An example analysis of decentralized e-money
Publish: 2021-04-18 06:48:00
1. For example, I borrow money from you in a village. Normally, if I am afraid that you will not repay the money, I can find an intermediary recognized by everyone, such as the village head as the guarantor, and sign an IOU. In this way, if you default at that time, I can find an intermediary to prove that you really owe me money, But there are two problems: 1. What if the village head finds out that his long lost son colludes with him to cheat you on money? 2. What if the middleman dies on the spot the next day! This is about trust and security. If the method of blockchain is to provide you with the certificate of the whole village (distributed), so that everyone knows about it and the other party can't default on it. Second, even if a small number of people or village heads deny (some nodes commit crimes) that they have lost the IOU or tampered with the content, there will still be others to make the basis
above, explain the two problems of building owners: 1. Decentralization, because the account book records are not centralized in the hands of each participant, and you will get paid if you save and keep accounts. 2. Since I can get rewards by saving and keeping accounts, can I just keep accounts instead of storing them? If you have a mining pool, you can keep accounts for it and store it for you. In this way, you can still get good rewards. There are only a few mining pools in the world, so they are centralized
above, explain the two problems of building owners: 1. Decentralization, because the account book records are not centralized in the hands of each participant, and you will get paid if you save and keep accounts. 2. Since I can get rewards by saving and keeping accounts, can I just keep accounts instead of storing them? If you have a mining pool, you can keep accounts for it and store it for you. In this way, you can still get good rewards. There are only a few mining pools in the world, so they are centralized
2. That is, no one can control, not be controlled by the living center of a living group. Therefore, it can not be used as legal tender recognized by the state. There are a group of money speculators who argue that virtual currency will replace paper money every day. It's all bullshit. We must pay attention to investment risks. Now there are many pyramid schemes with virtual digital currency gimmicks to cheat money
3. The value of decentralization in jinwowo network analysis is as follows:
(1) fault tolerance: once there is a problem in the center, other nodes are easy to collapse. The centralized system is unlikely to be unexpected, because it depends on other nodes, and other nodes can not have problems together
(2) anti attack ability: decentralized system will make the cost of being attacked higher, because it lacks a sensitive central point, and the central point is more likely to be attacked by low cost. The reason is that we should all understand that the attack center may completely collapse, which is why more and more investors want the decentralized technology to become more mature
(3) anti Collusion: it is difficult for the participants in the decentralized system to sacrifice other participants and plot to make their own profits.
(1) fault tolerance: once there is a problem in the center, other nodes are easy to collapse. The centralized system is unlikely to be unexpected, because it depends on other nodes, and other nodes can not have problems together
(2) anti attack ability: decentralized system will make the cost of being attacked higher, because it lacks a sensitive central point, and the central point is more likely to be attacked by low cost. The reason is that we should all understand that the attack center may completely collapse, which is why more and more investors want the decentralized technology to become more mature
(3) anti Collusion: it is difficult for the participants in the decentralized system to sacrifice other participants and plot to make their own profits.
4. I don't think so!
5. E-money: the current e-money
traditional e-money: the e-money left by traditional ancestors in the past
traditional e-money: the e-money left by traditional ancestors in the past
6. I feel that
de averaging is for the covariance behind the aspect. After de averaging, the mean value of each dimension is zero, and the mean value in the covariance is zero, which is convenient to solve
specifically, suppose that matrix A is decentralized to get B, then the covariance of B is the transpose of B * B
de averaging is for the covariance behind the aspect. After de averaging, the mean value of each dimension is zero, and the mean value in the covariance is zero, which is convenient to solve
specifically, suppose that matrix A is decentralized to get B, then the covariance of B is the transpose of B * B
7. The so-called e-money, e-wallet and so on are commonly used bank cards, including wealth management card, debit card, credit card and so on. Foreign countries have been advocating that one day in the future, we should abolish physical money (to be honest, money is a waste of paper and easy to make fake), just use the identity credit system, that is, one day in the future, we should go out with an ID card, It's OK to buy things, work and make money. Of course, it can't be done now
e-money now refers to similar things. Credit cards and credit cards are actually e-money. When you swipe a card, do you pay? Paid, but there is no physical currency, in fact, is purely electronic trading process, so you may better understand some
Alipay paypal and so on, it is a payment platform, rather than electronic money.
remember which cards in your wallet are called e-money, e-cash
examples of ordering online with electronic money and electronic cash are: Alipay, eBay, block money, and Ctrip Travel Network, booking rooms online, etc. now, electronization is very popular. LZ should have the opportunity to use it.
e-money now refers to similar things. Credit cards and credit cards are actually e-money. When you swipe a card, do you pay? Paid, but there is no physical currency, in fact, is purely electronic trading process, so you may better understand some
Alipay paypal and so on, it is a payment platform, rather than electronic money.
remember which cards in your wallet are called e-money, e-cash
examples of ordering online with electronic money and electronic cash are: Alipay, eBay, block money, and Ctrip Travel Network, booking rooms online, etc. now, electronization is very popular. LZ should have the opportunity to use it.
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