Why only bitcoin
unlike all currencies, bitcoin does not rely on a specific currency institution to issue. It is generated by a large number of calculations based on a specific algorithm. 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 currency circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity.
unlike all currencies, bitcoin does not rely on a specific currency institution to issue. It is generated by a large number of calculations based on a specific algorithm. 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 currency circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity
according to the notice on preventing the financing risk of token issuance, there is no approved digital currency trading platform in China. According to China's digital currency regulatory framework, investors have the freedom to participate in digital currency transactions at their own risk
warm tips: the above information is for reference only. Before investing, it is recommended that you first understand the risks existing in the project, and understand the investors, investment institutions, chain activity and other information of the project, rather than blindly investing or mistakenly entering the capital market. Investment is risky, so we should be cautious when entering the market
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How many cryptocurrencies are there in the world
at present, there are more than 1350 encrypted virtual currencies in circulation in the world. So far, according to the total valuation given by the market price, there are 23 virtual currencies with a valuation of more than US $1 billion, 97 with a value of more than US $100 million, and 573 with a market value of more than US $1 million. All in all, the total market value of virtual currency has exceeded US $5 trillion, of which bitcoin, the earliest invention, accounts for more than half. Players generally admit that bitcoin is not the most effective cryptocurrency, nor is it the most covert and anonymous. However, bitcoin is the first one to appear, so it is the most well-known and popular one
so the question is, does the world need more than 1350 cryptocurrencies
even the players of virtual currency will doubt this. No matter how strange the world is, there cannot be so many virtual currencies. In fact, there are so many new ICO virtual currencies emerging in recent years, which complement the "Crazy" performance of bitcoin in this year. Most of these 1300 kinds of virtual currencies can't be recognized by everyone. From the beginning of ICO, there will be many loopholes that no one will fill. When there is a major adjustment in the virtual currency market, many of them will disappear automatically, which means that no one will go to mine any more
this also leads to a problem. When some of the cryptocurrencies have problems, the entire instry chain and market of virtual currency may be involved like dominoes. Even the strongest bitcoin now will also be involved, because the cryptocurrency, in the final analysis, is supported by the "belief" of players
why is bitcoin worth more than other cryptocurrencies
at the time of writing this article, the total value of bitcoin is about US $270 billion, the total value of cash of bitcoin is about US $31.7 billion, and the market value of bitcoin gold is US $5.17 billion. Since bitcoin cash and bitcoin gold are separated from bitcoin, in a broad sense, they should be counted as a part of the total value of bitcoin (of course, you can't refute me technically, just for a rough explanation). Once we add up all the branches of bitcoin, we can calculate the market value of more than $310 billion. As a result, bitcoin accounts for about 60% of all cryptocurrencies in the market
as I have repeatedly said in recent days, bitcoin is not the most effective cryptocurrency, the most advanced, the most anonymous, or even the most stable cryptocurrency. So why is bitcoin so valuable compared with other virtual currencies
it's very simple, because bitcoin has a catalytic factor, that is, the Chicago Board of trade, as well as the commodity exchange, began to trade futures as a "commodity". Then, you will naturally think that since it has been recognized by the futures exchange, will it be further recognized by the US government in the next step. Other virtual currencies are still struggling
however, we have always stressed that since the day bitcoin was traded as a "commodity", its real monetary role, like gold, has been very weak in reality, but as one of the procts of gambling. This means that we all do bitcoin as a speculative activity, rather than a real use
judging from the current situation, bitcoin is no longer the only virtual currency that soars as soon as there is news of "official support". It is like iota, a virtual currency that focuses on the principle of the Internet of things. The news of cooperation with Microsoft came in the last two weeks, and it immediately rose to more than $300. Later, Microsoft came out and said that there was no such thing, and iota immediately fell back. It can be seen that in the future, as long as the virtual currency is recognized by some big company or organization, it will soar like bitcoin
1. Complete decentralization, without issuing institutions, it is impossible to manipulate the number of issues. Its distribution and circulation are realized through open-source P2P algorithm
2. Anonymity, tax exemption and supervision free
3. Robustness. Bitcoin is completely dependent on P2P network and has no distribution center, so it cannot be shut down externally. Bitcoin price may fluctuate and collapse, and many governments may declare it illegal, but bitcoin and its huge P2P network will not disappear
4. Borderless and cross-border. Cross border remittance will go through layers of exchange control agencies, and the transaction records will be recorded by many parties. But if you trade with bitcoin, enter the digital address directly, click the mouse and wait for the P2P network to confirm the transaction, a lot of money will pass. It does not go through any regulatory agencies and will not leave any cross-border transaction records
5. It is difficult for the cat to survive. Because bitcoin algorithm is completely open source, anyone can download the source code, modify some parameters, recompile, and create a new P2P currency. But these counterfeit currencies are fragile and vulnerable to 51% attacks. Any indivial or organization, as long as it controls 51% of the computing power of a P2P currency network, can manipulate transactions and currency value at will, which will be a devastating blow to P2P currency. Many Shanzhai coins die in this link. The bitcoin network is robust enough. If you want to control 51% of the computing power of the bitcoin network, the number of CPUs / GPUs required will be astronomical.
secondly, however, there is a smaller threshold for the total number of "smart": the largest possible integer that can be represented in floating-point format. Integers are not the only numbers that computers can store; To deal with decimals, computers & gt; Use a format for floating point representation. Floating point notation is essentially a binary version of scientific notation. For example, here is a value you will encounter when you study physics:
mass of the earth: 5.972 1024 kg
mass of the sun: 1.989 1030 kg
speed of light: 2.998 108 M / s
light year: 9.460 1015 m
mass of proton: 1.672 10-27 kg
Planck length: 1.616 10-35 m
we can notice that, How does scientific notation allow you to represent all of these values with reasonable accuracy, even though they vary greatly in size. Floating point notation is essentially a binary scientific notation; When you store numbers & gt; When the word is 9.625, what your computer stores is "1.001101
* 1011" (in other words, it stores 0100000000100011
& gt; This is the same thing with high-precision sequence form). In this high-precision form, the coefficient (that is, the part that is not the exponent) has 52 bits. This means high precision (more refined & gt; Double precision floating point number is enough to store up to 253 numbers, but it can't be any higher. If it exceeds 253, you have to start cutting off the numbers at the end. Bitcoin's 250.9, the total number of "smart" in the form of index, is just & gt; OK, below this maximum
if we have integers, why should we care about floating-point values? Because more high-level programming languages (such as JavaScript) do not open low-level "floating point" and "integer representation", but only provide "number" representation for programmers; Concepts
– of course, in floating-point form. If Nakamoto chose 210 million instead of 21 million at that time, bitcoin programming in many languages would be much more troublesome than it is now
note that Stefan Thomas unfortunately didn't notice this in time when he wrote bitcoinjs, so that the library used a special "big number big
number" object instead of an ordinary number to store the tutorial output value; My own bifurcated bitcoin JS (along with other improvements) uses ordinary numbers.
Bitcoin was born on January 3, 2009, which has a history of 10 years. The value of bitcoin has soared from zero to US $19850, the highest point in 2017. And most people have been concerned about cryptocurrency and bitcoin since then. Before that, most people would think that bitcoin was just an "internet currency", similar to q-coin
bitcoin is the leading cryptocurrency, which has been the absolute consensus in this instry. Looking back over the past few years, among the top ten cryptocurrencies in terms of market value, only bitcoin has always been the first, and the remaining counterfeit currencies are all in the past
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. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner