johnyj
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Merit: 1012
Beyond Imagination
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June 22, 2013, 08:55:39 PM |
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I want to pre-order USB powered Quavalon mining rig that do 1PH/s
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Vanderi
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June 23, 2013, 10:10:48 AM |
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and, EVERYBODY PANIC
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becoin
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Activity: 3431
Merit: 1233
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June 23, 2013, 10:22:23 AM |
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it is both doomed and not doomed at the same time. Yes, this is the correct answer. 512-qubit Quantum Computer acquired, is bitcoin doomed? Qubit Quantum Computer = Qubitcoin.
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jackjack
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May Bitcoin be touched by his Noodly Appendage
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June 23, 2013, 11:54:12 AM |
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it is both doomed and not doomed at the same time. Yes, this is the correct answer. No, it is not. It is doomed, it is not doomed and it is both doomed and not doomed. In quantum world, there are three states. Wrong, there are infinite states, that's what make it that useful
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Own address: 19QkqAza7BHFTuoz9N8UQkryP4E9jHo4N3 - Pywallet support: 1AQDfx22pKGgXnUZFL1e4UKos3QqvRzNh5 - Bitcointalk++ script support: 1Pxeccscj1ygseTdSV1qUqQCanp2B2NMM2 Pywallet: instructions. Encrypted wallet support, export/import keys/addresses, backup wallets, export/import CSV data from/into wallet, merge wallets, delete/import addresses and transactions, recover altcoins sent to bitcoin addresses, sign/verify messages and files with Bitcoin addresses, recover deleted wallets, etc.
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Come-from-Beyond
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Newbie
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June 23, 2013, 12:28:59 PM |
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it is both doomed and not doomed at the same time. Yes, this is the correct answer. No, it is not. It is doomed, it is not doomed and it is both doomed and not doomed. In quantum world, there are three states. Wrong, there are infinite states, that's what make it that useful Wrong, number of states is a very big but finite number.
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jackjack
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Merit: 1260
May Bitcoin be touched by his Noodly Appendage
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June 23, 2013, 01:03:56 PM |
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it is both doomed and not doomed at the same time. Yes, this is the correct answer. No, it is not. It is doomed, it is not doomed and it is both doomed and not doomed. In quantum world, there are three states. Wrong, there are infinite states, that's what make it that useful Wrong, number of states is a very big but finite number. Wrong
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Own address: 19QkqAza7BHFTuoz9N8UQkryP4E9jHo4N3 - Pywallet support: 1AQDfx22pKGgXnUZFL1e4UKos3QqvRzNh5 - Bitcointalk++ script support: 1Pxeccscj1ygseTdSV1qUqQCanp2B2NMM2 Pywallet: instructions. Encrypted wallet support, export/import keys/addresses, backup wallets, export/import CSV data from/into wallet, merge wallets, delete/import addresses and transactions, recover altcoins sent to bitcoin addresses, sign/verify messages and files with Bitcoin addresses, recover deleted wallets, etc.
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Come-from-Beyond
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June 23, 2013, 01:11:13 PM |
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it is both doomed and not doomed at the same time. Yes, this is the correct answer. No, it is not. It is doomed, it is not doomed and it is both doomed and not doomed. In quantum world, there are three states. Wrong, there are infinite states, that's what make it that useful Wrong, number of states is a very big but finite number. Wrong Wrong
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jackjack
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May Bitcoin be touched by his Noodly Appendage
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June 23, 2013, 01:12:19 PM |
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it is both doomed and not doomed at the same time. Yes, this is the correct answer. No, it is not. It is doomed, it is not doomed and it is both doomed and not doomed. In quantum world, there are three states. Wrong, there are infinite states, that's what make it that useful Wrong, number of states is a very big but finite number. Wrong Wrong Wrong
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Own address: 19QkqAza7BHFTuoz9N8UQkryP4E9jHo4N3 - Pywallet support: 1AQDfx22pKGgXnUZFL1e4UKos3QqvRzNh5 - Bitcointalk++ script support: 1Pxeccscj1ygseTdSV1qUqQCanp2B2NMM2 Pywallet: instructions. Encrypted wallet support, export/import keys/addresses, backup wallets, export/import CSV data from/into wallet, merge wallets, delete/import addresses and transactions, recover altcoins sent to bitcoin addresses, sign/verify messages and files with Bitcoin addresses, recover deleted wallets, etc.
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Come-from-Beyond
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Newbie
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June 23, 2013, 01:18:59 PM |
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Touché
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Jason
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June 23, 2013, 02:10:56 PM |
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Scott Aaronson has commented numerous times on the so-called quantum computer produced by D-Wave. Here is an excerpt from his blog (full article available at http://www.scottaaronson.com/blog/?p=954): "The second question is one that I’ve encountered many times on the blogosphere: who cares how D-Wave’s system works, and whether it does or doesn’t exploit quantum coherence, as long as it solves practical problems faster? Sure, maybe what D-Wave is building is really a series of interesting, useful, but still basically “classical” annealing devices. Maybe the word “quantum” is functioning here as the stone in a stone soup: attracting money, interest, and talented people to build something that, while neat, ultimately doesn’t much depend on quantum mechanics at all. As long as D-Wave’s (literal!) black box solves the problem instances in such-and-such amount of time, why does it matter what’s inside?" "To see the obtuseness of this question, consider a simple thought experiment: suppose D-Wave were marketing a classical, special-purpose, $10-million computer designed to perform simulated annealing, for 90-bit Ising spin glass problems with a certain fixed topology, somewhat better than an off-the-shelf computing cluster. Would there be even 5% of the public interest that there is now? I think D-Wave itself would be the first to admit the answer is no." A brief summary is that the D-Wave "quantum computer" referenced by the OP may not even be a quantum computer and will certainly not be a threat to Bitcoin without further major scientific breakthroughs. Here is Scott's Bio from his latest book, "Quantum Computing since Democritus," which is highly recommended for those interested in the subject: Scott Aaronson is an Associate Professor of Electrical Engineering and Computer Science at the Massachusetts Institute of Technology. Considered one of the top quantum complexity theorists in the world, he is well known both for his research in quantum computing and computational complexity theory, and for his widely read blog Shtetl-Optimized. Professor Aaronson also created Complexity Zoo, an online encyclopedia of computational complexity theory, and has written popular articles for Scientific American and The New York Times. His research and popular writing have earned him numerous awards, including the United States Presidential Early Career Award for Scientists and Engineers and the Alan T. Waterman Award.
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BM-2D7sazxZugpTgqm3M2MCi5C1t8Du8BN11f
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leopard2
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June 23, 2013, 10:04:14 PM |
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I want to pre-order USB powered Quavalon mining rig that do 1PH/s Is Butterfly Labs taking preorders for those yet? Absolutely, delivery is scheduled for October.
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Truth is the new hatespeech.
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coinage
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June 23, 2013, 11:26:57 PM Last edit: June 24, 2013, 12:18:44 AM by coinage |
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Well, the article doesn't quite say that (and in fact it's thought this type of device, more evolved, may be able to yield results vastly faster than any conventional computer, on large optimization problems). But it does amusingly present a superposition of answers, both implying -- and not implying! -- that this particular device may be faster than conventional computers at what it does: D-Wave hired an outside expert in algorithm-racing, who concluded that the speed of the D-Wave Two was above average overall, and that it was 3,600 times faster than a leading conventional computer when working on the specific type of problem that the quantum computer was built to solve.
Whether D-Wave will make for faster-running or better artificial-intelligence systems is yet to be seen. Lidar says that he has seen faster solvers. “Every problem we have tested can still be solved faster on classical computers,” he says.
What would matter to us is whether these annealing devices can be used for universal quantum computing. Surprisingly, there are claims that this should be possible, though the number of qubits required would be greater than with a gate-based system, and there might be sacrifices in speed as well. Regardless, there are enough reasonable paths to true quantum computing that in a few years it seems we will want to upgrade at least the signing protocol, or stop the convenient practice of reusing bitcoin addresses after the first spend. The latter option would bring an end to static vanity, donation, and green addresses (though the last two could be replaced with other, dynamic mechanisms if needed).
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DeathAndTaxes
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Gerald Davis
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June 24, 2013, 05:22:34 AM Last edit: June 24, 2013, 07:02:55 AM by DeathAndTaxes |
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The threat of Quantum computers isn't breaking SHA256 (or any hashing algorithm) it is in theory performing a faster than brute force attack on public key cryptography such as ECDSA used by Bitcoin but the system in the OP isn't a threat to Bitcoin for a variety of reasons.
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ktttn
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Activity: 126
Merit: 100
Capitalism is the crisis.
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June 24, 2013, 05:31:44 AM |
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No.
By the time QC gets used for cryptocracking or mining, Bitcoin will be using entanglement cryptography.
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Wit all my solidarities, -ktttn Ever see a gutterpunk spanging for cryptocoins? LfkJXVy8DanHm6aKegnmzvY8ZJuw8Dp4Qc
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jubalix
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June 24, 2013, 07:01:20 AM |
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here is a defacto sticky on QC's
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kwukduck
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Activity: 1937
Merit: 1001
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June 24, 2013, 07:14:23 AM |
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Quickly sell all your bitcoins! Oh wait nevermind you guys are already working on that. Tnx for cheap coins.
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14b8PdeWLqK3yi3PrNHMmCvSmvDEKEBh3E
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Lauda
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Terminated.
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June 24, 2013, 07:39:40 AM |
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No it's not.
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"The Times 03/Jan/2009 Chancellor on brink of second bailout for banks" 😼 Bitcoin Core ( onion)
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bluemeanie1
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June 24, 2013, 08:07:29 AM |
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this is a good video, thanks for posting.
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