Know bitcoin
Publish: 2021-04-25 01:14:23
1. bitcoin is an electronic payment currency. You can understand it as RMB on the Internet. blockchain technology is the technology to develop this kind of currency. Generally speaking, bitcoin was invented with blockchain technology. At present, blockchain can be applied to the Internet of things, intelligent manufacturing, supply chain management, digital assets and other fields. It is useful to use this technology. Here we can recommend a Domenech jewelry's Maobei digital virtual currency, which is a good practical application scenario with the combination of physical jewelry and blockchain technology. Please adopt it
2.
Bitcoin is a kind of virtual encrypted digital currency in the form of P2P. Different from all currencies, bitcoin does not rely on specific currency institutions. It is generated by a large number of calculations based on specific algorithms. Bitcoin economy uses the distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, And the use of cryptography design to ensure the security of all aspects of money circulation. However, on September 4, 2017, the central bank and other seven ministries and commissions announced that virtual currency trading is prohibited in China, and bitcoin is prohibited from circulating in China
according to the first article of the notice on preventing the financing risks of token issuance, we should accurately understand the essential attributes of token issuance financing activities. Token issuance financing refers to the illegal sale and circulation of tokens by the financing subject to raise the so-called virtual currency such as bitcoin and ether coin from investors. In essence, it is an unauthorized illegal public financing behavior, which is suspected of illegal sale of token bills, illegal issuance of securities, illegal fund-raising, financial fraud, pyramid schemes and other illegal criminal activities
Relevant departments will closely monitor relevant developments, strengthen cooperation with judicial departments and local governments, strictly enforce the law in accordance with the current working mechanism, and resolutely deal with market chaos. If suspected crimes are found, they will be transferred to judicial organs. The token or "virtual currency" used in token issuance financing is not issued by the monetary authority, does not have such monetary attributes as legal compensation and compulsion, does not have the same legal status as currency, and cannot and should not be used as currency in the market 
extended information:
Article 3 of the announcement on preventing the financing risk of token issuance strengthens the management of token financing trading platform. From the date of this announcement, any so-called token financing trading platform shall not engage in the exchange business between legal tender and token and "virtual currency", nor buy or sell token or "virtual currency" as a central counterpart, nor provide pricing, information intermediary and other services for token or "virtual currency"
for the token financing trading platform with illegal problems, the financial management department will request the competent department of telecommunications to close its website platform and mobile app according to law, request the network information department to remove the mobile app from the app store, and request the instrial and commercial administration department to revoke its business license according to law
Article 4 financial institutions and non bank payment institutions shall not carry out business related to token issuance financing transactions. All financial institutions and non bank payment institutions shall not directly or indirectly provide procts or services such as account opening, registration, trading, clearing and settlement for token issuance and financing and "virtual currency", nor undertake insurance business related to token and "virtual currency" or include token and "virtual currency" into the scope of insurance liability. Financial institutions and non bank payment institutions shall report to the relevant departments in a timely manner if they find clues of violation of laws and regulations in token issuance financing transactions
3. Throughout history, there have been cases of gold, goods and even land confiscation in times of crisis. It is also disturbing that, as we have seen in Venezuela, people there are struggling with high inflation. Sometimes it is extremely difficult to convert money into another currency, which makes people feel helpless and can only watch their life savings be worthless. Bitcoin is very different. It is in electronic form and has no boundary restrictions. It can be transferred without any intermediary. Anyone who connects to a mobile device or the Internet can use it. All transactions are permanently recorded in the public ledger, and there is no dispute about ownership
in a recent article in the New York Times, a Venezuelan economist described how bitcoin became a part of Venezuela's daily life, so that on a mainstream bitcoin trading platform, Venezuela's trading volume ranked second only to Russia in the world. But bitcoin is not just used to protect wealth in extreme conditions. In general, bitcoin is also an excellent choice for portfolio diversification, and it should be seen as part of a comprehensive wealth preservation strategy.
in a recent article in the New York Times, a Venezuelan economist described how bitcoin became a part of Venezuela's daily life, so that on a mainstream bitcoin trading platform, Venezuela's trading volume ranked second only to Russia in the world. But bitcoin is not just used to protect wealth in extreme conditions. In general, bitcoin is also an excellent choice for portfolio diversification, and it should be seen as part of a comprehensive wealth preservation strategy.
4. Go to bitcoin news network to see more bitcoin news, as well as market and technology
the birth of bitcoin
the birth of bitcoin should be on November 1, 2008. A man with the pseudonym of "Nakamoto Tsung" published a paper on the Internet. In this paper, he described in detail a new monetary system, which he named "bitcoin"
then, on January 3 of the next year, the first bitcoin program was born in the hands of Nakamoto Tsung, along with the first 50 bitcoins from mining. After that, he began to fade out until he disappeared completely
so far, people have not found out the real identity of this person, even if today's operators, Internet giants and the government have firmly grasped people's behavior on the Internet
he often switches between American and British English when he speaks. He goes online at different times of the day at random to hide his nationality and time zone; He hides his IP address, encrypts his email, and deliberately forges some writing and speaking styles to confuse the public; Besides, he is also an expert in cryptography. By the way, the place where he published his paper is called & quot; Cryptography mailing list & quot
so bitcoin was born with a hacker spirit: against the censorship imposed by any force
of course, we can also see that if a hacker who invented the anonymous currency system can't be anonymous, the whole thing will become a joke< But fortunately, Nakamoto didn't let us down
1. What is currency
I find that I can't run this section in any case to clarify what is bitcoin. I am not an expert in the field of economics. I can only talk about this issue in a very superficial and intuitive sense However, as far as the theme expressed in the title is concerned, it seems to be enough)
it has been mentioned in senior high school textbooks (remember?), Money is the medium to store value. If a thing wants to become money, it must meet the following requirements:
1) scarcity
that's why gold can be used and sand can't be used as money. Scarcity can be understood as the difficulty of obtaining it. The more scarce it is, the more difficult it is to obtain it. An intuitive understanding is as follows: assuming that your monthly salary is 5000 yuan, it means that the scarcity of RMB is just such a degree, that is, you have to pay a month's labor to get 5000 yuan. You won't agree to pay your salary with 5000 grains of sand, because instead of working for a month to get it, you can easily get it by walking around the beach
how does the current financial system guarantee the scarcity of money? Control distribution. The issue of money is firmly in the hands of the central bank, so that the amount of money can be controlled (so you now know that it is illegal to print money without permission). Back to the example just now, you agree to pay you a month's salary with 5000 yuan because the circulation of RMB has just reached this level. If the circulation of RMB doubles and the scarcity decreases, you should ask for 10000 yuan to pay your salary (but the response of the market is often not so fast. During this period, your wealth is actually deprived - your labor should have received 10000 yuan, but only 5000 yuan in return)
2) transactional
of course, the purpose of currency is to trade. As many people tell you, money is spent, not brought into the coffin. So in addition to meeting scarcity, the more convenient it is for a thing to trade, the more it meets the standard of ideal currency. Therefore, in the history of currency, silver dollar has replaced shells, paper money has replaced silver dollar, and digital currency is graally replacing paper money
the "transaction" here refers to the transfer of property from one party to the other, that is, the decrease of one party's property and the corresponding increase of the other party. For physical currency, it happens very naturally. A wants to give 100 yuan to B. when the 100 yuan note is transferred from a's hand to B's hand, the transaction is completed. A's property is reced by 100 yuan and B's property is increased by 100 yuan. There is no third party involved in this process, which is completely a private act between a and B; However, when the transaction takes place at the level of digital currency, it is not so simple. Party A has to give 100 yuan to Party B. how can we ensure that the transaction is completed? Suppose that a and B record their wealth on their respective computers, how can we ensure that when B adds 100 yuan to them, a actually subtracts 100 yuan from them? Now we have to bring in a third party - the guy we call the bank. When a wants to transfer 100 yuan to B, he doesn't directly give it to B, but to the bank, "please transfer my 100 yuan to B", so the bank dected 100 yuan from a's account and added 100 yuan to B's account Let's assume that it generously does not charge any transaction fee)
the above is a rough model of modern monetary system. The biggest disadvantage of this model is that people have to trust a central system
the transaction of digital currency must rely on the bank, and a person's bank account number may be censored, restricted or even deprived. When one party wants to transfer his wealth to the other party, the bank can charge a high fee or refuse directly (for example, you try to remit a sum of money to a relative in the United States)
the issuance of money must rely on the central bank. Well, it's a well-known secret: the currency has been devaluing, or over issuing (think of the $100 20 years ago and the $100 now). I quote two paragraphs, one of which is Keynes's saying, "through a continuous process of inflation, the government can confiscate a part of citizens' wealth secretly and unknowingly. In this way, we can deprive the people of their wealth at will, while making the majority poor, we can make the minority rich, Another paragraph, from Hayek, "the government can not restrain the impulse to issue money indiscriminately."
is it possible to design a monetary system in which we do not need a central institution and are not forced to trust any third party, so as to make the issuance of currency transparent and controllable, and the transaction of currency private and secure
guess what
2. What is bitcoin
so we can now answer that bitcoin is an e-money system with decentralized distribution and transaction. In this system, the circulation of money is transparent and predictable, and the transaction of money uses the cooperation of the whole network to ensure the security of the transaction
next, I will graally dismantle the principle of bitcoin. It should be noted that bitcoin, as a proct already in use, has a lot of details. The purpose of this article is to explain the basic principles of bitcoin to readers without technical background, so these details will not be covered. For example, the address of the wallet is not the public key, but the second hash value of the public key; The difficulty requirement of blockchain is not to hash all the contents of blockchain once; wait. But for the sake of brevity, without affecting the explanation of the basic principles, these are simplified. I hope you can understand them
2.0. Bitcoin network is composed of many nodes running bitcoin programs
bitcoin is a network composed of many equal nodes
a node is a bitcoin program. Any machine that can connect to the Internet and have certain computing power can run this program - so your home computer can also be used as a node in the bitcoin network:)
nodes can communicate with each other. At the same time, bitcoin has a set of mechanism that allows a node to send messages to all other nodes, This behavior is called "broadcasting."
2.1. Blockchain - a public account book
let's go back to the example of banks. The most basic function of a bank is to maintain an account book, which only needs to record every transaction truthfully. For example, Wang Xiaoming transferred 30 yuan to Zhang Damao on X, year X; On y, y, y, y, Zhang Da Mao transferred 12 yuan to Li Xiao Dou, and so on. According to this account book, we can find all the transaction records of a person, so we can calculate the current account balance of the person. For example, since Li Xiaodou started to build a bank account, the total amount of transactions transferred in is 500 yuan, and the total amount of transactions transferred out is 300 yuan. Then it can be calculated that the balance of Li Xiaodou's account must be 200 yuan at this time
maintain this account book, and as the only maintainer (only the bank has the right to view and modify), the bank's responsibility as a trading center is completed
bitcoin also has an account book, but unlike banks, this account book is open and anyone can view and review it
this account book is called & quot; Blockchain & quot;. You can think of blockchain as a pamphlet. Every page of the pamphlet is full of transaction information, and new pages are constantly added<
2.2 Wallet - an account composed of a pair of public keys and private keys
the above section explains what a bitcoin account book is. This section will explain the ownership of funds in this account book, that is, the account system of bitcoin
there are essential differences between accounts in bitcoin and bank accounts
under a bank account, the bank records the identity information of the owner of the account (think back to the information you submitted when you went to the bank to open an account: photo, ID card, telephone number, home address...), so as long as you can prove your identity to the bank, you will get the ownership of the property under your name. In this model, the bank plays the role of an omniscient God: he knows the wealth information of real people. We have no choice but to pray to God not to let our information out or use it for evil
in the world of bitcoin, there is no such institution as bank, which will not force people to reveal their identities in exchange for the security of funds. Bitcoin's account is simply composed of two strings of numbers, which are called "public key" and "private key" respectively, and there is nothing else
the mathematical characteristics of these two numbers - a data encrypted by a private key can only be decrypted by a public key, so-called asymmetric encryption - enable them to perfectly implement the functions required by an account (called a wallet in the bitcoin world)
we take the public key as the account address - also known as the wallet address in the bitcoin world - which is similar to the account number in the banking system, that is, when you tell someone "please call 300 yuan for my account number", you need to tell them. For the bank, it is "China Merchants Bank 6214850200251100", compared with the special currency, it is "
the private key is the * only * certificate to prove the ownership of the wallet. You can hold it by proving that you are the private key of the wallet
the birth of bitcoin
the birth of bitcoin should be on November 1, 2008. A man with the pseudonym of "Nakamoto Tsung" published a paper on the Internet. In this paper, he described in detail a new monetary system, which he named "bitcoin"
then, on January 3 of the next year, the first bitcoin program was born in the hands of Nakamoto Tsung, along with the first 50 bitcoins from mining. After that, he began to fade out until he disappeared completely
so far, people have not found out the real identity of this person, even if today's operators, Internet giants and the government have firmly grasped people's behavior on the Internet
he often switches between American and British English when he speaks. He goes online at different times of the day at random to hide his nationality and time zone; He hides his IP address, encrypts his email, and deliberately forges some writing and speaking styles to confuse the public; Besides, he is also an expert in cryptography. By the way, the place where he published his paper is called & quot; Cryptography mailing list & quot
so bitcoin was born with a hacker spirit: against the censorship imposed by any force
of course, we can also see that if a hacker who invented the anonymous currency system can't be anonymous, the whole thing will become a joke< But fortunately, Nakamoto didn't let us down
1. What is currency
I find that I can't run this section in any case to clarify what is bitcoin. I am not an expert in the field of economics. I can only talk about this issue in a very superficial and intuitive sense However, as far as the theme expressed in the title is concerned, it seems to be enough)
it has been mentioned in senior high school textbooks (remember?), Money is the medium to store value. If a thing wants to become money, it must meet the following requirements:
1) scarcity
that's why gold can be used and sand can't be used as money. Scarcity can be understood as the difficulty of obtaining it. The more scarce it is, the more difficult it is to obtain it. An intuitive understanding is as follows: assuming that your monthly salary is 5000 yuan, it means that the scarcity of RMB is just such a degree, that is, you have to pay a month's labor to get 5000 yuan. You won't agree to pay your salary with 5000 grains of sand, because instead of working for a month to get it, you can easily get it by walking around the beach
how does the current financial system guarantee the scarcity of money? Control distribution. The issue of money is firmly in the hands of the central bank, so that the amount of money can be controlled (so you now know that it is illegal to print money without permission). Back to the example just now, you agree to pay you a month's salary with 5000 yuan because the circulation of RMB has just reached this level. If the circulation of RMB doubles and the scarcity decreases, you should ask for 10000 yuan to pay your salary (but the response of the market is often not so fast. During this period, your wealth is actually deprived - your labor should have received 10000 yuan, but only 5000 yuan in return)
2) transactional
of course, the purpose of currency is to trade. As many people tell you, money is spent, not brought into the coffin. So in addition to meeting scarcity, the more convenient it is for a thing to trade, the more it meets the standard of ideal currency. Therefore, in the history of currency, silver dollar has replaced shells, paper money has replaced silver dollar, and digital currency is graally replacing paper money
the "transaction" here refers to the transfer of property from one party to the other, that is, the decrease of one party's property and the corresponding increase of the other party. For physical currency, it happens very naturally. A wants to give 100 yuan to B. when the 100 yuan note is transferred from a's hand to B's hand, the transaction is completed. A's property is reced by 100 yuan and B's property is increased by 100 yuan. There is no third party involved in this process, which is completely a private act between a and B; However, when the transaction takes place at the level of digital currency, it is not so simple. Party A has to give 100 yuan to Party B. how can we ensure that the transaction is completed? Suppose that a and B record their wealth on their respective computers, how can we ensure that when B adds 100 yuan to them, a actually subtracts 100 yuan from them? Now we have to bring in a third party - the guy we call the bank. When a wants to transfer 100 yuan to B, he doesn't directly give it to B, but to the bank, "please transfer my 100 yuan to B", so the bank dected 100 yuan from a's account and added 100 yuan to B's account Let's assume that it generously does not charge any transaction fee)
the above is a rough model of modern monetary system. The biggest disadvantage of this model is that people have to trust a central system
the transaction of digital currency must rely on the bank, and a person's bank account number may be censored, restricted or even deprived. When one party wants to transfer his wealth to the other party, the bank can charge a high fee or refuse directly (for example, you try to remit a sum of money to a relative in the United States)
the issuance of money must rely on the central bank. Well, it's a well-known secret: the currency has been devaluing, or over issuing (think of the $100 20 years ago and the $100 now). I quote two paragraphs, one of which is Keynes's saying, "through a continuous process of inflation, the government can confiscate a part of citizens' wealth secretly and unknowingly. In this way, we can deprive the people of their wealth at will, while making the majority poor, we can make the minority rich, Another paragraph, from Hayek, "the government can not restrain the impulse to issue money indiscriminately."
is it possible to design a monetary system in which we do not need a central institution and are not forced to trust any third party, so as to make the issuance of currency transparent and controllable, and the transaction of currency private and secure
guess what
2. What is bitcoin
so we can now answer that bitcoin is an e-money system with decentralized distribution and transaction. In this system, the circulation of money is transparent and predictable, and the transaction of money uses the cooperation of the whole network to ensure the security of the transaction
next, I will graally dismantle the principle of bitcoin. It should be noted that bitcoin, as a proct already in use, has a lot of details. The purpose of this article is to explain the basic principles of bitcoin to readers without technical background, so these details will not be covered. For example, the address of the wallet is not the public key, but the second hash value of the public key; The difficulty requirement of blockchain is not to hash all the contents of blockchain once; wait. But for the sake of brevity, without affecting the explanation of the basic principles, these are simplified. I hope you can understand them
2.0. Bitcoin network is composed of many nodes running bitcoin programs
bitcoin is a network composed of many equal nodes
a node is a bitcoin program. Any machine that can connect to the Internet and have certain computing power can run this program - so your home computer can also be used as a node in the bitcoin network:)
nodes can communicate with each other. At the same time, bitcoin has a set of mechanism that allows a node to send messages to all other nodes, This behavior is called "broadcasting."
2.1. Blockchain - a public account book
let's go back to the example of banks. The most basic function of a bank is to maintain an account book, which only needs to record every transaction truthfully. For example, Wang Xiaoming transferred 30 yuan to Zhang Damao on X, year X; On y, y, y, y, Zhang Da Mao transferred 12 yuan to Li Xiao Dou, and so on. According to this account book, we can find all the transaction records of a person, so we can calculate the current account balance of the person. For example, since Li Xiaodou started to build a bank account, the total amount of transactions transferred in is 500 yuan, and the total amount of transactions transferred out is 300 yuan. Then it can be calculated that the balance of Li Xiaodou's account must be 200 yuan at this time
maintain this account book, and as the only maintainer (only the bank has the right to view and modify), the bank's responsibility as a trading center is completed
bitcoin also has an account book, but unlike banks, this account book is open and anyone can view and review it
this account book is called & quot; Blockchain & quot;. You can think of blockchain as a pamphlet. Every page of the pamphlet is full of transaction information, and new pages are constantly added<
2.2 Wallet - an account composed of a pair of public keys and private keys
the above section explains what a bitcoin account book is. This section will explain the ownership of funds in this account book, that is, the account system of bitcoin
there are essential differences between accounts in bitcoin and bank accounts
under a bank account, the bank records the identity information of the owner of the account (think back to the information you submitted when you went to the bank to open an account: photo, ID card, telephone number, home address...), so as long as you can prove your identity to the bank, you will get the ownership of the property under your name. In this model, the bank plays the role of an omniscient God: he knows the wealth information of real people. We have no choice but to pray to God not to let our information out or use it for evil
in the world of bitcoin, there is no such institution as bank, which will not force people to reveal their identities in exchange for the security of funds. Bitcoin's account is simply composed of two strings of numbers, which are called "public key" and "private key" respectively, and there is nothing else
the mathematical characteristics of these two numbers - a data encrypted by a private key can only be decrypted by a public key, so-called asymmetric encryption - enable them to perfectly implement the functions required by an account (called a wallet in the bitcoin world)
we take the public key as the account address - also known as the wallet address in the bitcoin world - which is similar to the account number in the banking system, that is, when you tell someone "please call 300 yuan for my account number", you need to tell them. For the bank, it is "China Merchants Bank 6214850200251100", compared with the special currency, it is "
the private key is the * only * certificate to prove the ownership of the wallet. You can hold it by proving that you are the private key of the wallet
5. Bitcoin system mainly uses hash algorithm and asymmetric encryption algorithm in cryptography to ensure the security of the transaction: on the premise of the transaction information being open in the whole network, the one-way property of hash algorithm protects the privacy information of both sides of the transaction; Asymmetric encryption algorithm can ensure that your bitcoin will not be transferred to other people's pocket ring the transaction< In theory, these cryptography principles can guarantee the realization of bitcoin's basic functions as a "decentralized currency", but it has some problems:
the first problem is system security:
we say that in the world of bitcoin, all information is expressed in the form of code through hash operation
then, where there is code, there must be loopholes, which give hackers an opportunity to take advantage of
as early as 2010, shortly after the emergence of bitcoin, a hacker took advantage of the vulnerability of bitcoin's core software to create hundreds of billions of bitcoins. It's like a person mastering the banknote printing machine. It's terrible. Or, hackers directly hack into our computers and steal our private keys, which will also cause us heavy losses
the second problem is that the transaction processing speed is too slow:
in the bitcoin system, there are up to seven transactions per second, which obviously can not meet the normal transaction requirements. We need to know that Alipay, Taobao and WeChat can handle hundreds of thousands or even millions of transactions every second. A deal can only be processed in 1-2 seconds. If bitcoin is used for daily money, then we will pay 1-2 yuan to handle it successfully.
the third problem is that bitcoin mining consumes too much power: Mining requires professional mining machines, which have high computing power, but consume a huge amount of power. Moreover, according to the current market, it is difficult to recover the cost of buying a mining machine for a year. Therefore, some people doubt: what is the significance of consuming so much power to maintain a system with such slow trading speed
the fourth problem is the regulatory attitude:
at present, the attitude of various countries towards bitcoin is very polarized: the supporting countries and retail stores accept bitcoin for payment, and there are also bitcoin ATMs; Countries that don't support it will crack down on it
to sum up, if bitcoin is measured by a monetary system, it must have various shortcomings. However, we can not deny the brilliance of bitcoin: bitcoin represents not only a new set of "decentralized" currency system, but also the origin of blockchain technology and a new ideology, which has far-reaching influence
from the perspective of bitcoin's own function currency:
bitcoin is the largest digital currency so far. It is an important application in the era of blockchain 1.0 and the first application of blockchain. Under the premise of decentralization, bitcoin realizes the functions of digital currency in the stages of issuance, payment and circulation, which is a new means of payment
from the perspective of bitcoin's underlying technology, blockchain:
with the increasing attention of bitcoin, blockchain, as its underlying technology, is becoming more and more well known by the public. Blockchain has graally separated from digital currency and penetrated into many commercial fields. Different instries hope to apply bitcoin Technology to our real life, Through a variety of application scenarios, let us get a better experience
from the perspective of bitcoin ideology:
it has set off a great ideological storm. The "decentralization" and consensus mechanism of bitcoin is a new ideology in the current centralized society. Throughout history, whether the Renaissance or the enlightenment, these are all ideological changes under specific historical conditions. The popularization of these new ideas and new consciousness will take a long time to be accepted by all. In terms of the influence of bitcoin:
digital currency has been accepted and recognized by some national markets, resulting in a large number of digital currency trading platforms and the emergence of a large number of counterfeit currencies. These counterfeit currencies have further evolved into a new financing mode, writing the myth of sudden wealth, which has also led to the proliferation of cheating under the banner of digital currency, such as air currency and pyramid selling currency
in short, bitcoin has outlined a grand blueprint, that is, the currency in the future will no longer depend on the release of central banks, but on the global currency unification. However, from the current situation, the blockchain 1.0 era, represented by bitcoin, only meets the basic functions of digital currency and cannot be popularized to other instries
however, in a word, bitcoin: there are shortcomings in the United States and China, and it is hard to cover up the edge.
the first problem is system security:
we say that in the world of bitcoin, all information is expressed in the form of code through hash operation
then, where there is code, there must be loopholes, which give hackers an opportunity to take advantage of
as early as 2010, shortly after the emergence of bitcoin, a hacker took advantage of the vulnerability of bitcoin's core software to create hundreds of billions of bitcoins. It's like a person mastering the banknote printing machine. It's terrible. Or, hackers directly hack into our computers and steal our private keys, which will also cause us heavy losses
the second problem is that the transaction processing speed is too slow:
in the bitcoin system, there are up to seven transactions per second, which obviously can not meet the normal transaction requirements. We need to know that Alipay, Taobao and WeChat can handle hundreds of thousands or even millions of transactions every second. A deal can only be processed in 1-2 seconds. If bitcoin is used for daily money, then we will pay 1-2 yuan to handle it successfully.
the third problem is that bitcoin mining consumes too much power: Mining requires professional mining machines, which have high computing power, but consume a huge amount of power. Moreover, according to the current market, it is difficult to recover the cost of buying a mining machine for a year. Therefore, some people doubt: what is the significance of consuming so much power to maintain a system with such slow trading speed
the fourth problem is the regulatory attitude:
at present, the attitude of various countries towards bitcoin is very polarized: the supporting countries and retail stores accept bitcoin for payment, and there are also bitcoin ATMs; Countries that don't support it will crack down on it
to sum up, if bitcoin is measured by a monetary system, it must have various shortcomings. However, we can not deny the brilliance of bitcoin: bitcoin represents not only a new set of "decentralized" currency system, but also the origin of blockchain technology and a new ideology, which has far-reaching influence
from the perspective of bitcoin's own function currency:
bitcoin is the largest digital currency so far. It is an important application in the era of blockchain 1.0 and the first application of blockchain. Under the premise of decentralization, bitcoin realizes the functions of digital currency in the stages of issuance, payment and circulation, which is a new means of payment
from the perspective of bitcoin's underlying technology, blockchain:
with the increasing attention of bitcoin, blockchain, as its underlying technology, is becoming more and more well known by the public. Blockchain has graally separated from digital currency and penetrated into many commercial fields. Different instries hope to apply bitcoin Technology to our real life, Through a variety of application scenarios, let us get a better experience
from the perspective of bitcoin ideology:
it has set off a great ideological storm. The "decentralization" and consensus mechanism of bitcoin is a new ideology in the current centralized society. Throughout history, whether the Renaissance or the enlightenment, these are all ideological changes under specific historical conditions. The popularization of these new ideas and new consciousness will take a long time to be accepted by all. In terms of the influence of bitcoin:
digital currency has been accepted and recognized by some national markets, resulting in a large number of digital currency trading platforms and the emergence of a large number of counterfeit currencies. These counterfeit currencies have further evolved into a new financing mode, writing the myth of sudden wealth, which has also led to the proliferation of cheating under the banner of digital currency, such as air currency and pyramid selling currency
in short, bitcoin has outlined a grand blueprint, that is, the currency in the future will no longer depend on the release of central banks, but on the global currency unification. However, from the current situation, the blockchain 1.0 era, represented by bitcoin, only meets the basic functions of digital currency and cannot be popularized to other instries
however, in a word, bitcoin: there are shortcomings in the United States and China, and it is hard to cover up the edge.
6. Hello, there is no weakness of bitcoin. The bitcoin network is robust, but the bitcoin trading platform is fragile. Trading platform is usually a website, which will be attacked by hackers or shut down by competent authorities
transaction confirmation takes a long time. When bitcoin wallet is first installed, it will consume a lot of time to download historical transaction data blocks. While bitcoin transaction, in order to confirm the accuracy of data, it will take some time to interact with P2P network, and the transaction will be completed only after the whole network is confirmed
the price fluctuates greatly. Due to the intervention of a large number of speculators, the price of bitcoin for cash fluctuates like a roller coaster. Making bitcoin more suitable for speculation rather than anonymous trading
the public did not understand the principle, and the traditional financial practitioners resisted. Active netizens understand the principle of P2P network and know that bitcoin has no legal person to manipulate and control. But the public doesn't understand, and many people can't even tell the difference between bitcoin and q-coin“ "No issuer" is the advantage of bitcoin, but in the view of traditional financial practitioners, "no issuer" currency is worthless.
transaction confirmation takes a long time. When bitcoin wallet is first installed, it will consume a lot of time to download historical transaction data blocks. While bitcoin transaction, in order to confirm the accuracy of data, it will take some time to interact with P2P network, and the transaction will be completed only after the whole network is confirmed
the price fluctuates greatly. Due to the intervention of a large number of speculators, the price of bitcoin for cash fluctuates like a roller coaster. Making bitcoin more suitable for speculation rather than anonymous trading
the public did not understand the principle, and the traditional financial practitioners resisted. Active netizens understand the principle of P2P network and know that bitcoin has no legal person to manipulate and control. But the public doesn't understand, and many people can't even tell the difference between bitcoin and q-coin“ "No issuer" is the advantage of bitcoin, but in the view of traditional financial practitioners, "no issuer" currency is worthless.
7. The price of bitcoin is determined by the market. If it's a bit mysterious, it's the result of fighting among various forces: the makers and the retail investors, the bulls and the bears. Moreover, the market is 7 * 24, with people or trading robots operating at fixed points sooner or later. The price fluctuation is very normal
the sudden rise and fall on this day may indicate what happened in the primary market. You can pay attention to the news, and the makers like to operate through the news, which depends on your investment level< br />
8. Bitcoin has two kinds of names: broad sense bitcoin and narrow sense bitcoin. Generally speaking, bitcoin refers to broad sense bitcoin. Before August 1, 2016, bitcoin was a complete bitcoin. Now it has been divided into three coins, including bitcoin (SV), bitcoin (core) and bitcoin (cash). Therefore, the broad sense of bitcoin refers to the combination of these three currencies. In a narrow sense, bitcoin refers to the core, because in the process of bifurcation, the price is temporarily the highest, so it inherits the name of the old bitcoin. In the process of future development, who can win is the real bitcoin. At present, the development path of bitcoin (SV) is most in line with the vision of bitcoin.
9. Bitcoin is a kind of universal encrypted electronic currency in the world, and it is completely autonomous by users. The concept of bitcoin was first proposed by Nakamoto in 2009. Unlike most currencies, bitcoin does not rely on specific currency institutions to issue. It is generated by a large number of calculations based on specific algorithms. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses cryptography design to ensure the security of all aspects of money circulation
10.
Mini World penguin is a special creature in the game. Taming requires skill. So what does Mini World Penguin eat? How to tame Mini World penguins? Let's get to know it with Xiaobian
What do penguins eat in mini world
Mini World Penguin feeding method Penguins need cocoa beans to breed This Antarctic born thing likes to eat tropical food very much)
2 Little penguin is a cute face of blood ah
To breed, they first go to the rainforest to find cocoa beans, and then go to the ice to find penguins
It sounds like it's very difficult& mdash; The guy who eats cocoa beans loses the fish
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