FDC bitcoin
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
As for this question, I suggest you go to lobby the community to have a look (web link), where there are big guys and big V to answer for you. Here I share with you an article by Mr. Ruan Yifeng, which should be able to answer your questions
I. what is the essence of blockchain? In a word, it is a special distributed database
the current rule is that new nodes always use the longest blockchain. If there is a fork in the blockchain, we will see which branch is behind the fork point and reach six new blocks first (called & quot; Six confirmations. According to the calculation of a block in 10 minutes, it can be confirmed in one hour
since the generation speed of new blocks is determined by computing power, this rule means that the branch with most computing power is the authentic blockchain
9. As an unmanaged distributed database, blockchain has been running for 8 years since 2009, and there is no big problem. This proves that it is feasible However, in order to ensure the reliability of data, blockchain has its own costs. One is efficiency. When data is written to the blockchain, it takes at least ten minutes. If all nodes synchronize data, it takes more time; The second is energy consumption. The generation of blocks requires countless meaningless calculations by miners, which is very energy consumingtherefore, the application scenarios of blockchain are very limited
there is no management authority trusted by all members
the data written by
does not require real-time use of
the benefits of mining can make up for its own costs
if the above conditions cannot be met, then the traditional database is a better solution
at present, the biggest application scenario (and possibly the only one) of blockchain is cryptocurrency represented by bitcoin
BTC 2009 Satoshi Nakamoto is bitcoin / org ~ $24.3 billion is SHA-256; LTC 2011 coblee is litecoin / org ~ $3.6 billion is script infinite; IFC 2012 ifccion is ifccoin / org ~ $20 million is script quark qrk 2012 qrkcion is cgbcion / org ~ US $10 million is scrpt zeta coin, 2012 zetcony is ZET / org ~ US $10 million is scrpt proof of work / POS how to distinguish black heart coin. So how to distinguish these black heart coins
with the popularity of Shanzhai coin market, some unscrupulous developers, after developing a virtual coin, organize themselves to take a part of the total amount of virtual coin issued as their own before putting it on the market. This proportion is generally less than 2%, and a few even reach 90%. When the virtual currency has a certain value or on the trading platform, a large number of sell-off cash, so that miners and investors suffer huge losses, so the first factor to choose virtual currency is zero pre dig. So how to distinguish whether a virtual coin is zero pre dig? Here is the identification method. 1. Play the wallet and wait for the wallet to complete synchronization. Open the wallet - "help" - "debug window" - "console" 2. Input the command: getblockhash block. For example, input: getblockhash 1 to get the hash value of the first block. Input the command: getblock just got the hash value. We input: getblock to find the value of TX, Here we are: we enter: getrawtransaction 1 (the space 1 above and behind should not be omitted) 5. In the information, the value value is the content of this block: 8.00000000, which is the currency quantity of the first block. This query method is common to all virtual currencies
e to the irreversibility of virtual coins, unscrupulous developers need to pre dig a large number of virtual coins as soon as possible. They have to set a large number of 1-N early blocks to implement pre digging. This is a dilemma. The author who has no pre dig has no motivation to maintain it. There is a risk that the author will cash out and smash the market maliciously if there are too many pre digs. Generally speaking, the author will use part of the pre digs for promotion and maintenance, but the pre digs generally do not exceed 2%. But in practice, many authors have done a lot of pre excavation
1. For example, Wolong, the author of Panda Coin (transaction code: PND), had a serious pre excavation. When he went public, the author smashed 18e coin directly into the market, from 200 Cong bitcoin to the price of Jicong bitcoin. At the same time, the domestic promotion QQ group was disbanded, a large number of investors were deeply locked, resulting in a very bad impact
2. For those who are lucky in disguise, e to the failure of the author's pre dig, such as moleculars (transaction code: mol), the author stole about 10 million (total 2e) after the release of the coin. At that time, it caused a big stir in the foreign Shanzhai coin forum. Some Shanzhai coin lovers directly used big computing power (51% computing power attack) to cause the currency to split, After the restart of the block, all the pre g coins were lost, resulting in that the total amount of the coin is only 1.9e, because the zero pre g coin caused by the accident aroused the interest of the majority of coin friends, and the computing power of the whole network once exceeded 200g. At present, the author's maintenance power comes from the donation and reward of fans at home and abroad, and the author's enthusiasm for coin friends is unexpected
therefore, instead of worrying about pre excavation and no pre excavation, we should pay more attention to the amount of pre excavation and the purpose of pre excavated coins. It is recommended that you do not play with more than 2% of the pre g coins. The so-called POW refers to the proof of work, that is, the proof of work. In short, it is to get rewards through calculation, and it can be calculated by mining machine or computer CPU, GPU, etc., that is the so-called mining. Investors can get it by buying it from home or digging their own mines. Relatively fair, early investors can not monopolize the quantity and price of currency. Representative currency: bitcoin, etc
the so-called POS refers to the proof of stock. In this way, currency investors can only buy from the previous home, which is similar to the pyramid style. The distribution is extremely unfair. Many currency investors get a lot of currency at the initial stage, and later can only get it from the initial investors at a high price, which leads to the monopoly of the initial investors on the currency price. Representative currency: NXT, etc
the so-called IPO is more similar to crowdfunding in the field of Shanzhai currency, that is, the author or company initiates the investment target, and domestic and foreign investors invest and obtain a certain amount of currency or options. This kind of representative currency: PTS, etc. However, e to 3I company, PTS has been delayed again and again, which has a great impact on investors' confidence
magnet:? xt= urn:btih To create a new task in thunderbolt. Will automatically download the seeds, there may be errors, because Xunlei will seal some resources, so you can network magnetic chain conversion seeds, network such website tools, the magnetic chain into seeds