区块链交易行情每天涨多少停牌交易,区块链1天交易时间
区块链交易行情每天涨多少停牌交易，是一个投资者关心的问题，也是区块链投资的重要参考指标。今天，我们就来聊聊如何拓展区块链1天交易时间的三个关键词：
1. 区块链投资
区块链投资是指投资者投资区块链技术应用产品，包括投资区块链技术自身，以及投资区块链技术应用的各种产品，如加密货币、智能合约、去中心化应用等。区块链投资的特点是高风险、高收益，投资者需要对市场有较深的了解，要掌握投资的技巧，并且要有足够的资金准备。
2. 区块链交易
区块链交易是指在区块链网络上进行的交易，它比传统的金融交易更快捷、更安全、更便捷。它可以让投资者参与到全球范围内的区块链交易中，并且可以根据自己的需求和投资风格，选择不同的交易手段，如交易所、OTC、去中心化交易所等。
3. 区块链市场行情
区块链市场行情是指区块链市场上的价格变动情况，它可以反映出当前市场的供求关系，以及投资者对市场的看法。从行情中，投资者可以获得更多的信息，例如市场发展趋势、市场交易量、市场价格等，从而及时调整投资策略，获得更好的投资回报。
以上就是关于区块链交易行情每天涨多少停牌交易，以及如何拓展区块链1天交易时间的三个关键词的介绍，希望能够帮助到大家，大家在投资区块链时，可以多多参考这些投资经验，获得更好的投资回报。
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Ⅰ What should you pay attention to when investing in blockchain
1. Most people don’t know what blockchain is
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Compared with traditional stocks, real estate, bonds, gold, etc., blockchain assets are a very abstract and virtual asset form. Blockchain assets represented by Bitcoin are very professional. This kind of computer language and program operation method is neither endorsed by the credit of any country nor granted by any company with securitization benefits. It completely relies on the mutual consensus and trust between strangers. In this case, although decentralization is completed The operation logic of the technology is standardized, but its experiments are still in its infancy and development stage. Participating in related investments is actually a brave risk-taking behavior.
2. Blockchain asset prices fluctuate violently
Since there is not much support from the physical application level, many blockchain projects completely rely on community operations and market speculation, and investors are very worried. It is difficult to hold blockchain assets from the perspective of value investment, which leads to very frequent flows of funds, and price fluctuations have become a norm. A blockchain-related token can skyrocket by 500% in a day, or fall by 90% in a few hours. Such violent price fluctuations are not something ordinary investors can bear.
3. There is too much uncertainty in the policies of various countries
As an underlying technology, the world has basically accepted the value of blockchain, but as a "blockchain" "Companion product" digital currency is still very controversial in various countries' policies, and as the volume of digital currency transactions continues to increase, its impact on the global financial market is also increasing day by day. At present, the daily trading volume of the entire digital currency field exceeds 60 billion US dollars, which is comparable to the trading volume of China's Shanghai and Shenzhen Stock Exchanges, and can also match the average daily trading volume of the New York Stock Exchange. It is impossible to continue to operate outside supervision. Yes, there will be a very large regulatory game cycle. Policies in this area may be introduced one after another by various countries, and the impact on the market cannot be ignored.
4. Various blockchain projects are mixed in quality
Blockchain technology is originally a very basic architecture technology. Currently, due to its popularity at the financial level around the world, many of its own Project parties that have nothing to do with blockchain began to use blockchain concepts to design products, and were able to complete the writing of blockchain white papers in a very short period of time, and then raised market funds. In this case, the overall technical threshold of the blockchain has been lowered. Many companies that have no strength and willingness to develop blockchain have developed the concept of blockchain purely to obtain financial support, resulting in the proliferation of projects, projects and The gap between projects is getting wider and wider, but it is difficult for ordinary investors to distinguish and it is easy to fall into the trap.
5. Coin speculation does not equal blockchain investment
Currently there are many opinions that blockchain and digital currency are an integral whole, and you cannot develop blockchain at the same time. Technology, on the other hand, suppresses digital currency. I quite agree with this logic.Yes, but currency speculation is indeed not the same as blockchain investment in the true sense. Things with real investment value must be things with scarce supply. If you can just issue a digital currency, it can represent the application value of the blockchain and bring certain innovations to society. Then you can just find a company that can issue digital currency. The blockchain technology team can issue dozens of digital currencies in a very short period of time, just by changing their names. Therefore, digital currency itself does not have much logical relationship with blockchain assets. Blockchain projects must be a market with very obvious scarcity, but digital currencies do not have great scarcity. This is like saying that any Internet company can develop a chat software similar to WeChat, but the chat software itself does not have much value. The real value lies in how much public participation the chat software attracts. Digital currency is just a chat software. The current situation is that everyone is speculating on this software, but few people care about what is on the software, and the bubble is obvious.
6. Short-term overheating, easy to be exploited by criminals
The particularity of the blockchain industry is that many of its ecologies have become very financial. , funds will be very concentrated, and most links are related to funds. From raising funds through ICO, to sending tokens to investors, to online trading on exchanges, and users buying and selling tokens on exchanges, the entire process is almost entirely a financial link. If practitioners are not professional enough and have no self-discipline, , lack of supervision, then every link may be used by criminals to manipulate the market and obtain various illegal gains.
7. Governments of various countries have their own agendas in responding to the development of blockchain
In order to catch up with the next round of financial technology and digital revolution, Japan has a very open attitude towards transactions such as Bitcoin. Attitude, digital currency transactions denominated in Japanese yen account for half of the world’s entire fiat currency trading area. Japan hopes to use digital currency to revive Japan’s financial competitiveness. The United States hopes to use mainstream financial markets, such as the futures and options derivatives market, to tame Bitcoin and make it another powerful tool for US dollar hegemony. China is also working hard to promote a sovereign encrypted digital currency, and one of its important purposes is to promote the internationalization of the renminbi. The field of digital currency and blockchain assets may become the next point of competition and competition among great powers, which will invisibly increase systemic risks for investors. It is difficult for you to know that behind this kind of great power rivalry, another one suddenly appears. What unexpected policies will have an impact on the entire market?
8. The threat of quantum computers
Blockchain generates a self-motivating system to ensure that it can operate on its own under decentralized conditions. Most applications It is asymmetric encryption that uses the corresponding public key to verify transactions signed by the private key to ensure that blockchain assets such as Bitcoin can only be used by the legitimate owner. However, quantum computers can solve the problem of asymmetric encryption. Quantum computers can calculate the private key from the public key in a few minutes.Knowing all the private keys, people with quantum computers can spend digital currencies such as Bitcoin at will. Of course, when quantum computers will come out is also a question in itself. Digital currency protocols are constantly adding new encryption standards. However, the potential threats posed by quantum computers have to attract the attention of investors.
9. There is the possibility of a major reversal at the supply and demand level
The market capitalization of the blockchain token market has hovered near one trillion U.S. dollars, although OTC funds are still flowing in continuously. Influx, but the stability and growth rate of its capital inflows are questionable. The supply of encrypted digital currencies is a very embarrassing matter. From a single digital currency level, the total amount is strictly limited. For example, there are only 21 million Bitcoins, but the threshold for issuing encrypted digital currencies is getting lower and lower. Anyone and any organization can issue cryptocurrencies anytime, anywhere, and there is almost no limit to the supply. On the other hand, transaction costs continue to increase and are suppressing the demand side. Currently, investors in transactions need to pay handling fees on exchanges and miners when transferring money. If countries start to tax digital currency transactions in the future, , which means that this market has to bear more operating costs without generating its own profitability. If coupled with the continuous increase in supply level, the overall market supply and demand expectations may undergo reversal changes at a certain moment.
10. Blockchain assets lack legal protection
It is not uncommon for global digital currency exchanges to be "hacked", and during various over-the-counter and on-site transactions, , fraud and other incidents also occur from time to time, and the legal protection for investors is very limited. Especially for domestic investors, once they are stolen or defrauded due to trading digital currencies, it can be said that it is almost difficult to effectively recover. Due to the lack of intermediary guarantees such as banks, the security of digital currency is entirely your own responsibility. Although this is in line with the logic of self-keeping of private property, it also brings greater uncertainty to the storage and trading of digital currency assets. Before there is a complete legal system to protect the rights and interests of personal digital currency assets, the legal safety of investing in blockchain-related assets is a very serious issue.
Ⅱ Zihang talks about currency: Newbies in the currency circle don’t even know what “blockchain” is
First of all, I believe that before everyone learns about blockchain, You’ve heard of Bitcoin first, right? Because we all know that the first people to hold Bitcoin made money!
But one point of view is wrong: What point of view? Many people believe that Bitcoin is the blockchain. In fact, Bitcoin is just a type of blockchain asset and the earliest blockchain asset. The concept of blockchain comes from Bitcoin. The reason why Bitcoin can be so arrogant and exist independently without relying on any organizational structure is because the bottom layer is supported by blockchain technology.
Just like our mobile phones can run, the underlyingIt is the same as Android or ios system as support. So what kind of technology is blockchain? Why is it so powerful? Can make Bitcoin so valuable! The English name of blockchain is block chain, and block means block. You can imagine that if you fall or bump into something, you may have bruises, right? The blocks in the blockchain contain some The data block of transaction information, something, may have a bruise, right? The block in the blockchain contains some data blocks of transaction information, and the chain in the blockchain connects the data blocks. , this is like a big ledger. Anyone who uses this blockchain ledger can directly query any transaction information arranged in order, and it is difficult to tamper with. So how does it do it?
Let’s give a simple example using local materials: There are now a total of 100 readers who are linked through the Internet to form a blockchain network system. Please pay attention! We are not reading this article now, but a blockchain network system. In this system, I ask one of the people, say this person is called panda, to borrow 10 yuan, and then panda transfers the 10 yuan to me in the network system. Then my account or wallet increased by 10 yuan. As for panda, who lent money to Bibi, his account lost 10 yuan. After this transaction is completed, other people in our blockchain network system, after seeing it, will take a small notebook and record the matter. My account will increase by 10 yuan, and panda's account will decrease by 10 yuan.
That’s not right, then what are you doing when you are full and have nothing to do? Why should we record these small and medium-sized "bad things"? It’s because the network system will pay wages to those who participate in recording. As long as she records it once, the system will automatically reward tokens that are common in this network system. As long as there is money, everyone is willing to do anything. In reality, there are actually countless individuals in a blockchain system, which means that our group not only has only 13 people, but they don’t know each other yet, but they can all communicate with each other on the system chain and record them in the blockchain in order. For this transaction in the network, if one day I want to default on the debt and no longer plan to pay back 10 yuan to panda, then I must convince more than 51% of the people in the blockchain network system to delete this record or tamper.
If it were replaced by real-world computing power, it would be almost impossible and would require huge costs. This is the characteristic of blockchain technology - decentralized collaboration, transaction data is difficult to tamper with, and transaction information is transparent and queryable. Its main function is to solve two problems that are difficult to solve on the Internet - one is trust and the other is value transfer.
The so-called trust, according to the above scenario, is that I may default on the loan and take the money and run away; the value transfer is: my borrowing account should increase by 10 yuan, and panda’sThe account becomes -10 yuan in money exchange. Then we may have questions again, isn't Alipay and WeChat payment solved now? Wouldn’t it be enough to just confirm the account and transfer the money directly and send a red envelope? Yes, Alibaba and Tencent exist based on solving these two problems. but! Thinking about it from another perspective, if a mere blockchain technology can solve these two problems now, can huge and complex institutions like Alibaba and Tencent be abandoned?
Rebuilding a new network system to apply it to more fields is on the way.
Because, the final conclusion is: this technology builds the value of Bitcoin, then this technical logic can also be used in many other fields. Maybe one day you will be happy to discover - Huh? I am now using a product from a certain blockchain technology company! ? Just like many years ago, one day you unknowingly used QQ and started to learn to watch videos and play games online. Having said that, what does it mean that Bitcoin is an early asset of the blockchain? Why does it add value? According to the scenario mentioned above, the so-called tokens are the tokens issued by the system to everyone in the group by participating in accounting. These tokens are blockchain assets. (The behavior of everyone participating in bookkeeping is commonly known as mining.) Bitcoin itself is the value token of the Bitcoin blockchain network system
Then why is it Will it add value? Because its quantity is limited, the number of issuances is determined at one time from the beginning of the establishment of the network system and will never be issued additionally.
So, in the future, the more people participate in accounting in a certain blockchain network, the number of people who get it will gradually decrease, and value-added will become inevitable. This is like Alibaba's early stocks. After the Alipay application is launched, the more people participate in using it, the more it is needed, and Alibaba's stocks will inevitably increase in value.
Of course, there are currently many projects applying blockchain technology, but most of them have not found a landing scenario. However, the more people believe that a project created using blockchain technology will be used in the future. If necessary, the price of the tokens of this project will be pushed up. Therefore, there are far more investment opportunities in blockchain assets than in the ordinary stock market. If you invest in a value project, then it may skyrocket like Bitcoin a few years ago, which skyrocketed from 130,000 per coin to a little over 40,000 now. In other words, you don’t need to consider any investment opportunities in other varieties. A few years ago, if you bought Bitcoin with your eyes closed and then ignored it and just went about your own business, the return on this investment would be 100 times in one year.
Profit! How much is that right? The opportunities in this industry are far more than these. Almost all currencies will have the opportunity to rise or fall sharply, but this range of rise and fall is not like the 10% daily limit in stocks. Blockchain assets disappear from trading around the world 24 hours a day, and It is implemented as T+0, and there is no price limit on the price.The price of any variety is completely limited by the rise and fall and the pursuit of funds. Most varieties have experienced an increase of more than 100% throughout the year, or even several times higher. This kind of investment opportunity is also found in other markets. Very hard to find.
The currency circle is like Tai Chi. Only when a person is in a state of tranquility can he feel the opponent's strength and intention in the push hand for the first time. What I felt at the time was that only by clearing myself could I receive information to the maximum extent and quickly, and make correct judgments and responses. The same is true in the currency circle.
This material is for learning reference only and does not constitute buying or selling advice. Buy and sell based on it at your own risk!
Ⅲ What time does Binance reset to zero every day?
Binance will not reset to zero, it will just update.
Binance counts a new day at 8 a.m. Beijing time, which is Binance’s default daily opening time. Cryptocurrency is global and does not respect national boundaries. Some platforms use UTC as the starting point for opening, which is 8 a.m. Beijing time. The price increases and decreases shown on Binance are compared to those 24 hours ago. Because there is no opening time and closing time for cryptocurrency trading, cryptocurrency is continuously traded 24 hours * 366 days.
Extended information:
1. Introduction to Binance Coin:
BNB-Binance Coin is a decentralized blockchain digital asset based on Ethereum. As the platform currency of Binance Exchange, I believe most investors still have certain recognition of its market trends and the rise of the exchange.
BNB, as the fuel of the Binance ecosystem and decentralized exchange, has been applied in many scenarios. For example, using BNB to deduct binance transaction fees can get up to 50% discount, which can be used in Monaco Visa and APP applications. BNB payment, you can use BNB to purchase virtual gifts, etc. on the Uplive live broadcast platform. Currently, BNB ranks firmly among the top 20 in the world, and its best ranking is among the top 10 in the world. It is supported by blockchain enthusiasts in more than 180 countries and regions around the world.
Based on the development situation of the entire market exchange, Binance Exchange is also recognized as the top brother. It has risen in just two years, surpassing many second- and third-tier exchanges, and its users have rapidly spread to many countries and regions around the world. . The current price of BNB is 140, which is a correction compared to the previous price of 180. In terms of long-term value, BNB is still worth investing in.
2. Does Binance trade 24 hours a day?
Binance trades 24 hours a day. Digital currencies are different from stocks. Digital currencies are all traded 24 hours a day. Digital currencies do not have any trading restrictions, 7*24 hours trading, and there are no price limits. This is pushing transactions to the extreme. The liquidity of digital currency is stronger than any asset and can be realized through transactions at any time. This is far beyond the reach of traditional investment assets.
3. Is Binance a legitimate platform?
Is Binance a legitimate platform?Binance is a leading international platform for blockchain digital assets, providing the world with a wide range of Bitcoin transactions, blockchain education, blockchain project incubation, blockchain asset issuance platforms, blockchain research institutes, and Blockchain charity and other services. Although many of the services provided by Binance are related to blockchain, it is still one of the top Bitcoin trading platforms in the country. Currently, users cover more than 180 countries and regions around the world. With 1.4 million orders/second core memory matching technology, it is one of the fastest platforms for global cryptocurrency transactions and one of the platforms with the largest cryptocurrency transaction volume in the world. Therefore, Bitcoin trading on Binance is very secure, and it has become a favorite Bitcoin trading platform for many investors.
IV The best example to illustrate the transaction process of blockchain is
1. Definition
Blockchain is like an open Sexual network ledger. It originated from Bitcoin and is the underlying technology of Bitcoin. In a Bitcoin transaction, all the information recorded in the transaction is packaged into a "Block" for storage. With the expansion of information exchange, blocks are linked to each other, forming a blockchain.
2. Characteristics
Digital currency represented by Bitcoin is a peer-to-peer electronic cash system. Among them, each transaction will be broadcast to all participants in the network, and will be recorded in the ledger after multiple confirmations. This ledger is the "blockchain". Each participant will have his or her own ledger. In this way, when false information occurs, it can be broken through mutual verification, thereby ensuring network security.
In the blockchain, every node is equal and there is no centralized management organization. This "decentralization" feature makes the blockchain unnecessary to rely on third parties and its operation is independent. Ability to independently self-verify without any human intervention required. In addition, the blockchain network is open to the world, and anyone can query data through the public port, so the entire system is highly transparent.
3. Application
In short, the blockchain is a trusted database and a reliable "ledger". In the future, it will be used in cross-border payments, securities, loans, voting, etc. For example, in cross-border payments, with the security provided by the blockchain, money can be sent to the world anytime and anywhere, thus eliminating many intermediate links and high handling fees.
IV Analysis of the relationship between distributed and blockchain
We have talked about the discussion of blockchain technology many times in previous articles, and also I have introduced to you which programming development languages are used to realize the realization of the blockchain insight chain technology. Today we will learn together how to analyze and understand the structure of the blockchain from a distributed perspective.
Blockchain is the underlying technology in Bitcoin and is used to implement a centerless peer-to-peer cash system. Because there is no central organization involved, Bitcoin uses blocks Organize transactions in the form of chainsData to prevent "double spending" and reach transaction consensus.
Digital assets in the traditional sense, such as game currency, are managed in a centralized manner and can only be transferred in a single system, coordinated by a centralized organization. , usually stored in a database. From a macro perspective, blockchain and database are both used to store data, but the form of data access is different.
The blockchain is essentially a distributed database that is active in different places. The idea of multi-activity in different places was originally to solve the disaster recovery problem of the system. It has been a direction explored in the field of distributed databases for many years, but with little success because multi-activity in different places needs to solve the problem of data conflicts. This problem is actually Not easy to solve. However, the blockchain born in Bitcoin has realized the world's largest remote multi-active database in a completely new way. It is completely open, has no boundaries, supports tens of thousands of nodes and can join and exit at random.
The problem of data conflicts is even more prominent in the blockchain. Each node in the blockchain is a completely peer-to-peer multi-active architecture, and tens of thousands of nodes must reach an agreement. , who should the data be based on? The method used by Bitcoin is POW. Everyone calculates a puzzle. Whoever calculates it first will have the right to keep accounts. In this cycle, the account he keeps shall prevail in the next cycle. Everyone recalculates. Nodes competing for accounting rights decide which Quanlu transactions are packaged into blocks and synchronize the blocks to other nodes. Other nodes still need to verify the transactions in the block based on local data, unlike the master-slave nodes of the database. This is the consensus algorithm in the blockchain. Although POW consumes a lot of computing power, the advantage is that in the process of competing for accounting rights, POW only needs to calculate hashes in its own nodes and does not need to go through network voting for election. The cost of network communication is small, and it is suitable for consensus among large-scale nodes. Shahe Computer Training believes that POW is a complete, simple and crude method in the current public chain and can stand the test, but the problem is that the efficiency is too low.
So PoS and DPoS were developed later. Whoever has more assets will have the right to bookkeeping, or everyone will vote, but this also introduces economic problems. For example, the so-called vote-buying issue is difficult to control. In traditional distributed databases, it is not called a consensus algorithm but a consistency algorithm, which is essentially the same thing. However, the number of nodes in a distributed database is generally very small, and the network is trustworthy. Usually the nodes are safe and reliable. We can basically trust every node. Even if it fails and does not respond, it will never respond. False response. Therefore, in traditional company distributed data, Raft or Paxos protocols are used to implement this consistency algorithm.
VI 108 knowledge points for getting started with blockchain
1. What is blockchain
Putting multiple transactions together The information and the information indicating the block are packaged together, and the verified package isIt's a block.
Each block stores the hash value of the previous block, creating a relationship between blocks, that is to say, a chain. Together they are called blockchain.
2. What is Bitcoin
The concept of Bitcoin was proposed by Satoshi Nakamoto in 2009, with a total number of 21 million. The Bitcoin chain generates a block approximately every 10 minutes, and this block is mined by miners for 10 minutes. As a reward to miners, a certain number of Bitcoins will be issued to miners, but this certain number is halved every four years. Now it's 12.5. If this continues, all Bitcoins will be available in 2040.
3. What is Ethereum
The biggest difference between Ethereum and Bitcoin is the smart contract. This allows developers to develop and run various applications on it.
4. Distributed ledger
It is a database that is shared, replicated and synchronized among network members. To put it bluntly, all users on the blockchain have accounting functions and the content is consistent, which ensures that the data cannot be tampered with.
5. What is quasi-anonymity?
I believe everyone has a wallet, and the wallet address (a string of characters) used to send transactions is quasi-anonymity.
6. What is open transparency/traceability
The blockchain stores all data from history to the present, anyone can view it, and can also view any data in history.
7. What is tamper-proof
Historical data and current transaction data cannot be tampered with. The data is stored in the block on the chain and has a hash value. If the block information is modified, its hash value will also change, and the hash values of all blocks following it must also be modified to form a new chain. At the same time, the main chain is still conducting transactions to generate blocks. The modified chain must always generate blocks synchronously with the main chain to ensure that the length of the chain is the same. The cost is too high, just to modify a piece of data.
8. What is anti-DDoS attack
DDoS: Hackers control many people’s computers or mobile phones and allow them to access a website at the same time. Since the bandwidth of the server is limited, a large amount of traffic The influx of data may cause the website to fail to function properly, resulting in losses. However, the blockchain is distributed and there is no central server. If one node fails, other nodes will not be affected. Theoretically, if more than 51% of the nodes are attacked, problems will occur.
9. Definition of main chain
Taking Bitcoin as an example, at a certain point in time, a block is mined by two miners at the same time, and then 6 blocks are generated first. The chain of blocks is the main chain
10. Single chain/multi-chain
Single chain refers to the data structure that handles everything on one chain. The core essence of the multi-chain structure is composed of public chain + N sub-chains. There is only one, but in theory there can be countless sub-chains, and each sub-chain can run one or more DAPP systems
11. Public chain/alliance chain/private chain
Public Chain: Everyone can participate in the blockchain
Alliance chain: Only alliance members are allowed to participate in accounting and query
Private chain: Writing and viewing permissions are only controlled by one person In the hands of the organization.
12. Consensus layer, data layer, etc.
There are six overall structures of the blockchain: data layer, network layer, consensus layer, incentive layer, contract layer, and application layer. Data layer: a layer that records data, belonging to the underlying technology; network layer: a structure for building a blockchain network, which determines how users are organized. Consensus layer: Provides a set of rules to allow everyone to reach agreement on the information received and stored. Incentive layer: Design incentive policies to encourage users to participate in the blockchain ecosystem; Contract layer: Generally refers to "smart contracts", which are a set of contract systems that can be automatically executed and written according to their own needs. Application layer: Applications on the blockchain, similar to mobile apps. Former Distributed Storage R&D Center
13. Timestamp
The timestamp refers to January 1, 1970 Day 0 hours 0 minutes 0 seconds 0... The total number of seconds from the current time to now, or the total number of nanoseconds and other very large numbers. Each block is generated with a timestamp indicating when the block was generated.
14. Block/block header/block body
Block is the basic unit of blockchain, and block header and block body are components of blockchain. The information contained in the block header includes the hash of the previous block, the hash of this block, timestamp, etc. The block body is the detailed data in the block.
15. Merkle tree
Merkle tree, also called binary tree, is a data structure for storing data. The bottom layer is the original data contained in all blocks, and the upper layer is each The hash value of a block, the hash value of this layer is combined in pairs to generate a new hash value, forming a new layer, and then upwards layer by layer, until a hash value is generated. Such a structure can be used to quickly compare large amounts of data, and you can quickly find the bottom-level historical data you want without downloading all the data.
16. What is expansion?
The size of a Bitcoin block is about 1M and can save 4,000 transaction records. Expansion means making the block larger so that more data can be stored.
17. What is a chain?
Each block will save the hash of the previous block, creating a relationship between the blocks. This relationship is a chain. Data such as block transaction records and status changes are stored through this chain.
18. Block height
This is not the height mentioned in terms of distance. It refers to the total number of blocks between the block and the first block on the chain. This height indicates which block it is, and is just for identification purposes.
19. Fork
Two blocks were generated at the same time (the transaction information in the block is the same, but the hash value of the block is different), and then in Two chains are forked from these two blocks. Whoever generates 6 blocks from these two links first will be the main chain, and the other chain will be discarded.
20. Ghost Protocol
Mining pools with high computing power can easily generate blocks faster than mining machines with low computing power, resulting in most of the blocks on the blockchain being generated by these mining pools with high computing power. However, the blocks generated by mining machines with low computing power are not stored on the chain because they are slow, and these blocks will be invalid.
The ghost protocol allows blocks that should be invalidated to remain on the chain for a short time, and can also be used as part of the proof of work
. In this way, miners with small computing power will contribute more to the main chain, and large mining pools will not be able to monopolize the confirmation of new blocks.
21. Orphan block
As mentioned before, orphan blocks are blocks generated at the same time. One of them forms a chain, and the other does not form a chain. Then this block that does not form a chain is called an orphan block.
22. Uncle block
The orphan block mentioned above, through the ghost protocol, makes it part of the proof of work, then it will not be discarded and will be saved in the main chain superior. This block is the next
23 replay attack
The hacker resends the message that has been sent to the server. Sometimes this can deceive the server into responding multiple times.
24. Directed acyclic graph
Also called data set DAG (directed acyclic graph), DAG is an ideal multi-chain data structure. Most of the blockchains mentioned now are single chains, that is, one block is connected to another block, and DAG is multiple blocks connected. The advantage is that several blocks can be generated at the same time, so the network can process a large number of transactions at the same time, and the throughput will definitely increase. However, there are many shortcomings and it is currently in the research stage.
25. What is mining
MiningThe process is to perform a series of conversions, connections and hash operations on the above six fields, and continue to try the random numbers one by one, and finally successfully find a random number that meets the conditions: the value after the hash operation, If the hash value is smaller than the preset difficulty value, then the mining is successful. The node can broadcast the block to neighboring nodes. The neighboring nodes receive the block and perform the same operation on the above six fields to verify compliance. , and then broadcast it to other nodes, and other nodes use the same algorithm to verify. If 51% of the nodes in the entire network are successfully verified, this block will be truly "mined" successfully, and each node will Add this block to the end of the previous block, delete the list with the same record in the block, and repeat the above process again. Another thing to mention is that regardless of whether the mining is successful or not, each node will pre-record the reward of 50 Bitcoins and the handling fees of all transactions (total input-total output) in the first item of the transaction list (this is " The most fundamental purpose of "mining" is also the fundamental reason to ensure the long-term stable operation of the blockchain), the output address is the address of this node, but if the mining is unsuccessful, the transaction will be invalidated without any reward. Moreover, this transaction called "production transaction" does not participate in the "mining" calculation.
26. Mining machines/mining farms
Mining machines are computers with various configurations, and computing power is the biggest difference between them. A place where mining machines are concentrated in one place is a mining farm
27. Mining pool
Miners join together to form a team, and the computer group under this team is a mining pool. Mining rewards are distributed based on your own computing power contribution.
28. Mining difficulty and computing power
Mining difficulty is to ensure that the interval between generating blocks is stable within a certain short time, such as Bitcoin’s 10 minutes.
p>Block 1. Computing power is the configuration of the mining machine.
29. Verification
When verification in the blockchain is a confirmation of the legality of the transaction, each node will verify the transaction once when the transaction message is propagated between nodes. Whether the transaction is legal. For example, verify whether the syntax of the transaction is correct, whether the transaction amount is greater than 0, whether the entered transaction amount is reasonable, etc. After passing the verification, it will be packaged and handed over to the miners for mining.
30. Transaction broadcast
The node sends information to other nodes through the network.
31. Mining fees
For the blockchain to work non-stop like a perpetual motion machine, miners need to maintain the system. Therefore, the miners must be given favorable fees to make it sustainable.
32. Transaction confirmation
When a transaction occurs, the block recording the transaction will be confirmed for the first time, and every subsequent block on the chain will be confirmed.A block is reconfirmed: When the number of confirmations reaches 6 or more, the transaction is generally considered safe and difficult to tamper with.
33. Double transaction
That is, I have 10 yuan, I use the 10 yuan to buy a pack of cigarettes, and then instantly use the 10 yuan that has not yet been paid. Bought another cup of coffee. So when verifying the transaction, you need to confirm whether the 10 yuan has been spent.
34. UTXO unspent transaction output
It is a data structure containing transaction data and execution code, which can be understood as digital currency that exists but has not yet been consumed.
35. Transactions per second TPS
That is throughput, tps refers to the number of transactions the system can process per second.
36. Wallet
Similar to Alipay, it is used to store digital currencies, and blockchain technology is more secure.
37. Cold wallet/hot wallet
A cold wallet is an offline wallet. The principle is to store it locally and use QR code communication to prevent the private key from touching the Internet. A hot wallet is an online wallet. The principle is to encrypt the private key and store it on the server. When it is needed, it is downloaded from the server and decrypted on the browser side.
38. Software Wallet/Hardware Wallet
A software wallet is a computer program. Generally speaking, a software wallet is a program that interacts with the blockchain and allows users to receive, store, and send digital currencies and can store multiple keys. Hardware wallets are smart devices that specialize in handling digital currencies.
39. Airdrop
The project sends digital currency to each user’s wallet address.
40. Mapping
Mapping is related to the issuance of blockchain currency and is a mapping between chains. For example, there are some blockchain companies that have not completed the development of the chain in the early stage. They rely on Ethereum to issue their own currency. The issuance and transactions of the early currency are all operated on Ethereum. With the development of the company, the company's own chain development has been completed. The company wants to map all the previous information on Ethereum to its own chain. This process is mapping.
41. Position
Refers to the ratio of the investor’s actual investment to the actual investment funds
42. Full position
Buy with all funds Enter Bitcoin
43. Reduce the position
Sell some of the Bitcoins, but not all of them
44. Heavy positions
Compared with Bitcoin, Bitcoin accounts for a larger share of funds
45． Short position
Compared with Bitcoin, the share of funds is larger
46. Short position
Sell all the Bitcoins you hold and convert them all into funds.
47. Stop loss
After obtaining a certain profit, sell the Bitcoin held to keep the profit
48. Stop loss
After losses reach a certain level, sell the Bitcoins you hold to prevent further losses
49. Bull market
Prices continue to rise and the outlook is optimistic
50. Bear market
Prices continue to fall, and the outlook is bleak
51. Long (long)
The buyer believes that the currency price will rise in the future, buys the currency, and waits for the currency price After rising, sell at a high price to take profits
52. Short position (short selling)
The seller believes that the currency price will fall in the future, and sells the currency he holds (or borrows it from the trading platform) (coin) sell, wait for the price of the currency to fall, buy at a low price to take profits
53. Open a position
Buy virtual currencies such as Bitcoin
54 . Cover the position
Buy Bitcoin and other virtual currencies in batches, for example: buy 1 BTC first, and then buy 1 BTC later
55. Full position
All funds are purchased at one time to buy a certain virtual currency
56. Rebound
When the currency price falls, the price rebounds and adjusts because it falls too fast
57 .Consolidation (sideways)
The price fluctuation is small and the currency price is stable
58. Yin fall
The currency price declines slowly
59. Diving (waterfall)
The currency price fell rapidly and to a large extent
60. Cutting meat
After buying Bitcoin, the currency price fell, as Avoid expanding losses and selling Bitcoin at a loss. Or after borrowing the currency to go short, the currency price rises, and you buy Bitcoin at a loss
61. Hold on
Expect the currency price to rise, but unexpectedly the currency price falls after buying; or expect the currency price fell, but unexpectedly, after selling, the currency price rose
62. Unwinding
After buying Bitcoin, the currency price fell, causing a temporary book loss, but then the currency price rebounded and the loss was reversed Wei Ying
63. Ta Kong
After selling Bitcoin because of the bearish market outlook, the currency price continued to rise. I was unable to buy it in time, so I failed to make a profit
64. Overbought
The currency price continued to rise. At a certain height, the buyer's power is basically exhausted, and the currency price is about to fall
65. Oversold
The currency price continues to fall to a certain low, the seller's power is basically exhausted, and the currency price is about to fall. Recover
66. Lure bulls
The currency price has been consolidating for a long time and is more likely to fall. Most of the short sellers have sold Bitcoin. Suddenly the short side pulls up the currency price and induces Many parties thought that the price of the currency would rise and bought one after another. As a result, the short parties suppressed the price of the currency and locked up the long parties.
67. Short-selling
After the bulls bought Bitcoin, they deliberately suppressed the currency. price, making short sellers think that the price of the currency will fall, and sell them one after another. As a result, they fall into the trap of bulls
68. What is NFT
The full name of NFT is "Non-Fungible Tokens", which is non-fungible tokens. Simply put, it is an indivisible copyright certificate on the blockchain. It is mainly used to confirm and transfer the rights of digital assets. The difference from digital currencies is that it Unique, indivisible, and essentially a unique digital asset.
69. What is the Metaverse
The Metaverse is a collection of virtual time and space, consisting of a series of augmented reality (AR), virtual reality (VR) and the Internet (Internet) Composed of digital currency, which carries the function of value transfer in this world.
70. What is DeFi
DeFi, the full name is Decentralized Finance, which is "decentralized finance" or "distributed finance". "Decentralized finance", as opposed to traditional centralized finance, refers to various financial applications based on open decentralized networks. The goal is to establish a multi-level financial system based on blockchain technology and cryptocurrency. As a basis, re-create and improve the existing financial system
71. Who is Satoshi Nakamoto?
72. Bitcoin is different from Q Coin
Bitcoin is a decentralized digital asset with no issuing entity. Q Coin is an electronic currency issued by Tencent. It is similar to electronic points, but it is not actually a currency. Q Coin requires a centralized issuing institution. Q Coin can only be recognized and used because of the credit endorsement of Tencent. The scope of use is also limited to Tencent's games and services. The value of Q coins is entirely based on people's trust in Tencent.
Bitcoin is not issued through a centralized institution, but it canIt is widely recognized around the world because Bitcoin can self-certify its credibility. The issuance and circulation of Bitcoin are jointly accounted for by miners across the entire network. It does not require a central organization to ensure that no one can tamper with the ledger.
73. What is a mining machine?
Taking Bitcoin as an example, a Bitcoin mining machine is a professional equipment that competes for accounting rights by running a large amount of calculations to obtain new Bitcoin rewards. It is generally composed of a mining chip, a heat sink and a fan, and only performs A single calculation program consumes a lot of power. Mining is actually a competition between miners for computing power. Miners with more computing power have a greater probability of mining Bitcoin. As the computing power of the entire network increases, it becomes increasingly difficult to mine bits with traditional equipment (CPU, GPU), and people have developed chips specifically for mining. The chip is the core part of the mining machine. The operation of the chip will generate a large amount of heat. In order to dissipate heat, Bitcoin mining machines are generally equipped with heat sinks and fans. Users download Bitcoin mining software on their computers, use the software to assign tasks to each mining machine, and then start mining. Each currency has a different algorithm and requires different mining machines.
74. What is quantitative trading?
Quantitative trading, sometimes also called automated trading, refers to the use of advanced mathematical models to replace human subjective judgments, which greatly reduces the impact of investor sentiment fluctuations and avoids extreme fanaticism or pessimism in the market. make irrational investment decisions. There are many types of quantitative trading, including cross-platform trading, trend trading, hedging, etc. Cross-platform trading means that when the price difference between different target platforms reaches a certain amount, sell on the platform with a higher price and buy on the platform with a lower price.
75. Blockchain asset over-the-counter trading
Over-the-counter trading is also called OTC trading. Users need to find their own counterparties and do not need to match the transaction. The transaction price is determined by negotiation between the two parties. The two parties can fully communicate through face-to-face negotiation or telephone communication.
76. What is a timestamp?
The blockchain ensures that each block is connected sequentially through timestamps. Timestamps enable every piece of data on the blockchain to have a time stamp. Simply put, timestamps prove when something happened on the blockchain and cannot be tampered with by anyone.
77. What is a blockchain fork?
Upgrading software in a centralized system is very simple, just click "Upgrade" in the app store. However, in decentralized systems such as blockchain, "upgrading" is not that simple, and a disagreement may even cause a blockchain fork. Simply put, a fork refers to a disagreement when the blockchain is "upgraded", resulting in a fork in the blockchain. Because there is no centralized organization, every code upgrade of digital assets such as Bitcoin needs to be unanimously recognized by the Bitcoin community. If the Bitcoin community cannot reach an agreement, the blockchain is likely to form a fork.
78. Soft fork and hard fork
Hard fork means that when the Bitcoin code changes, the old nodes refuse to accept the blocks created by the new nodes. Blocks that do not comply with the original rules will be ignored, and miners will follow the original rules and create new blocks after the last block they verified. A soft fork means that old nodes are not aware of the changes to the Bitcoin code and continue to accept blocks created by new nodes. Miners may work on blocks they have no understanding of, or validation of. Both soft forks and hard forks are "backwards compatible" to ensure that new nodes can verify the blockchain from scratch. Backward compatibility means that new software accepts data or code generated by old software. For example, Windows 10 can run Windows XP applications. Soft forks can also be "forward compatible".
79. Classification and application of blockchain projects
Judging from the current mainstream blockchain projects, blockchain projects mainly fall into four categories: Category 1: Currency; The second category: platform category; the third category: application category; the fourth category: asset tokenization.
80. USDT against the US dollar
USDT is Tether USD, a token launched by Tether that is against the US dollar (USD). 1USDT=1 US dollar, users can use USDT and USD for 1:1 exchange at any time. Tether implements a 1:1 reserve guarantee system, that is, each USDT token will have a reserve guarantee of 1 US dollar, which supports the stability of the USDT price. The unit price of a certain digital asset is USDT, which is equivalent to its unit price in US dollars (USD).
81. Altcoins and alternative coins
Altcoins refer to blockchain assets that use the Bitcoin code as a template and make some modifications to its underlying technology blockchain, among which Those with technological innovations or improvements are also called alternative coins. Because the Bitcoin code is open source, the cost of plagiarism in Bitcoin is very low. You can even generate a brand new blockchain by simply copying the Bitcoin code and modifying some parameters.
82. Three major exchanges
Binance: https://accounts.binancezh.ac/zh-CN
Okex: https://www .ouyi.top/
Huobi: https://www.huobi.af/zh-cn
83. Market software
Mytoken: http: //www.mytoken.com/
Non-small account: https://www.feixiaohao.co/
84. Information website
Babbitt: https://www.8btc.cn
Golden Finance: http://www.jinse.com/
p>Coin World News: http://www.bishijie.com
85. Blockchain Browser
BTC: https://btc.com/ < /p>
ETH: https://etherscan.io/
BCH: https://blockchair.com/bitcoin-cash/blocks
LTC: http:/ /www.qukuai.com/search/ltc
ETC: https://gastracker.io/
86. Wallet
Imtoken: https:// imatoken.net/
Bitpie: https://bitpie.com/
87. Decentralized Exchange
uniswap: https://uniswap .org
88. NFT Exchange
Opensea: https://opensea.io
Super Rare ：https://superrare.com/
89. Ladders
Bring your own, buy reliable ladders
90. Platform coins
Digital currency issued by the platform, used to deduct handling fees, transactions, etc.
91. Bull market, bear market
Bull market: rising market
Bear market: falling market
92. Blockchain 1.0
A currency trading system based on distributed ledgers, represented by Bitcoin
93. Blockchain 2.0
The contract blockchain technology represented by Ethereum (smart contract) is 2.0
94. Blockchain 3.0
In the era of intelligent Internet of Things, it goes beyond the financial field and provides various Provide decentralized solutions for various industries
95. Smart Contract
Smart Contract is a computer protocol designed to disseminate, verify or execute contracts in an information-based way. Simply put, an electronic contract is set in advance and once confirmed by both parties , the contract is executed automatically.
96. What is a token?
The token economy is an economic system with Token as the only reference standard, which is equivalent to a pass. If you own Token, you have rights and interests, and you have the right to speak.
Big data is the means of production, AI is the new productivity, and blockchain is the new production relationship. Big data refers to a collection of data that cannot be captured, managed and processed within a certain time range using conventional software tools. It is a massive, high-growth and high-volume data set that requires new processing models to have stronger decision-making power, insight discovery and process optimization capabilities. Diverse information assets. Simply understood, big data is massive data accumulated over a long period of time and cannot be obtained in the short term. Blockchain can be used as a way to obtain big data, but it cannot replace big data. Big data is only used as a medium running in the blockchain and has no absolute technical performance, so the two cannot be confused. (A simple understanding of production relations is labor exchange and consumption relations. The core lies in productivity, and the core of productivity lies in production tools)
ICO, Initial Coin Offering, initial public token issuance, is the first step in the blockchain digital currency industry. Crowdfunding. It is the most popular topic and investment trend in 2017, and the country launched a regulatory plan on September 4. Speaking of ICO, people will think of IPO, and the two are essentially different.
99. Five characteristics of digital currency
The first characteristic: decentralization
The second characteristic: having open source code
The third feature: independent electronic wallet
The fourth feature: constant issuance
The fifth feature: global circulation
100. What is decentralization?
It has no issuer, does not belong to any institution or country, and is a publicly issued currency designed, developed and stored on the Internet by Internet network experts.
100. What is measurement (scarcity)?
Once the total amount of issuance is set, it is permanently fixed, cannot be changed, cannot be over-issued at will, and is subject to global Internet supervision. Because the difficulty of mining and mining changes over time, the longer the time, the greater the difficulty of mining, and the fewer coins are mined, so it is scarce.
101. What is open source code?
Alphanumeric stored on the Internet,Anyone can check out the source code of its design, everyone can participate, it can be mined, and it is open to the world.
102. What is anonymous transaction? Private wallet private?
Everyone can register and download the wallet online without real-name authentication. It is completely composed of encrypted digital codes. It can be sent and traded globally in real-time point-to-point without resorting to banks or any institutions. It cannot be traced by anyone without my authorization. ,Inquire.
A contract transaction refers to an agreement between a buyer and seller to receive a certain amount of an asset at a specified price at a certain time in the future. The objects of contract trading are standardized contracts formulated by the exchange. The exchange stipulates standardized information such as commodity type, transaction time, quantity, etc. A contract represents the rights and obligations of the buyer and seller.
105. Digital Currency Industry Chain
Chip manufacturers, mining machine manufacturers, and mining machine agents mine and export to exchanges for retail investors to speculate in coins< /p>
106. Who is Erben?
Erben: Digital Currency Value Investor
Investment style: Steady
Building a community: Erben’s Miscellaneous Talks (High Quality Price Investment Community)
p>
107. Two investment strategies
Combining long and short term, focusing on price investment, no contracts, no short-term play
Reasonable layout, scientific operation, prudent and conservative, making periodic money
108. Two books?
Welcome currency friends and seek common development
