How to update bitcoin account book
Publish: 2021-05-18 00:07:34
1. There are four common trading forms of bitcoin: spot, futures, options, ETF
1, spot trading
spot trading and stock trading are almost the same, buy low and sell high, earn the middle price difference! However, bitcoin is a T + 0 mode, trading anytime and anywhere, and there are no opening, closing, suspension and many other restrictions. It is open to trading 365 days a year
2. Futures trading is often referred to as contract trading. I believe most people can't resist the temptation of contracts. Contracts can be long and short, and can also be leveraged. The maximum support is 100 times, which indirectly magnifies the benefits and risks by 100 times, because human nature is inherently greedy. However, the difficulty coefficient of making money in the contract is high. Because bitcoin fluctuates greatly, it is possible to burst the position in an instant. Therefore, futures trading should be cautious
3. Option trading
the nature of option trading is the same as that of spot trading, i.e. expected call to buy up, expected put to buy down
since the nature of options and spot is the same, what is the difference between them? Simple comparison:
for example, bitoffer, the first bitcoin option in the world, has no margin, no handling charge and no exercise
(the only option in the world that doesn't need to exercise)
1. For spot, it costs US $7500 to buy a bitcoin
2. For option, it costs US $5 to buy a bitcoin option
when bitcoin rises from 7500 to US $8000, the spot earns us $500 and the option earns us $500
the benefits of the two are the same, but the cost difference is 1500 times
this is the case with options, which is the same as the spot calculation of profit space, except that you don't need to pay the full amount, just need to pay a little deposit Different from the traditional European options)
4. ETF fund trading
ETF is usually called trading open-end index fund, which is a very popular financial derivative in the traditional financial market. Bitoffer's launch of bitcoin ETF fund increases the fixed leverage on the original basis, because there are a certain number of futures contract positions behind the proct
What's the difference between bitcoin ETF and spot< In this year's bitcoin proction rection, in theory, X2
2. mining machinery needs to be upgraded, in theory, X2
3. The current price of bitcoin is 7500x4 = US $30000 (expected price after next year's proction rection)
ring this period, the return comparison between holding spot money and ETF fund is as follows:
1, Up to 15 times (compound interest calculation)
there is no doubt that bitcoin ETF is the best investment choice!
1, spot trading
spot trading and stock trading are almost the same, buy low and sell high, earn the middle price difference! However, bitcoin is a T + 0 mode, trading anytime and anywhere, and there are no opening, closing, suspension and many other restrictions. It is open to trading 365 days a year
2. Futures trading is often referred to as contract trading. I believe most people can't resist the temptation of contracts. Contracts can be long and short, and can also be leveraged. The maximum support is 100 times, which indirectly magnifies the benefits and risks by 100 times, because human nature is inherently greedy. However, the difficulty coefficient of making money in the contract is high. Because bitcoin fluctuates greatly, it is possible to burst the position in an instant. Therefore, futures trading should be cautious
3. Option trading
the nature of option trading is the same as that of spot trading, i.e. expected call to buy up, expected put to buy down
since the nature of options and spot is the same, what is the difference between them? Simple comparison:
for example, bitoffer, the first bitcoin option in the world, has no margin, no handling charge and no exercise
(the only option in the world that doesn't need to exercise)
1. For spot, it costs US $7500 to buy a bitcoin
2. For option, it costs US $5 to buy a bitcoin option
when bitcoin rises from 7500 to US $8000, the spot earns us $500 and the option earns us $500
the benefits of the two are the same, but the cost difference is 1500 times
this is the case with options, which is the same as the spot calculation of profit space, except that you don't need to pay the full amount, just need to pay a little deposit Different from the traditional European options)
4. ETF fund trading
ETF is usually called trading open-end index fund, which is a very popular financial derivative in the traditional financial market. Bitoffer's launch of bitcoin ETF fund increases the fixed leverage on the original basis, because there are a certain number of futures contract positions behind the proct
What's the difference between bitcoin ETF and spot< In this year's bitcoin proction rection, in theory, X2
2. mining machinery needs to be upgraded, in theory, X2
3. The current price of bitcoin is 7500x4 = US $30000 (expected price after next year's proction rection)
ring this period, the return comparison between holding spot money and ETF fund is as follows:
1, Up to 15 times (compound interest calculation)
there is no doubt that bitcoin ETF is the best investment choice!
2. The newly downloaded wallet update data has been very slow. Is there any way to speed up the synchronization of data. With a purse like coin pack, you don't need to download the transaction data of all blocks, only download the block header of each block. Each block head has only a few bytes, less than 1KB.
3. Only full node clients like bitcoin core need longer synchronization time. Technically, synchronization is a process of downloading and verifying all previous bitcoin transactions on the network. Some bitcoin clients need to know all previous transactions to calculate the available balance of your bitcoin wallet and complete new transactions. This step consumes a lot of resources and needs enough bandwidth and space to store the whole block chain. In order to maintain the security of bitcoin, enough users need to use the full node client, because they play the role of confirmation and relay transactions
there is an error, which may be e to network disconnection or incompatibility. Just update it. As a matter of fact, the online money and packet technology has developed quite mature now. It's better to put bitcoin in your own computer than in your online wallet. Of course, if you are a technology flow, you can go anywhere.
there is an error, which may be e to network disconnection or incompatibility. Just update it. As a matter of fact, the online money and packet technology has developed quite mature now. It's better to put bitcoin in your own computer than in your online wallet. Of course, if you are a technology flow, you can go anywhere.
4. As long as your wallet is not stolen and your data is recovered again, you will not lose the synchronization data
bitcoin
. Just reply to the data. If you suddenly shut down when you open your wallet and are synchronizing data, you can synchronize data again after power on, and the data will not be lost, because the network is synchronizing. Bitcoin era, from
Avalon
to start!
bitcoin
. Just reply to the data. If you suddenly shut down when you open your wallet and are synchronizing data, you can synchronize data again after power on, and the data will not be lost, because the network is synchronizing. Bitcoin era, from
Avalon
to start!
5. Hanging order is the number of orders waiting to be bought and sold behind the five trading prices transmitted from the exchange ring the market trading period. Together with five trading prices, these ten data constitute the most original public data in the whole trading system
6. Take bus NO.48 at Dongfeng overpass or Taixing South Road and get off at decaili. Go ahead to Balitai overpass and turn left. Inside Jingyan building is Balitai new culture square
or you can walk to Jintang Road, take bus no.643 at Hedong stadium and get off at Balitai (Weijin Road). Go ahead and cross the overpass to Jingyan building
or you can walk to Jintang Road, take bus no.643 at Hedong stadium and get off at Balitai (Weijin Road). Go ahead and cross the overpass to Jingyan building
7. This article will not deal with the details of algorithms and protocols. I plan to write another article on the principle of bitcoin from the perspective of programmers, where I will explain some key data structures, algorithms and protocols in the bitcoin system from the perspective of technicians
in this article, I will give a virtual village called "bitcoin village". The whole article will tell you the motivation of bitcoin, what problems it has solved, and the goals and design schemes of some key components step by step in the way of storytelling
question
let's start with the motivation of bitcoin< In this world, there is a small village called bitcun, which has hundreds of families. The village is almost isolated from the world and lives on its own. Because there is no large-scale trade, the villagers of Biti village have been living a barter life. That is to say, there is no unified currency among the villagers. The trade between the villagers is basically that Lao Zhang's family exchanges a bag of flour for Lao Li's family's sheep, and Wang's sister-in-law exchanges a basket of wild fruits for Aunt Liu's two feet of cloth. The villagers have been living a simple life<
physical currency
finally one day, the villagers felt it was too inconvenient to barter all the time, so the whole village held a meeting to discuss how to solve this problem. It is suggested that, as a general equivalent, the corresponding relationship between other items and gold should be compiled into a table, such as one gram of gold corresponds to a sheep, one gram of gold corresponds to a bag of flour and so on. At this time, Lao Zhang no longer has to carry a bag of flour and pant to Lao Li's house to exchange sheep. He just needs to get a gram of gold from his home, You can go to Lao Li's house and bring back a sheep. Lao Li can exchange this gram of gold for a bag of flour from anyone who is willing to sell flour. Of course, he can also exchange it for anything equivalent to a gram of gold
at this time, bitcun entered the era of physical currency
symbolic currency
the good times are not long. After a period of time, the disadvantages of physical currency also appear. Because there are not many gold mines near bit village, it takes too much time and effort to mine and smelt gold. With the use of gold, it will be worn, lost or deliberately hoarded. Once again, the whole village sat together and began to discuss countermeasures. At this time, someone said that in fact, we don't have to really use gold. Just find a piece of paper and write "one gram of gold". As long as the whole village agrees that this piece of paper is equal to one gram of gold, the problem will be solved. Others agree, but at the same time, there are new problems: the real gold needs to be mined and smelted, and the gold mine is limited, so mining and smelting also need costs, so no one can make a lot of gold out of thin air in a short time, but writing is different. As long as I have enough paper and pen, I can write as much as I like, then it becomes who has more paper, Maybe ten thousand pieces of paper can be exchanged for a sheep (in fact, there will be inflation in Economics)
I think so. However, at this time, someone proposed a solution: This paper is not effective for everyone. We only know the words written by the respected old village head in the village, and everyone knows the words of the old village head. The old village head wrote some paper and gave everyone the same amount of paper according to the gold stock of each family. For example, when Lao Zhang's family had two hundred grams of gold, the old village head gave Lao Zhang 200 pieces of paper with "one gram of gold" written on it, and took Lao Zhang's gold as collateral. In this way, the old village head collected all the gold in the village into his own home, and gave the equivalent amount of paper with words according to the amount of gold handed in by each family. At this time, the villagers can trade with the paper as gold, and everyone can recognize the words of the old village head, and others can't forge them. In addition, if someone's paper is worn too seriously, he can get it to the old village head to exchange for the new equivalent paper. In addition, the old village head promises that if anyone wants to exchange for gold, he will return the equivalent gold to that person as long as he takes the paper back. Because the amount of gold in the paper written by the old village head is the same as that in the real home, so as long as the principle of destroying as many paper as new paper is strictly followed, every effective paper can always be exchanged for the corresponding real gold
at this time, bitcun entered the era of symbolic currency (paper money). The old village head took on the role of the government and the bank<
virtual currency of the central system
a few years later, the old village head has to check a large number of old banknotes every day, write new banknotes, and record various accounts carefully. One comes and two goes. The old village head is overworked and unfortunately drives to the West
bitcun held another plenary meeting to discuss what to do. At this time, er Gouzi, the son of the old village head, volunteered to take over his father's pen and assume the responsibility of currency issuance. The young village head Er Gouzi was very clever. He did it for a few days and found that he didn't really need to write so much paper. It can be done like this: Villagers hand in all the banknotes and destroy them, but Er Gouzi will record the amount of banknotes handed in by each household. If you want to pay later, for example, if Lao Zhang wants to exchange a gram of gold for Lao Li for a sheep, you should call Er Gouzi together to explain that you want to put a gram of gold in Lao Zhang's name under Lao Li's name. Er Gouzi takes out the account book to see if Lao Zhang has a gram of gold in his name. If so, you can subtract one gram from Lao Zhang's name and add one gram to Lao Li's name. In this way, the payment is completed, At this time, Lao Li heard Er Gouzi confirm that the transfer was completed on the phone, so he could rest assured that Lao Zhang would lead the sheep away
at this time, bitcun entered the era of central system virtual currency. Every villager doesn't need to pay in kind. The payment process becomes the change of the number in the account book maintained by Er Gouzi<
distributed virtual currency
the new two dogs are smart, but sometimes they are smart but they are mistaken for smart. One day, er Gouzi was staring at the account book, thinking that how much money each household in the village has is what I say, then I'm not. So his mind a hot, privately from the old Zhang's account to draw ten grams of gold to his name
I thought it would be perfect, but I didn't expect that Lao Zhang also had the habit of keeping accounts. One day, when he was about to pay, er Gouzi told him that his account was out of money. Lao Zhang checked his account book. It was clear that there were still ten grams left, so he took the account book to find Er Gouzi. This check found the transfer without Lao Zhang's consent
east window incident! Bit village is boiling. The impeachment of Er Gouzi is inevitable, but through this incident, we found that the account book is concentrated in one person's hands:
this system completely depends on the personal credit of the account book holder. If this person does not obey the rules and tampers with the account book at will, then the whole monetary system will collapse
if this family is on fire or the account book is stolen, It will also bring a devastating blow to the whole system.
just when people are at a loss, an otaku scientist named Nakamoto came to the stage and told everyone that he has designed a virtual currency system called bitcoin, which does not rely on any central processor, to solve the above problems. Then he spoke slowly about his plan
let's take a look at how Tsung Nakamoto designed this system<
infrastructure construction
account book disclosure mechanism
Nakamoto first explained that the existing account book should be transformed as follows:
the account book will no longer record the balance of each villager, but only record each transaction. That is to record the payer, payee and payment amount of each transaction. As long as the initial state of the account book is determined, each transaction record is reliable and chronological, how much money each person currently holds can be calculated
the account book is changed from private to public, so that any villager can obtain the current complete account book as long as they need it. The account book records all the transaction records from the creation of the account book to the current
as soon as this remark is made, it will be fried immediately. The first one doesn't matter, but the second one is simply unacceptable, because the account book records all the villagers' transactions, so that everyone's privacy is not completely exposed
Nakamoto is in no hurry and takes out a pair of strange things
identity and signature mechanism (public key encryption system)
Mr. Nakamoto said, don't panic. Under his system, no one trades with his real identity, but with a unique code name
he showed the magic things in his hand and said that these two things were called secret seal and seal scanner respectively. Later, he will give each household in the village a secret seal and a seal scanner. The functions of the two are as follows:
the secret seal can be stamped with a seal on the paper. The seal of each seal implies a unique string of characters in the whole village, but it can't be seen by the naked eye. We can't make the corresponding seal through observation
the seal scanner can scan a sealed seal, read out the hidden information, and display a string of characters on the LCD screen
with these two magical things, you can trade without revealing your real identity, and the string of characters implied in the seal is the code of the family. How to use secret seal and seal scanner to trade will be described in detail below<
establish a virtual miner Organization (Mining Group)
next, Nakamoto Tsung recruits virtual miners for the whole village. The recruitment requirements are as follows:
miners are divided into groups, one group can be a single family, or several families can be combined into a group
becoming a miner does not affect the normal use of currency
miners spend a certain amount of time every day engaged in bitcoin "mining" activities, However, unlike gold mining, virtual miners can complete their work at home without taking tools to do field work.
miners have a certain possibility of getting paid. The more efforts they make in mining activities, the more likely they are to get paid.
miners can quit at any time, or new miners can join in at any time.
soon, About a fifth of the villagers join bitcoin miners and are divided into seven groups
set up the initial account book (Genesis block)
next, Nakamoto announced that according to the account book in ergouzi's hand, all the gold mortgaged will be returned to each villager according to the balance recorded in the account book, and then the account book will be completely destroyed
then, Nakamoto takes out a new account book and records some transaction records on the first page of the account book. In particular, the payer column of these records is "system", while the payee is the hidden character corresponding to each seal, representing the initial time. The system allocates a certain number of bitcoins to each household by default, but the number is very small, only a few, Even some unfortunate villagers didn't get bitcoin
then Mr. Nakamoto said that since there are very few bitcoins on the market, you can go back to the era of using gold as currency. Since I'm not the village head, I don't have the right to force you to recognize bitcoin. You can decide whether to accept bitcoin or not. However, with the flow of bitcoin and the activities of miners, bitcoin will graally increase
payment and transaction
in this article, I will give a virtual village called "bitcoin village". The whole article will tell you the motivation of bitcoin, what problems it has solved, and the goals and design schemes of some key components step by step in the way of storytelling
question
let's start with the motivation of bitcoin< In this world, there is a small village called bitcun, which has hundreds of families. The village is almost isolated from the world and lives on its own. Because there is no large-scale trade, the villagers of Biti village have been living a barter life. That is to say, there is no unified currency among the villagers. The trade between the villagers is basically that Lao Zhang's family exchanges a bag of flour for Lao Li's family's sheep, and Wang's sister-in-law exchanges a basket of wild fruits for Aunt Liu's two feet of cloth. The villagers have been living a simple life<
physical currency
finally one day, the villagers felt it was too inconvenient to barter all the time, so the whole village held a meeting to discuss how to solve this problem. It is suggested that, as a general equivalent, the corresponding relationship between other items and gold should be compiled into a table, such as one gram of gold corresponds to a sheep, one gram of gold corresponds to a bag of flour and so on. At this time, Lao Zhang no longer has to carry a bag of flour and pant to Lao Li's house to exchange sheep. He just needs to get a gram of gold from his home, You can go to Lao Li's house and bring back a sheep. Lao Li can exchange this gram of gold for a bag of flour from anyone who is willing to sell flour. Of course, he can also exchange it for anything equivalent to a gram of gold
at this time, bitcun entered the era of physical currency
symbolic currency
the good times are not long. After a period of time, the disadvantages of physical currency also appear. Because there are not many gold mines near bit village, it takes too much time and effort to mine and smelt gold. With the use of gold, it will be worn, lost or deliberately hoarded. Once again, the whole village sat together and began to discuss countermeasures. At this time, someone said that in fact, we don't have to really use gold. Just find a piece of paper and write "one gram of gold". As long as the whole village agrees that this piece of paper is equal to one gram of gold, the problem will be solved. Others agree, but at the same time, there are new problems: the real gold needs to be mined and smelted, and the gold mine is limited, so mining and smelting also need costs, so no one can make a lot of gold out of thin air in a short time, but writing is different. As long as I have enough paper and pen, I can write as much as I like, then it becomes who has more paper, Maybe ten thousand pieces of paper can be exchanged for a sheep (in fact, there will be inflation in Economics)
I think so. However, at this time, someone proposed a solution: This paper is not effective for everyone. We only know the words written by the respected old village head in the village, and everyone knows the words of the old village head. The old village head wrote some paper and gave everyone the same amount of paper according to the gold stock of each family. For example, when Lao Zhang's family had two hundred grams of gold, the old village head gave Lao Zhang 200 pieces of paper with "one gram of gold" written on it, and took Lao Zhang's gold as collateral. In this way, the old village head collected all the gold in the village into his own home, and gave the equivalent amount of paper with words according to the amount of gold handed in by each family. At this time, the villagers can trade with the paper as gold, and everyone can recognize the words of the old village head, and others can't forge them. In addition, if someone's paper is worn too seriously, he can get it to the old village head to exchange for the new equivalent paper. In addition, the old village head promises that if anyone wants to exchange for gold, he will return the equivalent gold to that person as long as he takes the paper back. Because the amount of gold in the paper written by the old village head is the same as that in the real home, so as long as the principle of destroying as many paper as new paper is strictly followed, every effective paper can always be exchanged for the corresponding real gold
at this time, bitcun entered the era of symbolic currency (paper money). The old village head took on the role of the government and the bank<
virtual currency of the central system
a few years later, the old village head has to check a large number of old banknotes every day, write new banknotes, and record various accounts carefully. One comes and two goes. The old village head is overworked and unfortunately drives to the West
bitcun held another plenary meeting to discuss what to do. At this time, er Gouzi, the son of the old village head, volunteered to take over his father's pen and assume the responsibility of currency issuance. The young village head Er Gouzi was very clever. He did it for a few days and found that he didn't really need to write so much paper. It can be done like this: Villagers hand in all the banknotes and destroy them, but Er Gouzi will record the amount of banknotes handed in by each household. If you want to pay later, for example, if Lao Zhang wants to exchange a gram of gold for Lao Li for a sheep, you should call Er Gouzi together to explain that you want to put a gram of gold in Lao Zhang's name under Lao Li's name. Er Gouzi takes out the account book to see if Lao Zhang has a gram of gold in his name. If so, you can subtract one gram from Lao Zhang's name and add one gram to Lao Li's name. In this way, the payment is completed, At this time, Lao Li heard Er Gouzi confirm that the transfer was completed on the phone, so he could rest assured that Lao Zhang would lead the sheep away
at this time, bitcun entered the era of central system virtual currency. Every villager doesn't need to pay in kind. The payment process becomes the change of the number in the account book maintained by Er Gouzi<
distributed virtual currency
the new two dogs are smart, but sometimes they are smart but they are mistaken for smart. One day, er Gouzi was staring at the account book, thinking that how much money each household in the village has is what I say, then I'm not. So his mind a hot, privately from the old Zhang's account to draw ten grams of gold to his name
I thought it would be perfect, but I didn't expect that Lao Zhang also had the habit of keeping accounts. One day, when he was about to pay, er Gouzi told him that his account was out of money. Lao Zhang checked his account book. It was clear that there were still ten grams left, so he took the account book to find Er Gouzi. This check found the transfer without Lao Zhang's consent
east window incident! Bit village is boiling. The impeachment of Er Gouzi is inevitable, but through this incident, we found that the account book is concentrated in one person's hands:
this system completely depends on the personal credit of the account book holder. If this person does not obey the rules and tampers with the account book at will, then the whole monetary system will collapse
if this family is on fire or the account book is stolen, It will also bring a devastating blow to the whole system.
just when people are at a loss, an otaku scientist named Nakamoto came to the stage and told everyone that he has designed a virtual currency system called bitcoin, which does not rely on any central processor, to solve the above problems. Then he spoke slowly about his plan
let's take a look at how Tsung Nakamoto designed this system<
infrastructure construction
account book disclosure mechanism
Nakamoto first explained that the existing account book should be transformed as follows:
the account book will no longer record the balance of each villager, but only record each transaction. That is to record the payer, payee and payment amount of each transaction. As long as the initial state of the account book is determined, each transaction record is reliable and chronological, how much money each person currently holds can be calculated
the account book is changed from private to public, so that any villager can obtain the current complete account book as long as they need it. The account book records all the transaction records from the creation of the account book to the current
as soon as this remark is made, it will be fried immediately. The first one doesn't matter, but the second one is simply unacceptable, because the account book records all the villagers' transactions, so that everyone's privacy is not completely exposed
Nakamoto is in no hurry and takes out a pair of strange things
identity and signature mechanism (public key encryption system)
Mr. Nakamoto said, don't panic. Under his system, no one trades with his real identity, but with a unique code name
he showed the magic things in his hand and said that these two things were called secret seal and seal scanner respectively. Later, he will give each household in the village a secret seal and a seal scanner. The functions of the two are as follows:
the secret seal can be stamped with a seal on the paper. The seal of each seal implies a unique string of characters in the whole village, but it can't be seen by the naked eye. We can't make the corresponding seal through observation
the seal scanner can scan a sealed seal, read out the hidden information, and display a string of characters on the LCD screen
with these two magical things, you can trade without revealing your real identity, and the string of characters implied in the seal is the code of the family. How to use secret seal and seal scanner to trade will be described in detail below<
establish a virtual miner Organization (Mining Group)
next, Nakamoto Tsung recruits virtual miners for the whole village. The recruitment requirements are as follows:
miners are divided into groups, one group can be a single family, or several families can be combined into a group
becoming a miner does not affect the normal use of currency
miners spend a certain amount of time every day engaged in bitcoin "mining" activities, However, unlike gold mining, virtual miners can complete their work at home without taking tools to do field work.
miners have a certain possibility of getting paid. The more efforts they make in mining activities, the more likely they are to get paid.
miners can quit at any time, or new miners can join in at any time.
soon, About a fifth of the villagers join bitcoin miners and are divided into seven groups
set up the initial account book (Genesis block)
next, Nakamoto announced that according to the account book in ergouzi's hand, all the gold mortgaged will be returned to each villager according to the balance recorded in the account book, and then the account book will be completely destroyed
then, Nakamoto takes out a new account book and records some transaction records on the first page of the account book. In particular, the payer column of these records is "system", while the payee is the hidden character corresponding to each seal, representing the initial time. The system allocates a certain number of bitcoins to each household by default, but the number is very small, only a few, Even some unfortunate villagers didn't get bitcoin
then Mr. Nakamoto said that since there are very few bitcoins on the market, you can go back to the era of using gold as currency. Since I'm not the village head, I don't have the right to force you to recognize bitcoin. You can decide whether to accept bitcoin or not. However, with the flow of bitcoin and the activities of miners, bitcoin will graally increase
payment and transaction
8. It's about your network speed. It's not recommended to download the wallet client. It's too troublesome. Now the online wallet technology has been very mature, very convenient to use, the safety factor is also constantly improving. If you don't know the technology, it is recommended to register an online wallet
of course, if you are a technology tycoon, it is recommended that you download the wallet client, and offline storage of bitcoin is currently recognized as the safest way to store bitcoin.
of course, if you are a technology tycoon, it is recommended that you download the wallet client, and offline storage of bitcoin is currently recognized as the safest way to store bitcoin.
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