Quantum computer digs for bitcoin
Publish: 2021-04-04 09:09:56
1.
at present, the computing power of bitcoin in the whole network has reached 2.36 billion hash collisions per second, which is equivalent to the number of water droplets in more than 200000 50 meter long standard swimming pools. But even with such a large amount of computing power, it will take about 10 minutes to hit a hash value that meets the requirements
in 2012, bitcoin's output was halved for the first time, and in July 2016, bitcoin's output was halved for the second time. At present, 12.5 bitcoins are awarded for recording one page of account book. The next halving will take place around 2020, and the total number of bitcoins will not increase by 2040, with a total of 21 million. In other words, the difficulty of digging bitcoin is increasing, while the time required is increasing
2. I tell you, the computing power of home PC is too low. According to the difficulty of more than 900 million computing and programming, the computing power of a home PC is generally between 100 m and 600 m. if you dig, the money you earn in a month is not even one tenth of the electricity bill, so you need a mining machine. Now on the market, the machine specially optimized for the calculation algorithm of the generation of bitcoin is the miner. A miner can process 600ghash data operations per second. Without interruption, it can generate a bitcoin in about 10 days, which requires high computer configuration
it's not impossible that you can dig 100 in a day. To be exact, it doesn't take a day. It only takes less than a few seconds to win. The premise is that you can win "Tianhe No.2" which ranks first in the world.
it's not impossible that you can dig 100 in a day. To be exact, it doesn't take a day. It only takes less than a few seconds to win. The premise is that you can win "Tianhe No.2" which ranks first in the world.
3. Theoretically, it can be cracked, but it's just a time-consuming problem. If you think about the cost of mining, you should know the difficulty of cracking. To protect bitcoin by means of encryption must make the cracker pay a much higher price than mining, otherwise everyone can get it by cracking rather than mining
4. Now it's no need to dig. Bitcoin is shut down
you are not well informed.
you are not well informed.
5. < UL > in the current situation, quantum computers can't help with bitcoin mining. turning to quantum computers will not affect the mining speed, because with the soaring price, the difficulty of mining will increase. indeed, The introction of quantum algorithm will put the traditional cryptocurrency system at risk < / UL >
at present, we do not have such quantum algorithm, but what should we do if we find it in the future? As we all know, bitcoin aims to identify the speed of mining, and also increases the difficulty of mining. It means that the difficulty of finding the algorithm will become more complex
in fact, it is impossible to mine with ordinary computers, so miners use ASIC chips to dig bitcoin. At present, there are two kinds of cryptocurrency, RSA and elliptic curve cryptocurrency. In fact, these two cryptocurrency methods are vulnerable to quantum computer attacks. According to Anastasia, we only need 2500 cubits to interrupt algoant, interrupt EC, and about 4000 cubits to interrupt RSA
Hackers can identify bitcoin wallet addressesin the current situation, hard forking is impossible because many users have lost their wallet addresses and coins. Now, the worry is that quantum computers can easily help track lost wallets, and hackers can use them to decrypt and retrieve such lost coins
However, the main focus is the research of quantum computer. The entry of such computer system will make the cryptocurrency system face risks. The system could be the destroyer of bitcoin6. Abstract: in a small laboratory in a secluded village 50 miles north of New York City, intricate pipelines and electronic equipment are wound under the ceiling. This seemingly haphazard pile of devices is a computer. It is different from any computer in the world, but it is a milestone device in the history --- quantum computer
on May 3, 2017, a big news in science and technology circles: the world's first optical quantum computer surpassing the early classical computer was born. This "world's first" is a genuine "made in China" and is the result of a breakthrough made by Professor Pan Jianwei and his colleagues of the University of science and technology of China and Professor Wang Haohua of Zhejiang University
if the speed of traditional computer is bicycle, the speed of quantum computer is just like airplane. In the past few months, IBM and Intel have announced that they have built 50 and 49 qubit quantum computers, respectively. Some experts point out that within ten years, the computing power of quantum computer may catch up with and surpass the current supercomputer
at the American Physics Annual Meeting held in Los Angeles on March 5, 2018, Julian Kelly, a research scientist at Google quantum AI laboratory, reported that he was leading the Google team to test a 72 qubit universal quantum computer. However, this is only 72 qubits. At this rate of development, the magic power of quantum computer will soon be terrifying
then, why do we say that quantum computers can easily crack bitcoin? What's the matter
it takes 600000 years to crack an RSA cryptosystem, but it takes less than three hours to use a quantum computer with considerable storage function! In other words, with the leap from electronic computer to quantum computer, the computing power and the ability to process big data of the whole mankind will be improved for tens of thousands or even hundreds of millions of times. In front of the quantum computer, the traditional electronic computer we used to be proud of is equivalent to the previous abacus, which is bulky and old
although the bitcoin protocol uses asymmetric cryptocurrency, the corresponding public key is used to verify the transactions signed by the private key to ensure that bitcoin can only be used by legitimate owners. It is not feasible to force the private key to be consistent with the public key by using the currently available computer, but quantum computer can solve the problem of asymmetric cryptocurrency
in addition, the rule of bitcoin is that the more processed block will be added to the blockchain, and the other block will be voided. For example, it's like 51 people in an account book say that you have saved 100 yuan in the bank, while 49 people say that you have saved 50 yuan. In this case, the minority of blockchain algorithm is subordinate to the majority, and the bank thinks that you have saved 100 yuan is true, and that you have saved 50 yuan is false. So once a miner has 51% of the computing power, other subsequent miners will not be able to continue to get bitcoin
Andersen Cheng, co-founder of a network security company in the UK, says bitcoin will come to an end the day quantum computers come into use. What's your opinion?
on May 3, 2017, a big news in science and technology circles: the world's first optical quantum computer surpassing the early classical computer was born. This "world's first" is a genuine "made in China" and is the result of a breakthrough made by Professor Pan Jianwei and his colleagues of the University of science and technology of China and Professor Wang Haohua of Zhejiang University
if the speed of traditional computer is bicycle, the speed of quantum computer is just like airplane. In the past few months, IBM and Intel have announced that they have built 50 and 49 qubit quantum computers, respectively. Some experts point out that within ten years, the computing power of quantum computer may catch up with and surpass the current supercomputer
at the American Physics Annual Meeting held in Los Angeles on March 5, 2018, Julian Kelly, a research scientist at Google quantum AI laboratory, reported that he was leading the Google team to test a 72 qubit universal quantum computer. However, this is only 72 qubits. At this rate of development, the magic power of quantum computer will soon be terrifying
then, why do we say that quantum computers can easily crack bitcoin? What's the matter
it takes 600000 years to crack an RSA cryptosystem, but it takes less than three hours to use a quantum computer with considerable storage function! In other words, with the leap from electronic computer to quantum computer, the computing power and the ability to process big data of the whole mankind will be improved for tens of thousands or even hundreds of millions of times. In front of the quantum computer, the traditional electronic computer we used to be proud of is equivalent to the previous abacus, which is bulky and old
although the bitcoin protocol uses asymmetric cryptocurrency, the corresponding public key is used to verify the transactions signed by the private key to ensure that bitcoin can only be used by legitimate owners. It is not feasible to force the private key to be consistent with the public key by using the currently available computer, but quantum computer can solve the problem of asymmetric cryptocurrency
in addition, the rule of bitcoin is that the more processed block will be added to the blockchain, and the other block will be voided. For example, it's like 51 people in an account book say that you have saved 100 yuan in the bank, while 49 people say that you have saved 50 yuan. In this case, the minority of blockchain algorithm is subordinate to the majority, and the bank thinks that you have saved 100 yuan is true, and that you have saved 50 yuan is false. So once a miner has 51% of the computing power, other subsequent miners will not be able to continue to get bitcoin
Andersen Cheng, co-founder of a network security company in the UK, says bitcoin will come to an end the day quantum computers come into use. What's your opinion?
7. In fact, the threat of quantum computers to bitcoin is not mining, but trading attacks. We know that the transaction of bitcoin is completed by decentralized cryptography authentication, and the core of this authentication method is hash algorithm. If there is a quantum computer, it can create collisions (Grover algorithm, polynomial acceleration) to forge transactions for profit. Because the core algorithm of bitcoin has been fixed, if the algorithm is not changed, the key length cannot be increased, and this attack cannot be resisted. However, if there is a practical quantum computer, what can we do is better than this kind of attack...
please accept
please accept
8. Bitcoin is a kind of virtual currency. To put it bluntly, it is to use the computing performance of computer to do coolie for large servers, and the cost saved will be shared with you. However, bitcoin is not cost-effective, and personal computers are not suitable for mining. The reasons are as follows:
1. The calculation is mainly done by GPU, while the GPU of ordinary computers is not very powerful, which directly leads to low mining efficiency, and even the electricity bill can not be recovered
2. Because it is used to exchange data on the network, not only the performance of the computer should be good enough, but also the network bandwidth and quality should be higher. If you are asked to build a telecom 100 MB broadband before, I wonder if you are still so interested
3. GPU will generate a lot of heat ring calculation. If it is not handled properly or the original radiator is very dirty, it may burn the GPU or computer, and the gain will not be worth the loss
4. The other is the impact of the environment. Let's not say where bitcoin is going to go, let's say that the current exchange rate is seriously declining and there is no money to make before. Professional mines are even processing equipment. It's obviously unreasonable to go mining at this time
of course, if the computer is not yours, you don't have to pay for the electricity, and broadband doesn't need money, then you can try it....
1. The calculation is mainly done by GPU, while the GPU of ordinary computers is not very powerful, which directly leads to low mining efficiency, and even the electricity bill can not be recovered
2. Because it is used to exchange data on the network, not only the performance of the computer should be good enough, but also the network bandwidth and quality should be higher. If you are asked to build a telecom 100 MB broadband before, I wonder if you are still so interested
3. GPU will generate a lot of heat ring calculation. If it is not handled properly or the original radiator is very dirty, it may burn the GPU or computer, and the gain will not be worth the loss
4. The other is the impact of the environment. Let's not say where bitcoin is going to go, let's say that the current exchange rate is seriously declining and there is no money to make before. Professional mines are even processing equipment. It's obviously unreasonable to go mining at this time
of course, if the computer is not yours, you don't have to pay for the electricity, and broadband doesn't need money, then you can try it....
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