Blockchain Renaissance
blockchain is a term in the field of information technology. In essence, it is a shared database. The data or information stored in it is characterized by "unforgeability", "trace in the whole process", "traceability", "openness and transparency" and "collective maintenance". Based on these characteristics, blockchain technology has laid a solid "trust" foundation, created a reliable "cooperation" mechanism, and has broad application prospects
on January 10, 2019, the state Internet Information Office issued the regulations on the management of blockchain information services. In October 24, 2019, ring the eighteenth collective learning of the Central Political Bureau, general secretary Xi Jinping stressed that "block chain as an important breakthrough in core technology and independent innovation", "accelerating the development of block chain technology and instrial innovation". "Blockchain" has entered the public field of vision and become the focus of social attention
on December 2, 2019, the word was selected into the top ten catchwords of "biting words" in 2019
extended data:
Application of blockchain Finance:
since 2016, the major financial giants have also carried out blockchain innovation projects to explore the possibility of applying blockchain Technology in various financial scenarios. In particular, Puyin group took the lead in creating a "blockchain +" standard digital currency
standard digital currency refers to the process of assets identification, evaluation, right confirmation and insurance completed by a third party organization, which is written into the blockchain through careful digital algorithm to form the standard corresponding relationship between assets and digital currency, which is called standard digital currency
in order to realize the great leap forward development of blockchain finance, promote the new development of China's economy, accelerate the circulation of global assets, and realize the dream of rejuvenation that has been struggling for generations, Puyin group will hold the Guiyang strategic development ceremony of Puyin blockchain finance in Guizhou on December 9, 2016
the meeting will discuss the realization of digital circulation of assets by blockchain, the financial transaction mode of blockchain, and the application of blockchain services and social public instry. This conference will mark the beginning of the application of blockchain finance and the change and development of the new financial ecology
on June 1, 2020, Xinhua news agency was authorized to broadcast the "overall plan for the construction of Hainan free trade port" issued by the CPC Central Committee and the State Council, which will "actively participate in the formulation of international rules for cross-border data flow, and establish standards and rules for data rights confirmation, data trading, data security and blockchain finance" as one of the key tasks of Hainan free trade port before 2035
Blockchain is a term in the field of information technology. In essence, it is a shared database. The data or information stored in it is characterized by "unforgeability", "trace in the whole process", "traceability", "openness and transparency" and "collective maintenance". Based on these characteristics, blockchain technology has laid a solid "trust" foundation, created a reliable "cooperation" mechanism, and has broad application prospects
on January 10, 2019, the state Internet Information Office issued the regulations on the management of blockchain information services. In October 24, 2019, ring the eighteenth collective learning of the Central Political Bureau, general secretary Xi Jinping stressed that "block chain as an important breakthrough in core technology and independent innovation", "accelerating the development of block chain technology and instrial innovation". "Blockchain" has entered the public field of vision and become the focus of social attention
extended data:
related extension: blockchain financial application:
since 2016, the major financial giants have also carried out blockchain innovation projects to explore the possibility of applying blockchain technology in various financial scenarios. In particular, Puyin group took the lead in creating a "blockchain +" standard digital currency
standard digital currency refers to the process of assets identification, evaluation, right confirmation and insurance completed by a third party organization, which is written into the blockchain through careful digital algorithm to form the standard corresponding relationship between assets and digital currency, which is called standard digital currency
in order to realize the great leap forward development of blockchain finance, promote the new development of China's economy, accelerate the circulation of global assets, and realize the dream of rejuvenation that has been struggling for generations, Puyin group will hold the Guiyang strategic development ceremony of Puyin blockchain finance in Guizhou on December 9, 2016
the meeting will discuss the realization of digital circulation of assets by blockchain, the financial transaction mode of blockchain, and the application of blockchain services and social public instry. This conference will mark the beginning of the application of blockchain finance and the change and development of the new financial ecology
on June 1, 2020, Xinhua news agency was authorized to broadcast the "overall plan for the construction of Hainan free trade port" issued by the CPC Central Committee and the State Council, which will "actively participate in the formulation of international rules for cross-border data flow, and establish standards and rules for data rights confirmation, data trading, data security and blockchain finance" as one of the key tasks of Hainan free trade port before 2035
Blockchain is a term in the field of information technology. In essence, it is a shared database. The data or information stored in it is characterized by "unforgeability", "trace in the whole process", "traceability", "openness and transparency" and "collective maintenance". Based on these characteristics, blockchain technology has laid a solid "trust" foundation, created a reliable "cooperation" mechanism, and has broad application prospects
on January 10, 2019, the state Internet Information Office issued the regulations on the management of blockchain information services. In October 24, 2019, ring the eighteenth collective learning of the Central Political Bureau, general secretary Xi Jinping stressed that "block chain as an important breakthrough in core technology and independent innovation", "accelerating the development of block chain technology and instrial innovation". "Blockchain" has entered the public field of vision and become the focus of social attention
on December 2, 2019, the word was selected into the top ten catchwords of "biting words" in 2019
extended data:
Application of blockchain Finance:
since 2016, the major financial giants have also carried out blockchain innovation projects to explore the possibility of applying blockchain Technology in various financial scenarios. In particular, Puyin group took the lead in creating a "blockchain +" standard digital currency
standard digital currency refers to the process of assets identification, evaluation, right confirmation and insurance completed by a third party organization, which is written into the blockchain through careful digital algorithm to form the standard corresponding relationship between assets and digital currency, which is called standard digital currency
in order to realize the great leap forward development of blockchain finance, promote the new development of China's economy, accelerate the circulation of global assets, and realize the dream of rejuvenation that has been struggling for generations, Puyin group will hold the Guiyang strategic development ceremony of Puyin blockchain finance in Guizhou on December 9, 2016
the meeting will discuss the realization of digital circulation of assets by blockchain, the financial transaction mode of blockchain, and the application of blockchain services and social public instry. This conference will mark the beginning of the application of blockchain finance and the change and development of the new financial ecology
1. When Honran police rushed into Mariana Catalina Izaguirre's home one day in 2009 and wanted to expel her, she had lived in this shabby house for more than 30 years. Unlike her neighbor, Mariana Catalina Izaguirre even has a government housing certificate, but unfortunately, according to the information from the local government housing authority, the housing department and another person, the "homeowner", applied to the court for an expulsion order, and finally Ms. lzaguirre was forced to leave
this kind of wrangling is very common all over the world e to unclear registration or missing records. The lack of housing ownership protection is also the source of injustice. It has also become difficult to use houses or land as collateral for financing
bitcoin can make such problems disappear. Bitcoin is a "smart" currency based on encryption algorithm. We should pay more attention to the technology behind bitcoin: blockchain. It means more than money or cash. It creates a way of accounting to solve mutual distrust
that's why politicians consulted Factom, an American start-up that provides a prototype for land registration based on regional chains, to clean up Honran property institutions. Greece is also interested. It has no proper land registration policy. Only 7% of the land is right on the map
2. Blockchain and other similar "distributed account book" applications can be extended to prevent diamond theft and supermarket pipeline. NASDAQ Exchange will soon use blockchain system to record transactions of private enterprises. British banks dislike technological civilization, but it seems to be stimulated: in its research report last year, it wrote that distributed accounting is a great innovation and will have a profound impact on the financial instry
politicians think further: when partners and the left gathered in this year's ouishare Fest in Paris to discuss how grassroots enterprises have shaken big data companies such as Facebook, the regional chain appeared in every speech. In the dream of freedom in the world, more government regulations are replaced by private contracts between indivials - encryption algorithms will strengthen themselves
the blockchain was conceived by Satoshi Nakamoto, the amazing and so far the only confirmed founder of bitcoin - "completely equivalent electronic currency," he wrote in an article published in 2008. In order for it to be like money, bitcoin has to be transferred from the account it is fighting for, and can be consumed twice by the same person. In order to realize the dream of a decentralized system like Nakamoto, bitcoin must avoid any dependence on third parties, such as banks hidden behind ordinary payment systems
blockchain can replace the third party. It can hold the transaction history of each bitcoin and provide evidence of any person at any time. Distribution systems can be replicated in thousands of computers - the "nodes" of bitcoin - everywhere in the world, and can be made public. But even with such openness, it is still credible and safe. The complexity of the mathematical algorithm and the computational brute force cracking built in its "consensus mechanism" - the node agrees to upgrade the blockchain process according to the bitcoin circulation - ensure this
for example, Alice wants to pay Bob for rental services. They all have bitcoin wallets - software that goes directly to the blockchain, not to the web like a browser, but doesn't identify users in the system. When Alice's wallet began to apply, the transaction started, and the blockchain began to change to show that Alice's wallet was less and Bob's was more
the network needs to change through several stages in this process. When the application passes through multiple nodes in the network, check the ledger to confirm whether Alice has the bitcoin she wants to spend. If everything looks ok, the specific node will instruct miners to bundle Alice's request to connect with other similar reputable transactions, and create a new mole in the blockchain
this involves decomposing the mole into a series of data of specified length by encrypting a hash function (see chart). Like many encryptions, this hash is a one-way street. Data can be dispersed, but conversely, it is impossible to aggregate data from dispersion. But even though hash doesn't hold data, it's still unique. Changing the entry mole in any way - changing the transaction with a simple number - hashing will be different
3. Along with other data, hash will be placed in the first place (header) of the development mole. The first one then becomes the basis of practical mathematical puzzles, again involving hash functions. Puzzles can only be solved by tests and errors. Through the Internet, miners is experimenting with hundreds of millions of possibilities to find answers. When a miner finally finds out the answer, other nodes will quickly check (go one-way again: it's hard to solve, but it's easy to check), and each node will confirm the solution, and then upgrade to the blockchain. The first hash will be the confirmation line for the new mole, which is now part of the account book. Alice pays Bob and all other transactions in the mole are confirmed
in the decryption phase, three things are introced to greatly enhance the security of bitcoin. One is chance. You can't predict which miner will solve the puzzle, so you can't predict who will upgrade the blockchain at a given time, except that it must be the most diligent miner, not other random slackers. It makes cheating difficult
the second point is history. Each new first part contains the hash function of the first part of the previous mole, and it contains the hash function of the last part, so it goes back and forth to the starting point. This association makes the mole a circular chain. Starting with all the data in the account book, it's a small matter to regenerate the top of the latest mole. Despite making a change anywhere - even back to one of the earliest moles - the first changed mole will be different. This means the same for the next mole, and all the later moles. The account book will not pass through the latest mole identifier and will be rejected
is there a solution? Imagine Alice changing her mind to pay Bob and trying to rewrite history so that bitcoin will still be in her purse. If she is a capable miner, she can solve the urgent puzzle and make a new version of blockchain. But in the time she does, the rest of the network will have extended the original blockchain. Nodes will always work in the longest version of the blockchain. This rule prevented two miners from finding a solution at the same time and led to worse consequences in the chain than temporary forks. It also prevents cheating. In order for the system to accept her new version, Alice needs to extend it faster than anyone else. Not being able to control more than half of the computers - the technical term is "51% attack" - should not be possible
4, not to mention the possibility of subverting the above network, another deep-seated question is: why do you want to be a member of this network? The answer is the third "decryption" step, and there are rewards. Each new block has a new bitcoin, and the person who solves the puzzle will get 25 bitcoin rewards, about $7500
all the above ingenious designs are not the real attraction of bitcoin. Its value lies in instability and unpredictability, as shown in the figure below, but the total amount of bitcoin is fixed. The mechanism of blockchain also works well. According to a website called blockchain.info, on average, more than 120000 transactions are added to the blockchain every day, which means about $75 million in transactions. At present, there are 380000 blocks, and the size of this account book is nearly 45gb
most of the data in the blockchain is bitcoin, but it is not necessary. Mr Nakamoto has also created a distributed system and written a related explanation. Technology geeks call it: open platform. This platform imitates the Internet, including operating systems such as Android or windows. Developers can develop applications based on the basic functions of blockchain without anyone's permission. Chris Dixon of Andreessen Horowitz, which invests in bitcoin startups, said: this kind of network will eventually become a public database. It is understood that Andreessen Horowitz has invested in coinbase, a bitcoin wallet company, and 21, a bitcoin hardware equipment company for the public
at present, the application based on blockchain has three major fields. The first is to complete all suggestions through blockchain. Colo, a start-up company, is betting that in this model, they have developed an algorithm to "Polish" some small bitcoin transactions, so that they can represent such transactions as securities and precious metals
to protect the validity of land or house signature has become a typical application in the second category. Bitcoin transactions will add the signature to the account book of the blockchain. Everledger, a start-up company, protects luxury goods in this way. For example, they record the texture attribute of a gem in the blockchain data. If the gem is lost, it can provide the most intuitive proof. Onename stores personal information in a similar way; Note that this kind of application is not pure bitcoin transaction, so you need to give more trust first. For example, you need to tell the application developer some accurate information about yourself
the third kind of application has greater ambition, and "smart contract" can automatically detect whether there are various environments in which it can take effect. This is because bitcoin can be programmed so that it can be available or unavailable in special situations
lighthouse, founded by Mike Hearn, a well-known bitcoin engineer, is a decentralized crowdsourcing project. If enough money goes into the project, then everything starts. If the goal is not reached, it stops. Heran believes that his project can be cheaper and more independent than those of his friends who use bitcoin
5. According to Albert Wenger of USV, a New York venture capital company, the emergence of distributed ledgers has opened up an almost new quadrant of possibilities. This company has invested in a number of decentralized companies, such as openbazaar, which provides P2P transactions. In addition to cheering for the blockchain, some people question its security and scalability. Blockchain is very suitable for bitcoin, but in some niche applications, it can't support the use of millions of users
although Nakamoto's blockchain design has proved to be invincible so far, academic research also believes that it is almost impossible to do bad things on the blockchain without controlling 51% of the whole blockchain. In the past, bitcoin players were limited to a small circle. Today, bitcoin mining is controlled by various big bitcoin pools, where small miners share their efforts and get rewards
another concern is the environment. In order to get more bitcoin, the miners are more interested in computing power
Blockchain finance is actually the application of blockchain technology in the financial field
blockchain is an underlying technology based on bitcoin, and its essence is actually a decentralized trust mechanism. Through sharing in distributed nodes to maintain a sustainable database, the security and accuracy of information can be achieved. The application of this technology can solve the trust and security problems in the transaction, and the blockchain technology has become an optional direction for the future upgrading of the financial instry. Through the blockchain, both parties of the transaction can carry out economic activities without the help of the third-party credit intermediary, so as to rece the cost of the global transfer of assets
extended data:
since 2016, the major financial giants have also heard the news and launched blockchain innovation projects one after another to explore the possibility of applying blockchain technology in various financial scenarios. In particular, Puyin group took the lead in creating a "blockchain +" standard digital currency. Standard digital currency refers to the process of assets identification, evaluation, right confirmation and insurance completed by a third party organization. After careful digital algorithm, it is written into the blockchain to form the standard corresponding relationship between assets and digital currency, which is called standard digital currency
in order to realize the great leap forward development of blockchain finance, promote the new development of China's economy, accelerate the global asset circulation, and realize the dream of rejuvenation that has been struggling for generations, Puyin group will hold the Guiyang strategic development ceremony of Puyin blockchain finance in Guizhou on December 9, 2016, at which the discussion on the realization of digital circulation of assets, block chain financial transaction mode, and block chain financial transaction mode will be held It also discusses the application of blockchain service and social public instry
Fried coins or something
at present, the application of blockchain technology is virtual currency. Therefore, virtual currency is also known as the first real birth proct of blockchain. The popularity of virtual currency is also obvious to all, which has set off a frenzy of investment in many countries. According to foreign media reports, the number of virtual currency transactions in the United States has reached 5 million; South Korea is estimated to be the craziest nation in the world, with one in every 50 people speculating, and 31% of the working class buying and selling virtual currency; Venezuela has also issued the world's first virtual currency with the nature of national sovereignty - oil currency
with the popularity of virtual currency, market investors are not only satisfied with the conventional trading mode of buying low and selling high, but also actively seek more simple and convenient trading ways to obtain more profits. The virtual currency trend trading method was born and successfully captured the hearts of investors in a short time, becoming a major mainstream trading mode
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, the trend trading method of virtual currency is exclusively launched by speedxo, an international financial service provider with deep experience. It mainly deals with the currency pair composed of virtual currency and real currency, and it can make profits as long as it is bullish or bearish. For example, if an investor trades in "bitcoin / US dollar", he or she only needs to judge whether the price will rise or fall after 30 seconds, and buy up or down according to the trend. If he or she buys in the right direction after 30 seconds, he or she can get 93% of the net income of the investment amount. It is this kind of rise and fall are profitable, time-consuming, no need to take advantage of the market, the trend trading method quickly swept the entire currency circle