Rules of the contest:- The raffle will be decided by:
- We will combine the SHA256 hash of each email address with the hash of your ticket number and the first block hash to be found after the raffle ends. Here is an example:
- sha(sha(email) + sha(ticketNumber) + hashOfBlockFound)
- The lowest hash wins!
If you find the first sha256 collision ever, will you give both winners a single?  |
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Ik kan niets van bitcoins vinden op hun site.
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Ik heb laatst bitcoinmarket24.com gebruikt.
Het was de enige die ik kon vinden die ik ook echt kon gebruiken.
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Helaas zul je inderdaad met die kaart niet meer halen denk ik, het is wel degelijk een andere kaart dan de 6850 maar denk niet dat deze veel sneller zal zijn http://hexus.net/tech/reviews/graphics/36269-amd-radeon-hd-7850-vs-6850-vs-5850-clocks/ << hier kun je goed de verschillen zien tussen de verschillende modellen. ondanks de hogere nummers is de 5850 dus nog steeds de betere voor het mijnen van coins. voor games is de 7850 geen slechte kaart hoe lang duurt het voordat je je eerst bitcoin hebt met een 5850? 270 MHash/s Share size is 2^32 Gemiddelde tijd voor een share is dan 2^32 / 270M = 15,9 seconden. Bij BTC Guild (eerst die ik nu zo ff kan vinden) is een share 0,00003010305384390648 BTC 1 / 0,00003010305384390648 = 33219 shares nodig voor 1 BTC op huidige difficulty 33219 * 15,9 = 528182,1 seconden = 8803 minuten = 146 uur = 6,11 dagen. |
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Hallo Nederlandse vrienden. Zou iemand van jullie mij kunnen helpen met een bit miner optezeten voor mijn Saphire 7850OC. Het lukt mij maar telkens niet om een miner aan te krijgen.
mijn skype: stragyg
als je me msn wilt pm me dan
edit: wat een slecht openings zin iknow
Wat lukt er precies niet? |
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As far as I understand, loops that are not 100% unrolled incur inefficiencies, as partial results have to be fed back in and there has to be logic (multiplexers) to do that, whereas data in a fully unrolled design just percolates from start to finish.
Interesting. So if you can fit one fully unrolled instance in a device so you can get 1 hash/clock and fit another half unrolled instance that gets 1 hash/2 clocks, the second one holds back the speed of the first one. Would it be possible to clock the first at a speed a little faster than the second one? Or would this give difficulties to combine the 2 parts to have 1 output? |
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IIRC there is an Intel openCL driver that just uses the cpu.
It won't be fast like a GPU, but I guess it's just for devellopers to test stuff.
It would be enough for you I think.
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I'm near the top of the list to receive a bitforce single 3rd generation with the ability of clock higher than the 1st and 2nd generation due to heat dissipation.
I should receive them early next week (just as the auction ends)
If not, I will start deducting its potential earnings from the winners price until it ships.
Isn't it better to wait for when you actually have the item? Personally I won't bid for sure now, but would think about it if you already have the item. |
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What you can do, is forget the used outputs.
Only problem with that is you don't have the complete blocks anymore for new clients that want to download the blockchain.
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If the clients drop 99% of the blocks and only keep the headers but ask for a block if they need it, how can anybody send a fake block?
If you change only 1 bit of any transaction, the transactions would get a different merkle hash and so won't match the header.
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How long does it take for a block to be spendable?
Maybe you can filter out blocks that are already spent.
Pools must use it to pay out customers, the botnet might be just collecting atm.
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Your percentage is wrong, I think you probably mean part?  uh, yeah, sorry. thanks for the find. But, very nice graph. I would like to see it again in a few days to see if the 1tx blocks decrease with the takedown of that botnet. |
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is this interesting info? if so, I'll keep posting once in a while.  so, still mining  Your percentage is wrong, I think you probably mean part? |
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I'm working on a patch that solves block hashes analytically without requiring to brute-force SHA. Then, you simply set the blocktime variable to the desired value and off you go. I'm in the testing phase right now, set it to 1 block per hour, just to make sure I won't destabilize the bitcoin enterprise, but I still need to add tx to the equation; people seem to get uncomfortable with all these zero tx blocks right now. Well, once I fixed that I will offer the patch for just $9.95 to everybody! Mystery solved.  We need a like button for posts like this  |
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Speaking of, I wrote this really cool mining program that will double your hashrate - just don't upload it to VirusTotal. Anyone interested? I use the setting runningspeed=200% in my config file, works very good. I was pretty sure it was hashesdouble=1, but that might require the extra warp coprocessor. I submit hashes and also send my hashes thru the subspace communicator getting them tomorrow. exponential expanding them every 3 days. I'm currently working on a patch for the miner software that skips the nounces that are no share. The patch will work for all cpu/gpu/fpga/botnet miners. No settings or subspace things necessary that way |
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I agree with gigavps; chances are the application will just infect your computer.
Just try it in a virtual machine like virtual box. Would be nice to run wireshark and try to understand how it communicates. Speaking of, I wrote this really cool mining program that will double your hashrate - just don't upload it to VirusTotal. Anyone interested? I use the setting runningspeed=200% in my config file, works very good. |
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Blocks can have an older timestamp than its previous block. One example is this : http://blockchain.info/block-height/171759 Timestamp 2012-03-18 19:31:32 http://blockchain.info/block-height/171760 Timestamp 2012-03-18 19:31:30 How much older can timestamp be? If someone generates the last block of a difficulty with a timestamp of the first block of that difficulty plus 10 minutes the difficulty would get 2016 times as high. If he adds less it would become even harder. For this attack you don't need anything like 51%, just x% power of the network gives x% chance to do it, so in theory everybody can success with enough luck. |
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Does anyone know if the mystery miner has spent a single bitcoin he mined?
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