区块链交易课堂心得体会,区块链课程视频教程

本文将介绍区块链交易课堂心得体会、区块链课程视频教程拓展的三个关键词：区块链技术、比特币和智能合约。

区块链技术是一种分布式数据存储技术，它可以让用户在无需中介的情况下进行安全的数字交易。区块链技术是一种分布式账本技术，它可以让每个人都可以参与其中，这样就不会有任何一方控制所有的资源。它还可以提供安全性和可信度，以及可验证性，因此被广泛用于金融、电子商务、政府、医疗保健等领域。

比特币是一种基于区块链技术的数字货币，它是一种去中心化的货币，无需任何中央机构的支持，也不受任何国家的管制。比特币可以用来购买和出售商品和服务，也可以用来投资。比特币的特点是安全性高，交易速度快，手续费低，还可以免受汇率波动的影响。

智能合约是一种基于区块链技术的自动执行协议，它可以帮助用户实现自动化交易。智能合约可以帮助用户实现自动化的交易，从而提高交易效率，减少交易成本，提高交易安全性。智能合约可以帮助用户实现自动化的交易，从而提高交易效率，减少交易成本，提高交易安全性。智能合约还可以帮助用户实现自动化的交易，从而提高交易效率，减少交易成本，提高交易安全性。

总之，区块链技术、比特币和智能合约是区块链交易课堂心得体会和区块链课程视频教程拓展的三个重要关键词。它们的出现改变了我们的生活方式，让我们的交易更加安全、快捷、便捷。

请查看相关英文文档

㈠ How to systematically learn blockchain technology

When you first learn blockchain-related knowledge by yourself, you can use the "bottom-up" method, that is, through Read books, read white papers, etc., check the information yourself, and then summarize and connect the knowledge yourself to integrate it into a relatively complete knowledge system.

1. Study White Paper

Before going to college, I read many books about "The Analects", all about how to read the Analects and how to understand the interpretation of the Analects. Until one day I discovered that I, who loved "The Analects of Confucius" so much, had never had the patience to read the original version of "The Analects of Confucius" seriously.

So, I went to the bookstore and bought back a copy of "The Analects of Confucius" and read it carefully from beginning to end. I found that there were actually too many details and insights in it that could not be conveyed through any interpretation. . But I actually spent a lot of time and read a lot of interpretations before. I was really trying to ignore the essentials and focus on the essentials.

It’s the same in every field. When you don't understand it, you will have an inexplicable fear of it, thinking that it is high and unattainable. In order to quickly enter these fields, you will look for many so-called "interpretations" and inquire about many "news" around them.

2. Technical perspective

Basic stage:

1. "Blockchain Development Guide" - Author Shentu Qingchun:

Author The research on the underlying layers of redundant Bitcoin can be said to be very in-depth, and the explanations are also very easy to understand.

2. "Blockchain Technology Guide" - Author Zou Jun:

As the first domestic book to explain blockchain from a technical perspective, it is worth reading. It was published in 2016 The reviews have always been good.

3. "Blockchain Principles, Design and Applications" - Author Yang Baohua and Chen Chang:

Senior Chen Chang, as the CTO of Zhigui, remembers that the previous MoChain was based on Hyperledger Fabric , so this book provides a thorough explanation of Hyperledger-related open source products.

3. "Blockchain World"

This book is divided into two parts. The previous article comprehensively reviewed the birth, growth and gradual development of blockchain from 2008 through detailed information, and introduced in detail the originality of blockchain technology, the scientific nature of the mechanism, and the artistry of logic. Through finance, More than ten industry scenarios including anti-counterfeiting and medical care introduce the application characteristics of blockchain. The next article combines the spirit of the G20 Summit and the latest policies such as the “13th Five-Year Plan” to explore the combination of blockchain and digital economy, as well as the author’s views and suggestions on industry development trends.

㈡ Little knowledge about blockchain: What characteristics does blockchain have?

Little knowledge about blockchain: What characteristics does blockchain have?
Nowadays, blockchain has become It is an area of ​​national concern, and many companies have already conducted in-depth research on the implementation of this technology. But there are still a lot ofSome people are not familiar with the concepts related to blockchain technology. Recently, Viking Research Institute and Jiazi Think Tank jointly produced the "Blockchain Industry Dictionary". Bianews is authorized as a media partner and will popularize blockchain-related knowledge for everyone every day.
Today, Bianews will bring you a little knowledge about blockchain Chapter (2): Characteristics of blockchain
1. Anonymous/Anonymous Since the data exchange between nodes in the blockchain follows The algorithm is fixed and predictable, so the blockchain network is trustless and can exchange data based on addresses rather than personal identities.
2. Autonomous/Autonomous blockchain adopts a mechanism based on consensus, allowing all nodes in the entire system to exchange data, record data, and update data freely and securely in a trustless environment. Any human intervention will doesn't work.
3. Openness/Openness The blockchain system is open, and any node can have the general ledger of the entire network. In addition to the private information of the parties directly related to the data being encrypted through asymmetric encryption technology, the blockchain The data is open to all nodes, so the entire system information is highly transparent.
4. Programmable/Programmable The digital nature of distributed ledgers means that blockchain transactions can be associated with computational logic and are programmable in nature. Therefore, users can set algorithms and rules that automatically trigger transactions between nodes.
5. Traceability/Traceability The blockchain stores all historical data after the creation block through the block data structure. Any piece of data on the blockchain can be traced back to its origin through the chain structure.
6. Cannot be tampered with/Tamper Proof. After the blockchain information is added to the blockchain through consensus, it is jointly recorded by all nodes, and is guaranteed to be interconnected through cryptography. The difficulty and cost of tampering are very high.
7. Collectively Maintain/Collectively Maintain The blockchain system is jointly maintained by all nodes with maintenance functions. All nodes can query blockchain data and develop related applications through public interfaces.
8. Permissionless/Permissionless means that all nodes can request that any transaction be added to the blockchain, but the transaction can only be carried out if all users consider it legal.

㈢ Are there 7 core technologies for blockchain operation that you should know?

How many of the 7 core technologies for blockchain operation do you know?
1 .Blockchain link
As the name suggests, blockchain is a chain composed of blocks. Each block is divided into two parts: block header and block body (including transaction data). The block header includes the hash (PrevHash) value (also known as the hash value) of the previous block used to implement the block link and the random number (nonc) used to calculate the mining difficulty.e). The hash value of the previous block is actually the hash value of the header of the previous block, and the rules for calculating random numbers determine which miner can obtain the power to record the block.
2. Consensus Mechanism
Blockchain was born with Bitcoin and is the basic technical architecture of Bitcoin. Blockchain can be understood as a decentralized accounting system based on the Internet. A decentralized digital currency system like Bitcoin requires blockchain to ensure the consistency of accounting by each honest node without a central node. Therefore, the core of blockchain technology is a consensus mechanism that reaches consensus on the legality of transactions among individuals who have no basis for trust in each other without central control.
There are currently four main categories of blockchain consensus mechanisms: PoW, PoS, DPoS, and distributed consensus algorithms.
3. Unlocking scripts
Scripts are an important technology for automatic verification and automatic execution of contracts on the blockchain. Each output of each transaction does not strictly point to an address, but to a script. A script is like a set of rules that govern how the recipient can spend the assets locked on this output.
The legality verification of transactions also relies on scripts. Currently it relies on two types of scripts: locking scripts and unlocking scripts. The locking script is a condition added to the output transaction, implemented through a script language, and is located at the output of the transaction. The unlocking script corresponds to the locking script. Only if the conditions required by the locking script are met, the corresponding assets on this script can be spent, which is located at the input of the transaction. Many flexible items can be expressed through scripting language. The interpretation script is similar to a "virtual machine" in our programming field, which is distributed and runs on every node in the blockchain network.
4. Transaction Rules
Blockchain transactions are the basic units that constitute blocks, and are also the actual effective content that the blockchain is responsible for recording. A blockchain transaction can be a transfer or other transactions such as the deployment of smart contracts.
In the case of Bitcoin, a transaction refers to a payment transfer. The trading rules are as follows:
1) The input and output of the transaction cannot be empty.
2) For each input of the transaction, if its corresponding UTXO output can be found in the current transaction pool, the transaction will be rejected. Because the current transaction pool is a transaction that has not been recorded in the blockchain, and each input of the transaction should come from a confirmed UTXO. If found in the current transaction pool, it is a double spend transaction.
3) For each input in the transaction, its corresponding output must be UTXO.
4) Each input unlocking script must work with the corresponding output locking script to verify the compliance of the transaction.
5. Transaction Priority
The priority of blockchain transactions is determined by the blockchain protocol rules. For Bitcoin, the priority of a transaction being included in a block is determined by the time it takes for the transaction to be broadcast to the network and the size of the transaction. As the transaction is broadcast to the networkAs time goes by, the chain age of the transaction increases, the priority of the transaction is increased, and it will eventually be included in the block. For Ethereum, the priority of a transaction is also related to the transaction fee that the publisher of the transaction is willing to pay. The higher the transaction fee that the publisher is willing to pay, the higher the priority of the transaction being included in the block.
6.Merkle proof
The original application of Merkle proof is the Bitcoin system (Bitcoin), which was described and created by Satoshi Nakamoto in 2009. The Bitcoin blockchain uses Merkle proofs in order to store transactions in every block. This makes the transaction unable to be tampered with and makes it easy to verify whether the transaction is included in a specific block.
7.RLP
RLP (Recursive Length Prefix, recursive length prefix encoding) is a main encoding method for object serialization in Ethereum. Its purpose is to encode any nested sequence of binary virtual data. Lu Ji

㈣ How to build a blockchain trading system

First of all, blockchain combines a variety of technologies, including computing, economics, cryptography, etc., integrating these disciplines Combined as the basis of the blockchain.

Secondly, combine the blockchain with the corresponding network, and then use mathematical knowledge to establish the relationship between the blockchains. This makes the blockchain a system that can operate independently.

The blockchain transaction system has changed from the original single central system control to a flexible social circulation, allowing resources in any field to circulate here and improving work efficiency.

Blockchain digital assets are built on various network platforms. These platforms involve multiple asset fields, including issuers, traders, exchanges, circulation channels and other institutions.

㈤ What is blockchain and where can I learn it?

Definition of blockchain

In a narrow sense, blockchain is a way to store data in chronological order. Blocks are connected in a sequential manner to form a chain data structure, and are cryptographically guaranteed to be a distributed ledger that cannot be tampered with or forged.

Broadly speaking, blockchain technology uses block chain data structures to verify and store data, uses distributed node consensus algorithms to generate and update data, and uses cryptography to ensure Security of data transmission and access, a new distributed infrastructure and computing method that uses smart contracts composed of automated script codes to program and operate data.

There are many channels to learn about blockchain

① You can buy some blockchain-related books and learn some blockchain-related knowledge in your spare time. I can also take notes and look up relevant information

②Watch some blockchain videos on the Internet. The content is easy to understand and comes with relevant examples.A very good way to learn.

③You can participate in some offline blockchain learning and exchange meetings, or participate in some training courses, and teachers will specifically answer your questions.

To sum up

All roads lead to Rome, and there are many channels to learn blockchain. The one that suits you is the best

㈥ Super detailed arrangement Blockchain and Cryptocurrency Industry Glossary (Recommended Collection)

Bitcoin Glossary: ​​Every Blockchain and Cryptocurrency Phrase You Need to Know

Despite the odds, blockchain Chain 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 - many of whom were early adopters of cryptocurrencies like Bitcoin and Ethereum - can truly understand this, while it can still be difficult for laypeople.

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 decentralizedA 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 "burned" by sending to a wallet that can only receive but not send. 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 blockchain, while cryptocurrenciesBuilt 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. Unlike typical 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 moneyBuy 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 security 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 a gas fee, which depends 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 allowsXu completes buy and sell orders 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

A browser-based online digital wallet, mainly used on the Ethereum blockchain transaction.

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 passedStaking their cryptocurrency to do this. 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 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 because the 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

SilkRoad 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 and USDC. 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 (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 NFTs. 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".

㈦ What is blockchain and how to make money with blockchain

Blockchain is a term in the field of information technology. In essence, it is a shared database, and the data or information stored in it has the characteristics of "unforgeable", "full traces left", "traceable", "open and transparent" and "collectively maintained". Based on these characteristics, blockchain technology has laid a solid foundation of "trust" and created reliable "cooperation".” mechanism has broad application prospects.
The ways to make money in the blockchain are as follows:
1. Coin speculation. Coin speculation is like stock speculation. Coin speculation is the lowest threshold for making money in the blockchain;
2. Vendors, blockchain is a global market. Like small vendors, they can move from low-price platforms to high-price platforms to sell and earn the difference;
3. Earn commissions for promotion, The blockchain method is to first register an exchange account, generate your own invitation link, and then promote it. If someone registers the exchange through your link and generates transactions, you can get a commission;
4. Mining, "Mining" in Bitcoin is the process of accounting;
5. Technical support, providing blockchain technical support to some teams and companies;
6. Opening a trading website and charging handling fees;
br />7. Develop a wallet, which is the infrastructure of the blockchain, just like the “Alipay” or “WeChat Pay” of the blockchain;
8. Be a blockchain project or infrastructure equipment supplier.< br />
Warm reminder: The above explanation is for reference only and does not make any recommendations. There are risks in entering the market, so investment needs to be cautious. Before making any investment, you should ensure that you fully understand the investment nature of the product and the risks involved. , after learning more about and carefully evaluating the product, you can then make your own judgment on whether to participate in the transaction.
Response time: 2020-12-02. For the latest business changes, please refer to the official website of Ping An Bank.
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㈧ Area How does blockchain empower digital city construction | Blockchain classroom

Cities are actively embracing blockchain, Internet of Things, artificial intelligence and other digital technologies to accelerate urban economic growth and improve urban life quality and environmental protection. Sustainable development capabilities. The digital transformation of cities also provides a good experimental field for the value mining and application of blockchain technology.

The construction of digital cities not only requires the realization of city-wide coverage of connected devices; Consider the collection of whole-process data and decision-making automation. Data on the blockchain has the advantages of being difficult to tamper with, safe and trustworthy, and can help the construction of digital cities in the following aspects:

Blockchain uses distributed storage structure, so each node in the system stores all the data on the system, making the data open and transparent and convenient for management. At the same time, cryptographic technologies such as privacy computing integrated with the blockchain can realize data processing without leaking data privacy. secure sharing, or by setting access permissions to allow authorized nodes to obtain corresponding data, thereby ensuring data security.

Thanks to the distributed network structure, even if a single or a small number of nodes fail, the entire district The blockchain network can still operate normally, greatly reducingRisk of system failure due to cyber attacks or technical issues. Compared with traditional cities, digital cities are more dependent on technology. Improving system stability will also help maintain the normal operation of digital city life.

Digital city innovation case empowered by blockchain

Dubai’s digital city project integrates blockchain, Internet of Things, artificial intelligence Smart and other new digital technologies are committed to making Dubai "the happiest city in the world".

A major innovation in Dubai Digital City is to strive to realize the on-chain operation and management of all government data transactions in 2021, and realize the electronicization of an average of 100 million paper-based processes per year. This blockchain-enabled digital reform is expected to save process management costs worth US$1.5 billion, save 25 million hours of process processing time, and reduce 114 million tons of carbon emissions. In addition, the Dubai government is actively cooperating with many blockchain companies, focusing on key areas and implementing multiple blockchain application cases.

The European Commission also recognized the importance of blockchain in reforming government services, and established the European Blockchain Partnership in 2018, covering local law enforcement agencies, national governments and the private sector in Europe. enterprise. The Commissioner of the European Commission’s Department of Digital Economy and Society is also confident in the value of blockchain technology in digital city construction and stated: “We believe that all public services in the future will be built on the infrastructure of blockchain.”

For example, the government of South Tyrol in Italy has used blockchain technology to digitize citizen data. Residents only need to register basic personal information once to enjoy services provided by different government departments, streamlining government affairs processing procedures, reducing costs and increasing efficiency.

At the same time, based on blockchain technology, Estonia has built a national health information electronic system. Through this blockchain platform, doctors can easily query patients' blood tests, recent treatments, X-ray examinations and other related data with authorization. Patients can also clearly check their medical records, prescriptions issued by doctors and other information. The characteristics of data on the blockchain, such as being difficult to tamper with and fully traceable, can ensure the security and integrity of the data on the platform.

Wanxiang Blockchain has also begun active exploration in blockchain-enabled digital city construction, using blockchain to integrate new digital technologies such as the Internet of Things and artificial intelligence to build a safe and trustworthy digital base. And through technologies such as private computing, knowledge graphs, digital twins, and distributed business incentives, we can manage production and life in a more refined and dynamic way, forming a smart, low-carbon, and comfortable resilient city with technology integration, comprehensive application, and high-end development. Help build a harmonious urban ecology with economic prosperity, job happiness, and sustainable development.

Wanxiang Blockchain is committed to building a “truly understand"Your" digital city, a trustworthy digital base built through the integration of blockchain and new technologies, allows each resident to have an exclusive digital avatar, truly control data sovereignty, and enjoy a safe and comfortable city without having their privacy protected from prying eyes. Life.