Ethereum of a large family
Ethereum is an open source public blockchain platform with smart contract function. It provides decentralized virtual machine (Ethereum virtual machine) to process point-to-point contract through its special cryptocurrency ether (also known as "Ethereum")
The token on theblockchain is called ether, and the code is eth. It can be traded in many foreign exchange markets of cryptocurrency, and it is also the medium used to pay transaction fees and computing services on Ethereum
the concept of Ethereum was first proposed by vitalik buterin, a programmer, from 2013 to 2014, inspired by bitcoin, with the general meaning of "next generation cryptocurrency and decentralized application platform", and began to develop through ICO crowdfunding in 2014. As of February 2018, Ethernet is the second highest cryptocurrency in market value, second only to bitcoin
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Ethereum platform has no characteristics and value. Like programming languages, it's up to entrepreneurs and developers to decide what to use. However, it is clear that some application types benefit more from the functions of Ethereum than others. Ethereum is especially suitable for those applications that automatically interact directly between points or promote group coordination activities across networks
for example, coordinate the application of point-to-point market, or the automation of complex financial contracts. Bitcoin enables indivials to exchange money without the help of financial institutions, banks or governments. The impact of Ethereum may be more profound
in theory, any complex financial activities or transactions can be automatically and reliably carried out on Ethereum with coding. In addition to financial applications, any application scenario with high requirements for trust, security and persistence, such as asset registration, voting, management and Internet of things, will be affected by Ethereum platform on a large scale
many new users believe that the sole purpose of mining is to generate ether in a way that does not require a central issuer (see our guide "what is ether?"). It's true. The token of Ethereum is proced in the process of mining, with a mining rate of 5 Ethereum coins per piece. But mining is at least as important. Usually, banks are responsible for keeping accurate records of transactions. They make sure that money is not created out of thin air and that users don't cheat and spend money many times. However, blockchain introces a new way to keep records, the whole network instead of intermediary, to verify transactions and add them to the public ledger
Ethereum mining
although "no trust" or "trust minimization" monetary system is the goal, there are still people who need to ensure the security of financial records and ensure that no one cheats. Mining is one of the innovations that makes decentralized records possible. Miners have reached a consensus on the history of transactions in terms of preventing fraud (especially double spending on ether) - an interesting issue that hasn't been addressed before the decentralized currency works on the blockchain. While Ethereum is looking at other ways to reach a consensus on the effectiveness of the deal, mining currently keeps the platform together
how mining works
today, the mining process of Ethereum is almost the same as that of bitcoin. For each transaction, the miner can use the computer to guess the answer repeatedly and quickly until one of them wins. More specifically, the miner will run the unique header metadata (including time stamp and software version) of the block through the hash function (which will return a fixed length, unordered string of numbers and letters, which appears to be random), changing only the 'nonce value', which will affect the hash value of the result
if the miner finds a hash that matches the current target, the miner will be granted ether and broadcast the block across the network for each node to verify and add to their own ledger . If miner B finds the hash, miner a stops working on the current block and repeats the process for the next block. It's hard for miners to cheat in this game. There is no way to fake the work and come up with the right answer to the puzzle. That's why solving puzzles is called "proof of work."
on the other hand, others have little time to verify whether the hash value is correct, which is exactly what each node does. About every 12-15 seconds, a miner finds a stone. If the miner starts to solve the puzzle faster or slower than this, the algorithm will automatically re adjust the difficulty of the problem so that the miner can rebound to about 12 seconds of solution time
miners earn these ethers randomly, and their profitability depends on their luck and the computing power they put in. The specific workload verification algorithm used by Ethereum is called "ethash", which aims to require more memory, making it difficult to mine with expensive ASIC. Special mining chips are now the only profitable way to mine bitcoin
in a sense, ethash may have achieved this goal successfully, because dedicated ASIC is not available for Ethereum (at least not yet). In addition, as Ethereum aims to shift from proof of work mining to "proof of equity" (which we will discuss below), buying ASIC may not be a wise choice because it may not prove useful for a long time< However, Ethereum may never need miners. Developers plan to abandon proof of work, the algorithm currently used by the network to determine which transactions are valid and protect them from tampering to support proof of equity, which is guaranteed by token owners. If and when the algorithm is launched, proof of equity can become a means to achieve distributed consensus, and the consensus uses less resources.
game companies can control the economy in the game by controlling the generation of game currency (the rate of losing treasure). So, are game companies really omnipotent? The answer is No. what do game companies fear most
it is the offline transaction of players. After the players meet, they trade in RMB. I will give you money and you will give me the best equipment. In this way, they can directly skip the monitoring of the game company and affect the economic balance of the whole game
this is the reason why many online games prohibit players from trading offline, and even the game props can't be given away at all, because they are afraid that RMB trading will damage the economic system in the game
when playing the game, all players understand that the money, gold coins, diamonds, gemstones and so on in the game are essentially fake money. What is real money? It's RMB
you can only use RMB to exchange the currency in the game. The currency in the game can never be converted into RMB
you only need to understand this logic, and then replace the game company with the government
you can easily understand the essence of bitcoin. Whether it's US dollar, pound sterling or RMB, it's all issued by governments, and the government is equivalent to a game company
as long as you survive in this country, all your transactions should be completed through legal tender. However, the emergence of bitcoin is equivalent to "player offline trading". You can bypass the government and freely switch property among various countries. In the logic of bitcoin, US dollar, pound sterling and RMB become fake currencies, while bitcoin becomes real currency
the reason why bitcoin can become a real currency is that it is non renewable. There are only 21 million bitcoins, which will disappear after digging. Bitcoin, like gold, is non renewable. Whether you believe it or not, at least its logic is self consistent
but the currencies of different countries are different. As long as the government feels that it is short of money and turns on the banknote printing machine, it will be able to run full power for printing
this leads to inflation. I don't need to say anything about inflation. Comparing prices 20 years ago, 10 years ago and today, I believe everyone has his own understanding of inflation. In China, it is self-evident how much house prices have soared in the past two decades
many people buy a house not because they don't have a house to live in, but to fight against inflation. Ten thousand yuan to buy financial procts, ten years later, it will become twenty thousand yuan; Ten thousand to buy a house of one square meter, ten years later, it will become 100000 yuan
"house" was essentially "real currency" and "hard currency" before the emergence of bitcoin. The rich buy a lot of real estate to fight against inflation, but the house also has its disadvantages: first, if you really commit a crime,
the house can't be taken in your pocket, and the government should check and seal it, so there are still many risks; Second, a large number of houses are often difficult to sell, and the transaction takes a long period of time; Third, even if the house is sold, a lot of cash can not be transferred overseas. The emergence of bitcoin just perfectly solves these problems
bitcoin is installed in the hard disk. As long as you remember the password, there will be no one to check where you get it, and someone can't seal it (unless you rob your hard disk). Any fixed assets, cash need time cycle, bitcoin do not use, this second order, the next second cash to the account. Transfer assets overseas
is that true? Bitcoin was designed to bypass the monitoring of the national government and transfer assets perfectly and efficiently. Why do most ordinary people think bitcoin is useless, or even can't think of any use? Very simply,
poverty limits our imagination. As a small white-collar who works hard and earns money all his life, what assets need to be transferred? Estate tax? What's more, it's ridiculous. When people die, they just kick their legs. They never think about the need to avoid taxes on inheritance, but it's different for the rich
suppose that the inheritance tax of a certain country is 50%. Once the rich man dies, his son can only get half of his assets. However, if the rich man changes all his assets into bitcoin and gives his son the password hard disk, he will perfectly inherit it, and the government will not be able to collect any tax
(of course, this is only an ideal situation. In fact, it may not be perfect for tax avoidance, but it is still very enlightening). In addition, for law-abiding citizens, there is no risk of bankruptcy and home hunting
but for some of the top rich, they may not care about the amount of assets, but they are very concerned about the safety of assets. It's acceptable for a rich man with a fortune of 1 billion to lose 500 million in business. But what if he was robbed of his family for some inconvenient reasons? He can't accept direct bankruptcy
at this time, if he holds bitcoin, he will never be bankrupt, and no one can his bitcoin. At least we can leave some capital to make a comeback, or leave a way for future generations“ "Asset security" is what the top rich care about most, not more money but less security. To say that bitcoin can fight inflation caused by the government's printing money indiscriminately is just a good cover at this stage
only those in real need can know the real value of bitcoin and figure out its essence The ancients said: Chunjiang water warm ck prophet) this is also the most perfect function of bitcoin, which is recognized by a group of rich and anxious rich people all over the world, who are no longer willing to be controlled by the government,
or have their own blemishes in all aspects. They have reached a consensus by using bitcoin to maintain the security of their own assets by holding bitcoin together
therefore, bitcoin was not designed for the poor at first. When all living beings can understand the purpose of bitcoin, the price will not be affordable to the poor
some common mistakes about bitcoin: Q: isn't bitcoin really a Ponzi scheme? A: bitcoin is not a Ponzi scheme. Ponzi scheme needs to use the money of later generations to supplement the investors in front, and it is in the shape of a pyramid
bitcoin can be bought and sold freely, with ups and downs. If you don't buy or sell bitcoin, you can maintain the original price, which is similar to stocks. A stock can drop 90%, or even drop to delisting, can you simply say that the stock is a fraud
Q: does it make sense that bitcoin consumes a lot of power? A: it takes a lot of manpower and material resources to dig gold. What's the significance of digging gold? The power consumption of bitcoin is the same as the essence of gold mining, which expresses the recognition of its monetary attribute and its value. Q: bitcoin has no government recognition, so it has no value
also has no monetary attribute. A: the original intention of bitcoin is to fight against the government. It doesn't care whether it is recognized by the government or not. In addition, if the government breaks its promise, the currency will also be a piece of waste paper, not to mention Zimbabwe's 100 billion banknotes, and Venezuela's currency devaluation,
in terms of the bad inflation of legal currency before the liberation of our country, it was only 60 years ago. Q: what is the difference between bitcoin and tulip bubble? A: tulips are not non renewable. If they are planted, they will grow. If they are planted more, they will depreciate. There is no way to store them for a long time and cash them in time
similar foam and walnut walnut, all kinds of high-grade wood, strange stones, Tibetan mastiff... These are a way, is a bubble. There are only 21 million bitcoins, which will only be less and less
Q: the principle of bitcoin is very simple and easy to . Will it still have value? A: the principle of religion is also very simple from the perspective of modern people<
but apart from the several religions in Jerusalem, which are regarded as orthodox, what other religions have world-class influence? In fact, it's not many. You can count three to five
will modern people recognize the creation of a religion? Orthodoxy matters. It takes a long time and energy to cultivate the market
bitcoin is orthodox, authentic, the loudest and brightest brand, and the rest are niche. Q: do you think bitcoin is absolutely safe? Will hackers one day blackout bitcoin all over the world
A: This is a question of raising bar. At least for now, bitcoin is logically self consistent
you have to say that someone has broken the bitcoin system. It's like asking, "what if the aliens invade the earth tomorrow?", This possibility also exists, no one can deny, but this assumption is meaningless
Q: will there be a behind the scenes and a big dealer in bitcoin? When it rises to a certain height, it will throw everyone away
A: it may exist, but I think the probability is similar to the probability that Freemasons manipulate the world. This article is not bitcoin soft text, I did not buy bitcoin, just a simple chat about my understanding of bitcoin
I didn't buy bitcoin, and I won't recommend it to anyone
bitcoin has a great risk. The hard disk may be damaged by material resources, may be lost, and may forget the password. This risk is really great
with bitcoin jumping up and down, ordinary people may not be able to stand this fluctuation. If you want to buy it, it is suggested to look at it in a cycle of one year, three years, five years or even ten years. We should have the height and attitude of "not afraid of clouds covering our eyes", otherwise don't touch it
the stable currency usdt is a token issued by tether company based on the stable value currency USD. Tether company strictly abides by the 1:1 reserve guarantee, that is, every usdt token issued, its bank account will have a capital guarantee of USD, and users can exchange USD and TEDA at any time
1usdt = US $1, users can query funds on the tether platform to ensure transparency
use of usdt? Usdt can be said to be the intermediary carrier between digital currency and US dollar legal currency. Why do you say that? For novices, everyone is confused when they first enter the market,
buy usdt with legal currency, and then buy BTC, ETH or other currencies with usdt after a series of observation. Does this process seem familiar? There are also many contract exchanges that use usdt as contract margin
more stable currency to mainstream currency contract trading pairs appear in the options section of big exchanges. As a stable currency, its "stable" nature is reflected in the price and the consensus value it brings to us
of course, there is a price difference between inside and outside the court, let alone digital currency. So in addition to trading different digital currencies, you can also move bricks arbitrage! Brick arbitrage refers to the same commodity in different markets, there will always be different prices
as digital currency is a global asset, it is impossible for many exchanges and OTC trading platforms to have the same price at the same time
the price gap here is very small
the ranking of digital currency can be measured according to multiple dimensions, such as market value, technical ability, landing in Cheng, 24-hour rise and fall, 24-hour turnover list, 24-hour turnover rate, etc. For the sake of data accuracy, we list the ranking of virtual currencies in the market value list<
let's first look at the data to see how the Ministry of instry and information technology measures the value of digital currency:
saidI Research Institute of the Ministry of instry and information technology officially announced the first global public chain technology evaluation index and ranking. Eth ranked first with a total index of 129.4, while BTC only ranked 13th<
moreover, the ranking method this time is that CCID Research Institute of MIIT does not mention cryptocurrency, but only public chain. The first list of evaluation objects are: bitcoin, Ethereum, reborn, Leyte, bitcoin cash, Cardano, starcoin, Neo, eota, Monroe, dasey, Xinjing, Ethereum classic, quantum chain, Nanor, application chain Big zero coin, verge, stratis, cloud storage coin, stim coin, bitstock, byte coin, wave coin, deced, super cash hcash, Comodo coin, ark. The top ten in the list are eth, stem, LSK, Neo, KMD, XLM, ADA, iota, XmR and strat<
If ranked by market value, the results will be much different: the following data are based on Niuniu app, and the market value represents the first place at the time of writing: bitcoin (BTC)
current price: 26428 yuan, market value: 460.018 billion yuan, total amount of CDB: 21 million, circulation volume: 17.406 million, and circulation market value: 460.207 billion yuan, Issue time: 2009.01.03
second place: XRP
current price: 236 yuan, market value: 95.192 billion yuan, total issue volume: 100 billion yuan, circulation volume: 40.327 billion yuan, circulation market value: 95.181 billion yuan, issue time: 2011.04.18
third place: eth
current price: 734 yuan, market value: 76.136 billion yuan, total issue volume: 104 million yuan, Circulation volume: 104 million, circulation market value: 76.136 billion, issue time: July 24, 2014
fourth place: Star currency (XLM)
current price: 98 yuan, market value: 18.834 billion, total issue: 104.523 billion, circulation volume: 19.155 billion. Circulation market value: 188.43 yuan. Issue time: 2014.08.01
fifth place: bitcoin (BCH)
market value: RMB 137.700 billion, currency price: RMB 810.175, total currency: RMB 21 million, bitcoin cash released on August 1, 2017, jointly created by some bitcoin developers, belongs to the new version of bitcoin. From 2015 to 2017, the price of bitcoin rose rapidly. Different factions competed fiercely for more computer network resources. In order to get out of the competitive environment, one camp created another version and rebuilt the blockchain currency. Bitcoin cash modifies the code of bitcoin, increases the block size to 8m, adopts two-layer network, reces the workload of bitcoin network, and maximizes the efficiency of bitcoin network without damaging the original structure and security of bitcoin blockchain
with the integration of the two exchanges of okex and Huo yuan.com, yuanniuniu can share the trading depth and enjoy the treatment of zero handling charge fund transfer. It only needs to download an app to exchange transactions at both ends. At the same time, yuanniuniu is also a good market software tool, which can help speculators master the latest currency price trends and large positions.
Hello, the price of China Telecom 5g member upgrade package is 29 yuan per month. The package contains 10g domestic traffic, which can be shared by the main and secondary cards. It also provides free membership benefits. The address is: webpage link
answer is for reference only. Due to the irregular changes of telecom business and policies, Therefore, the specific package or policy is subject to the release of Telecom online business hall or telecom handheld business hall
Hello, my friend. These two insurance companies are among the best in China. They can be said to dominate the domestic insurance instry
then it's really difficult for these two giants to be divided into different levels. If we just look at the scale, China Life Insurance ranks first. After all, it's a state-owned enterprise, followed by Ping An. Here is a ranking table with complete data. You can learn about it: "the national ranking of insurance companies in 2020 is fresh!" First, Ping An insurance company was founded in 2002 and is a subsidiary of Ping An insurance (Group). According to authoritative data, the registered capital of Ping An Life has reached 33.8 billion yuan by the end of 2017
there are 42 branches and more than 3200 business outlets in China, with more than 1.3 million life insurance agents. In addition, Ping An insurance company ranks fourth in the fortune China top 500 in 2019, and only the instry giant China life insurance company ranks 11th
the stronger the solvency, the less need to worry about the inability to pay. Generally speaking, the CIRC has two important evaluation criteria for the solvency evaluation of insurance companies, in which the core solvency adequacy ratio should be more than 50%, and at the same time, the comprehensive solvency adequacy ratio should be more than 100%
The data of Ping An insurance is shown in the figure below:
we can see that the core solvency adequacy ratio of China Life Insurance is 272.15%, the comprehensive solvency adequacy ratio is 281.57%, and the comprehensive risk rating in the third quarter of 2019 is class A
generally speaking, China's life insurance is relatively reliable
< H2 > dad's summary:whether it's China life insurance or Ping An insurance, the most important thing for us to buy insurance procts is whether the procts are suitable for us or not. We can't take the two companies as the first choice because of their large scale
source: Nanpa Bao
