当前位置首页 > 区块链知识> 正文

通行区块链

发布时间：2023-12-05-18:02:00 来源：网络区块链知识区块

通行区块链

随着科技的发展，区块链技术也在不断发展壮大，区块链技术正在改变我们的生活方式，改变传统的业务模式，提升社会效率。那么今天我们就来聊聊通行区块链，它可以为我们带来什么？

首先，通行区块链是一种分布式账本技术，它可以记录所有交易的信息，比如转账、购买、投资等，这些交易信息都是安全可靠的，不可篡改。

其次，通行区块链可以让我们的交易更加安全，因为它可以让参与者之间可以进行安全可靠的交易，而不需要第三方的介入，这样可以降低交易成本，提高交易效率。

再次，通行区块链的应用非常广泛，比如金融、医疗、教育等行业，它可以为这些行业带来更多的效率和便利，比如金融行业可以更快捷的进行转账，而医疗行业可以更安全的存储病人的健康记录。

最后，通行区块链可以为我们提供更安全、更高效的交易方式，比如可以让支付更快捷、安全、便捷，也可以让社会资源更有效的分配，提升社会效率。

总之，通行区块链可以为我们带来更多的便利，更高效的交易方式，让我们的生活更加安全和便利。

请查看相关英文文档

A. Daily Blockchain News

The Central Committee of the Communist Party of China and the State Council issued the "National Standardization Development Outline" document mentioning strengthening standard research in the blockchain field

According to Xinhua News Agency today, the Central Committee of the Communist Party of China and the State Council recently issued the "National Standardization Development Outline" (hereinafter referred to as the "Outline") and issued a notice requiring all regions and departments to conscientiously implement it based on actual conditions. The "Outline" points out that research on standards in key technical fields should be strengthened. Carry out standardization research in fields such as artificial intelligence, quantum information, and biotechnology. In technological fields with broad application prospects such as the integration of informatization and informatization, new generation information technology, big data, blockchain, health, new energy, and new materials, we will simultaneously deploy technology research and development, standard development, and industrial promotion to accelerate the pace of industrialization of new technologies. . Research and formulate key technical standards in the fields of smart ships, high-speed rail, new energy vehicles, intelligent connected cars, and robots to promote industrial change. Timely formulate and improve technical safety-related standards in biomedical research, molecular breeding, driverless driving and other fields, and improve the level of safety risk management in technical fields.

Huawei’s chief consultant for financial digital transformation: 5G news and digital renminbi will change payment methods and forms

According to mobile payment network, Zhou Tao, chief consultant of Huawei's financial digital transformation, recently gave a speech at the "10th China Payment and Clearing Forum" and said: There are many technologies that will be used in the payment and clearing field. Huawei believes that there are five key technologies that will be used in the payment and clearing field, and Change the way and form of payment, including 5G messaging; digital RMB; Hongmeng system; cloud, big data, AI; regulatory technology.

Beijing will launch a series of pilot activities for digital renminbi

According to the Beijing Daily, Beijing will launch the "'Beijing Lottery' benefit" in the near future "People's Livelihood Digital Carnival" digital RMB pilot event. This event will focus on transportation scenarios and support consumers in Beijing to enjoy digital RMB payment discounts through coupon issuance. The first phase of the "'Jingcai' Pass" activity was launched to support consumers to receive digital RMB bus tickets and experience traveling by bus/subway for 1 cent.

The People's Bank of China will continue to steadily and orderly promote the construction of key application scenarios to ensure that relevant people during the Beijing Winter Olympics can obtain safe, convenient, stable and efficient digital renminbi services; at the same time, around the "'Beijing Lottery'" With the theme of "Benefiting People's Livelihood", we will explore the launch of more pilot activities in the fields of living payment, communication services, travel and parking, etc., so that consumers in Beijing can enjoy more digital RMB "Beijing Lottery".

Vice President of the Bank of China Research Institute: Digital euro may lead to the substitution of other countries’ currencies

Zhong Hong, deputy director of the Bank of China Research Institute, and Ma Tianjiao, a doctoral candidate at the School of Economics of Nankai University, wrote an article "The Development Prospects and Challenges of the Digital Euro" in the 19th issue of "China Foreign Exchange" in 2021. The article pointed out that the digital euro may bring There are three challenges: first, it is difficult to find a balance between privacy protection and restriction of illegal financial activities; second, there are large differences in technical knowledge, infrastructure, legal environment and preferences within the euro area; third, new requirements for the financial regulatory system are proposed. requirements; in addition, the digital euro will have four potential impacts: First, it will increase the risk of "digital runs" on commercial banks; second, the emergence of the digital euro may lead to the substitution of other countries' currencies; third, it will change the monetary policy transmission mechanism and improve the efficiency of currency injection; fourth, It is difficult to shake the hegemony of the US dollar in the short term, but it will intensify competition among international currencies in the long term.

McKinsey: CBDC and stablecoins may coexist in some form

According to news on October 11, consulting firm McKinsey released its annual "Global Payments Report", which elaborated on stablecoins and stablecoins. The development of CBDC. The report points out that the co-evolution of stablecoins and CBDC will have a direct impact on society, and the two types of currencies may coexist in some form.

As private companies and monetary authorities begin to issue stable cryptocurrencies in a more mainstream manner, people's thinking about cryptocurrencies is changing from a potential store of value to a financial transaction tool. McKinsey pointed out that in this development process, governments (such as the People’s Bank of China exerting greater influence through direct control of monetary policy), private institutions (such as e-commerce or social media giants in the United States may use stablecoins to perform some user transactions) or industries ( For example, stablecoins based on user loyalty) will all play a certain role.

US SEC Commissioner: Truly decentralized projects pose challenges to encryption regulation

U.S. Treasury Secretary: The U.S.'s breach of the debt ceiling may lead to an economic recession

According to news on October 10, U.S. Treasury Secretary Yellen said that the U.S.'s breach of the debt ceiling may lead to an economic recession. Congress is expected to approve the U.S.'s adoption of the world's lowest tax proposal.

Swiss non-profit think tank 2B4CH launched the "Federal Popular Initiative" and proposed that the central bank hold BTC as a currency reserve asset

October 10 , Adam Back, CEO of blockchain technology company Blockstream, retweeted a tweet from Swiss non-profit think tank 2B4CH. According to the tweet, 2B4CH is launching a “Federal Popular Initiative”ve), it is proposed that in addition to gold as a currency reserve asset, the central bank also adds BTC as a local currency reserve asset. According to relevant content, Article 99, Paragraph 3, of the Swiss Federal Constitution currently stipulates that part of Switzerland’s monetary reserve assets should be held in the form of gold. The proposed new proposal hopes to adjust this provision to “Swiss monetary reserve assets.” Some should be held in gold and Bitcoin.”

Australian Crypto Fund CEO: It is inevitable for super funds and the financial consulting industry to enter the crypto field

News on October 11, Australia Jeff Yew, CEO of cryptocurrency fund Monochrome, predicts that there will be significant investment in the crypto industry from super funds and financial advisors, but only if more is done to educate investors and better regulate the emerging asset class in the world of digital assets. , there is too much information, there is also a lot of misinformation, and there is a need to bridge the knowledge gap between the traditional financial world and the emerging digital asset field. In the future, it is inevitable that the super and financial consulting industries will enter the crypto field.

The Block founder said he would be very careful about the "passive income" promised by NFTs

The Block founder Mike Dudas tweeted today He posted: "I will be very careful about NFT's promise of passive income by holding NFT. It feels like giving you 10 bananas as a reward every day. NFT looks a lot like securities. If the market price is affected by dividend support (which appears to be the case in most cases), then there are substantial regulatory risks."

Newsletter

According to Morgan Creek Union Founder Pompliano revealed that the single-day settlement volume on the BTC chain reached US$31 billion on October 6, setting a record high, which also means that the single-day settlement volume of the BTC network has increased approximately 40 times since the beginning of 2020.

Data shows that BTC has risen in the short term, breaking through the $56,000 mark, now trading at $56,015.78, with an intraday increase of 1.2%. The market fluctuates greatly, so please be prepared for risks. control.

According to news on October 11, according to the market, the current price of Bitcoin is 55,748 US dollars, an increase of about 9 since the beginning of 2021.0%. This means that since the beginning of the year, Bitcoin’s return on investment has outperformed the likes of gold, silver, Apple, Microsoft, Facebook, and Tesla.

According to Polkadot Weekly, Kusama’s 11th slot auction will end on October 13.

On October 11, the decentralized futures trading platform Futureswap announced that its V4 version was launched on Arbitrum, the expansion network on the Ethereum Rinkeby test network.

According to news on October 11, the Bank of Japan’s September quarter survey showed that 75.7% of households said they had never heard of central bank digital currency. In March this year At the time of the survey, it was 76.2%.

Recently, Chicago cryptocurrency startup Decasonic announced the launch of a US$20 million initial fund, which will invest in blockchain, digital assets, decentralized finance, and games. , NFT and other fields.

According to Bitcoin.com, the Governor of the Central Bank of Nigeria (CBN) Godwin Emefiele confirmed on Thursday that the country’s upcoming digital currency eNaira will “ Launching in a few days. eNaira will make Nigeria "one of the first countries in Africa to adopt the digitization of its own currency."

B. 100 million in 6 months! Zhejiang Provincial Department of Finance and Ant Blockchain bid farewell to paper tickets

Zhejiang Online, January 15 (Zhejiang Online Correspondent Chen Jieqiong) In order to better solve the "run once problem", local governments are increasingly applying new technologies. Coming faster and faster. Recently, Ye Shibao, director of the Electronic Invoice Center of the Zhejiang Provincial Department of Finance, said in an interview that since the establishment of the provincial blockchain electronic invoice platform in June last year with Ant Blockchain, as of the end of 2019, 507 medical institutions in Zhejiang Province have been on the blockchain. , 74 public hospitals realized electronic bill reimbursement in other places within the province, 100 million fewer bills were issued, and more than 30 million bill printing costs were saved, once again at the forefront of innovation.

Interestingly, electronic bills have been promoted for many years but there are still many links that cannot be solved. Blockchain has become a key. It is understood that Ant Financial is the first company to explore the application of blockchain technology in digital government industries such as finance and taxation. Through Ant blockchain technology, electronic bills can be "stamped" throughout the entire process from generation, transmission, storage to use. The entire process is traceable and cannot be tampered with, ensuring that the authenticity of the bill can be quickly confirmed in every circulation link, thus Achieve cross-regional and cross-department settlement and reimbursement.

Ye Shibao said that according to previous statistics, people who used to go to medical insuranceDepartment reimbursement, the whole process takes about 12 working days, commercial insurance reimbursement takes longer, 7-60 working days. Now you no longer need to hold the ticket and stamp it in several places, you can quickly receive it with just a few clicks on your mobile phone.

Zhejiang University Shaw Hospital is one of the first hospitals in the province to go online. For Zhao Yue, a bill administrator who has worked in the finance department for 30 years, this is also a good thing.

In the past, he manually reviewed half-meter-high stacks of receipt stubs every day, and packed a large box every eight days on average. The pile could not fit in the office, and he would ask his colleagues to move it to the warehouse for storage. After receiving it and then doing the write-off, "it will take several months to complete the entire process." Nowadays, fewer and fewer bill stubs are collected every day, from the original half meter high to ten or twenty. "The warehouse is no longer needed, and several vehicles that transport the bills for destruction have also been returned."

The full link between hospital electronic bills and reimbursement and claims has been opened up, ultimately improving the patient experience in the "last mile" of medical treatment. Taizhou Hospital dared to be the first to allow Mr. Pang, a local resident, to receive reimbursement without traveling for 7 hours at a time when he was on a business trip to Hangzhou for medical treatment. He became the first person in the country to realize the reimbursement of medical insurance in other places through blockchain electronic bills.

The changes in each hospital are just the tip of the iceberg. Subway ticket settlement on the chain allows users to pass with one code, Hangzhou Internet Court introduced the Ant blockchain, provident fund withdrawal, etc. Zhejiang Province has completed implementation in more than 26 fields. From mobile payment to digital economy, Zhejiang has always been ahead of the curve in the application of innovative technologies.

At the 2020 Zhejiang Two Sessions held recently, Jing Xiandong, a member of the Zhejiang Provincial Committee of the Chinese People’s Political Consultative Conference and chairman of Ant Financial, said that he will continue to use AI and blockchain to promote the upgrading of Zhejiang’s digital government affairs and promote Zhejiang to become a national Digital government model province. In the future, only applications that benefit the real economy and the public will be truly valuable applications, and blockchain must fundamentally move away from virtuality and into reality.

C. 108 essential knowledge points for getting started with blockchain

108 essential knowledge points for getting started with blockchain

( Welcome to share the same channel)

1. What is a blockchain?

Packing and putting together the information of multiple transactions and the information indicating the block. After verification, this Packages are blocks.

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. As it isBy 2040, all Bitcoins will be available.

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 in the hands of one 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 referred to as "smart contracts", it is 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 the time from 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 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. Bifurcation

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 two chains were forked from these two blocks. These two chains Whoever generates 6 blocks 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

The mining process is to perform a series of conversions, connections and hash operations on the above six fields, and continue to try them one by one. The random number you are looking for, and finally successfully find a random number that meets the conditions: the value after hashing is smaller than the hash value of the preset difficulty value, then the mining is successful, and the node can broadcast the area to neighboring nodes. block, neighboring nodes receive the block and perform the same operation on the above six fields to verify compliance, and then forward it to other nodes. Other nodes also use the same algorithm to verify. If there are 51% of nodes in the entire network If all verifications are successful, even if this block is truly "mined" successfully, each node will add this block to the previous one.After the block, delete the list in the block that is the same as its own record, 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/mines

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 unite 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 is issued in 10 minutes

Block 1. The 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 will be confirmed in every area on the chain after the block. 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 existing but not yetUnspent digital currency.

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

All funds are bought 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. Bull (go long)

The buyer believes that the currency price will rise in the future, buys the currency, and after the currency price rises, sells it 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 currency from the trading platform). After the currency price drops, he buys it at a low price to take profits

53. Open a position

Buy Bitcoin and other virtual currencies

54. Cover position

Buy Bitcoin and other virtual currencies in batches, for example: buy 1 BTC first, then Buy another 1BTC

55. Full position

Buy all the funds into a certain virtual currency at once

56. Rebound

When the currency price falls, the price rebounds and adjusts due to the rapid decline

57. Consolidation (sideways)

The price fluctuation is small and the currency price is stable

58. Yin fall

The currency price fell slowly

59. Diving (waterfall)

The currency price fell rapidly and to a large extent

60. Cutting meat

After buying Bitcoin, the price of the currency fell. In order to avoid expanding the loss, the Bitcoin was sold 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 To make a profit

63. Go short

After selling Bitcoin because of the bearish market outlook, the price of the currency continued to rise, and I was unable to buy it in time, so I failed to make a profit

64. Overbought

The currency price continues to rise to 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 has basically been exhausted, and the currency price is about to rise

66. Lure bulls

The currency price has been consolidating for a long time, and it is more likely to fall. Most of the short sellers have sold Bitcoin, and suddenly the short sellers willThe price of the currency is raised, inducing many parties to think that the price of the currency will rise, and they buy one after another. As a result, the short parties suppress the price of the currency, making the long parties trapped

67. Lure shorts

Buying by long parties After Bitcoin, the price of the currency was deliberately suppressed, making short sellers think that the price of the currency would fall, and they sold them one after another. As a result, they fell into the trap of the 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 digital assets. The difference from digital currency is that it is unique and indivisible. In essence, it is 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 is widely recognized around the world because Bitcoin can self-certify its trust. The issuance and circulation of Bitcoin are jointly accounted for by miners across the entire network, and are not A central authority is also needed 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. With the whole network calculationWith the increase in power, it is becoming more and more difficult to mine bits with traditional equipment (CPU, GPU), and people have developed chips specially used 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. backwardCompatibility means that the new software accepts data or code generated by the 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

Okex

Huobi

83. Market software

Mytoken

Non-small account

84. Information website

Babbitt

Golden Finance

Coin World News

85. Blockchain Browser

BTC

ETH

BCH

LTC

ETC

86. Wallet

Imtoken

Bitpie

MetaMask (Little Fox)

87. Decentralized exchange

uniswap

88. NFT exchange

Opensea

Super Rare

89. Ladder

Bring your own, buy a reliable ladder

90. Platform currency

Number issued by the platform Currency, 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 transaction system based on distributed ledgers, represented by Bitcoin

93. Blockchain 2.0

Ethereum The contract blockchain technology represented by (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 decentralization for various industries. solutions

95. Smart Contract

Smart Contract is a computer protocol designed to spread, verify or execute contracts in an information-based way. Simply put, in advance Set up an electronic contract, and once both parties confirm it, the contract will be automatically executed.

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.

97. The difference between big data and blockchain

Big data is the means of production, AI is the new productivity, and blockchain It is a 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)

98. What is ICO?

ICO, Initial Coin Offering, is the initial public offering of tokens, which is crowdfunding in the blockchain digital currency industry. 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, bothThere are essential differences.

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.

101. 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.

102. What is open source code?

The alphanumeric code is stored on the Internet. Anyone can find out the source code of its design, everyone can participate, can mine it, and it is open to the world.

103. 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.

104. What is a contract transaction?

Contract trading refers to an agreement between buyers and sellers 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

106. Who is Bei Feng?

Beifeng: Digital currency value investor

Investment style: Steady

Establish a community: Beidou Community (high-quality price investment community)

107. Beidou Investment Strategy

Combining long-term and short-term, focusing on price investment, no touching contracts, no short-term play

Reasonable layout, scientific operation, steady and conservative, making periodic money

108. Beifeng?

Welcome currency friends and seek common development

D. What is the popular explanation of blockchain

Question 1: What is blockchain and can it be used in popular terms? Explain the principle of 10-point blockchain in easy-to-understand language: decentralized distributed accounting system
The core of blockchain technology is that all currently participating nodes jointly maintain transactions and databases, which makes transactions based on cryptography The principle is not based on trust, so that any two parties who reach an agreement can directly conduct payment transactions without the participation of a third party.
?
Technically speaking, a block is a data structure that records transactions, reflecting the flow of funds for a transaction. The blocks of transactions that have been reached in the system are connected together to form a main chain, and all nodes participating in the calculation record the main chain or part of the main chain. A block contains the following three parts: transaction information, hash hash formed by the previous block, and random number. Transaction information is the task data carried by the block, specifically including the private keys of both parties to the transaction, the number of transactions, the digital signature of electronic currency, etc.; the hash formed by the previous block is used to connect the blocks to realize the past The order of transactions; random numbers are the core of transaction completion. All miner nodes compete to calculate the answer to the random number. The node that gets the answer the fastest generates a new block and broadcasts it to all nodes for update, thus completing a transaction.
1.1 What is Blockchain
Blockchain (BlockChain) refers to a technical solution that collectively maintains a reliable database through decentralization and trustlessness. This technical solution mainly allows any number of nodes participating in the system to associate and generate a series of data blocks (blocks) using cryptographic methods. Each data block contains all the information exchange data of the system within a certain period of time, and generates The data fingerprint is used to verify the validity of its information and chain to the next database block.
?
In layman’s terms, blockchain technology refers to a way for all people to participate in accounting. Behind all systems there is a database, which is a big ledger. Then who will keep this ledger becomes very important. At present, it is whoever owns the system who keeps the accounts. Each bank’s account books are kept by each bank, and Alipay’s account books are kept by Alibaba. But now in the blockchain system, everyone in the system has the opportunity to participate in accounting. If there are new transaction data changes within a certain period of time, everyone in the system can do accounting. The system will judge the person who has the fastest and best accounting during this period, write the recorded content to the ledger, and Send the contents of the ledger during this period to all users in the systemOthers make backups. In this way, everyone in the system has a complete ledger. Therefore, this data becomes very safe. A tamperer needs to modify more than half of the system node data at the same time to truly tamper with the data. Such tampering would be extremely costly, making it nearly impossible. For example, Bitcoin has been running for more than 7 years. Countless hackers around the world have tried to attack Bitcoin, but so far there have been no transaction errors. It can be considered that the Bitcoin blockchain has been proven to be a safe and reliable system.
?
1.2 Why is there blockchain innovation?
Human beings need to communicate during their activities, and communication is based on information. In the past, information circulation was not convenient enough to satisfy market participants. There is a demand for information, so intermediaries and centers are born. This centralized system has problems such as high cost, low efficiency, value dispersion, "information islands" and insecure data storage. However, due to technical and environmental factors, this system continued to operate for many years until the emergence of the Internet. The starting point of the first generation of the Internet is the TCP/IP protocol, which is an open code that implements a unified format for peer-to-peer transmission of information by all nodes on the network, and brings the basic values of freedom and equality required by a global unified market into programmed, protocol-based, and reliably Execution. The Internet eliminates low-value, high-cost intermediate chains and achieves low-cost and high-efficiency global information transmission in a decentralized manner.
?
However, the first generation of the Internet did not solve the problem of information credibility. Activities that can be decentralized on the Internet must be activities that do not require credit endorsement, and activities that require credit guarantee must be activities involving centralized third-party intermediaries. Therefore, Internet technology that cannot establish global credit has encountered great obstacles in its progress - people cannot participate in any value exchange activities on the Internet in a decentralized manner. To realize value exchange, people still need third-party intermediaries based on credit (such as banks, clearing agencies, exchanges). The global centralized credit system still has problems such as high operating costs, low efficiency, and vulnerability to attacks and damage. For example, each country's legal currency has different credit values and incompatible clearing systems, which adds a lot of cost to global trade.
?
Therefore, what the second generation Internet must break through is: how to establish global credit in a decentralized manner? Let...>>

Question 2: What is blockchain? What does it mean in layman’s terms? What is China’s attitude towards blockchain? What can blockchain do? Blockchain, a great technology that accompanied the birth of Bitcoin, is currently being used in the financial field to significantly reduce transaction costs and improve efficiency, which is enough to excite Wall Street. However, this is just the tip of the iceberg. Its potential applications are very broad and will subvert every aspect of our lives in the future.
Blockchain is an important concept of Bitcoin. It is essentially aA decentralized database that serves as the underlying technology of Bitcoin. One of the most basic characteristics of Bitcoin is decentralization. In recent months, financial giants have gradually begun to pay attention to Bitcoin's technology and used it in non-monetary fields, such as stock trading, election voting, etc. (1) Art Industry
Artists can use blockchain technology to declare ownership and issue numberable, 100% edition works in digital form for any type of artwork. It even includes a marketplace where artists can buy and sell through their website without the need for any intermediary services.
(2), Real estate industry
Use blockchain technology to solve various problems faced by everyone involved in real estate, including the naming process, land registration, agency intermediaries, etc.
(3), Insurance Industry
The financial industry has always been the most sensitive to advanced technology. Traditional banking and securities industry giants have been involved in the booming blockchain venture capital investment since 2014, with total global investment reaching US$1 billion within two years.
(4) P2P wallet
Personal assets can be traded through this P2P wallet in the future without going through any central institution, such as Bitcoin.
Most blockchains are in their infancy, mainly overseas. There are very few good domestic blockchain projects, so it is not recommended for any non-professionals to invest in blockchain projects. If you are very interested in blockchain technology and have a technical or financial background, it is recommended that you consider starting a business in this area. In terms of the blockchain protocol system, the lowest layer is the underlying technology of the blockchain, including the technical protocols of the blockchain, as well as some platform routing and basic algorithms; in the middle layer, some application interfaces and some credentials must be solved Issuance and verification, including some industry platform services, big data analysis, etc. This is a very rough classification, and there should be more detailed classifications; the top ones are some applications of blockchain, including finance Some applications and some applications in other aspects, the Internet of Things and so on.
Introduction to Bubi Blockchain
Bubi Blockchain has been focusing on the research and development and innovation of blockchain technology and products since its establishment. It has a number of core technologies and has achieved substantial results in many aspects. Radical innovation has resulted in a number of core technological achievements, such as: mathematically provable distributed consensus technology, fast large-scale ledger access technology, multi-chain general ledger technology that supports business expansion, and interconnection technology between heterogeneous blockchains. wait. On April 25, "Gege Points" introduced the concept of blockchain into the points system, jointly opened it up with multiple parties, issued and redeemed points, and promoted the circulation of points. Each cooperative institution can jointly participate in transaction verification, ledger storage, and real-time settlement; the third-party payment platform of the enterprise points issuer makes the entry and exit of points more flexible. Bubi has developed its own basic blockchain service platform, which has been applied in equity, supply chain, points, credit and other fields.. Bubi has been committed to building an open value circulation network with decentralized trust as the core, allowing digital assets to flow freely.
A simple understanding of blockchain is a technology at the bottom of Bitcoin, which is also a peer-to-peer electronic cash system that can realize peer-to-peer value delivery. We should distinguish between Bitcoin, Bitcoin blockchain, blockchain and blockchain. Blockchain technology and other concepts. In countries with relatively developed finance in the past, finance and blockchain technology have a long history, and the legislation of digital currencies and blockchain networks is also very important. With the advent of the financial era, large financial institutions are studying blockchain technology. They have their own teams and conceptual technologies. Slowly, banks in various regions are also participating in digital currency discussions. The application and support of this technology are not only that. The influence of blockchain on enterprises is also huge. For larger domestic enterprises, Bubi Blockchain is also used in various equity, supply chain, points and other fields. Major domestic financial institutions and enterprises have taken a fancy to the new industry. value, they have developed their own blockchain platforms, and blockchain has instantly become a new innovative industry in China. In terms of overseas internationalization, the United States has already obtained 15 blockchain patents at the end of last year compared to China. Blockchain financial applications are entering a new stage in an all-round way. Various applications will become more and more in-depth, and related changes will also become more and more profound. It has attracted more and more attention and will form a huge new trend... >>

Question 3: What is blockchain technology? What exactly is blockchain? What is blockchain? 1. Data blockchain is an important concept in the Bitcoin financial system. It records transaction record data on the entire Bitcoin network, and these data are shared by all Bitcoin nodes. Through the data block, we can query each transaction record. A look at the history of Bitcoin transactions. 2. Example: There are three persons A, B, and C. All funds of A and B are kept by C. And every financial transaction must be recorded by C. Now assume that A and B each have 1 million in custody of C. Then: A spends 80,000 yuan to B, then C's account book record will subtract 80,000 yuan from A's name, and add 80,000 yuan to B's name. If B transfers 50,000 yuan to A, C will add 50,000 yuan to A's name and subtract 50,000 yuan to B's name in the account book. A spends 50,000 yuan to B, then C's account book record will subtract 50,000 yuan from A's name, and add 50,000 yuan to B's name. 3. The role of the data blockchain is similar to that of C’s account record book. It records the user’s ownership of Bitcoin and the records of all users’ Bitcoin transactions. It’s just that this “account record book” is recorded by the mining software of every Bitcoin miner on the network. If a Bitcoin transaction is confirmed by the data blockchain, the relevant information will be recorded in the data blockchain. Bitcoin’s “account record book” is called the data blockchain. All data blockchains on the network form Bitcoin’s distributed network database system. 4. The essence of data blockchain technology is decentralized and distributed data storage., transmission and certification methods, using data blocks to replace the current Internet's reliance on central servers, so that all data changes or transaction items are recorded on a cloud system, theoretically achieving self-certification of data in data transmission. In a far-reaching sense, this goes beyond the traditional and conventional information verification paradigm that relies on a center and reduces the cost of establishing global "credit." This point-to-point verification will produce a "basic protocol" that is the basis for distributed artificial intelligence. A new form that will establish a new interface and shared interface between human brain intelligence and machine intelligence.

Question 4: What is blockchain: This explanation of blockchain is more understandable. Blockchain refers to a technology that collectively maintains a reliable database through decentralization and trustlessness. plan.
In layman’s terms, blockchain technology refers to a way for all people to participate in accounting. There is a database behind all systems. You can think of the database as a big ledger. Then who will keep this ledger becomes very important. Currently, whoever owns the system keeps the accounts. Tencent keeps the accounts of WeChat, and Alibaba keeps the accounts of Taobao. But now in the blockchain system, everyone in the system has the opportunity to participate in accounting. If there are any data changes within a certain period of time, everyone in the system can do accounting. The system will judge the person who has the fastest and best accounting during this period, write his recorded content into the ledger, and record this Within a period of time, the contents of the ledger are sent to all other people in the system for backup. In this way, everyone in the system has a complete ledger. In this way, we call it blockchain technology.
Blockchain technology has become the darling of the financial community in China and has become a hot topic. Domestic Puyin Group has launched Puyin, a tea-based digital currency.

Question 5: Explain in an easy-to-understand manner what blockchain is. Blockchain can be understood as a database system in a sense. The development of blockchain can be divided into 1.0 and 2.0
1.0 is represented by Bitcoin, and its main application is virtual currency or digital currency application. The blockchain at this time can only be used for simple digital currency transactions.
2.0 is represented by the now popular ethereum (Ethereum) and the upcoming hyperledger. The blockchain at this stage can not only meet the corresponding digital currency transactions, but also use smart contracts to customize currency or asset transactions. If we use the database analogy, the emergence of smart contracts can be understood as allowing users to define functions or stored procedures in the database and call and execute them.
Different from traditional databases, the blockchain introduces consensus mechanism, incentive mechanism, p2p (network), hash and other specific elements, making it open, decentralized and independent.Tamperable properties.

Question 6: What is blockchain? Can anyone explain it in simple terms? Blockchain is the underlying technology of Bitcoin. It is like a ledger that records all transactions. It is decentralized. What is decentralization? For example, when you buy something on Taobao, you place an order and pay in Alipay. Alipay will not transfer the money to the seller until you receive the goods. Alipay is the third party in that center. Without it, it means decentralization, just like buying things offline. If you pay with one hand and get the goods with the other hand, there is no third party.
The blockchain itself is a series of cryptographically related data blocks generated.
Look carefully to see if it looks like a ledger. The pieces one by one are blocks, and connected together they are the blockchain.
Many companies are developing this technology, including ours, and its prospects are incredible. For details, you can go to our official website and hope to adopt it, thank you

Question 7: What is blockchain technology? What is blockchain? How to explain the concept of blockchain? People in each industry have different understandings, and relevant explanations are gradually emerging due to more and more real-life applications. With the popularization of this blockchain technology, the related results are getting bigger and bigger. If we want to understand this technology, we must have an in-depth understanding of reality.
In the past six months, the concept of blockchain has gradually become popular in China, and a blockchain whirlwind has taken off in the financial circle. Blockchain has attracted the attention and favor of more and more people in the industry due to its unique technical advantages. Blockchain technology, which is decentralized (or multi-centered), highly transparent, cannot be tampered with, and has no single point of failure, is entering the field of vision of financial institutions and enterprises. It has at least been used in digital currency, payment exchange, registration and settlement, Digital assets, traceability and anti-counterfeiting, supply chain, Internet of Things and many other fields have moved from theoretical discussions to practical applications.
"Blockchain" was first introduced with "Bitcoin" released in early 2009. Blockchain has become the basic protocol and technical application for the launch, recording, and circulation of Bitcoin. Although Bitcoin has been controversial since its inception and cannot even be regarded as a "currency" by governments and monetary authorities, the blockchain technology used in Bitcoin has been recognized by governments, including governments and monetary authorities. extensive attention.
Why has blockchain become a rapidly heating up hot technology and topic?
The most important of these may be that the launch of Bitcoin based on blockchain technology has opened up a new relationship with traditional society ( The exploration and attempt of brand-new technologies and rule systems such as Internet user identity verification, wealth confirmation, transaction records, notarization and verification, which have little connection with offline) and are fully applied in the online world (online), provide people with the opportunity to adapt to the Internet society. Development provides alternative paths and unlimited imagination.
Judging from its application in Bitcoin, blockchain is intuitively a combination of encryption technology and the Internet.A new set of network block (BLOCK, also called community) establishment, Bitcoin configuration, netizen identity verification, and Bitcoin (value) confirmation formed by mining, Bitcoin transaction records, and Bitcoin cross-block flow ( Internet protocol rules and accounts including extended encryption of value transfer (adding factors such as block and transaction time identification), registration and verification, block connection (Blockchain), full encryption, mutual authentication, etc. Ledger system. Precisely because Bitcoin is not a substitute for offline legal currency, but is issued and managed by non-legal currency authorities, mainly imitating the model of gold, and is completely new and decentralized protected and supported by basic Internet protocols and strict encryption technology. Internet currency (virtual currency) has thus formed a new set of currency rules and systems that are different from and not subject to real social laws, and can be bought, sold or exchanged with legal currency. It has been more than 8 years since Bitcoin was launched. There has been no record of funds or user information being stolen. Its security has been verified, and its efficiency and cost of fund settlement also have obvious advantages. This has made people's confidence in the blockchain technology used in Bitcoin continue to increase, and people have become more and more aware that although blockchain is a technology and protocol pioneered and applied by Bitcoin, the blockchain Chain is not the same as Bitcoin, and its application is by no means limited to Bitcoin. The application of blockchain can be decentralized or centralized; it can be a public chain model or a private chain model. Therefore, after Bitcoin, blockchain technology is also constantly developing and innovating, and constantly exploring new application fields, especially in the financial field.
The reason why blockchain is valued highly by more and more people is because the development and widespread application of the Internet have caused more and more economic exchanges and transaction activities to be conducted online, and the online world (or online world) society) is rapidly expanding, enriching and active, and online transactions must solve the efficiency and security protection issues of the parties' identity verification, value verification, transaction records, inspection and verification, etc., and require strict intermediaries and agreements (rules or constitutions). In this regard, traditional thinking and customary practices are to follow the development trajectory of the transfer of offline transactions to online and push the common rules and practices of the real (offline) society to the online (network) society. However, in practice, it is increasingly It is difficult to adapt to the needs of online transactions.
For example, for the identity verification of the parties, the natural choice is to use the information on the identity documents protected by the laws of various countries as the basis, and then add account or transaction passwords, as well as facial recognition, iris, fingerprints and other biometrics to conduct online transactions. Verification, but this method first makes the citizen identity information in the cross-border interconnected online world subject to the administrative jurisdiction of real society... >>

Question 8: Easy to understand Explain clearly what is blockchain. The English name of blockchain is Blockchain. Block's wordNian means block, block, and chain means chain, chain. Therefore, together they are translated into blockchain.
1. Use cryptography technology to encrypt and decrypt so that records cannot be tampered with. Common blockchain encryption methods include hash algorithm, RSA algorithm, elliptic curve algorithm, etc.;
2. The huge amount of calculation needs to be supported by a reasonable reward mechanism. Because every transaction must be recorded, Bitcoin’s blockchain has more than 60 gigabytes so far. Every new transaction requires confirmation of the information related to the trading account to ensure that the transaction is valid. The huge amount of calculation requires a computer with powerful computing power to complete.
In order to encourage the participation of powerful computing power, Bitcoin provides two rewards: one is to issue a certain number of Bitcoins to these computers every day; instead, all transfer fees are awarded to these computers. (The technical term for these computers is "mining machines", and the people who hold the mining machines are called "miners".)
Biying China is working hard on the digitization of assets and has launched the digital currency crowdfunding platform Biying China.

Question 9: What is the so-called "blockchain"? Blockchain itself is a tool called decentralization and trustlessness. For example, when you graduate from university, the current practice is to have a certificate recognized and issued by an authoritative agency as your certificate. This setting is more troublesome, because this is a piece of paper, and paper can be forged, so there will be various gaps. The issuing authority is also a person, and there will be various gaps in the middle. As long as it is related to people, whoever There are various possibilities related to media. The blockchain provides a great opportunity. As soon as you graduate, you will have a record on the blockchain. No one can change this record. This thing exists objectively. You, as a physical existence , and then as a data existence, the blockchain was born. In this case, anyone who wants to check where you graduated can easily solve the problem. This is similar to the big data often involved in social networking (WeChat) and payment platforms (Alipay, Yibao).

Question 10: What does blockchain mean? Regarding blockchain, I think you have already seen the concept on the Internet. Let me explain it based on my understanding!
First, let’s talk about its characteristics: 1. Openness and transparency 2. Decentralization 3. Anonymity 4. Information cannot be tampered with, eliminated 5. No trust cost
Blockchain is like a public ledger , everyone has the right to record and read, and everyone will jointly supervise to ensure its accuracy, and the recorded content will be permanently saved, and can only be added but not deleted! However, as the number of blocks continues to increase, costs will increase and efficiency will decrease. (I’m not sure whether technology can be used to make up for this. I hope someone who understands technology can point it out.)
Blockchain is divided into public chain, private chain, and alliance chain. Public chain: everyone canAccess, everyone has read and write permissions, completely open, transparent and decentralized. Private chain: Open to individuals or institutions, in which the owner of the private chain can set various permissions to make it partially centralized. Alliance chain: Open to specific organizations or groups, it is also "partially decentralized". According to the ledger at the beginning, members can view and transact, but cannot record and confirm bills, or require permission from the alliance. (The latter two do not have cost and efficiency issues)
Regarding blockchain, countries have begun to recruit talents in this area. For this, you can search online for "Central Bank Recruiting Digital Currency R&D Personnel". In addition, you can increase your understanding of blockchain by understanding its existing applications. What we usually refer to generally refers to public chains. Currently, those used abroad include Bitcoin, Ethereum and other domestic blockchains. Chain
1. Open and transparent: Every piece of data is verified by everyone and can be viewed by everyone at any time.
2. Decentralization: For example, when we shop on Taobao, we conduct transactions through the intermediary Taobao, and blockchain allows both supply and demand parties to directly contact each other for direct transactions through blockchain technology.
3. Anonymity: No personal privacy information is required to complete transactions on the blockchain, only your unique alphanumeric signature is required.
4. Information cannot be tampered with or deleted: Once the data has been verified and recorded, no one has the authority to modify it, let alone delete it!
5. No trust cost: The trust crisis in reality will not appear in the blockchain. Transactions in the blockchain do not require you to trust the other party. Only when both of you have enough "digital assets" to trade can it be carried out, and Under the supervision of the entire network, transactions will not be broken. If you have no idea about the cost of trust, just think about how many intermediaries there are in your city, or just think about Jack Ma, and you will know how big the cost of trust is.
I am still learning more about blockchain. I am Li Ailin. If you have any questions, you can discuss and learn together!

E. 108 Essential Knowledge Points for Getting Started with Blockchain

Author: Kong Lin

61. Trapped

Expect the currency price to rise, but unexpectedly the currency price falls after buying; or expect the currency price to fall, but unexpectedly the currency price rises after selling

62. Unwinding

After buying Bitcoin, the currency price fell, causing temporary book losses, but then the currency price rebounded and the loss turned into profit

63. Going short

After selling Bitcoin because of the bearish market outlook , but the currency price kept rising, and I failed to buy in time, so I failed to make profits

64. Overbought

The currency price continued to rise to a certain height, and the buyer's power was basically exhausted. , the currency price is about to fall

65. Oversold

The currency price continuesWhen it falls to a certain low, the seller's power is basically exhausted, and the currency price is about to rebound

66. Lure bulls

The currency price has been consolidating for a long time, and the possibility of falling is high, and most short sellers have sold When selling Bitcoin, the short side suddenly pulled up the price of the currency, inducing the long parties to think that the price of the currency will rise and buy one after another. As a result, the short side suppressed the price of the currency and locked up the long parties.

67. Lure shorts

After buying Bitcoin, bulls deliberately suppress the price of the currency, 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. Mainly The difference between the function of digital asset confirmation and transfer and digital currency is that it is unique and indivisible. In essence, it is a unique digital asset.

69. What is the Metaverse

70. What is DeFi

71. Who is Satoshi Nakamoto?

72. Bitcoin is different from Q Coin

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 performsA 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?

75. Blockchain asset over-the-counter trading

76. What is a timestamp?

77. What is a blockchain 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. Soft forks andHard 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

80. USDT against the US dollar

81. Altcoins and alternative coins

82. Three major exchanges

Binance

Okex

Huobi

83. Market software

Mytoken

Non-small account

CMC

84. Information website

Babbitt

Golden Finance

Coin World News

85. Blockchain Browser

BTC

ETH

BCH

LTC

ETC

86. Wallet

Imtoken

Bitpie

87. Decentralized exchange

uniswap

88. NFT exchange

Opensea

Super Rare

89. Ladder

Bring your own, buy a reliable ladder

90. Platform currency

A 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

Based on distributed The currency transaction system of the ledger is 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 to 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 manner. Simply put, an electronic contract is set in advance and once both parties confirm, the contract is automatically executed.

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. (The simple understanding of production relations is the 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 fundamentally 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: Can be circulated globally

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)?

101. What is open source code?

The alphanumeric code is stored on the Internet. Anyone can find out the source code of its design, everyone can participate, can mine it, and it is open to the world.

102. What is anonymous transaction? Private wallet private?

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

106. Who is Kong Lin?

Kong Lin: Digital Currency Value Investor

Investment style: Steady

107. Konglin Investment Strategy

Combining long-term and short-term, focusing on price investment, no contracts, no short-term play

Reasonable layout, scientific operation, steady and conservative, earning Cycle money

108. Konglin?

Welcome currency friends and seek common development

F. Meitu uses facial recognition and artificial intelligence technology to enter the development of blockchain applications

Previously stated With the beautiful picture of the development of artificial intelligence technology, we hope to use facial recognition technology to connect with the currently booming blockchain application market.

Value the market driven by recent blockchain applicationsIn terms of gold content, Meitu earlier announced that it will provide blockchain solutions through its artificial intelligence-driven facial recognition technology, which will use its own technology to create a decentralized, encrypted and secure identity verification pass mechanism "Meitu Intelligent Pass (MIP, MeituIntelligentPassport)" allows users to directly use their personal Facebook as a pass key or personal identity verification for blockchain applications, and can quickly connect to personal data scattered on various service platforms, thereby allowing users to more Quickly access personal information between different application services.

Meitu emphasizes that it has invested in facial recognition technology and artificial intelligence layout for a long time. It has obtained more than 100 image technology patents and accumulated a lot of experience in facial image processing. Its platforms have also attracted a large number of users. Authors and third-party developers will enable Meitu blockchain applications to be more widely deployed.

As the beautiful picture illustrates, using facial recognition technology to compare identities not only allows blockchain data assets to have a more complete connection with real-world users, but also makes it easier for users to Schedule usage data on different service platforms. Through recognition technology that can learn the details of a user's face at any time, Meitu said it will allow users to obtain better privacy protection in blockchain applications.

In addition, by storing information in a decentralized manner, no one can access the information at will, except for the user himself who confirms his identity through facial recognition and obtains access rights, and through zero-knowledge Encryption methods such as Zero-knowledgeproof and Differential Privacy ensure information security while achieving the goals of security isolation and permission classification.