区块链100问全集文字,区块链100问全集观看

关于区块链，最重要的莫过于是关键词：去中心化，智能合约，挖矿。今天，我们就来聊聊这三个关键词，让我们一起看看它们究竟有何神奇！

去中心化：去中心化是区块链技术的核心理念，它指的是没有任何中心化的组织或者实体来控制区块链网络。去中心化的特点是，它可以使网络中的每一个节点都具有相同的权限，而不需要任何中心化组织来控制和管理它。由于没有中心化的机构来控制和管理，去中心化的网络可以更有效地保护用户的隐私，提高网络的安全性，并且更容易实现跨境支付。

智能合约：智能合约是区块链技术的一种重要应用，它是一种用代码来实现合同条款的技术。智能合约可以实现自动执行，不需要任何人工干预，所以它可以被用来执行各种合同，包括金融合同、贸易合同、投票系统等等。智能合约的优势在于它可以更快速、更安全地执行合同，同时还可以降低交易的成本，比如不需要任何中介机构来协助执行合同。

挖矿：挖矿是区块链技术的一种重要应用，它指的是通过使用计算机算力来完成区块链网络上的交易，从而获得一定的报酬。挖矿的过程是一种竞争，谁先完成交易，谁就能获得报酬。挖矿的好处在于，它可以确保区块链网络的安全性，并且可以鼓励更多的人参与其中，进而促进区块链技术的发展。

以上就是关于去中心化，智能合约，挖矿这三个关键词的介绍，希望能够让大家对区块链技术有更深入的了解。

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❶ If college students want to get in touch with blockchain, where is the best place to start?

If you just want to get in touch, then I suggest you use the following method (mainly for novices in non-related majors) Students, excluding friends who are preparing to work in the blockchain industry)

First of all, you pay attention to this issue, which means that you have great curiosity or strong interest in blockchain. Well, I don’t recommend that you go straight to the highly professional “White Paper” because the large number of professional terms and nouns can be overwhelming.

In another way, let’s think from the perspective of young people. Before learning blockchain knowledge, we should start with the most basic understanding.

1. On the DouYin platform with huge traffic, if you enter “blockchain” in the search box, many “famous” teachers will appear to explain to you what blockchain is with vivid and short videos. . Although the video content cannot be said to be 100% correct, it is completely sufficient for a simple basic understanding. After all, "There are a thousand Hamlets in the eyes of a thousand viewers. Everyone will have a different understanding and view of the blockchain, and you will also have a different view in the future.

2. You now You may have a little knowledge of blockchain or just have an outline. So, please take your impression and read "100 Questions on Blockchain" (you can search it directly on the Internet). It is still a very short video, but Basically, blockchain-related knowledge is covered, including cryptography background knowledge, the history of blockchain, what is blockchain, introduction to Bitcoin and Ethereum, application scenarios of blockchain technology, etc.

Note that you don’t need to study every noun in detail, just browse them all and distinguish between those you understand and those you don’t understand.

3. In your spare time, you can read the online novel "Blockchain" "Cultivation of Immortality" is probably a story about a leek soul who obtains the blockchain immortality system after passing through it, cheats on life, and starts with mining. In this novel, you will see a lot of nouns (miners, nodes, digital currency , blockchain system, etc.), bringing the knowledge you have learned previously into the book will have miraculous effects.

Excerpt - "All the heavens and worlds have actually condensed into a huge area. Blockchain... everyone can do it through the blockchain... all it takes is virtual currency. When we use the essence of our mana... to sacrifice to the blockchain... we will get virtual currency, which can replace currency in reality, buy and sell everything, and even use the blockchain to directly practice. From the blockchain to the Internet of Things Obtain elixirs and exercises. ”

After reading this, do you think it is more interesting than the "White Paper"?

4. It is recommended to read "Blockchain 100 Questions" and then read "Bit Coin White Paper".

5. If you are facing an internship, you can go to relevant companies to experience it, and applying what you learn is the best way.

6. Of course, paying attention to Coin Secretary is also NoWrong choice

[See]

❷ Blockchain 100 - Zhou Kaiyu: Blockchain credit reporting innovation, can it break industry credit barriers

Mr. Zhou Kaiyu, CEO of Zhenxing Technology

Currently, credit reporting has become a key part of the credit system and forms an important support in the operation of the modern financial system. There are certain difficulties and pain points in traditional credit reporting, but the decentralized and non-tamperable characteristics of blockchain will change in one fell swoop the issues of insufficient data privacy protection involved in the credit reporting process and consensus trust issues in the data sharing transaction process.

Mr. Zhou Kaiyu elaborated on the advantages of the combination of blockchain and credit reporting, and described the development status of the blockchain credit reporting industry at the legal level. At the same time, he expressed his views on the future development of Zhenxing Technology and the future direction of blockchain innovation.

Zhenxing Technology is positioned as a blockchain value ecological enterprise and is committed to building the next generation of trusted application service basic network based on blockchain. In June 2017, the company established a stable team structure and carried out related technical matters. From July to August, the first version of Zhenxing’s technical white paper was completed. At present, Zhenxing has implemented the first version of the system and has also started to provide related services in terms of blockchain-based identity verification. In the later stage, further development based on the second version of the credit evaluation system will be carried out.

In terms of ecological construction in the future, Mr. Zhou Kaiyu said that the blockchain credit industry has both value and opportunity. He hopes that industry partners with some high-quality resources on the B-side in the early stage can jointly expand services and eventually achieve A large number of users gather on the C-side, creating an ecological environment for high-credit preference transaction customers. In terms of the company's development plan, Zhenxing will break the inherent thinking of traditional blockchain anonymous verification, build a decentralized strong identity verification basic network, and integrate a trusted Internet service ecosystem.

The original intention of choosing a project that combines credit reporting with blockchain

“Choose blockchain to develop because it has a community-based approach that maintains the stability of the entire system. Consensus reward, consensus reward is a process of social value redistribution. In the process of social value redistribution, a value effect is formed in which the wool comes out of the pig and is paid by a third party. While achieving credit value, it can It is a means to encourage everyone to maintain high credit." Mr. Zhou Kaiyu said.

According to Mr. Zhou Kaiyu, in the traditional credit reporting process, data is processed in a traditional centralized way. The data exists on a centralized platform, but it is difficult to verify the security of user data. The issue of personal privacy data has attracted attention from society, government, enterprises and other levels. Blockchain will form a combination with blockchain through the credit alliance.

At the same time, the Block Hall Chain can combine some personal security mechanisms to achieve comprehensive and strict protection and authorization of personal privacy data.Complete the credit reporting service based on the right attributes. Zhenxing’s credit reporting service combines the advantages of blockchain, using personal data and individuals themselves to provide diversified credit reporting services through data services.

What are the advantages of the combination of blockchain and credit reporting?

When it comes to the combination of blockchain and credit reporting, its main core lies in the data level, since credit reporting uses a large amount of user data. In a decentralized system like blockchain, data needs to be maintained jointly by everyone. It is difficult for anyone to change the data. This can clearly ensure the security of user data. Any access to data requires user authorization. occur.

Regarding the current legal status of blockchain credit reporting, Mr. Zhou Kaiyu introduced, “In terms of credit reporting, the country has many management regulations to regulate the processing of customer data by enterprises. Blockchain + reporting In terms of information, it is a very good technical method." In his view, “Blockchain + credit reporting has become the only basic technology that can fully meet all requirements in terms of privacy protection when most technologies cannot meet the needs of credit reporting.”
< br />What are the options for future blockchain innovation directions?

Mr. Zhou Kaiyu said that the development of blockchain is still in an early stage, and there is huge room for future innovation in blockchain. Currently, we are optimistic about the direction of innovation, such as asset digitization. Asset digitization will be a relatively long process, and various applications will continue to emerge during development. In terms of technological innovation, blockchain still has a lot of room, and more attempts are being made in new directions of upgrading and balancing.

Zhenxing hopes to build a value exchange ecology with high performance value, and hopes that under its nourishment, everyone will be happy to maintain their personal credit, and everyone will be able to participate in the credit transaction process. gain from it. The future development of Wuxiaokai will be based on the core concept of maintaining high credibility and combating dishonest people.

❸ 108 knowledge points for getting started with blockchain

1. What is blockchain

Combine the information of multiple transactions and the information indicating the block The information is packaged and put together, and the verified package is the 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, everything will be in 2040The advent of Bitcoin.

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: The right to write and viewOnly 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 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

IdenticalTwo blocks were generated within a certain period of time (the transaction information in the block is the same, but the hash value of the block is different). After that, two chains were forked from these two blocks. Who is linked to these two blocks? The first 6 blocks generated 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 end of the previous block, andDelete the list in the block that is the same as your 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

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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 a number that exists but has not yet been consumed.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 (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, If you think the currency price will fall in the future, sell the currency you hold (or borrow currency from the trading platform). After the currency price drops, buy 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 1 BTC

55. Full position

Buy all the funds into a certain virtual currency at one time

56. Rebound

Currency price When falling, 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 falls slowly

59. Diving (waterfall)

The currency price falls 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 pushed the price of the currency higher.Lure the bulls into thinking that the price of the currency will rise and buy them one after another. As a result, the bears suppress the price of the currency and make the bulls locked up

67. Short-spurring

After the bulls buy Bitcoin, they deliberately Suppressing the currency price makes short sellers think that the currency price 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 digital assets. The difference from digital currency is that , it is 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 established in 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. As the computing power of the entire network increases, the use ofIt is becoming increasingly difficult for traditional equipment (CPU, GPU) to mine bits, 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. Backwards compatibility refers to new softwareThe 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/

Coin World News: http://www.bishijie.com < /p>

85. Blockchain Explorer

BTC: https://btc.com/

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. Ladder

Bring your own, buy a reliable ladder

90. Platform currency

The digital currency issued by the platform is used to deduct handling fees. , trading, 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

Contract represented by Ethereum (smart contract) Blockchain technology 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

< p> 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. Once both parties confirm, The contract executes 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 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: 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?

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?

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 the buyer and the seller to receive payment at a specified price at a certain time in the future.An agreement to trade a certain amount of an asset. 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

❹ 100 Questions on Blockchain (Episodes 1-10)

1. From barter to Bitcoin丨Blockchain 100 Questions Episode 1

2. What is Bitcoin? 100 Questions on Blockchain Episode 2

3. The Birth of the Bitcoin White Paper 100 Questions on Blockchain Episode 3

4. The Birth of the First Bitcoin Blockchain 100 Questions Episode 4

5. Who is Satoshi Nakamoto? Blockchain 100 Questions Episode 5

6. What are cypherpunks? Blockchain 100 Questions Episode 6

7. How is Bitcoin issued? Blockchain 100 Questions Episode 7

8. Blockchain 100 Questions Episode 8: What kind of pizza actually sold for 300 million yuan?

9. Blockchain 100 Questions Episode 9: Satoshi Nakamoto’s successor Gavin Andreessen

10. Blockchain 100 Questions Episode 10 ：Bitcoin Faucet

11. Blockchain 100 Questions Episode 11: Why hasn’t Bitcoin been mined yet?

12. Blockchain 100 Questions Episode 12: How does Bitcoin achieve a constant total supply?

❺ A beginner’s guide to investing in digital currency (blockchain), just read this article

Compared with other investment methods, the entry threshold for blockchain and digital currency investment is relatively high, and there are many Friends all want to invest in digital currencies but don’t know where to start or what to learn. Although 51 coins are said to be in the "newA lot of relevant knowledge has been updated in the "Hand Play Coin" section, but it is not systematic enough

This time we will systematically organize and summarize the information related to blockchain and digital currency investment to make it faster for everyone. , understand and invest in digital currency more conveniently

1. Understand blockchain and digital currency

No matter what you invest in, you must understand it, blockchain and digital currency The same is true. There are many introductions about blockchain on the Internet, some are too profound, and some are not comprehensive enough. I personally think the video "100 Questions about Blockchain" produced by Huobi is better.

100 videos, all related to blockchain knowledge, including: the birth of Bitcoin, operating principles, blockchain FAQs, mining, wallet introduction, etc., and they are all in the form of animated videos, making it easier for everyone to understand. Although It is not detailed enough, but it can give you a preliminary understanding of digital currency and blockchain

2. Choose a trading platform

After you have an understanding of digital currency, you can try to buy a small amount on the trading platform Digital currency, experience the process. The buying and selling of digital currency must be completed through the trading platform, which is equivalent to the stock exchange of the stock market. It is recommended to choose a large trading platform for the trading platform, which has a comprehensive range of currencies, convenient transactions, and guaranteed fund security

Recommend the following three platforms: Binance, Huobi, OKEX (in no particular order)

3. Choose a wallet

If you compare digital currency to cash, wallet It is equivalent to a bank card and is used to store digital currencies. There are many types of wallets, and the most commonly used ones now are mobile APP wallets (light wallets). Wallets are also divided into types. Different and similar digital currencies cannot be transferred to the same wallet, such as: imtoken is an Ethereum wallet, so it can only store Ethereum and tokens issued based on Ethereum, but not other currencies

There are also wallets that claim to support all digital currencies, but most of these wallets do not. Perfect.

Of course, after we purchase digital currency, we don’t need to deposit it in the wallet, but directly put it in the exchange account, which saves handling fees and is not that troublesome. Large exchanges such as Huobi and OKEX have It is relatively safe. I personally basically put digital currencies on exchanges

4. Determine the investment plan

Before investing in digital currencies, we must first determine our investment plan. How much money do you plan to invest, how much loss can you accept, what is the expected return, and how long is the investment time limit? Once you have determined it, you can invest. Digital currency is a high-risk, high-yield investment product. In the novice stage, you should invest your spare money that will not affect your life. Yes, there is no limit on the amount of investment, and the minimum amount is a few hundred yuan.

You can increase the investment amount appropriately after you truly understand the market, but you must also remember to control the investment amount within your own tolerance.

< p> 5. Select investment currency

After choosing a trading platform and determining an investment plan, you can purchase digital currencies. So which one should we buy among so many digital currencies? When buying coins for the first time, it is recommended to choose mainstream coins. You can choose a few coins that you like among the top 20 in the market or recognized value coins

Find out what these coins are for and whether they are available What is the actual value, what news has recently affected the currency price trend, etc.

Understand these issues before buying, and be sure to pay attention to the purchase price before buying

6. Common tools, Website

1. Non-small account: You can view information related to each currency and exchange, including currency price, historical price, increase and decrease, circulation volume, ranking and other information

2 , AICoin: The function is similar to that of non-small accounts. The K-line of aicoin is very convenient and easy to use. It is the first choice for watching K-line charts

3. Coin World: Real-time updates of news and information related to various blockchains and digital currencies

4. Golden Finance: A relatively comprehensive blockchain media platform, including news, news, quotes, celebrity columns, etc.

7. Learn more relevant knowledge

< p> With the above 6 points as a basis, even if we have initially learned about digital currency investment, we still need to learn more knowledge if we want to truly make money by investing in digital currencies. The two most important points are to deepen the understanding of the blockchain and technical analysis (K line)

These two are too broad and cannot be learned overnight, so I will not introduce them, K You can find a lot of online knowledge online. As we invest longer, understand more currencies, and come into contact with more related matters, we will gradually deepen our understanding of blockchain.

❻ Blockchain 100 Questions: District What information does the blockchain record?

The blockchain is the large ledger of the Bitcoin network, and each block is equivalent to a page in the ledger. So what information is recorded in the "account book

"? Currently, each block of Bitcoin mainly records data such as block header, transaction details, transaction counter, and block size.

The "block header" contains all information except transaction information, mainly including the hash value of the previous block header:

Used to ensure that blocks are concatenated in order ; Timestamp: records the generation time of the block; random number: the answer to the arithmetic problem of the entire network mine

; Difficulty target: the difficulty coefficient score of the arithmetic problem.

"Transaction Details" records in detail the transferor, incomer, amount and digital signature of the transferor

of each transaction, which is the name of each transaction in each block. main content.

The "transaction counter" represents the number of transactions contained in each block.

"Block size" indicates the size of each block data. Currently, each block is limited to 1MB, and the possibility of expansion in the future cannot be ruled out

.

❼ Getting Started with Blockchain What You Need to Know!

What is a blockchain?
Literally: a blockchain is a chain composed of small blocks that record various information, similar to what we will Bricks are stacked one after another, and they cannot be removed after being stacked. Each brick also has various information written on it, including: who stacked it, when it was stacked, what material the brick was made of, etc. You can use this information There is no way to modify it.
From a computer perspective: Blockchain is a relatively special distributed database. A distributed database stores data information on each computer separately, and the stored information is consistent. If one or two computers in Taiwan are broken, the information will not be lost, and you can still view it on other computers.
Blockchain is distributed, so it has no central point. Information is stored in all nodes that join the blockchain network, and the data of the nodes is synchronized. A node can be a server, laptop, mobile phone, etc.
What you need to know is that the data stored in these nodes are exactly the same.
Blockchain Features
Decentralization: Because it is distributed storage, there is no central point. It can also be said that each node is a central point. Applications in life do not require a third-party system (bank , Alipay, real estate agencies, etc. are all third parties).
Openness: The system data of the blockchain is open and transparent, and everyone can participate. For example, when renting a house, you can know the previous rental information of the house and whether there have been any problems. Of course, some individuals here Private information is encrypted.
Autonomy: The blockchain adopts consensus-based specifications and protocols (such as a set of open and transparent algorithms), and then each node operates according to this specification, so that everything is done by machines and there is no human touch. Element. This changes trust in people to trust in machines, and any human intervention has no effect.
Information cannot be tampered with: If the information is stored in the blockchain, it will be saved permanently and there is no way to change it. As for the 51% attack, it is basically impossible to achieve.
Anonymity: There is no personal information on the blockchain, because it is all encrypted and is a string of letters and numbers, so your ID card information and phone number will not be resold. Phenomenon.
Block structure
A block contains two parts:
1. Block header (Head): records meta-information of the current block
2. Block body (Body): actual data
>Contains data as shown below:
How blockchain works
Let’s take transfer as an example:
Currently our transfers are centralized, and the bank is a centralized ledger. For example, there is 400 in account A Yuan, Account BThere are 100 yuan in the account.
When A wants to transfer 100 yuan to B, A needs to submit a transfer application through the bank. After the bank verification is passed, 100 yuan will be deducted from A's account and 100 yuan will be added to B's account.
After calculation, the balance of account A after deducting 100 is 300 yuan, and the balance of account B after adding 100 is 200 yuan.
The steps for transferring money on the blockchain are: A wants to transfer 100 yuan to B. A will tell everyone about the transfer on the Internet, and everyone will check whether there is enough money in A's account. To complete the transfer, if the verification is passed, everyone will record this information in the blockchain on their computers, and the information recorded by everyone will be synchronized and consistent, so that A will successfully transfer 100 yuan to on B’s account. You can see that there is no bank involved.
Related questions
What is the relationship between blockchain and Bitcoin?
Bitcoin was proposed by Satoshi Nakamoto in 2009, and then the blockchain technology was refined with reference to the implementation of Bitcoin.
If Bitcoin is noodles, then blockchain is flour. Later, everyone discovered that flour can be used to make steamed buns and steamed buns in addition to noodles.
Why do I need to help you store block information?
I don’t have time to do it without profit. To put it simply, you help me store information and I will give you corresponding rewards.
Key technical points that need to be understood in blockchain?
Use Hash and asymmetric encryption to ensure that data cannot be tampered with:
Hash: y = hash(x), perform a hash operation on x to obtain y , the original information x can be hidden, because you cannot calculate x through y, thus achieving anonymity.
Asymmetric encryption: The public key and the private key are a pair. If the public key is used to encrypt the data, only the corresponding private key can be used to decrypt it; if the private key is used to encrypt the data, then only It can be decrypted with the corresponding public key.
Consensus algorithm: Ensure data consistency between nodes.
Is there a sentence or two that can explain the blockchain?
Yes.
Mahjong is a traditional Chinese blockchain project. A group of four miners work together. The miner who first collides with the correct hash value of 13 numbers can obtain the accounting rights and be rewarded.

❽ Super detailed compilation of blockchain and cryptocurrency industry terms (recommended collection)

Bitcoin Glossary: ​​Every blockchain and cryptocurrency you need to know Phrases

Despite the odds, blockchain technology has become mainstream. Bitcoin has become a household word, with financial institutions around the world investing in the cryptocurrency or allowing their clients to do so. At the same time, NFT has attracted the participation and appreciation of celebrities from all walks of life.

But despite this, blockchain technology remains very mysterious. Only talented engineers can truly understand these -Many of these people are early adopters of cryptocurrencies like Bitcoin and Ethereum, which can still be difficult for the uninitiated.

Below is a glossary of blockchain terms you may find useful. (All phrases in alphabetical order)

Airdrop

An airdrop is when a company drops a cryptocurrency or NFT directly into your wallet. Instead of an IPO, the blockchain service will launch tokens and airdrop them to users who have used the service. There are several reasons for this: it could be pure marketing, as the airdrop raises awareness of the tokens people can invest in, or it could provide governance tokens for the DAO.

A recent example: the Ethereum Name Service allows users to change their wallet number to a wallet name (such as CNET.eth). Last December, it launched its own ENS token, airdropping a certain amount to everyone who uses the service. The more people use the Ethereum name service, the more tokens they get airdropped — worth tens of thousands of dollars in some cases.

Altcoin

Any cryptocurrency that is not Bitcoin or Ethereum is called an Altcoin. Sometimes called "shitcoins."

Binance

The world's largest cryptocurrency exchange, where people buy and trade cryptocurrencies. It is under investigation by the U.S. Department of Justice and the Internal Revenue Service for tax evasion and money laundering.

Blockchain

Blockchain is a "distributed database". Simply put, it is a decentralized ledger that records information in digital “blocks.” Once a block is mined and added to the chain, it cannot be changed, so the blockchain provides a public record of unchangeable data.

There are many different blockchains with varying degrees of decentralization, efficiency, and security. Many people have their own cryptocurrencies - for example, Ethereum is a cryptocurrency built on the Ethereum blockchain.

Bitcoin

Bitcoin is the first cryptocurrency, built on the Bitcoin blockchain. It was created in 2009 by a person or group of people under the pseudonym Satoshi Nakamoto. Only 21 million pieces can be minted, of which approximately 18.9 million are already in circulation.

Burning

Cryptocurrency is issued byIt was sent to a wallet that could only receive but not send and was "burned". Burning mechanisms are often used to create a deflationary effect: the fewer tokens in circulation, the scarcer the tokens held by investors.

Buy the dip

This refers to buying more of an asset after its price has fallen. For example, if the price drops by $10,000, a Bitcoin holder might “buy the dip.”

Cold Wallet

A cryptocurrency wallet that is not connected to the Internet. These wallets are safer and less susceptible to scams.

Cross-chain

The ability to send data, tokens or assets from one blockchain to another. This is different from “multi-chain” services that are built to work on multiple blockchains.

Cryptography

A form of information encryption in which data can only be decrypted using a key. Blockchains using a proof-of-work protocol rely on solving extremely complex cryptographic puzzles in order to mine and verify new blocks.

Cryptocurrency

Cryptocurrency is a token native to the blockchain. Cryptocurrencies are typically minted with each new block mined. For example, every time a new Ethereum block is mined, two Ether coins will be obtained as compensation for the miners.

A cryptocurrency is a token. Their birth is their defining factor: other tokens are created using platforms and applications built on top of the blockchain, while cryptocurrencies are built into the blockchain’s protocol.

Decentralized Applications (Dapps)

Abbreviation for Decentralized Applications.

Dao (DAO)

A decentralized autonomous organization. The DAO is an organization that makes decisions through consensus: all holders of governance tokens receive voting rights in organizational decisions, and the solution with the most votes is the DAO's action plan. Imagine a decentralized investment bank, but instead of fund managers making investment decisions, holders of their governance tokens vote on how to invest the funds in their treasury.

Decentralized exchange

Decentralized exchanges are used to buy and trade cryptocurrencies. interact with typicalUnlike exchanges, these exchanges use peer-to-peer trading that bypasses any centralized authority. These include Uniswap and Sushiswap.

Decentralized Finance (DeFi)

Abbreviation of "decentralized finance". DeFi is any financial instrument that uses blockchain technology to bypass centralized institutions, such as smart contracts or DAOs.

Diamond Hands

A diamond hand is a person who holds financial assets for the long term or during periods of price volatility.

DYOR

Abbreviation for "Do Your Own Research".

Ethereum (ETH)

A cryptocurrency mined on the Ethereum blockchain. Ethereum has a market capitalization second only to Bitcoin, but is a more commonly used cryptocurrency. Most altcoins are also built on Ethereum and are therefore pegged to Ethereum. Most NFTs are also built on Ethereum, which is why Ether is the primary token used in NFT transactions.

Ethereum

A blockchain that competes with Bitcoin. It aims to take the blockchain technology pioneered by Bitcoin developers and use it for more complex financial instruments such as smart contracts.

Flash loan

Flash loan is a DeFi tool that allows loans to be made without collateral. Flash loans allow you to borrow money to buy an asset, but only if you can buy the asset and repay the interest within the same block. Imagine using a loan to purchase a $1 million house, but the loan will only be approved if you have lined up another buyer who is willing to pay enough for you to repay the loan plus interest.

These loans use smart contract technology.

FUD

Abbreviation for "fear, uncertainty and doubt". This could be legitimate, such as people expressing concerns about the safety or legality or safety of a token or NFT project, such as an organized move to encourage people to sell, lowering the price of an asset.

Gas

Gas is the price you pay to use the Ethereum network. Each transaction requires gas paymentfee, depending on how overloaded the blockchain is. Prices typically range from $50 to $500 per transaction, but prices can spike when the network is under heavy load.

Governance token

Governance tokens are cryptocurrencies that give their owners voting rights on a given project. See also: DAO.

GWEI

The cost of gas is expressed in GWEI. As a rough guide, when gwei is below 50, gas will be cheap, and when gwei is above 100, gas will be expensive.

HODL

An intentional misspelling of "hold" used to encourage people to hold their coins during price drops.

Layer 1 and Layer 2

If you dabble in cryptocurrency, you will have heard of Layer 1 and Layer 2 solutions. Layer 1 is the blockchain architecture itself, while Layer 2 refers to the architecture built on top of the blockchain.

For example, take the high gas cost problem of Ethereum as an example. Layer 1 solutions are to make the Ethereum blockchain more efficient, for example by adopting a proof-of-stake protocol. An example of a Layer 2 solution is Immutible X, an exchange built on Ethereum that uses smart contract technology to allow gas-free, carbon-neutral trading.

Liquid Market

A liquid market is a market with a large number of buyers and sellers, which allows buy and sell orders to be completed almost immediately. Cryptocurrency markets are liquid, NFT markets are not. Most legal cryptocurrencies can be bought and sold at any time, as NFT traders are required to list items for sale in the hope that buyers will purchase them manually.

Mainnet

A blockchain protocol for public use will be put into the mainnet. This distinguishes it from a testnet, which is more like a beta release of a blockchain protocol.

Memecoins

Many cryptocurrencies are designed to provide utility or services. Memecoins offer no practical prospects and exist purely as speculative assets. Dogecoin is the most well-known, but there are many, many more.

Metamask (MetaMask)

A browser-based online digital wallet mainly used for transactions on the Ethereum blockchain.

Mining

Mining is the process of verifying transactions and adding blocks to the blockchain. This usually involves powerful computers solving complex password problems. Crucially, this is also how new cryptocurrencies are added into circulation.

Mining Rig

A powerful computer set up for the specific purpose of mining cryptocurrency.

Mining Farm

A warehouse (or room) of mining equipment that operates around the clock and is used to mine cryptocurrency.

Mint

On the blockchain, minting means verifying information and making it a block on the blockchain.

To "mint" an NFT means to purchase it from its creator during a public sale. The "mint price" is the price at which its creator sells it - for example the "mint price" of Bored Ape Yacht Club is 0.08 Ether. After all NFTs in a collection have been minted, traders who want exposure to the collection need to purchase them from a secondary market like OpenSea.

Multi-chain

Applications or services designed to work with multiple blockchains. This is different from cross-chain applications and services, which are designed to send data or assets from one blockchain to another.

MOON

A sharp surge in price is called "mooning" or "a moon". "To the moon" is a common phrase.

NFT

Non-fungible token. These are digital contracts that prove ownership of digital assets. Currently, they are associated with art, but NFTs can prove ownership of any number.

Off-Chain/On-chain

On-chain refers to things that exist on the blockchain, and off-chain refers to things that exist on the blockchain something other than something. Cryptocurrencies are on-chain currencies, and fiat currencies are off-chain currencies.

OpenSea

It is the largest NFT marketplace, specializing in Ethereum-based NFTs. (NFTs built on different blockchains are often sold on specialized marketplaces. For example, Solana NFTs are sold on Solanat.)

Play to Earn (P2E)

Play to Earn (P2E) games integrate blockchain and reward players with in-game cryptocurrency. Cryptocurrencies in these games can be exchanged for Bitcoin or Ethereum. The most prominent example is Axie Infinity, where players can earn Smooth Love Potion ($SLP).

Proof of Work

Proof of Work (POW) is a consensus mechanism by which blocks are added to the blockchain. Proof-of-work requires miners to solve complex cryptographic puzzles, which require large amounts of energy from powerful mining equipment, in order to verify new blockchain transactions.

Proof-of-work is a secure and decentralized consensus mechanism, but it is notoriously inefficient. This is how the Bitcoin and Ethereum blockchains work, although Ethereum will soon move to a more efficient Proof of Stake.

Proof of Stake

Faced with the huge energy demand of proof of work, Proof of Stake (POS) is a newer consensus mechanism that can mine areas more effectively. piece. Proof of Stake allows cryptocurrency holders to validate new blocks on the relevant blockchain.

They do this by staking their cryptocurrency. Network users stake their cryptocurrency, and if their stake is selected via a random algorithm, they have the opportunity to validate a new block – for which they are rewarded in the form of more cryptocurrency. The more cryptocurrencies are staked, the greater the chance that users will be selected to validate new blocks.

Proof-of-work rewards those who expend the most computing power to solve cryptographic puzzles, while proof-of-stake rewards those who have invested in the cryptocurrency for the long term.

Pump and dump (Pump and mp)

Pump and dump schemes involve artificial incentives for a product, causing people to buy it and raising its price. The pump-and-dump coordinators then sell their assets at inflated prices, causing prices to fall sharply.

These exist in traditional markets but are more common in cryptocurrency trading becauseThe low liquidity of micro-cap cryptocurrencies makes their prices easier to manipulate.

Rug pull

A rug pull is when the creator of a cryptocurrency disappears, taking the funds with them. A recent example is the counterfeit Squid Game coins, although these coins are far from rare. “Carpet” is essentially shorthand for “scam.”

Satoshi Nakamoto

A pseudonym for the creator of Bitcoin. The white paper explaining the need for decentralized finance and explaining how Bitcoin works was signed by Satoshi Nakamoto, but no one knows who the real person was. It is speculated that Satoshi Nakamoto was actually several people.

Seed Phrase

When you create a cryptocurrency wallet, you are given a 12-word seed phrase . Every time you log into your wallet on a new device, you will need to use a mnemonic phrase. Never give your mnemonic phrase to anyone.

Sharding

Sharding distributes the network load on the blockchain, allowing more transactions to be processed per second. This sounds boring, but it's very important. Ethereum will integrate sharding next year, which will make using it cheaper and less damaging to the environment.

Shitcoin

Shitcoin is an altcoin that provides no utility, whether it is a memecoin or a void altcoin.

Silk Road

Silk Road was an online black market that was shut down by the FBI in 2013. This is where many people are first exposed to cryptocurrency, as Bitcoin is a popular payment method for illegal goods on the site.

Smart contract

A smart contract is a digital contract that executes itself when required conditions are met. For example, if Wallet X sends 0.08 ether to Wallet Y, Wallet Y sends NFT Z to Wallet X. They are most commonly used for automated trading, but can also be used for more complex purposes, such as quick loans.

Stable coin

Stablecoin is a cryptocurrency pegged to the US dollar. These include Tether andUSDC. Their purpose is to allow cryptocurrency traders to keep their coins within the crypto ecosystem without experiencing the volatility of Bitcoin and Ethereum price fluctuations.

Staking

Equity staking is to lock the funds held in the cryptocurrency wallet to support the operation of the blockchain network. Essentially, it involves locking up cryptocurrency to earn rewards. In most cases, the process requires users to participate in blockchain activities using a personal crypto wallet.

The concept of equity staking is closely related to the Proof of Stake (PoS) mechanism. It is used in many other blockchain systems based on PoS or similar.

TLT

Abbreviation for "think long term".

Token

Tokens are various forms of blockchain assets. A cryptocurrency like Bitcoin is a type of token. Other types include governance tokens , which grant holders voting rights in a DAO or service, or utility tokens , which grant access to services based on the number of tokens held.

TXN

Abbreviation for transaction.

Utility Token

A token designed to provide a certain function. These can be access to applications, services or games. Examples include Filecoin, which grants access to blockchain-based digital storage, and Link, which connects smart contracts for off-chain type data.

Vanity Address

Personalized wallet addresses provided by companies such as Ethereum Name Service. It allows you to change your wallet address to a word or phrase of your choice, such as CNET.eth.

Vaporware

Products that were promised but never actually made it to market. The term became popular in the late 1990s with the original dot-com boom and has seen a revival thanks to shady cryptocurrency creators.

Vitalik Buterin

The creator behind the Ethereum blockchain.

Wallet

A cryptocurrency wallet is a place where you can store cryptocurrencies and NFT place. These wallets can be hot or cold wallets – i.e. browser wallets connected to the internet or physical hardware not connected to the internet. Wallets are read-write, which means they can receive information as well as signatures or online IDs.

Web 3

Web3 is the next iteration of the Internet imagined by blockchain enthusiasts. From the invention of the Internet until around 2005, Web1 was the read-only Internet. Web2 refers to the emergence of users being able to produce content and upload it to the Internet. Web3 will be an Internet integrated with blockchain. Imagine owning your social media posts as NFTs, using a cryptocurrency like Ethereum as a universal currency, and having your wallet as a form of ID rather than an email/password combination.

Whale

A person who holds a large amount of cryptocurrency.

Whitelist

Pre-sale list of cryptocurrencies and NFTs. Whitelisted investors can purchase assets ahead of a public offering, sometimes at a discount.

WAGMI

Abbreviation for "we're all going to make it".

❾ Give an example of what is blockchain

Question 1: 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 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 contained data in a distributed structure. The method of storage, transmission and certification uses 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. , far-reachingly speaking, 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 of distributed artificial intelligence A new form of , will establish a new interface and shared interface between human brain intelligence and machine intelligence.

Question 2: What is the transaction process of the blockchain? It is best to give an example for 20 points. , Definition
Blockchain is like an open network ledger. It originated from Bitcoin and is the underlying technology of Bitcoin. In Bitcoin transactions, all the information of the transaction records will be packaged into a " Stored in "Blocks". With the expansion of information exchange, blocks are linked to each other, forming a blockchain.
2. Characteristics
Digital currency represented by Bitcoin It is a peer-to-peer electronic cash system. Each transaction is broadcast to all participants in the network and is recorded in the ledger after multiple confirmations. This ledger is the "blockchain". Each transaction Participants will have their own ledgers. In this way, when false information occurs, it can be debunked through mutual verification, thereby ensuring network security.
In the blockchain, every node is equal and does not exist Centralized management organization, this "decentralized" feature makes the blockchain do not need to rely on a third party, its operation does not require any human intervention, and can independently conduct self-verification. In addition, the blockchain network is open to the world , 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, you can send money to the world anytime and anywhere, thus eliminating a lot of middlemen links and high handling fees.

Question 3: What is blockchain? What does it mean in popular terms? What is China’s attitude towards blockchain? What can blockchain do? Blockchain (BlockChain) This great technology that accompanied the birth of Bitcoin is currently 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, and its potential application prospects are very broad. In the future, subvert our livesIn every aspect.
Blockchain is an important concept of Bitcoin. It is essentially a decentralized database and 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. BubikaiIt 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 is attracting more and more attention and will form a huge new trend... >>

Question 4: 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 can beThe possibility is that Bitcoin, launched on the basis of blockchain technology, has opened up a kind of Internet user identity verification, wealth confirmation, and transaction records that has little connection with traditional society (offline) and is fully applicable to the online world (online). , notarization and verification, and other new technologies and rule systems, which provide people with optional paths and unlimited imagination to adapt to the development of the Internet society.
Judging from its application in Bitcoin, blockchain is a set of new network blocks (BLOCK, also called communities) formed by combining encryption technology with the Internet. Bitcoin configuration, netizen identity verification, and Bitcoin (value) confirmation formed by mining, Bitcoin transaction records, and extended encryption of Bitcoin cross-block flow (value transfer) (added block and transaction time identification, etc. Internet protocol rules and accounting (Ledger) system including block chain, full encryption, mutual authentication, etc., including factor) registration and verification. 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 party identity verification, the natural choice is to use the laws of each countryBased on the information on legally protected identity documents, account or transaction passwords, as well as facial recognition, iris, fingerprint and other biometrics are added to conduct identity verification for online transactions. However, this method first makes cross-border interconnected networks The world's citizen identity information is restricted by the administrative jurisdiction of real society... >>

Question 5: 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 6: What is blockchain? Can you explain the principle of 10-point blockchain in plain language: decentralized distributed accounting system
Blockchain The core of the technology is that all currently participating nodes jointly maintain transactions and databases. It makes transactions based on cryptographic principles rather than trust, so that any two parties who reach an agreement can directly conduct payment transactions without the participation of a third party.
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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 pass a string ofUse cryptographic methods to associate data blocks (blocks). Each data block contains all information exchange data of the system within a certain period of time, and a data fingerprint is generated to verify the validity of its information and link (chain) the next Database blocks.
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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 other people in the system for backup. 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.
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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.
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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). Global centralized credit bodyThe 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.
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Therefore, what the second generation Internet must break through is: how to establish global credit in a decentralized manner? Let...>>

Question 7: Explain clearly what is blockchain in an easy-to-understand manner. The English name for blockchain is Blockchain. Block literally 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 8: What is blockchain? Blockchain is a new application model of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system.
In May 2016, the Currency Blockchain Research Center published the first book in China that introduces blockchain in simple terms, "Blockchain: Defining a New Pattern of Future Finance and Economics." It introduces the impact of blockchain technology on future finance and economy

Question 9: What is blockchain? For the time being, this is a relatively high-end technology. It connects all nodes (which can be understood as servers) through p2p network technology. Complete data (blocks) are stored on each node. The addition and withdrawal of any node will not affect the normal operation of the chain. Data is embodied in the form of data blocks. Blocks are connected to each other and can be understood as a one-way linked list. The hash value of the nth block is generated based on the hash of the n-1th block, the transaction recorded in the current block, and the random number as parameters. In this way, if you want to modify the data of the historical block, you have to modify all the blocks from the modified block to the final block.. The difficulty can be imagined.
The blockchain also introduces a consensus mechanism and an incentive mechanism. There is no way to describe it too comprehensively here. I hope everyone can discuss and learn together

Question 10: What is blockchain: This explanation of blockchain is more understandable. Blockchain (Blockchain) refers to the method of decentralization and trustlessness. A technical solution for collectively maintaining a reliable database.
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.

❿ 108 essential knowledge points for getting started with blockchain

Author: Kong Lin

61. Hold on

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 a temporary book loss, but the currency price rebounded later and the loss turned into profit

63. Going short

After selling Bitcoin because of the bearish market outlook, However, the currency price continued to rise, 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 continues to fall to a certain low, the seller's power is basically exhausted, and the currency price is about to rise

66. Lure bulls

The currency price has been consolidating for a long time and is more likely to fall. Most short sellers have sold Bitcoin. Suddenly the short sellers pull up the currency price, inducing many parties to think that the currency price will rise and buy one after another. After the bulls bought Bitcoin, they deliberately suppressed the price of the currency, making the short sellers think that the price of the currency would fall. , were thrown out one after another, and ended up falling 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 a An indivisible copyright certificate on the blockchain, it is mainly used to confirm and transfer the rights of 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 established in 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. 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: resourcesTokenization of assets.

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

CMC

84. Information website

Babbitt

Golden Finance

Coin World News

85. Blockchain Browser

BTC

ETH

< p> BCH

LTC

ETC

86. Wallet

Imtoken

Bitpie

87. Decentralized exchange

uniswap

88. NFT exchange

Opensea< /p>

Super Rare

89. Ladder

Bring your own, buy a reliable ladder

90. Platform currency

The digital currency issued by the platform is used to deduct handling fees, transactions, etc.

91. Bull market, bear market

Bull market: rising market

Bear market: falling market< /p>

92. Blockchain 1.0

A currency trading system based on distributed ledgers, represented by Bitcoin

93. Blockchain2.0

The contract blockchain technology represented by Ethereum (smart contract) is 2.0

94. Blockchain 3.0

In the era of intelligent Internet of Things, beyond In the financial field, it provides decentralized solutions for various industries

95. Smart Contract

Smart Contract is an information-based contract designed to spread, verify or Computer protocol for contract execution. Simply put, the electronic contract is set in advance. 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: 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. Although the difficulty of excavation and mining changes in time, the longer the time, the more difficult it is to mine.The larger the number, the fewer coins will be minted, so it is scarce.

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?

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 Kong Lin?

Kong Lin: Digital Currency Value Investor

Investment style: Steady

p>

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