greekoflove
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July 22, 2019, 03:53:42 PM |
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Why it will be so? How do you know?
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qubitasic
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July 22, 2019, 04:06:10 PM |
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Quantum computers are computers which exploit quantum mechanics to do certain computations far more quickly than traditional computers. https://en.bitcoin.it/wiki/Quantum_computing_and_Bitcoingenerating the privatekey: yes hashing the next block: no They will try it, because it is possible. Their reward will be huge. No matter how slow they are at least they are having some progress Then, when the first "shalecoins" are being moved, the cryptocommunity will discuss different topics: quantum secure addresses. , if they succeed with this, They will. , correct me If I'm wrong they will have an opportunity to get the people's cryptocurrencies. right? No, the first group will try to get the 'shalecoins', they have no owners. How do they know this? Nobody can, but if you move your coins to another address, they will know that there is an owner. They could move coins from addresses with owner, but they will not. It would disturb the Bitcoin ecosystem and also the value of their coins. Postquantum, nobody will be able to prove that he/she/they was/were the owner/s in the old system, because everyone will be able to reproduce the privatekeys. We will have a quantum secure network. This will be the new beginning.
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Mahanton
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July 22, 2019, 04:11:27 PM |
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In 10 years from now a quantum computer will have sufficient computation power to give a 51% attack on the bitcoin network.
Please discuss.
Lol!! Quantum computing is still under development and we don't yet have a realistic timeline! What we all are doing is speculation. Intel has just created a superconducting chip for such computing and it is still being tested. If quantum computer becomes a reality, will probably cost few millions and the usage will be restricted for governmental and research related use. Hackers won't have access to it just to launch 51% attack of crypto networks! Chill and take out such ideas from your mind! People do really love to go ahead of time which ive been seeing these several topics and discussion about quantum computer.We might reach those era but it would really be still so soon to see this upgrade.It can possible affect crypto yet we know on how quantum computing does but pretty sure there would be such changes later on. Its impossible for cryptospace not to be quantum immune one.
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Artemis3
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July 22, 2019, 04:46:54 PM |
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In 10 years from now a quantum computer will have sufficient computation power to give a 51% attack on the bitcoin network.
Please discuss.
In 10 years Bitcoin+blockchain: 1.Won't exist. 2.Will improve to a level,in which quantum computers won't be a threat,they could even help. ![Grin](https://bitcointalk.org/Smileys/default/grin.gif) Let's hope that the second option will happen. This topic has been discussed 100 times before,so it's pointless to ask the same questions again and again. No, albeit Bitcoin can be improved to be even more resistant, it is of my knowledge that Bitcoin right now is safe, IF people stick to using Bitcoin addresses ONCE, and only ONCE. Once the proposed soft fork or whatever gets passed, then even this won't be as critical, but as it has always been since the beginning, if you want to be safe, use your Bitcoin address only once, then move on to the next one. This is unrelated to the 51% attack, that doesn't even need to break the encryption, or use quantum computing.
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HeRetiK
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July 22, 2019, 10:32:21 PM |
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Deriving the private key of old addresses that got reused and still have balance: eventually. Deriving the private key of old address with no outgoing transactions: no. The majority of "lost" coins fall in the latter category. Quantum computing can't bring back old coins just like it can't bring back your grandmother.
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prehisto
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July 23, 2019, 09:03:36 AM |
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In 10 years from now a quantum computer will have sufficient computation power to give a 51% attack on the bitcoin network.
Please discuss.
Are you from the future? Where do you got this estimate from , form fox news or some fake news page? Because this is just fake. Quantum computing is far from being a reality even in 20 year time. Yes,some separate advancements has been made but full computing device is something completely different.
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qubitasic
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July 23, 2019, 04:49:26 PM |
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Stewart Allen, COO of quantum computing startup IonQ: “I think in two or three years we’ll have businesses that are using quantum to solve real-world problems,” explained Allen; in the coming years, we can expect to see a trend of early adopters who want to have a “first-mover advantage”. https://techhq.com/2019/07/accessible-quantum-computing-is-just-around-the-corner/'Shalecoins' will be moved and are their (the first group) reward. That is the big Bitcoin challenge. Then we will have a quantum secure network. This will be the new beginning.
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Kemarit
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July 23, 2019, 05:51:33 PM |
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As others have mentioned this topic has been discussed and debated in this community many times already. To the OP, I would suggest to read this thread: I don't believe Quantum Computing will ever threaten Bitcoin. Lots of "qualified" experts there sharing their opinions and thoughts about the subject matter, I will also urge others to really read that whole thread to fully understand everything, just saying.
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Artemis3
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July 23, 2019, 07:13:36 PM |
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Well the fear is quantum computers can crack classic crypto, but there is a catch: There will be quantum crypto, so things go back to the same again. There is a transitional moment where a select few would have the massive early quantum computers (remember the old computers) but as with everything, technology gets mass produced and cheaper and will find its way to everyone's hand, and at that point quantum crypto will be common. In the meantime there ARE quantum resistant crypto algorithms, and one of those is proposed for soft-forking Bitcoin way before this ever becomes an issue. More than "replacing" i think quantum will become an add on, i think at some point there will be quantum co-processors available. There are things general computing can do better than quantum, and vice-versa. I imagine a century later the same cpu will have both things integrated. Right now a 7qubit computer is several stories tall so, no, not quite there yet ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) But there are reported experiments with around 50qubits, a general quantum computer is yet to be built (publicly). I can imagine the NSA will build and operate one secretly so they can spy everyone's encrypted communications for a while until the technology reaches the masses. So its back to a 60ies style era where the State (and others) can and will spy on you until computers got good and small enough for common people to use cryptography.
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gmreal1
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July 23, 2019, 07:23:17 PM |
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In 10 years from now a quantum computer will have sufficient computation power to give a 51% attack on the bitcoin network.
Please discuss.
The rate of our evolution will probably keep increasing with technological advancements like Quantum computers, cold fusion plants, Artificial Intelligence and Robotics. I am just sad that I'll probably won't have enough time to enjoy a future of humanity uniting and prospering, with space exploration becoming our main target. So there is not much point in discussing Bitcoin along with Quantum computers. I was about to type that I doubt it will be still relevant, but I'm afraid that after 10 years someone will reply to this post about how dumb I was ![Lips sealed](https://bitcointalk.org/Smileys/default/lipsrsealed.gif)
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diahsw
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July 24, 2019, 08:21:38 AM |
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In 10 years from now a quantum computer will have sufficient computation power to give a 51% attack on the bitcoin network.
Please discuss.
A quantum computer, a calculating machine that utilizes quantum physics in the calculation process. This machine is predicted to have capabilities that far exceed the computers we use today. Computers that we often use now provide so many benefits that our parents might not be able to imagine. We can use this "classic" computer for simple things like calculating the price of groceries, making school assignments, communicating through social media, and discussing our faces and voices through the artificial intelligence they have. The unimaginable benefits will be realized in the future by the realization of quantum computers. With quantum computers, it is hoped that super-complicated calculations will require very large numbers to be done. Pharmacologists can count every atom in a drug that can fight viruses quickly and accurately to produce drugs that are more effective against disease. You might not use a quantum computer to update the status of social media, because that means the function of a quantum computer will be redundant. But, pharmacologists, physicists, chemists, and computer scientists will be greatly helped by the existence of quantum computers. More innovations that will benefit humanity will be generated from their calculations using quantum computers.
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aplistir
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July 24, 2019, 09:13:32 AM |
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Deriving the private key of old addresses that got reused and still have balance: eventually. Deriving the private key of old address with no outgoing transactions: no. The majority of "lost" coins fall in the latter category. Quantum computing can't bring back old coins just like it can't bring back your grandmother. You forgot Satoshi's 1000000 bitcoins that have newer been moved, but still have their public keys visible. Those addresses are difficult to protect from QC, because even if we implement a QC-resistant algorithm, those can't be protected or otherwise even Satoshi couldn't move them.
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My Address: 121f7zb2U4g9iM4MiJTDhEzqeZGHzq5wLh
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HeRetiK
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July 24, 2019, 09:36:04 AM |
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You forgot Satoshi's 1000000 bitcoins that have newer been moved, but still have their public keys visible.
Those addresses are difficult to protect from QC, because even if we implement a QC-resistant algorithm, those can't be protected or otherwise even Satoshi couldn't move them.
That's quite interesting, I didn't know that. I couldn't find anything useful on Google, got any more info on that? How are the public keys to Satoshi's old stash known, where public keys public before the protocol was changed to the way it works now?
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aplistir
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July 24, 2019, 10:09:15 AM |
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You forgot Satoshi's 1000000 bitcoins that have newer been moved, but still have their public keys visible.
Those addresses are difficult to protect from QC, because even if we implement a QC-resistant algorithm, those can't be protected or otherwise even Satoshi couldn't move them.
That's quite interesting, I didn't know that. I couldn't find anything useful on Google, got any more info on that? How are the public keys to Satoshi's old stash known, where public keys public before the protocol was changed to the way it works now? At the beginning bitcoin used pay to public key (P2PK) instead of the pay to public key hash (P2PKH) that we are using now. When using P2PK the public key is published in the blockchain when the "address" receives coins. Actually. without QC, the P2PK is even safer than P2PKH, because there is only ONE valid private key that can be used to spend coins from P2PK, while there are 2^96=79228162514264337593543950336 valid private keys to all P2PKH addresses. Because of the Ripemod160 hash. I do not know any wallet that would still support paying to P2PK "addresses", but there are some scripts in the net that can still be used for creating P2PK "addresses"
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My Address: 121f7zb2U4g9iM4MiJTDhEzqeZGHzq5wLh
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wack slacker
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July 25, 2019, 10:07:17 PM |
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If a quantum computer is to appear in 10 years, then certainly Bitcoin will also be upgraded to be able to counteract that effect. I wonder if quantum computers really threaten the existence of Bitcoin. It has never happened and I think quantum computers will help exploit many times faster, the Bitcoin network will be stronger.
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DarkDays
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July 25, 2019, 10:59:11 PM |
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Why would they want to attack the Bitcoin network with a quantum computer when they can mine blocks using it, but again I guess mining with a quantum computer would still not be enough, but with so much power on your CPU device I guess you can sure do a ton of gaming with it, Well in my opinion I will not gonna use it in gaining bitcoin and destroy the bitcoin ecosystem, That much worst depreciating the price of bitcoin now that it is in the bull run state, But for cryptocurrency sake I guess Quantum Powered Miner will be created in mining blocks for every cryptocurrency and Bitcoin can be possible.
Do you even understand what quantum computing is and why we don't already have it? Quantum computing components need very energy intensive environments to even exist. I can give you an entire class on Q-bits and sub zero containment but all that would seem like a moot thing to do who thinks quantum computers would be invented to play games and mine or attack Bitcoins... that is so trivial.
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Artemis3
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CLEAN non GPL infringing code made in Rust lang
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July 26, 2019, 01:24:56 AM |
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Deriving the private key of old addresses that got reused and still have balance: eventually. Deriving the private key of old address with no outgoing transactions: no. The majority of "lost" coins fall in the latter category. Quantum computing can't bring back old coins just like it can't bring back your grandmother. You forgot Satoshi's 1000000 bitcoins that have newer been moved, but still have their public keys visible. Those addresses are difficult to protect from QC, because even if we implement a QC-resistant algorithm, those can't be protected or otherwise even Satoshi couldn't move them. Actually once you soft fork to add the quantum resistant code, you might also add something to keep those coins locked forever. Something along the lines of: By the date the new code activates, coins not moved to a new wallet that supports it become locked. You can wait a year or four (next halving), etc. to give people plenty of time... Well we will see what core brings regarding this matter.
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simpleIPaddress
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July 26, 2019, 02:38:27 PM |
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Actually once you soft fork to add the quantum resistant code, you might also add something to keep those coins locked forever. Something along the lines of: By the date the new code activates, coins not moved to a new wallet that supports it become locked. You can wait a year or four (next halving), etc. to give people plenty of time... Well we will see what core brings regarding this matter.
If you keep those coins locked or something else what changes the original supply, you will create another sh**coin fork. The original chain will always remain the main chain with all the mined coins. Bitcoin is a challenge network. There will be a quantum update. But whoever moves the coins with no owner from the old to the new addresses will be the new owners. That is what original Bitcoin is. That makes the community improve the network. SHA-256 is not a quantum issue but to have an example: SHA-256 is very strong. It's not like the incremental step from MD5 to SHA1. It can last several decades unless there's some massive breakthrough attack.
If SHA-256 became completely broken, I think we could come to some agreement about what the honest block chain was before the trouble started, lock that in and continue from there with a new hash function.
If the hash breakdown came gradually, we could transition to a new hash in an orderly way. The software would be programmed to start using a new hash after a certain block number. Everyone would have to upgrade by that time. The software could save the new hash of all the old blocks to make sure a different block with the same old hash can't be used.
"Keep using the longest chain" or maybe "use this chain instead from now on"
I did a poll earlier a few months ago I think 19 out of 20 people said they would use whatever satoshi said.
Thereafter we would have two chains. The original chain and a forked one. To avoid such situations the Bitcoin community has to have an updated network all the time. That is the challenge. The quantum update will mark the new beginning of Bitcoin as the lost coins will be active again.
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Mr.ZODIAC
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July 26, 2019, 10:10:26 PM |
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It seems to me that lately humanity has already been at the peak of its mental abilities. Even if a good result in the field of quantum technologies is achieved and a quantum computer is created, then in the coming decades this technology will be practically absent for a wider start, because it is still a very expensive thing.
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