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Why is blockchain divided
Publish: 2021-05-06 12:05:16
1.
blockchain is a digital account book that can be jointly bookkept, and will record all transactions that have occurred and have been unanimously recognized by the system it's the same as the whole family. You're bookkeeping, and your father and mother are also bookkeeping. They can see the general ledger, but the saved information can't be tampered with any more
In 2008, Nakamoto first proposed the concept of blockchain subsequently, blockchain has become the core component of electronic currency bitcoin, which serves as the public account book for all transactions. By using peer-to-peer network and distributed timestamp server, the blockchain database can be managed independentlyextended data:
type of blockchain
1, public blockchain
any indivial or group in the world can send transactions, and transactions can be effectively confirmed by the blockchain, and anyone can participate in its consensus process. Public blockchain is the earliest and the most widely used blockchain. The virtual digital currencies of bitcoin series are all based on public blockchain. There is only one blockchain corresponding to this currency in the world
2, Alliance (instry) blockchain
instry blockchain: multiple preselected nodes are designated as bookkeepers within a group, and the generation of each block is jointly determined by all preselected nodes (preselected nodes participate in the consensus process), and other access nodes can participate in the transaction, However, regardless of the bookkeeping process (in essence, it is still managed bookkeeping, only distributed bookkeeping, how many preselected nodes, and how to determine the bookkeeper of each block to become the main risk point of the blockchain), anyone else can conct limited query through the open API of the blockchain
3, private blockchain
only uses the general ledger technology of blockchain for bookkeeping. It can be a company or an indivial, and enjoys the write permission of the blockchain. This blockchain is not very different from other distributed storage schemes
2. Decentralized, open and transparent payment and collection technology. If you don't understand, I'll take you to make one. Completely free blockchain digital currency.
3. We know that the state has always advocated "no money" blockchain. That is to say, don't use the chain&# 8204;&# 8204;&# 8204; Currency, support technology development, do not support issuing currency
of course, the coin here is what we often call token, which originally means token (temporary) in computer identity authentication. With the popularity of blockchain and digital currency, people have a variety of translations for token, including token, integral, certificate, logo, indicator, etc
the understanding of token in the market can be divided into two categories
in the first category, 99% of the people think token means token, because 99.9% of the projects do the same thing. Set up a foundation, build a website, write a white paper, and then go to ICO. Because most of the projects are still in the conceptual stage, token itself has no other meaning except trading, so people call it token, which performs the function of currency to some extent
in the second category, professionals and institutions are more willing to translate token into proof of equity, or token. For example, a person's identity certificate, academic certificate, equity, bonds, points, bills, etc., are authentic and tamperable because of the proof of rights and interests. Every proof of interest becomes more secure and reliable through the protection of cryptography
therefore, blockchain is not only a technology, but also a new mode of proction and organization, even a new thinking
so, the question now is, does the blockchain project have to issue currency
answer: you may not issue currency. Not all blockchain projects need to be issued with currency, and it is not necessarily blockchain projects that issue currency
for example, the alliance chain does not need to issue coins. For example, Tencent's q-coin, in principle, is also a kind of currency, but it is not a blockchain project
therefore, the two are not related, but if they are public chains, they need to issue coins. Why
let's take bitcoin as an example. Bitcoin system as a public chain must rely on the existence of bitcoin. Public chain obtains the stability and non tamperability of its system through the nodes distributed all over the world, and these properties are the basis for the existence of public chain
imagine that if the bitcoin system is unstable or can be easily tampered with, bitcoin will be worthless. These nodes are not set up by one or several companies, otherwise they are equivalent to private chain or alliance chain. These nodes must be built dynamically by many participants. And the existence of these nodes must need some kind of incentive, otherwise why do the builders of these nodes want to participate in your system. And this kind of incentive must be integrated with the blockchain system, and it must be money
then why is it currency, not legal currency, such as RMB, as an incentive
if RMB is used as incentive, because RMB should be stored in the RMB account, and the account itself is centralized, so it's easy to be controlled. Just think about why domestic bitcoin exchanges are so afraid of the central bank, and they are afraid of being weaned. In addition, RMB can't react with smart contracts within the blockchain
the electronic currency issued by the central bank can not be used as the original currency and incentive of a blockchain system. Why
if the central bank or a rich person wants to destroy a project, they just need to take out enough e-money to do enough nodes and attack 51%. Therefore, it is impossible to use the e-money issued by the central bank as the original currency and incentive blockchain system. However, blockchain projects with independent native currency and incentives have no such worries
If a person or organization wants to get enough nodes to carry out 51% attacks, it must first get more than 50% enough coins, and the amount of coins in the market is certain, so before it gets enough coins, the soaring price will make it hard for him to bear
therefore, a public chain project must have money. A public chain project without money is like a castrated person
in addition, only through the token and reasonable stimulation of output, can the proction relationship be changed and the value of blockchain be brought into play. Therefore, the project must have token, which can promote the development of the project faster. Token solves the problem of incentive and consensus, and incentive solves the problem of autonomy. The positive autonomous economic ecosystem and the underlying technology of blockchain are a perfect combination.
of course, the coin here is what we often call token, which originally means token (temporary) in computer identity authentication. With the popularity of blockchain and digital currency, people have a variety of translations for token, including token, integral, certificate, logo, indicator, etc
the understanding of token in the market can be divided into two categories
in the first category, 99% of the people think token means token, because 99.9% of the projects do the same thing. Set up a foundation, build a website, write a white paper, and then go to ICO. Because most of the projects are still in the conceptual stage, token itself has no other meaning except trading, so people call it token, which performs the function of currency to some extent
in the second category, professionals and institutions are more willing to translate token into proof of equity, or token. For example, a person's identity certificate, academic certificate, equity, bonds, points, bills, etc., are authentic and tamperable because of the proof of rights and interests. Every proof of interest becomes more secure and reliable through the protection of cryptography
therefore, blockchain is not only a technology, but also a new mode of proction and organization, even a new thinking
so, the question now is, does the blockchain project have to issue currency
answer: you may not issue currency. Not all blockchain projects need to be issued with currency, and it is not necessarily blockchain projects that issue currency
for example, the alliance chain does not need to issue coins. For example, Tencent's q-coin, in principle, is also a kind of currency, but it is not a blockchain project
therefore, the two are not related, but if they are public chains, they need to issue coins. Why
let's take bitcoin as an example. Bitcoin system as a public chain must rely on the existence of bitcoin. Public chain obtains the stability and non tamperability of its system through the nodes distributed all over the world, and these properties are the basis for the existence of public chain
imagine that if the bitcoin system is unstable or can be easily tampered with, bitcoin will be worthless. These nodes are not set up by one or several companies, otherwise they are equivalent to private chain or alliance chain. These nodes must be built dynamically by many participants. And the existence of these nodes must need some kind of incentive, otherwise why do the builders of these nodes want to participate in your system. And this kind of incentive must be integrated with the blockchain system, and it must be money
then why is it currency, not legal currency, such as RMB, as an incentive
if RMB is used as incentive, because RMB should be stored in the RMB account, and the account itself is centralized, so it's easy to be controlled. Just think about why domestic bitcoin exchanges are so afraid of the central bank, and they are afraid of being weaned. In addition, RMB can't react with smart contracts within the blockchain
the electronic currency issued by the central bank can not be used as the original currency and incentive of a blockchain system. Why
if the central bank or a rich person wants to destroy a project, they just need to take out enough e-money to do enough nodes and attack 51%. Therefore, it is impossible to use the e-money issued by the central bank as the original currency and incentive blockchain system. However, blockchain projects with independent native currency and incentives have no such worries
If a person or organization wants to get enough nodes to carry out 51% attacks, it must first get more than 50% enough coins, and the amount of coins in the market is certain, so before it gets enough coins, the soaring price will make it hard for him to bear
therefore, a public chain project must have money. A public chain project without money is like a castrated person
in addition, only through the token and reasonable stimulation of output, can the proction relationship be changed and the value of blockchain be brought into play. Therefore, the project must have token, which can promote the development of the project faster. Token solves the problem of incentive and consensus, and incentive solves the problem of autonomy. The positive autonomous economic ecosystem and the underlying technology of blockchain are a perfect combination.
4. If you want to ask what's the most popular in 2018, I believe you will say it's blockchain
since last year, a variety of digital currencies have emerged in an endless stream, and blockchain has also been on fire
many people are connected with blockchain as soon as they mention currency speculation; As soon as you hear that an enterprise is doing a blockchain, you will immediately ask if you want to issue money
it seems that blockchain is equivalent to digital currency, and the purpose of studying blockchain is to speculate in currency< br />
1
when you are new to blockchain or digital currency, it is reasonable to equate blockchain with currency speculation
after all, if it wasn't for the growing popularity of bitcoin, no one might have paid attention to blockchain technology so far. If it wasn't for more and more people investing in bitcoin, no institution would have issued a variety of other digital currencies
however, after in-depth understanding of blockchain and digital currency, we still think that blockchain is money speculation, so our understanding is really a bit biased
blockchain is the underlying technology of bitcoin. No matter bitcoin, Ethereum, lightcoin or other various tokens, they are all applications based on blockchain technology
but this does not mean that the blockchain can only be used to issue money, just like fish is raised in the water, but it can not be said that fish is water, and hairy crabs and crayfish can grow in the water
in addition to the various tokens we see at present, blockchain has a very broad application prospect
2
so what is a blockchain
to put it clearly, blockchain is: "blockchain is a kind of technical mole or encryption algorithm that is both basic application and top-level design. It breaks the barrier that an information is only saved by one central server or multiple services in the past, and copies the same information to more places at the same time, such as 1 million servers. Only when more than half of the stored information has been tampered with can chaos be caused. "
in a word, understand the relationship between bitcoin and blockchain:
blockchain is a technical concept born from bitcoin encryption technology
bitcoin is a kind of digital virtual currency, followed by the payment currency as a contribution to storage computing power
if you want to store the same information in countless servers, who will store it for free? There has to be a reward. Bitcoin is a reward for accepting free storage. This reward is a virtual thing called bitcoin.
since last year, a variety of digital currencies have emerged in an endless stream, and blockchain has also been on fire
many people are connected with blockchain as soon as they mention currency speculation; As soon as you hear that an enterprise is doing a blockchain, you will immediately ask if you want to issue money
it seems that blockchain is equivalent to digital currency, and the purpose of studying blockchain is to speculate in currency< br />
1
when you are new to blockchain or digital currency, it is reasonable to equate blockchain with currency speculation
after all, if it wasn't for the growing popularity of bitcoin, no one might have paid attention to blockchain technology so far. If it wasn't for more and more people investing in bitcoin, no institution would have issued a variety of other digital currencies
however, after in-depth understanding of blockchain and digital currency, we still think that blockchain is money speculation, so our understanding is really a bit biased
blockchain is the underlying technology of bitcoin. No matter bitcoin, Ethereum, lightcoin or other various tokens, they are all applications based on blockchain technology
but this does not mean that the blockchain can only be used to issue money, just like fish is raised in the water, but it can not be said that fish is water, and hairy crabs and crayfish can grow in the water
in addition to the various tokens we see at present, blockchain has a very broad application prospect
2
so what is a blockchain
to put it clearly, blockchain is: "blockchain is a kind of technical mole or encryption algorithm that is both basic application and top-level design. It breaks the barrier that an information is only saved by one central server or multiple services in the past, and copies the same information to more places at the same time, such as 1 million servers. Only when more than half of the stored information has been tampered with can chaos be caused. "
in a word, understand the relationship between bitcoin and blockchain:
blockchain is a technical concept born from bitcoin encryption technology
bitcoin is a kind of digital virtual currency, followed by the payment currency as a contribution to storage computing power
if you want to store the same information in countless servers, who will store it for free? There has to be a reward. Bitcoin is a reward for accepting free storage. This reward is a virtual thing called bitcoin.
5. Bitcoin is a "digital currency" based on blockchain technology. In 2013, the central bank made it clear that bitcoin, as a specific virtual commodity, does not have the same legal status as currency and cannot and should not be used as currency in the market. The reason why bitcoin has become the "accomplice" of hackers this time lies in the characteristics of bitcoin: anonymity and difficulty in supervision
compared with other ways, using bitcoin to remit money is much more "secret". Normal cross-border remittance will go through the examination of exchange control institutions at all levels, and the transaction records will be recorded by banks and other parties. Transactions exceeding a certain amount should be reported to relevant departments to prevent money laundering and other violations. Bitcoin, with the characteristics of globalization, is usually used as a tool for cross-border payment and remittance. As a kind of network encryption virtual currency, bitcoin has the characteristics of decentralization and anonymity,
capital flow is not easy to track, and it is easier to hide identity
wannacry blackmail virus prevention method:
1. Install the latest security patch for the computer. Microsoft has released patch ms17-010 to fix the system vulnerability of "eternal blue" attack. Please install this security patch as soon as possible; For Windows XP, 2003 and other machines that Microsoft no longer provides security updates, we can use 360 "NSA Arsenal immunity tool" to detect whether there are vulnerabilities in the system, and close the ports affected by the vulnerabilities, so as to avoid being infringed by blackmail software and other viruses
2. Close ports 445, 135, 137, 138 and 139, and close network sharing
3. Strengthen the awareness of network security: don't click the unknown link, don't download the unknown file, don't open the unknown email...
4. Back up the important files in your computer to the mobile hard disk and U disk as soon as possible (regularly in the future), and save the disk offline after the backup
5. It is recommended that users who are still using Windows XP and windows 2003 should upgrade to Windows 7 / windows 10 or windows 2008 / 2012 / 2016 as soon as possible.
compared with other ways, using bitcoin to remit money is much more "secret". Normal cross-border remittance will go through the examination of exchange control institutions at all levels, and the transaction records will be recorded by banks and other parties. Transactions exceeding a certain amount should be reported to relevant departments to prevent money laundering and other violations. Bitcoin, with the characteristics of globalization, is usually used as a tool for cross-border payment and remittance. As a kind of network encryption virtual currency, bitcoin has the characteristics of decentralization and anonymity,
capital flow is not easy to track, and it is easier to hide identity
wannacry blackmail virus prevention method:
1. Install the latest security patch for the computer. Microsoft has released patch ms17-010 to fix the system vulnerability of "eternal blue" attack. Please install this security patch as soon as possible; For Windows XP, 2003 and other machines that Microsoft no longer provides security updates, we can use 360 "NSA Arsenal immunity tool" to detect whether there are vulnerabilities in the system, and close the ports affected by the vulnerabilities, so as to avoid being infringed by blackmail software and other viruses
2. Close ports 445, 135, 137, 138 and 139, and close network sharing
3. Strengthen the awareness of network security: don't click the unknown link, don't download the unknown file, don't open the unknown email...
4. Back up the important files in your computer to the mobile hard disk and U disk as soon as possible (regularly in the future), and save the disk offline after the backup
5. It is recommended that users who are still using Windows XP and windows 2003 should upgrade to Windows 7 / windows 10 or windows 2008 / 2012 / 2016 as soon as possible.
6. q: What is blockchain technology
A: blockchain technology can be understood as a public accounting mechanism, which is more a technical solution than a specific proct. The basic idea is to establish a set of public account books on the Internet, in which all users in the network keep accounts and check accounts together, so as to ensure the authenticity and non tamperability of information
the reason why it is called "blockchain" is that the structure of blockchain storage data is a chain composed of "storage blocks" on the network. Each block contains all the information exchange data in the network within a certain period of time, and the chain grows with time.
A: blockchain technology can be understood as a public accounting mechanism, which is more a technical solution than a specific proct. The basic idea is to establish a set of public account books on the Internet, in which all users in the network keep accounts and check accounts together, so as to ensure the authenticity and non tamperability of information
the reason why it is called "blockchain" is that the structure of blockchain storage data is a chain composed of "storage blocks" on the network. Each block contains all the information exchange data in the network within a certain period of time, and the chain grows with time.
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