How to calculate the 20 times contract yield of bitcoin
Publish: 2021-03-29 05:08:57
1. In order to understand the technical principle of bitcoin, we need to understand two important cryptographic techniques: hash code: it converts a long string into a fixed length string, and its conversion is irreversible, that is, it is impossible to guess the original string from hash code. Sha256 is mainly used in bitcoin protocol
public key system: corresponds to a public key and a private key, keeps the private key in the application and publishes the public key. When Party A transmits information to Party B, it can use Party A's private key to encrypt the information, and Party B can use Party A's public key to decrypt the information, so as to ensure that the third party cannot impersonate Party A to send the information; At the same time, when Party A transmits information to Party B, it is encrypted with Party B's public key and sent to Party B, and then Party B decrypts it with his own private key, so as to ensure that the third party cannot eavesdrop on the communication between the two people. RSA is the most common public key system, but the lliptic curve digital signature algorithm is used in bitcoin protocol. What's the difference between cash and bank account? Bitcoin is an electronic currency in BTC. In this article, it is also used to refer to the whole bitcoin system. Like opening an account in a bank, the corresponding concept in bitcoin is address. Everyone can have one or more bitcoin addresses, which are used to pay and collect money. Each address is a string that starts with 1. For example, I have two bitcoin accounts, and. A bitcoin account is uniquely determined by a pair of public key and private key. To save the account, you only need to save the private key file. Unlike bank accounts, banks keep all transaction records and maintain the book balance of each account, while bitcoin's transaction records are jointly maintained by the whole P2P network through a pre agreed protocol. How much money is in my account address? Although the current account balance can be seen by bitcoin software, unlike banks, there is no place to maintain the book balance of each address. It can only calculate the account balance in real time through all historical transactions. How do I pay? When I pay from address a to address B of the other party, the payment amount is e. at this time, both parties will announce the transaction information to each network node, telling address a to pay to address B, and the payment amount is e. In order to prevent the third party from forging the transaction information, the transaction information will be encrypted with the private key of address A. at this time, the network node receiving the transaction information can use the public key of address a to verify that the transaction information is indeed sent by address a. Of course, trading software will help us do these things, we just need to input the relevant parameters in the software. What will the network node do after receiving the transaction information? This is the most important part of the bitcoin system, which needs to be elaborated. For the sake of simplicity, only bitcoin protocol has been implemented. In the current version, each network node will save all transaction information synchronously. There are two kinds of transaction information in history, one is & quot; Verified & quot; The transaction information, that is, the verified transaction information, is stored in a series of "blocks". Each & quot; block" Is the previous & quot; bock" The ID of each block is the hash code of the hash code of the block and the new transaction information (see an actual block). The other category refers to those who also & quot; Unverified & quot; The transaction information just paid above belongs to this category. When a network node receives new unverified transaction information (possibly more than one), it can calculate the book balance of each address at that time because the node keeps all the transaction information in history, so it can calculate whether the transaction information is valid, that is, whether there is enough balance in the payment account. After eliminating the invalid transaction information, it first takes out the last & quot; block" Then, the unverified transaction information is combined with the ID, and a verification code is added to form a new "block". It needs a lot of calculation to build a new block, because it needs to calculate the verification code, so that the above combination becomes a block, that is, the first several bits of the hash code of the block are 1. At present, the first 13 bits need to be 1 (generally, the specific method is uncertain), which means that if the block is generated by enumeration method, the average number of enumerations is 16 ^ 13. Using CPU resources to generate a block is called "gold mining", because the proction of the block will get a certain reward, and the reward information has been included in the block. When a network node generates a new block, it will broadcast to other network nodes. However, this network block may not be accepted by the network, because it is possible that other network nodes have proced the block earlier. Only the earliest block or the block with the largest number of subsequent blocks is valid, and the remaining blocks are no longer used as the initial blocks of the next block. How does the other party confirm that the payment is successful? When the payment information is distributed to the network node, the network node begins to calculate whether the transaction is valid (that is, whether the account balance is enough to pay), and attempts to generate blocks containing the transaction information. When six blocks (one direct block and five subsequent blocks) contain the transaction information, the transaction information is considered "verified", so that the transaction is formally confirmed, and the other party can confirm the successful payment. A possible problem is that I will pay the balance of address a to address B, and at the same time pay to address C. If I only verify that the single comparison transaction is valid. At this point, my way of cheating is to generate six blocks including B to B and six blocks including C to C before the truth is revealed. Because I need a very long CPU time to generate a block, compared with the whole network, the probability of my cheating success is very small. What is the motivation of network nodes to proce blocks? As can be seen from the above description, in order to make the transaction information effective, the network node needs to generate 1 and 5 subsequent blocks to contain the transaction information, and such block generation is very CPU intensive. How to let other network nodes help to proce blocks as soon as possible? The answer is very simple. The agreement stipulates that BTC will be rewarded for the address where the block is proced, as well as the Commission promised by both parties. At present, the reward for procing a block is 50btc, which will be halved every four years in the future. For example, the reward will be 25btc from 2013 to 2016. Is the transaction anonymous? Yes, and No. All bitcoin transactions are visible. We can check all transaction records of each account, such as mine. But what's different from the banking monetary system is that everyone's account itself is anonymous, and everyone can open many accounts. In general, anonymity is not as good as it claims. But bitcoin has another advantage in doing black market trading: it can't be frozen. Even if the police trace a bitcoin address, there is nothing they can do unless they trace the computer used by the exchange based on the Internet address. How to ensure that bitcoin does not depreciate? Generally speaking, in the case of equivalent trading activities, the value of money is inversely proportional to the amount of money issued. Unlike the traditional money market, the central bank can determine the amount of money issued. Bitcoin does not have a central issuing institution. Only by procing blocks can we get a certain amount of BTC currency. Therefore, bitcoin's new amount of money depends on: 1. The speed of procing blocks: bitcoin's agreement stipulates that the difficulty of procing blocks is fixed at an average of 2016 every two weeks, about 10 minutes. Moore's law of doubling CPU speed every 18 months will not speed up the proction of block. 2. The number of rewards for block proction: at present, 50 BTC is awarded for each block proced, which is halved every four years. In 2013, 25 BTC is awarded, and in 2017, 12.5 BTC is awarded. Considering the above two factors, bitcoin's currency issuing speed is not controlled by any single node in the network. Its protocol makes the currency stock known in advance, and the maximum stock is only 21 million BTC
public key system: corresponds to a public key and a private key, keeps the private key in the application and publishes the public key. When Party A transmits information to Party B, it can use Party A's private key to encrypt the information, and Party B can use Party A's public key to decrypt the information, so as to ensure that the third party cannot impersonate Party A to send the information; At the same time, when Party A transmits information to Party B, it is encrypted with Party B's public key and sent to Party B, and then Party B decrypts it with his own private key, so as to ensure that the third party cannot eavesdrop on the communication between the two people. RSA is the most common public key system, but the lliptic curve digital signature algorithm is used in bitcoin protocol. What's the difference between cash and bank account? Bitcoin is an electronic currency in BTC. In this article, it is also used to refer to the whole bitcoin system. Like opening an account in a bank, the corresponding concept in bitcoin is address. Everyone can have one or more bitcoin addresses, which are used to pay and collect money. Each address is a string that starts with 1. For example, I have two bitcoin accounts, and. A bitcoin account is uniquely determined by a pair of public key and private key. To save the account, you only need to save the private key file. Unlike bank accounts, banks keep all transaction records and maintain the book balance of each account, while bitcoin's transaction records are jointly maintained by the whole P2P network through a pre agreed protocol. How much money is in my account address? Although the current account balance can be seen by bitcoin software, unlike banks, there is no place to maintain the book balance of each address. It can only calculate the account balance in real time through all historical transactions. How do I pay? When I pay from address a to address B of the other party, the payment amount is e. at this time, both parties will announce the transaction information to each network node, telling address a to pay to address B, and the payment amount is e. In order to prevent the third party from forging the transaction information, the transaction information will be encrypted with the private key of address A. at this time, the network node receiving the transaction information can use the public key of address a to verify that the transaction information is indeed sent by address a. Of course, trading software will help us do these things, we just need to input the relevant parameters in the software. What will the network node do after receiving the transaction information? This is the most important part of the bitcoin system, which needs to be elaborated. For the sake of simplicity, only bitcoin protocol has been implemented. In the current version, each network node will save all transaction information synchronously. There are two kinds of transaction information in history, one is & quot; Verified & quot; The transaction information, that is, the verified transaction information, is stored in a series of "blocks". Each & quot; block" Is the previous & quot; bock" The ID of each block is the hash code of the hash code of the block and the new transaction information (see an actual block). The other category refers to those who also & quot; Unverified & quot; The transaction information just paid above belongs to this category. When a network node receives new unverified transaction information (possibly more than one), it can calculate the book balance of each address at that time because the node keeps all the transaction information in history, so it can calculate whether the transaction information is valid, that is, whether there is enough balance in the payment account. After eliminating the invalid transaction information, it first takes out the last & quot; block" Then, the unverified transaction information is combined with the ID, and a verification code is added to form a new "block". It needs a lot of calculation to build a new block, because it needs to calculate the verification code, so that the above combination becomes a block, that is, the first several bits of the hash code of the block are 1. At present, the first 13 bits need to be 1 (generally, the specific method is uncertain), which means that if the block is generated by enumeration method, the average number of enumerations is 16 ^ 13. Using CPU resources to generate a block is called "gold mining", because the proction of the block will get a certain reward, and the reward information has been included in the block. When a network node generates a new block, it will broadcast to other network nodes. However, this network block may not be accepted by the network, because it is possible that other network nodes have proced the block earlier. Only the earliest block or the block with the largest number of subsequent blocks is valid, and the remaining blocks are no longer used as the initial blocks of the next block. How does the other party confirm that the payment is successful? When the payment information is distributed to the network node, the network node begins to calculate whether the transaction is valid (that is, whether the account balance is enough to pay), and attempts to generate blocks containing the transaction information. When six blocks (one direct block and five subsequent blocks) contain the transaction information, the transaction information is considered "verified", so that the transaction is formally confirmed, and the other party can confirm the successful payment. A possible problem is that I will pay the balance of address a to address B, and at the same time pay to address C. If I only verify that the single comparison transaction is valid. At this point, my way of cheating is to generate six blocks including B to B and six blocks including C to C before the truth is revealed. Because I need a very long CPU time to generate a block, compared with the whole network, the probability of my cheating success is very small. What is the motivation of network nodes to proce blocks? As can be seen from the above description, in order to make the transaction information effective, the network node needs to generate 1 and 5 subsequent blocks to contain the transaction information, and such block generation is very CPU intensive. How to let other network nodes help to proce blocks as soon as possible? The answer is very simple. The agreement stipulates that BTC will be rewarded for the address where the block is proced, as well as the Commission promised by both parties. At present, the reward for procing a block is 50btc, which will be halved every four years in the future. For example, the reward will be 25btc from 2013 to 2016. Is the transaction anonymous? Yes, and No. All bitcoin transactions are visible. We can check all transaction records of each account, such as mine. But what's different from the banking monetary system is that everyone's account itself is anonymous, and everyone can open many accounts. In general, anonymity is not as good as it claims. But bitcoin has another advantage in doing black market trading: it can't be frozen. Even if the police trace a bitcoin address, there is nothing they can do unless they trace the computer used by the exchange based on the Internet address. How to ensure that bitcoin does not depreciate? Generally speaking, in the case of equivalent trading activities, the value of money is inversely proportional to the amount of money issued. Unlike the traditional money market, the central bank can determine the amount of money issued. Bitcoin does not have a central issuing institution. Only by procing blocks can we get a certain amount of BTC currency. Therefore, bitcoin's new amount of money depends on: 1. The speed of procing blocks: bitcoin's agreement stipulates that the difficulty of procing blocks is fixed at an average of 2016 every two weeks, about 10 minutes. Moore's law of doubling CPU speed every 18 months will not speed up the proction of block. 2. The number of rewards for block proction: at present, 50 BTC is awarded for each block proced, which is halved every four years. In 2013, 25 BTC is awarded, and in 2017, 12.5 BTC is awarded. Considering the above two factors, bitcoin's currency issuing speed is not controlled by any single node in the network. Its protocol makes the currency stock known in advance, and the maximum stock is only 21 million BTC
2. I'm a market analyst. I tell you that there is no such saying. The loss is usually full position trading, and you can buy as much as you have. Normal people don't do this. For example, if you invest 100 yuan in futures and you buy 100 yuan in full, then the loss is absolute. But if you buy 10 yuan, you will lose 20 yuan, I don't want to increase by 100 yuan. As long as your list doesn't go out and wait for it to fall back, you won't lose! What's more, you can earn as much as you buy... It's not a stock. You can only earn if the stock goes up,
3. Hello, my friend, I have played bitcoin, but now the price of bitcoin is too high. If 2600 is to be doubled, it will take a long time to hold it. It is suggested that we consider Khan coin, which has the same monetary attribute as bitcoin, is a real digital encryption asset and circulates all over the world
4.
On April 22 this year, the people's Bank of China issued an announcement< the fifth set of 50 yuan, 20 yuan, 10 yuan, 1 yuan banknotes and 1 yuan, 50 Jiao and 10 Jiao coins will be released from August 30, 2019 . Just yesterday " the new version of RMB self-contained beauty filter was hot searched"
5. What happened? If the star coin is 6900, the exchange coupon is the same, but you can charge vip2 to 30 design coupons, only 50, which is less expensive than doing it directly, and also charge VIP
6. Great wisdom is a real-time market display and trading system software
there are many functions, not only transaction information, but also other policies and company information that can be linked
you will know when you use it.
some shortcut keys are also very useful, such as those defined in the K-line state:
F1 is the transaction record of each order in time-sharing; F3 Shanghai index time-sharing chart, F4 Shenzhen index time-sharing chart
F6 select the sector of the stock pool; F7 current affairs information; F8 various K-line change display
f9f12 is transaction entrustment; If you are new to the stock market, it is recommended that you invest a small amount of money first,
wait until you have accumulated experience to a certain extent, and then do it.
I hope you can make small gains and big gains...
ha ha
there are many functions, not only transaction information, but also other policies and company information that can be linked
you will know when you use it.
some shortcut keys are also very useful, such as those defined in the K-line state:
F1 is the transaction record of each order in time-sharing; F3 Shanghai index time-sharing chart, F4 Shenzhen index time-sharing chart
F6 select the sector of the stock pool; F7 current affairs information; F8 various K-line change display
f9f12 is transaction entrustment; If you are new to the stock market, it is recommended that you invest a small amount of money first,
wait until you have accumulated experience to a certain extent, and then do it.
I hope you can make small gains and big gains...
ha ha
7. There are always people who say that exo is a big company, so it has good resources. Are you funny? They are selected by strength in a big company. You think your father is too strong. Why didn't they go to our big company? I wish exo would be separated from exo and become an indivial as soon as possible, so as to avoid being suppressed all day and not giving resources, Do you compare with us by your fire level in the past two years? Are you ashamed? I know your family is hot now. I always say that we lived in those years. What's the matter? Our achievements in those years were better than you. What's more popular now? We've been on the road for eight years, and we've been on fire for six years. We've been under a lot of pressure. We don't know who took our prize and where you were in the hundred regiments war, If you go to Europe and America, what are you talking about? You always satirize us. I tell you, we'll count ourselves as being world-class. One day, everything we've experienced will happen to you, Try it. All the fans of the group are laughing at you. Every time there is a black curtain, there is always your family. You are world-class. Our group is popular even if it doesn't mainly focus on Europe and America. Why don't you come out every time it comes to national affairs? Because now your family is mainly engaged in the European and American circle, passers-by have never heard of anything else, and those they don't know are called bulletproof. Don't you think it's funny? Finally, knowing that your family is hot now, our regiment has no energy to compare with you. It's already tired to deal with so many predecessors. As for you, you'd better think about how to compare with the younger generation. Don't stare at our family every day
8. All right
9.
Business performance
sales. In G-List, the total sales volume of Korean specialty has exceeded 15 million, including one million level album, three two million level albums and one three million level album, of which map of the soul: persona currently has 3.52 million, the highest sales volume in Korean history. In 2019, up to now (August 09, 2019), more than 5 million albums have been sold, including more than 1.1 million old albums. Japanese single sales have exceeded one million. At the beginning, overseas artists, including Japanese local artists, exceeded one million the next day for 11 years. Korean troupe is the best-selling kpop artist in Europe and America. IFPI released the "2018 global record list" and won the second and third place in bulletproof packaging
sound source. AK / PK audio source, the highest listening on the first day, 950000 + in the case of watermelon collapse three times, the top ten in the annual list, MMA annual song, MMA annual special, MMA annual art, golden record audio source, and full special list. The longest record of Mellon real-time is bulletproof. In a few days, the longest song on watermelon weekly list is bulletproof spring day, The top four stream media in G list are 100 million level, and the only song of Aidou group is 200 million level
tubing. If you don't want to say more, just mention that the first day was more than 60 million, less than two days, the number of hits in Europe and the United States was the highest in South Korea
each list and award ceremony. Billboard has three titles in a year, ranking eighth in the top 100, bbma's best combination and best social artist, AMA's best social artist and performance, and Grammy awarding guests. British and American Gao four crown album
tour. At the beginning, the rose bowl, Wembley and Chicago military stadium were all sold out. So far, ly and its follow-up sy tour have mobilized nearly 2 million people in less than a year
humanistic achievements
only two representative achievements
cultural medals. This is a commendation on behalf of bulletproof's status in South Korea. The medal is awarded to people with meritorious service, in recognition of bulletproof's promotion of South Korean culture. This commendation directly separates bulletproof from the lowest level of IDO in South Korean cultural circles, and is an affirmation of bulletproof national business card. As far as South Korea is concerned, bulletproof is a combination that can represent the cultural community and be as famous as outstanding representatives in other fields such as sports
Time magazine, including the cover of time magazine in 2018 and the top 100 influential people of time magazine in 2019. This is an affirmation of the international influence of bulletproof, which is praised as "next generation leaders" by time magazine and affirms its influence on the young generation. Cr.
it seems that South Korea's big reward is the easiest. Why don't exo start with South Korea's big reward first
10. BTS is a base station transceiver, directly facing the user, the mobile phone's wireless signal is directly to the BTS. Generally, you can see an iron tower with a small house under it. BTS is there
a BSC is a base station controller. One BSC controls n BTS. BSC is usually in the Central Bureau (County Bureau or city Bureau). The signal received by BTS from mobile phone should be sent to BSC for processing
SDH is a transmission device, most of which are optical transmission devices
for example, BTS and BSC are two stations. The signals to be transmitted are people or goods. Optical fiber and optical cable are the road, and SDH transmission equipment is the car
in order to complete the signal transmission from BTS to BSC, both ends must have SDH transmission equipment.
a BSC is a base station controller. One BSC controls n BTS. BSC is usually in the Central Bureau (County Bureau or city Bureau). The signal received by BTS from mobile phone should be sent to BSC for processing
SDH is a transmission device, most of which are optical transmission devices
for example, BTS and BSC are two stations. The signals to be transmitted are people or goods. Optical fiber and optical cable are the road, and SDH transmission equipment is the car
in order to complete the signal transmission from BTS to BSC, both ends must have SDH transmission equipment.
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