区块链比赛是什么意思,区块链大赛是做什么的

近年来，随着区块链技术的发展，区块链比赛越来越受到关注。区块链比赛是指以区块链技术为核心，针对各类区块链应用场景的大赛活动。它旨在促进区块链技术的发展，鼓励创新，激发创业热情，推动区块链技术的应用。

首先，我们来看看区块链比赛的定义。区块链比赛是指以区块链技术为核心，针对各类区块链应用场景的大赛活动。区块链比赛的参赛者可以是个人，团队，企业等，参赛者可以发挥自己的创新能力，利用区块链技术构建新的应用，挑战自身技术极限，以获得最终的胜利。

其次，我们来看一下区块链大赛的目的。区块链大赛旨在促进区块链技术的发展，鼓励创新，激发创业热情，推动区块链技术的应用。参赛者可以利用区块链技术来解决现实世界中的实际问题，探索区块链技术的潜力，挖掘新的应用场景，推动区块链技术的发展。

最后，我们来看看区块链大赛的奖励。区块链大赛的奖励通常是金钱奖励，现金奖励，荣誉称号，表彰奖励，学术论文发表机会等。参赛者可以根据自己的创新能力，技术水平，获得丰厚的奖励。参赛者可以利用区块链技术来解决实际问题，实现自身技术的发展，推动区块链技术的发展，从而获得丰厚的奖励。

总之，区块链比赛是一项旨在促进区块链技术的发展，鼓励创新，激发创业热情，推动区块链技术的应用的活动。参赛者可以利用区块链技术来解决现实世界中的实际问题，探索区块链技术的潜力，挖掘新的应用场景，获得丰厚的奖励。

『一』Blockchain upstream and downstream processes

1. Upstream companies (suppliers) publish product information on the blockchain, including Wangfu product names, specifications, prices, etc., as well as your own identity information and credit rating, etc.
2. Downstream companies (customers) select and purchase products on the blockchain. They can view the product information and credit ratings of upstream companies for comparison and selection.
3. Transactions between upstream companies and downstream companies are recorded and verified on the blockchain. Transaction information includes product quantity, price, transaction time, etc., as well as logistics information, quality inspection reports, etc. Payments involved in the transaction process can be automatically executed through smart contracts on the blockchain.

『二』Blockchain automatic transaction process

Blockchain automatic transaction process: Step 1: Transaction generation. The current owner uses the private key to sign a digital signature for the previous transaction and the next owner, and appends this signature to the end of the currency to create a transaction slip. Step 2: Propagation of the transaction. The current owner broadcasts the transaction order to the entire network, and each node collects several unverified transaction hash values ​​into blocks. Each block can contain hundreds or thousands of transactions. Step 3: Proof of work. Step 4: Full node verification. Step 5: Blockchain record.

『三』 Can anyone tell me how blockchain games work? Describe blockchain games in the most concise and clear language.

Blockchain games mainly refer to game-type blockchain applications in Dapps, which require a certain degree of interaction with various public blockchain chains. Blockchain games have gradually emerged since November 2017, and their development history is extremely short. Compared with mature games, the current gameplay is also quite simple. In the eyes of industry insiders, many games are even just money trays wrapped in game garb.
According to the classification of Cryptogames, among the currently online blockchain games, hot potato, collection trading, spinach and ponzi are the main game methods. The largest number of games belong to the hot potato category, including two recent popular games of this type - CryptoCelebrities (encrypted celebrities) and CryptoCountries (encrypted world). There are 35 models in the collection and transaction category, ranking second, with the main representative being CryptoKitties. There are 17 models in the spinach and ponzi category, ranking third. The star products are EtherRoll and Etheremon respectively.
The themes used in blockchain games are also diverse, ranging from cats, dogs, dragons, pigs and other animals, to people, cars, countries, teams and so on.
Blockchain Game 1.0 Era
Time: November to December 2017
Main gameplay: collection + transaction
Representative work: CryptoKitties, CryptoPunks
Blockchain technology gives players’ digital assets uniqueness. This gradually gave rise to the concept of NFT (non-fungible tokens, non-fungible tokens). The uniqueness and scarcity of people's assets in blockchain games will not change with the game itself. The first to apply this concept was CryptoPunks launched by LarvaLabs in June 2017. The system randomly generates 10,000 punk avatars, puts them on Ethereum through smart contracts, and distributes them to players for free for players to trade.
When Axiom Zen studio added attributes, reproduction and auction functions on the basis of NFT, the Cryptokitties hit was born. People can buy kittens with different attributes, "breed" them with other cats, or sell their own cats through a Dutch auction. Kittens with rare and unique genes are highly sought after and fetch considerable premiums.
People continued to develop on the basis of Cryptokitties, adding accessories and combat functions, as well as gameplay methods such as digging for gold, feeding, and grabbing treasures.
Blockchain Game 2.0 Era
Time: December 2017 to January 2018
Main gameplay: Ponzi-like
Masterpiece: Etheremon
At the beginning, Etheremon The gameplay is very simple and crude at the beginning. After the player buys a certain pet, as long as someone buys the same pet later, the player can get a small part of the eth reward. The game team quickly made a profit of about 2,000 ETH within a week. Then the gameplay was completely changed and successfully transformed into a collection + combat game. This Ponzi-like gameplay was quickly imitated by other manufacturers, and many imitators such as ether cars and ethertanks appeared.
Blockchain Game 3.0 Era
Time: January 2018
Main gameplay: hot potato mode with fixed selling price and forced price increase
Representative works: CryptoCelebrities, CryptoCountries
Players purchase crypto celebrities (Satoshi Nakamoto, Musk, etc.) and crypto countries (Japan, the United States, etc.). Due to the uniqueness of the asset, subsequent players can only purchase it from the asset owner at a higher price, and the price is forced to increase. , the platform earns part of the price difference. Currently, the country with the highest price is Japan, which is about more than 700 ETH. The most expensive celebrity is Elon Musk, who is "worth" about 200 ETH.
Blockchain Game 4.0 Era
Time: February 2018
Main gameplay: combination of multiple mechanisms
Representative works: World.Mycollect, Cryptocities
Adopted in the game Multi-level sales and sharing, player exploration (randomness), lottery, unique resourcesFeatures and other ways to play. For example, in Cryptocities, players can purchase countries, continents, and worlds to “conquer.” Players who conquer the world can get 1% tax on the continent and country's transaction volume, and players who conquer the continent can get 1% tax on the country's transaction volume. Players who conquer a country will receive 1% tax on the transaction volume of their subordinate cities in the future. When players explore new cities, they have a chance to discover gems. Obtaining gems can earn ETH rewards.
At the same time, spinach games also emerged. The high transparency of blockchains makes it easier for them to gain the trust of investors. The more famous ones are Etheroll and Vdice. The gameplay is simple and crude. Players spend a certain amount of ETH to bet on a certain number. When the number randomly generated by the system is smaller than the number, they can get profits.
In addition, there are RPG (EtherCraft), fighting games (Etherbots) and two-dimensional (Ether Cute King), etc.
2
Advantages and Disadvantages of Blockchain Games
Looking at these successful cases, we find that blockchain games do have unique advantages:
Higher trust: Trust is quickly established through open source contracts, the usage process is completely transparent, and the information is completely symmetrical. Fairness: The data cannot be tampered with and the rules never change. Assets belong to the players personally: Player assets will not be lost as the game declines. Has strong community attributes: The blockchain itself has strong transaction and community attributes.
Of course, the current blockchain game is also in its infancy, with obvious shortcomings:
Inability to interact in time: blockchain transactions have uncertain waiting times and the possibility of congestion, making it difficult to win among players. Form real-time interaction between them. The cost of sending instructions is high: each time you send an instruction, you need to consume GAS, and the price of ETH still makes the GAS fee relatively high. Immature development environment: At present, Ethereum’s virtual machine and programming language Solidity are already the most mature development environments among many public chains. But it is still very immature compared to other popular languages.
3
Gamification will boost the implementation of blockchain
In traditional desktop online games, manufacturers continue to incentivize new players, leading to inflation. The actual value of all assets in a game account is often Far less than the player's investment. After the emergence of mobile games, the model of binding items to accounts and accounts to ID cards quickly became popular. This also makes it necessary for players to give up all virtual assets in the game once they decide to leave a game. The emergence and continuous maturity of blockchain technology will make the decentralized formulation of game rules and the decentralized storage of virtual assets technically feasible. The convenience of putting virtual assets on the chain also makes it easier to implement blockchain in game scenarios.
Cryptogames believes that the development direction of blockchain games is that of classic games (just like basketball, football and chess, once the rules are determined, they will last forever)The direction of development must be "decentralized":
The rules are negotiated and determined by the players. Players supervise each other to ensure that the game is played according to the rules. All props used in the game are owned by each player. Someone breaks the rules or plays. If you are unhappy, you can just leave. The game itself does not have a centralized organizer
The popularity of CryptoKitties has greatly promoted private wallets. As an early blockchain application, blockchain games have quickly promoted the popularity of blockchain. universal. Similarly, using game development experience and game design concepts to develop 『四』 What exactly is blockchain

Let’s talk about some basic concepts first.

The network said that blockchain is a new usage model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanisms, and encryption algorithms. It is essentially a decentralized database, and as the underlying technology of Bitcoin, it is a series of data blocks generated by cryptography.

We try to translate "what is blockchain" into "human language".

The definition refers to the "decentralized database" nature of blockchain3354. This is very different from the traditional "centralized database" in storage, update and operation.

A centralized database can be thought of as having this shape:

For example, if I want to use Alipay to pay a Taobao seller, all data requests from when I make money to when he receives the money will be centrally processed by Alipay. The advantage of this data structure is that as long as Alipay is responsible for the efficient and safe operation of the system, others can unconditionally believe it without worrying; the disadvantage is that if there is a problem with Alipay, such as being hacked, the server being burned, a traitor appearing, and the company running away (Of course, the possibility of the above is extremely low), the balance details and other information in our Alipay will be confused.

Then some people think that this kind of low-probability event can use any technical means to avoid individual risks, and not only hand over the data to a centralized organization. For example, everyone can store and process data.

The database structure may look like this:

This picture is a schematic structural diagram of a "distributed database". Each point is a server, they all have equal rights to record and calculate data, and information is spread point-to-point. At first glance, it seems that it can indeed resist the risk caused by the crash of a certain node, but it is also very confusing and inefficient intuitively. Who will handle my information, and who has the final say on the outcome?

At this time, the "consensus mechanism" in the definition of blockchain comes into play. The consensus mechanism mainly "stipulates" the following things: who will process a data request (what qualifications are required); who will verify the results (to see if he has handled it well); how to prevent processors and verifiers from colluding with each other, etc.

Some people may like to be questioned when a "rule" is made. In order to form a stronger consensus, in addition to making the rules more reasonable, they must also be more attractive so that people are interested and motivated to participate in data processing. This involves the incentive mechanism of the public chain. We will start again later when we discuss the classification of blockchain and the role of digital currencies.

When we put a transactionWhen handing it over to a distributed network, there is also a "psychological threshold": there are so many nodes that can process information, and I don't know any of them (unlike Alipay, if it hurts me, I can go to it to file a lawsuit). They all have my data, why should I trust them?

At this time, encryption algorithm (the last descriptive word in the definition of blockchain) comes on stage.

In the blockchain network, the data requests we send will be encrypted according to cryptographic principles into a string of characters that the recipient cannot understand at all. Behind this encryption method is the support of a hash algorithm.

Hash algorithms can quickly convert any type of data into hash values. This change is one-way irreversible, deterministic, random, and anti-collision. Because of these characteristics, the person handling my data request could record the information for me, but they had no idea who I was or what I was doing.

So far, the working principle of the decentralized network has been introduced. But we seem to have overlooked one detail. The previous diagram is a net. Where are the pulleys and chains? Why do we call it blockchain?

To understand this matter, we need to clarify a few knowledge points first:

The previous picture is actually a "macro" database perspective, showing the basic rules and processes of the blockchain system for processing information. . And specifically at the "micro" data log level, we will find that the ledger is packaged, compressed, stored in blocks, and strung together in chronological order to form a "chain structure", like this:

Figure Each ring in can be regarded as a building block, and many links are linked together to form a blockchain. Blocks store data, unlike ordinary data storage: on a blockchain, the data in a later block contains the data in the previous block.

In order to academically explain the fields of each part of the data in the block, we tried to use a book metaphor to describe what a blockchain data structure is.

Usually, when we read a book, we read the first page, then the second and third pages. The spine is a physical existence that fixes the order of each page. Even if the book is scattered, the order of each numbered page can be determined.

Inside the blockchain, each block is marked with a page number, the second page contains the content of the first page, the third page contains the content of the first and second pages. The tenth page contains the previous Nine pages of content.

It is such a nested chain that can be traced back to the original data.

This brings up an important attribute of blockchain: traceability.

When the data in the blockchain needs to be updated, that is when new blocks are generated in sequence, the "consensus algorithm" comes into play again. This algorithm stipulates that a new block can only be formed if it is recognized by more than 51% of the nodes in the entire network. To put it bluntly, it is a matter of voting, and it can be elected if more than half of the people agree. This makes the data on the blockchain difficult to tamper with. If I were to force a change, there would be too many people to bribe and the cost would be too high to be worth it.

This is what people often call the "non-tamperable" feature of blockchain.

Another reason why blockchain gives people a sense of trust is because of "smart contracts."

Smart contracts are determined by computer programsDefinition and automatically executed commitment agreement. It is a set of transaction rules executed by code, similar to the current automatic repayment function of credit cards. If you turn on this function, you don’t have to worry about anything. The bank will automatically deduct the money you owe when it is due.

When your friend borrows money from you but doesn't remember to pay it back, or makes excuses not to pay it back, smart contracts can prevent breach of contract. Once the terms in the contract are triggered, such as when it is time to pay back the money, or there is a limit in his account, the code will automatically execute, and the money he owes you will be automatically transferred back whether he wants it or not.

Let’s briefly summarize. Blockchain technology is mainly decentralized, difficult to tamper with, and traceable, which represents more security and trustlessness. But it also brings new problems: redundancy and inefficiency, which requires many nodes to agree with the rules and actively participate.

This concludes the "drying" section. Next, let’s talk about unofficial history and the official history of blockchain.

A new technology is often used to serve a certain task.

Or goals. So where was blockchain first used, and who came up with it first?

Let's go back to 2008.

On September 21, Wall Street investment banks collapsed one after another, and the Federal Reserve announced that it would convert the only two remaining investment banks (Goldman Sachs Group and Morgan Stanley) into commercial banks; it hoped to survive the financial crisis by absorbing savings. On October 3, the Bush administration signed a $700 billion financial rescue package.

Twenty-eight days later, on November 1, 2008, a new post appeared in a cryptography mailing group: "I am developing a new electronic currency system that is completely peer-to-peer and does not require a third party. Three-party trust institution." The text of the post is a paper titled "Bitcoin: A Peer-to-Peer Electronic Cash System", signed by Satoshi Nakamoto.

The paper explains the design of this peer-to-peer electronic cash system with a more rigorous logic. It first discusses the problem that financial institutions are subject to "trust based" (based on credit), and then explains step by step how to achieve "no third-party agency" , and cleverly solved the technical problems left by the predecessors.

Two months later, Satoshi Nakamoto released the first version of the open source Bitcoin client and mined 50 Bitcoins for the first time. The block that generated the first batch of Bitcoins is called the "Genesis block". The genesis block was compiled into block 0 and was not uploaded to the chain. It took Satoshi Nakamoto 6 days to mine this block. This also sparked discussion in the bitcointalk forum. Bitcoin "believers" thought of the Bible, "God created the heavens and the earth in six days, and then rested on the seventh day."

Although concepts such as decentralized, token, and economy did not appear in the paper, Satoshi Nakamoto explained in detail the role of blocks and chains in the network. working principle. So, there isBlockchain.

This paper later became the "Bible" of the "Bit Cult", technology became the cornerstone of faith, and developer documentation became the "Code of Hammurabi".

After that, Bitcoin realized the first real-life payment by exchanging pizza, WikiLeaks, whose account was blocked by the US government, miraculously survived by relying on Bitcoin, Satoshi Nakamoto's "decentralization" and retirement, and the appearance of the real and the fake A series of legends such as and refutation of rumors, combined with the expectations, imagination and speculation of later generations, became "Bible stories".

There are also people who are not satisfied with the world described in the "Old Testament" and start new sects, write the doctrines into white papers, and tell the story of their faith in the ten years after Bitcoin. Just like the writing of the 66 books of the Bible spanned 1,500 years, and after 2,000 years of interpretation, Christianity has divided into 33,000 branches.

CoinMarketCap shows that there are more than 4,900 types of digital currencies, and the overall digital currency market size is nearly 140 million yuan. Bitcoin still leads the entire digital currency market with a market share of 66%, and the recent price has been hovering around US$7,200 per coin.

So many currencies have different functions and are divided into different categories: digital currencies represented by Bitcoin are positioned as "digital gold" and have certain value storage and hedging characteristics; Ethereum The digital currency represented by USDT and Libra has become the "operational fuel" in its network system; the stable currency represented by USDT and Libra has good payment properties due to its low volatility; the digital currency issued by the central bank represented by DCEP will definitely To a certain extent, it replaces M0, allowing commercial institutions and ordinary people to receive and pay without delay when they are out of cash and disconnected from the Internet.

It can be seen that after 10 years of development of blockchain technology, the first and largest application is digital currency.

Digital currency has also become an attractive reward for participants to maintain the public chain.

So besides digital currency, where else can blockchain technology be used?

Let us recall what the essence of blockchain is—a decentralized database, and its corresponding characteristics: traceability, publicity, anonymity, and tamper-proofing. In theory, you can try to use blockchain to transform traditional scenarios that use centralized databases to see if they are suitable.

Next, let’s talk about several industries and scenarios where blockchain has been successfully implemented:

Blockchain can prove the existence of a certain file or digital content at a specific time through hash timestamps, providing judicial authentication, Identity proof, property rights protection, anti-counterfeiting traceability, etc. provide perfect solutions

In the field of anti-counterfeiting traceability, blockchain technology can be widely used in various fields such as food and medicine, agricultural products, alcohol, and luxury goods through supply chain tracking.

Give two examples.

Blockchain can allow government data to be run, greatly streamlining service processes

The distributed technology of blockchain can allow government departments to be centralized on one chain, and all service processes are delivered to smart contracts, and the workers only need to be in one department Through identity authentication and electronic signature, smart contracts can be automatically processed and transferred in sequence.Complete all subsequent approvals and signatures.

Blockchain invoices are the earliest use of blockchain technology in China. The tax department launched the "Tax Chain" platform for blockchain electronic invoices. The tax department, the issuer, and the payee join the "Tax Chain" network through unique digital identities, truly realizing "instant invoicing for transactions" and "immediate reimbursement of invoices" - in seconds Level invoicing and minute-level reimbursement accounting greatly reduce tax collection and management costs, and effectively solve problems such as data tampering, over-reporting of one ticket, and tax evasion.

Poverty alleviation is another practical application of blockchain technology. Utilize the characteristics of openness, transparency, traceability, and non-tampering of blockchain technology to achieve transparent use, precise investment, and efficient management of poverty alleviation funds.

Give two examples as well.

The eID network identity operation agency guided by the Third Research Institute of the Ministry of Public Security is jointly developing a "digital identity chain" with Gongyilian, which will be issued to Chinese citizens based on the citizen's identity number as the root and cryptographic algorithm. Since it was put into operation, the eID digital identity system has served the full life cycle management of 100 million eIDs, effectively alleviating the problems of personal identity information being fraudulently used, abused and privacy leaked.

Odaily Planet Daily compiled 5 identity chain projects registered with the Cyberspace Administration of China

Blockchain technology naturally has financial attributes

In terms of payment and settlement, under the blockchain distributed ledger system, there are many markets Participants jointly maintain and synchronize a "general ledger" in real time. In just a few minutes, they can complete payment, clearing, and settlement tasks that currently take two or three days to complete, reducing the complexity and cost of cross-bank and cross-border transactions. At the same time, the underlying encryption technology of the blockchain ensures that participants cannot tamper with the ledger, ensuring that transaction records are transparent and safe. Regulators can easily track transactions on the chain and quickly locate high-risk capital flows.

In terms of securities issuance transactions, the traditional stock issuance process is long, costly and complex. Blockchain technology can weaken the role of underwriting institutions and help all parties establish a fast and accurate information exchange and sharing channel. The issuer can handle the issuance on its own through smart contracts. , regulatory authorities conduct unified review and verification, and investors can also bypass intermediaries for direct operations.

In terms of digital bills and supply chain finance, blockchain technology can effectively solve the financing difficulties of small and medium-sized enterprises. It is difficult for current supply chain finance to benefit small and medium-sized enterprises in the upper reaches of the industrial chain, because they often do not have direct trade relations with core enterprises, and it is difficult for financial institutions to evaluate their credit qualifications. Based on blockchain technology, we can establish a consortium chain network covering core enterprises, upstream and downstream suppliers, financial institutions, etc. The core enterprises issue accounts receivable vouchers to their suppliers. After the bills are digitized and uploaded to the chain, they can be uploaded to the supplier Transfer between them, each level of supplier can realize the corresponding amount of financing with the digital bill certificate.

Give me an example.

The China Enterprise Cloud Chain, jointly launched by ICBC, Postal Savings Bank of China, 11 central enterprises, etc., has covered 48,000 companies since its establishment in 2017, with the amount of rights confirmed on the chain reaching 100 billion yuan, and factoring financing of 57 billion yuan. , cumulative transactions reached 300 billion yuan. After receiving the loan application, the financial institution can verify the authenticity and accuracy of the contract on the chain.Whether there are multiple verifications (multiple loans); smart contracts automatically clear and settle, reducing costs and increasing efficiency; at the same time, the accounts payable of core enterprises can have corresponding vouchers, and be split by first-tier suppliers and handed over to the same chain second- and third-tier suppliers to help them with financing; and core enterprises can also use this to understand whether the entire chain is operating normally and avoid the pressure of emergency payment.

Blockchain technology will greatly optimize the existing use of big data and play a huge role in data circulation and sharing

The aforementioned areas are areas that we are relatively familiar with. As more new technologies develop, blockchain may be able to be combined with them and play a role in unexpected cross-fields and new scenarios that are currently unforeseen.

In the future, the Internet, artificial intelligence, and the Internet of Things will generate massive amounts of data. The existing centralized data storage (computing model) will face huge challenges. Edge storage (computing) based on blockchain technology is expected to become a future solution. Furthermore, the non-tampering and traceability mechanism of blockchain ensures the authenticity and high quality of data, which becomes the basis for the use of all data such as big data, deep learning, and artificial intelligence.

Finally, blockchain can realize multi-party collaborative data calculations while protecting data privacy, and is expected to solve the problems of "data monopoly" and "data islands" and realize the value of data circulation.

In response to the current blockchain development stage, in order to meet the blockchain development and use needs of general business users, many traditional cloud service providers have begun to deploy their own BaaS ("Blockchain as a Service") solutions. The combination of blockchain and cloud computing will effectively reduce enterprise blockchain deployment costs and promote the implementation of blockchain usage scenarios. In the future, blockchain technology will also play an important role in many fields such as charity, insurance, energy, logistics, and the Internet of Things.

During this trial process from traditional technology to blockchain, we found that when certain scenarios have stronger demands for traceability, tamper-proofing, and decentralization, they also have problems with the weaknesses of blockchain (such as performance). , the requirements are not high, and this field is quite suitable for combining blockchain.

At the same time, in the process of blockchain evolution, it has also developed from a highly decentralized public chain accessible to everyone to a consortium chain with different permissions and maintained by multiple centers. Balances the advantages and disadvantages of the two systems.

Typical examples of alliance chains include: FISCO BCOS jointly developed by WeBank and the Golden Alliance Open Source Working Group, Fabric, a major contribution from IBM, and Ant Alliance Chain led by Ant Blockchain, etc.

These trustless systems represent more secure data authentication and storage mechanisms, where data is effectively authenticated and protected. Businesses or individuals can exchange or enter into contracts digitally, where these contracts are embedded in code and stored in transparent, shared databases where they cannot be deleted, tampered with, or revised.

It is boldly predicted that in the future, contracts, audits, tasks, and payments will all be digitized with unique and secure signatures. Digital signatures will be permanently identified, authenticated, legalized, and stored, and cannot be tampered with. No need to hitThe intermediary guarantees each of its transactions, and can conduct transactions without knowing the basic information of the other party. While improving information security, it effectively reduces transaction costs and improves transaction efficiency.

Generally speaking, there has been a lot of progress in the implementation of blockchain compared to two years ago.

Many improvements are at the bottom of the system, and users cannot directly see that blockchain is used, but they have actually benefited from it; some applications are still in pilot mode, and users have not yet been able to experience it. In the future, blockchain is expected to be used on a large scale and become one of the Internet infrastructure.

I hope that after reading this, you have a general understanding of what blockchain is and what blockchain can do.

Related Q&A: What is blockchain

Blockchain is actually equivalent to a disintermediated database, which is composed of a series of data blocks. Each of its data blocks contains information about a Bitcoin network transaction, which is used to verify the validity of the information and generate the next block.

In a narrow sense, blockchain is a chain data structure that combines data blocks in a sequential manner in chronological order, and is cryptographically guaranteed to be non-tamperable and non-forgeable. distributed ledger.

In a broad sense, blockchain is actually a distributed infrastructure and computing method, which is used to ensure the security of data transmission and access.

Blockchain infrastructure:

Blockchain is composed of six infrastructures: data layer, network layer, consensus layer, incentive layer, contract layer and usage layer.

『五』What information and processes are required for trading on the ICO blockchain

ICO transactions are roughly divided into two parts, one is over-the-counter trading and the other is exchange trading

There are three ways to list on the exchange. The first is to vote for listing, the second is to invest in listing, and the third is to cooperate with project parties.

For exchanges, the more platform coins consumed by voting, the better; for project parties, it must be lower costs and greater user influence, the better; but for ordinary communities For users, the easier it is, the better.

What do project parties need?

The cost of project docking exchange:

The current popular Matcha exchange is generally 12-15 BTC,

Biki It is about 10 BTC with Gate exchange,

ZG exchange is 6-8 BTC,

2-5 BTC, there are many options to choose from, Leidun, ZBG , Fcoin, WBF and some other exchanges.

Fcoin, which is relatively cost-effective, is also a good choice. In the later stage, project parties can join forces with the platform to do activities, whether it is airdrops, IEO or anything else, they can be discussed.

『Lu』 Is the Blockchain Technology Application Innovation Competition Difficult?

The Blockchain Technology Application Innovation Competition is difficult. The Blockchain Technology Application Innovation Competition is a technology-based competition that has high requirements for participants and requires a solid professional background.To participate, you must have skills such as knowledge, blockchain theoretical knowledge, technical practice, and industry practice. The Blockchain Technology Application Innovation Competition can enhance knowledge reserves, lay a solid foundation for future practice and development, and be able to overcome difficulties and tests during the competition, thereby becoming a team with the spirit of self-improvement, hard work, solidarity and mutual assistance, and moving forward together. The new era of new youth with the spirit of unity.

『撒』 What is the process of block formation in blockchain technology?

Jinwowo Network analyzes the block formation process in blockchain as follows:
1-Record: Record the transaction information in the local memory into the block body
2-Generate: Generate the Merkle tree of all transaction information in this block in the block body, and put the value of the Merkle tree root Save in the block header
3-Fill in the parent hash value: Use the SHA256 algorithm to generate a hash value from the block header data of the previous block just generated and fill it in the parent hash value of the current block. Medium
4-Time Saving: Save the current time in the timestamp field
5-Difficulty Coefficient: The difficulty value field will be adjusted based on the average generation time of blocks in the previous period to cope with the constant changes in the entire network The total amount of calculations. If the total amount of calculations increases, the system will increase the difficulty value of the math questions so that the expected time to complete the next block is still within a certain period of time.

『8』 What is the transaction process of blockchain like? The best example to illustrate

1. Definition

Blockchain is like an open network ledger. It originated from Bitcoin and is the underlying technology of Bitcoin. In a Bitcoin transaction, all the information recorded in the transaction is packaged into a "Block" for storage. With the expansion of information exchange, blocks are linked to each other, forming a blockchain.

2. Characteristics

Digital currency represented by Bitcoin is a peer-to-peer electronic cash system. Among them, each transaction will be broadcast to all participants in the network, and will be recorded in the ledger after multiple confirmations. This ledger is the "blockchain". Each participant will have his or her own ledger. In this way, when false information occurs, it can be broken through mutual verification, thereby ensuring network security.

In the blockchain, every node is equal and there is no centralized management organization. This "decentralization" feature makes the blockchain unnecessary to rely on third parties and its operation is independent. Ability to independently self-verify without any human intervention required. In addition, the blockchain network is open to the world, and anyone can query data through the public port, so the entire system is highly transparent.

3. Application

In short, the blockchain is a trusted database and a reliable "ledger". In the future, it will be used in cross-border payments, securities, loans, voting, etc. For example, in cross-border payments, with the security provided by blockchain, it can be done anytime, anywhereSend money all over the world, eliminating a lot of middlemen and high fees.