could out-process the entire network with their current inventory of ASICs by running them all at once in a private pool. Then they could form a block with fake data before anyone else and then verify it themselves and place it in the chain. It's called a >50% attack. But that would cause a massive crash and destroy the entire bitcoin system and they'd go out of business so nobody thinks anyone would be stupid enough to do that.

  17. Re:The Processing Arms Race Again? by slashmydots · · Score: 2

    I feel the need to remind you that you can simply buy BTC on the exchange. You don't have to actually mine it. I sell computer hardware on the forums for BTC and get more that way than from mining. And obviously anyone can run the trading client that actually sends the money without any massive CPU usage. The mining clients maintain transactions and process blocks, sort of for a commission. The client runs the actual trades. You can use bitcoins all day every day without ever touching mining.

  18. Re:Actually money is debt (sorry to sound crackpot by Anonymous Coward · · Score: 3, Informative

    The US treasure is not a privately held cartel. It also doesn't print money.

    The US Federal reserve IS, and DOES. To quote Wikipedia ". The Federal Reserve System has both private and public components, and was designed to serve the interests of both the general public and private bankers. "

    http://en.wikipedia.org/wiki/Federal_Reserve_System

    So, while what you said is true, its irrelevant. The people who make the money, are bankers. Banks are insolvent. The Feds job is to keep banks afloat. The banks benefit. Banks are privately owned. Etc. Etc Etc.

  19. Re:Actually money is debt (sorry to sound crackpot by isopropanol · · Score: 2

    US treasury is not the US' central bank, the Federal Reserve is.

  20. Bad for stability by Deliveranc3 · · Score: 2

    Bitcoin is susceptible to having the block chain taken over by authorities, some of whom have built up significant processing power.

    It's too bad about this whole thing since BTC is more stable the more people are doing the cryptography. It was however predictable with a deflationary (less being produced over time) and obviously dedicated hardware being developed.

    Oh and for those who don't know on December 1st the amount of BTC entering the market was cut by 50%... so far price increase is about 20%

    1. Re:Bad for stability by NitroWolf · · Score: 2

      The ASIC era will aim to fix the 51% attack problem... or at least make it extremely costly. The farther we get into the ASIC era, the less and less likely and more costly it will be for someone to subvert the network.

      1 year ago, it would have taken less than 1 million dollars to wreck the bitcoin network. 1 year from now it will take at least $100 million, if not more, assuming the price of BTC doesn't tank or something.

      Granted, $100 million is pocket change for some large corporations and of course governments, so the threat is still there. But as time goes on, the cost starts to rise further and further out of reach of all but richest of entities, until it gets so costly as to be unfeasible. At that point, it's cheaper to wage a legal or physical war, but that's another problem entirely.

  21. Re:Actually money is debt (sorry to sound crackpot by tftp · · Score: 3, Informative

    Google is useful, and GP is correct. The US Department of Treasury is not a bank at all, let alone the central bank. Per Wikipedia:

    The Treasury prints and mints all paper currency and coins in circulation through the Bureau of Engraving and Printing and the United States Mint. The Department also collects all federal taxes through the Internal Revenue Service, and manages U.S. government debt instruments.

    The Federal Reserve System (also known as the Federal Reserve, and informally as the Fed) is the central banking system of the United States.

  22. Re:Actually money is debt (sorry to sound crackpot by CrzyP · · Score: 2

    You are wrong. The Bureau of Engraving and Printing prints money and the Mint produces coins. The Fed does NOT. I work(ed) for it and we just move it between commercial and private banks, physically and electronically. Thanks for reading our wikipedia page in full.

  23. Re:Bitcoins are junk... by Rockoon · · Score: 4, Insightful

    Guns and government don't uphold the value of a currency. Trust does.

    If you can pay your taxes with it, then it has real value.

    If you can manufacture things with it, then it has real value.

    If you can eat it, then it has real value.

    If you can't do any of those things with it, then it has only speculative imaginary value.

    --
    "His name was James Damore."
  24. Re:Nerd gold by s73v3r · · Score: 2

    It does kinda make me want to invent my own internet currency, so I can get huge amounts of money.

  25. Great side-effect by Arancaytar · · Score: 3, Interesting

    Associating monetary value with computing cycles would eventually incentivize the development of faster and better technology.

    I just hope that whatever these guys come up with will also have applications in the real world.

  26. Re:Actually money is debt (sorry to sound crackpot by lxs · · Score: 3, Funny

    the rothman lizard people

    What? The Rothschilds and the Mothman had viable offspring? We're all DOOMED!

  27. Re:Bitcoins are junk... by pantaril · · Score: 2

    If you can pay your taxes with it, then it has real value.

    If you can manufacture things with it, then it has real value.

    If you can eat it, then it has real value.

    If you can't do any of those things with it, then it has only speculative imaginary value.

    So dollars have only speculative imaginary value for me? (Note i'm not paying my taxes in dollars)

  28. Re:Actually money is debt (sorry to sound crackpot by IamTheRealMike · · Score: 2

    Are you being deliberately obtuse? It's quite clear that when people refer to the Fed "printing money" they don't literally mean running printing presses or forging coins out of molten metal. They are referring to the process by which they type a new balance into their own accounts and then proceed to use it for, eg, buying bonds. This is creating money from nothing and we use the term "printing" to refer to it, as that's a simple metaphor everyone can understand.

  29. Re:Actually money is debt (sorry to sound crackpot by isopropanol · · Score: 3, Insightful

    Comments like this are why I added "(sorry to sound crackpot)"

    It is a great shame that any discussion of novel monetary policy which mentions the ownership of the Fed as a limiting factor gets accused of being associated with schitzophrenic delusions and/or anti-semitism.

    The US Federal Reserve Bank is literally a privately held cartel. This is a statement of fact, and it has monetary policy implications. My original comment was about a specific method of quantitative easing which would be more difficult without a national currency or with a privately held central bank. This is not a conspiracy theory, it is monetary policy.

    Most money now does enter circulation as bank account balances countered by interest bearing loans. This is a very usefull system. Without it I and probably the vast majority of people in the western world would not own any real estate. Sadly though it has nasty side effects in a contracting economy. This is not a conspiracy theory, it is economics.

  30. Re:This hardware could be a problem by JesseMcDonald · · Score: 2

    Then they could form a block with fake data before anyone else and then verify it themselves and place it in the chain. It's called a >50% attack.

    True, but note that there are limits on what you can do with a "50% attack". Most importantly, it won't let you spend anyone else's bitcoins, as that still depends on access to their private key. If you control 50% or more of the network then you can basically do two things: first, you can delay other peoples' transactions indefinitely by refusing to include them in your blocks; second, you can reverse past transactions by allowing them to be included in a block, and then mining a new, longer chain which doesn't include the transaction.

    The second case is basically the same as chargeback fraud, which can easily be committed through existing payment networks, except that the Bitcoin version is much more expensive for the attacker.

    The protocol was designed to make "50% attacks" uneconomical in the extreme. They really only have value to someone interested in spending large amounts of money on mining specifically to undermine the network, which does not fit BFL's profile.

    --
    "The state is that great fiction by which everyone tries to live at the expense of everyone else." - Bastiat