Ik ben naast mijn werkzaamheden in de softwarebranche een handel in Bitcoins begonnen. je kan ze in mijn webshop kopen met iDeal. De koers is iets hoger dan de reguliere exchanges. Daar staat tegenover dat je snel over je coins beschikt en als je geen iDeal wilt gebruiken mag je ook gewoon langskomen om kontant te betalen. De directe link naar de bitcoins op mijn site is: www.mtgox.nl Dus niet de bekende dotcom site maar .nl dus! mtgox.nl en intersango.nl naar jullie site laten verwijzen? Ik weet niet of hier echt regels over zijn, maar zelf vind ik het niet erg netjes. Ik zou zelf gewoon alleen mijn eigen naam gebruiken en het zeker niet leuk vinden als iemand anders die zou gebruiken met een andere tld. |
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The input of 512 bits consists of 80 bytes (400 bits) bitcoinblockheader, followed by 512 - 400 - 64 = 48 bits of padding containing all zero's except for the last bit being a one, followed by 64 bits length.
So the last 112 bits are known and can be used for anything and just replaced by 47*0 1*1 64 bits with value 400 for the length.
About the reporting back to the server, I don't know if there is place somewhere.
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5000 is a little to much I think, only 24*6*50 = 7200 / day are mined, so 5000 is almost 70% of total.
If you just mine 5% it is 360 BTC, somewhere like $1800 a day, it is much harder to notice so the chance of someone finding out is much less likely.
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Can you imagine if some mad scientist pointed his quantum computer at bitcoin, solved all the blocks in a split second at the beginning of a new difficulty re-target, then unplugged, leaving the difficulty at 10 billion. Would take the network a year to solve the next 2016 blocks to re-target to normal again  Difficulty increase is limited to 4X. Learn something new about bitcoin every day!  Can you provide a source btw? I found it at https://en.bitcoin.it/wiki/Target"A single retarget never changes the target by more than a factor of 4 either way to prevent large changes in difficulty. " |
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Woow, only $9.25 for 1.00 BTC !
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No, that's collision resistance of cryptographically secure hash functions  If I were you, I wouldn't settle for 6k BTC if you've actually broken SHA256 Note that finding 1 collision (which nobody ever managed to pull off so far, but could happen by chance although extremely unlikely) is by no means breaking sha256. Breaking sha256 = finding a method that, for any given sha256 hash (or a significant portion of all possible sha256 hashes), can generate data (within reasonable time) which has the given sha256 hash. Add one little thing, it must be faster than brute force |
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De grootste wilt zeker niet zeggen dat het dus de goedkoopste is hoor.
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Collisions in sha256 are possible, but at the moment only in 2^256 operations or 2^128 operations if you have enough memory for a birthday attack.
I'm sure some day a faster way to find collisions will be found, just like happened with md5.
But I'm also willing to bet another 10 BTC (I'm just not as rich as others) it won't happen this year.
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Toch denk ik dat dit voor sommige mensen wel aantrekkelijk kan zijn als ze niet online geld willen betalen en gewoon liever cash voor bitcoins willen ruilen.
Alleen voor mij persoonlijk dan weer niet, ik heb het liever online.
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It's still very easy to mine LTC on low spec CPU's.
It's also very easy to mine bitcoin on low spec CPU's. Doesn't mean it is profitable. |
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Why?
You can see how much each payment was and from what share/bond it came.
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If 2 singles deliver more than 1 module and costs less than $1500, why would anyone buy one for $1500?
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This is against the rules of blizzard, so I recommend not to do it.
Also, if anyone want to buy his/her way into the game, I would recommend waiting a little for the real world money auction house to come offline. That way you cannot be scammed and your play by blizzard rules so won't be banned.
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How can you swing the odds in your favor?
If you have 10% to win a bet, and you won it 10 times in a row, the 11th time is still 10% to win.
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Well, to be honest I doubt RAM can affect the miner's performance. All the memory used by the miner should fit into L2 cache.
I am not speaking of memory in terms but talking about the memory timings, tighter-lower ram timings = greater performance in any application . If you have several different sticks of ram "value to performance" and test it with the same processor, I bet you will see a noticable increase of mining with performance ram. No, you won't see an increase if the memory you need is smaller than cache size because the memory won't be read because the cache knows whats in it. |
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Cgminer is free but you have the option to donate a percentage to the makers.
Does anyone know how much is donated via this way? It's hard to compare $1300 per month with unknown numbers.
Personally, if I would ever make a faster bitstream for fpga's than available, or faster software for cpu/gpu, I would do it the way cgminer does.
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Banking as in the western world is forbidden in some muslim countries. I think that is interesting.
That's why halal mortgages are invented. The bank buys the house and after a short period you buy the house from the bank for a lot more money and make monthly payments. So in fact you just pay interest but call it different. I will never understand religion. |
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I think it is wise not to jump too quickly into ASIC. There is a lot on the horizon that could effect the market for it.
Also ASIC are notoriously expensive and a big investment, for both the end-user and manufacter, can't blame them for not wanting to jump into it without seeing the success of their first product. Which is quickly looking like one of the best FPGA boards on the market at the moment.
Btw Yohan, I'm tempted to jump into learning a HDL to create a bitsteam, or improve one, any recommendation on where to start?
Most of my programming experience is in C, C++, C#, PHP, etc. Is the Spartan-6 partial to a specific HDL?
I like the look of Verilog, seems a bit better imho than VHDL (Both popular choices apparently).
Also with it's appearance being "C-like" I think I'll pick it up quickly.
I've done part of this http://hackaday.com/2011/12/30/so-you-wanna-learn-fpgas/Must make more time free to do more, but at the moment diablo 3 is so much fun |
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Probably only BFL knows.
They made the design and compiled it to a bitfile, so they know the timing constraints.
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