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㈠ Which blockchain projects are worth investing in now?

Nowadays, blockchain has been vilified by many players. When it comes to blockchain, the first reaction of many people is that they are scammers. In fact, blockchain has now begun to study practical applications in many industries, such as logistics, medical care, etc. If you invest, you can start with application implementation, but the cost is too high and the technical requirements are relatively high. The other is mining. Although the income will be slower, it is still relatively stable. Don't believe in all kinds of stocks with high profits and high returns. The greater the temptation, the deeper the pit.

㈡ 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 a reliable "cooperation" mechanism, which 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, district Blockchain is a global market. Like small traders, you can move from a low-price platform to a high-price platform to sell and earn the difference;
3. Earn commissions for promotion. The blockchain method is to register first 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 accounting process;
5. Technical support, providing blockchain technical support to some teams and enterprises;
6. Opening a trading website and charging handling fees;
7. Developing wallets and wallets It 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.

Warm reminder: The above explanation is for reference only and does not make any suggestions. 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 understanding and carefully evaluating the product, you can 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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㈢ What kind of blockchain project is the best? It is possible to invest and make money

Blockchain is definitely the hottest topic of this era and the trend of future development. However, people’s understanding of blockchain is always like a blind man touching an elephant. Those who touch their nose feel like a pipe., when you touch your belly, it feels like a wall, when you touch your feet, it feels like a pillar... In fact, it's neither. It's just because we don't have a complete view and understanding that our knowledge is incomplete, and then we may be used and deceived by others.

Third, there must be an investment protection mechanism.

The investment protection mechanism is easy to understand but difficult to implement. Investment protection mechanisms include: legal protection mechanisms and return protection mechanisms.

The legal protection mechanism of course refers to legal compliance, which is best reflected in the form of a contract agreement. This approach cuts off the escape route and allows some people with ulterior motives to escape. There is no opportunity for people to take advantage of.

The guarantee of returns is direct cash dividends. This is also an extremely important point in investment standards. Users must be given cash dividends, and sharing shares with coins is fake. It is not as practical as getting cash in your hands. Most people are small and medium-sized investors and do not have that much money to lose, unlike large investors who can forget about losses. If small and medium-sized investors lose money in their investment, it will be fatal, and the family may even have no way of living from now on. Therefore, distributing cash may seem demanding, but it is actually a kind of protection for investors. If you want to live a few more days, you have to ask for this.

Some dividend disks split the disk and give you some coins. Is it useful for you to hold it? If it can't be sold at all, then it's still equal to zero. It's different if you give cash. If you give cash, you can use it immediately after you get it. It's hard currency.

At the same time, the cash distribution can also show the determination of the project party and whether it is really doing something. One investment corresponds to one dividend. If it is not a project that is really doing something, can the cash be used to distribute it? Just kill it! Therefore, the practice of dividing cash is also an investment standard for many current projects.

If the three conditions are met at the same time, you can invest and there is a high probability that your investment will be doubled; if the three conditions are not met at the same time, then you can wait to protect your rights.

㈣ What are the good blockchain projects in 2020

The history of digital currency has been developing for more than ten years since the birth of Bitcoin in 2009, and the world A total of tens of thousands of blockchain projects have appeared. After experiencing the blockchain 1.0 and 2.0 eras, blockchain is about to enter the 3.0 era, that is, the era of token economy. The emergence of commercial platforms has made the "token economy" possible. It has brought about changes in productivity development and production relations.

Based on this background, NGK Token came into being. The platform has many technologically leading R&D elites and the full support of many powerful investment companies. The United States is regulated by the SEC Securities and Exchange Commission.

The NGK.I0 team has been concentrating on researching and launching a profit method that combines the NGK blockchain digital currency fund and industrial ecology since 2018 to comprehensively create a more complete business ecology. Circle will surely lead the blockchain market again

As a barrier-free pass on the NGK.IO platform, the NGK pass connects online and offline merchants from all walks of life and realizes commercial applications. It not only helps the transformation and upgrading of traditional industries, but also leverages the Internet economy and promotes Development of the real economy

NGK.IO has a built-in Turing-complete programming language, which users can use to construct and define their own various characteristics, develop their own applications and blockchain systems, and Issue your own currency.

NGK.IO also has side chains that can be customized with one click. NGK.IO provides proprietary cross-chain and cross-contract technology to link the main chain and side chains together. Whether it is contract assets on NGK.IO or assets not on NGK.IO, value transfer and exchange can be completed freely through NGK.IO's cross-chain and cross-smart contract technology.

Moreover, NGK.IO does not need to consume GAS at every step like Ethereum when running smart contracts. This makes it possible for users to use Dapps for free, which is more in line with the use of free Internet products that rely on value-added services and advertising. Profitable business model

So we can think that Dapps developed based on NGK.IO are real Dapps.

The design goal of NGK.I0 is to exceed 1 million TPS, and it is proposed that the block confirmation time of NGK.IO will reach 3 seconds. Therefore, NGK.IO will have very excellent performance and is expected to change The current situation of blockchain technology being unable to be implemented

From this, we can foresee that in the future, many blockchain entrepreneurial projects will choose to issue tokens based on NGK.IO, develop a large number of Dapps that can be implemented, and attract a large number of Billions of users are using it

NGK.IO is expected to form a rich and complete business ecosystem, and at the same time generate a large demand for transaction tokens.

NGK.IO makes full use of the blockchain and the NGK.IO ecosystem to establish a secure, verifiable, fair, decentralized, trustless, and borderless business and financial area. The blockchain system provides innovative enterprise teams with financial services and industry incubation services such as industrial funds, Internet funds, blockchain funds, Internet of Things and artificial intelligence, and creates a world-class ecological business closed loop.

And through cross-chain, value exchange can be formed for different consumption scenarios, providing certain technical strength for the commercialization process of the global "token economy"!

I believe that in the future NGK.IO will definitely improve the speed of value exchange by leaps and bounds, thereby realizing a truly united and interoperable value network! #digital currency # #blockchaininformation # #currency circle news # #Mining for Gold # #currency circle news #

What are the classifications and applications of blockchain projects

From the perspective of 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.

Coins mainly serve as the "medium of exchange" in the field of blockchain assets. The medium of exchange refers to general equivalents, such as gold and silver notes in the past. (Trade blockchain assets on "Bihui Exchange")

Platform projects refer to the establishment of technology platforms to meet the development of various blockchain applications, which can reduce the cost of developing applications on the blockchain. threshold.

The scope of application projects is relatively wide, covering many fields such as finance, social networking, games, property rights protection, etc. It is also the fastest growing field of blockchain assets.

The asset tokenization project refers to the blockchain mapping of physical assets, that is, the physical assets are put on the chain. Currently, there are no more than 10 varieties.

01 Currency

The first category is currency projects, which are also the earliest blockchain projects. Currency projects mainly include projects such as Bitcoin and Litecoin. In addition, there is another type of asset that has the characteristics of anonymity. Its main functions include realizing payment while protecting the privacy of both parties. The well-known ones include Dash, Monero and Big Zero that use zero-knowledge proof. Coin (Zcash), etc. Currency mainly serves as the "medium of exchange" in the blockchain asset field. The medium of exchange is the general equivalent that you use to exchange for goods. For example, in the past, gold, silver, and banknotes could be used as media of exchange. There are currently more than 2,100 types of digital assets in the world, and the number of currency blockchain projects has grown rapidly recently. As of June 2018, Bitcoin still has the largest market value.

02 Platform Category

The second category is platform blockchain projects. The main function of platform blockchain projects is to establish a technology platform to meet the needs of various blockchain application development. The required technical requirements; simply put, platform applications allow developers to directly issue digital assets on the blockchain, write smart contracts, etc. A smart contract is a computer program that runs on a blockchain database and can be automatically executed under conditions set by its source code.

For example, if you develop a smart contract based on a house rental agreement on the blockchain, when the owner receives the rent, it will trigger automatic execution and give the apartment's security key to the tenant.

The main function of platform blockchain projects is to establish an underlying technology platform to allow developers to develop applications on the underlying technology platform. A considerable number of platforms are still under development. As of June 2018 , the one with the largest market value is Ethereum.

03 Application Category

The third category is application blockchain projects. Application projects are developed based on blockchain development platforms (such as Ethereum) and can solve various problems in the real economy. Blockchain projects that address many issues in the field.

For example, the blockchain-based prediction platform Augur, the blockchain-based computing power trading platformGolem Taiwan, VeChain, a blockchain-based luxury goods traceability platform, and OmiseGo, which provides asset exchange and transfer services based on blockchain. Using blockchain technology, these projects can better solve trust issues, cross-border circulation and other issues. At the same time, using smart contracts and tokens on the blockchain, automatic execution can be better realized, greatly improving the efficiency of social and economic activities. efficiency. The scope of applied blockchain projects is relatively wide, covering many fields such as finance, social networking, games, property rights protection, etc. It is also the field where the market value of blockchain projects is increasing the fastest.

04 Asset Tokenization

The fourth category is asset tokenization blockchain projects. Asset tokenization refers to linking blockchain assets to physical assets such as gold and U.S. dollars. , is a blockchain mapping of physical assets. As of February 2018, there are no more than 10 varieties. The more typical representatives are USDT, which is benchmarked against the US dollar, and Digix Dao, which is benchmarked against gold. Each DigixDAO token represents 1 gram of London gold. Silver Market Association certified gold. Asset tokenization has the advantages of convenient transactions and safekeeping. First, asset tokenization makes transactions easier. Because blockchain assets can be split, they have better liquidity.

For example, currently the real estate needs to be transferred as a whole. If the real estate can be tokenized, it can be purchased in pieces, making transactions more convenient. Secondly, tokenization of physical assets is more conducive to safekeeping. In physical transactions such as gold, it is easy to cause wear and tear and cause losses. However, after tokenization of physical assets, there is no need for physical transfer, which is more conducive to the custody of physical assets.

㈥ Four major highlights in the blockchain field in 2022 | Interface Prophet⑯

There is a core proposition about the "Impossible Triangle" in the blockchain field, namely security sex, performance and decentralization. This proposition is the foundation of the evolution of blockchain technology. Whether it is Bitcoin, Ethereum, or the vigorously developed alliance chain, it is essentially a trade-off between the above three elements.

As Ethereum’s core position among blockchain developers is determined, performance has gradually become a bottleneck for its development. Therefore, in the foreseeable 2022, improvements in performance and efficiency will be a long-term and critical issues.

Based on the Ethereum ecosystem, to improve performance within the limits of the "Impossible Triangle", the current path has been clear. The first one is the Layer 1 level, that is, other public chains share the burden of Ethereum. Data pressure.

One of the major trends in 2021 is the increased use of Layer 1. The space is currently dominated by Solana, Avalanche, Terra and Binance Smart Chain, each with a growing ecosystem. The value has exceeded 10 billion US dollars.

The second type is Layer2, which is based on the Ethereum main network, but transfers settlement to the second layer network.And improve efficiency. This is what Ethereum is working on, Layer 2 is often called rollups because they "aggregate" or bundle transactions together and execute them in a new environment before sending updated transaction data back to Ethereum.

As for the most critical data verification link of the blockchain, Layer2 currently has two technical solutions, one is called "Optimistic rollups" and the other is called "ZK Rollups". Both technical routes have teams developing corresponding networks and have ecological support, such as Arbitrum, which chooses "Optimistic rollups", and dYdX, which chooses "ZK Rollups".

Between Layer1 and Layer2, there is another solution called "side chain", which is partially compatible with the Ethereum main network, but does not belong to Layer2. They are specially used to deal with the excess of Ethereum. capacity, rather than competing with Ethereum as a whole, and hosting Ethereum applications in a complementary manner.

Starting with DeFi, which currently has the most active users, according to statistics from DeFi Lama, the amount of DeFi locked on Ethereum has exceeded 100 billion US dollars, and other public chains such as BSC, Solana, and Avalanche have also Attracting nearly US$49 billion in funds, it has become a very active financial scene.

Although the data of many public chains is quite large, different chains are like data islands, and assets on different chains cannot be freely exchanged. In addition, many emerging public chains are not as developed as Ethereum and lack many foundations. Facilities such as stablecoins, NFT games, and more.

Therefore, assets on other chains need to be introduced into one's own public chain through cross-chain. Among the currently commonly used cross-chain methods, in addition to cross-chain currency withdrawals in centralized institutions such as exchange wallets , the most common ones are various decentralized cross-chain asset bridges.

For cross-chain bridges, the most important issue is how to reach consensus, which is largely related to the security of investors’ assets under custody. For now, the security of centralized exchanges Cross-chain bridges are the most convenient type of cross-chain bridge for users. However, cross-chain bridges in centralized exchanges have the problem of single points of failure. In addition, current cross-chain bridges are gradually moving towards non-custodialization. Development is to further protect the security of users’ assets.

The full name of DAO is "Decentralized Autonomous Organization", which is a management model that attempts to get rid of the traditional bureaucracy and uses blockchain technology to complete autonomous operations. organizational form.

Decentralized Autonomous Organizations (DAOs) can leverage blockchain-based governance to achieve personal globalcoordination. DAOs can be used for many purposes, including managing the operations and capital of a blockchain project (MakerDAO), managing investment capital (The LAO), managing the use of game assets (YGG DAO), coordinating cultural groups (Friends With Benefits), or coordinating purchases Asset (Constitution DAO).

The number of DAOs included in the deep website has reached 187, with total assets under management exceeding US$12 billion and covering more than 1.6 million members. Although in the blockchain field, this is not a huge amount of data. But institutions including Sequoia Capital are beginning to take notice of this new term.

The market value of cryptocurrencies officially exceeded US$2 trillion in 2021 and is now at US$2.5 trillion, an increase of 175% from the beginning of the year. Along with the explosive growth of market value, financing in the encryption field has also increased rapidly. According to statistics, there were 1,529 publicly disclosed primary market financings in the encryption industry in 2021, totaling approximately US$32.6 billion, with a year-on-year growth of an exaggerated 814.2%.

However, equity financing in the crypto field is different from other fields. Under the "VIE" structure, the main exit channel for traditional VC funds is for companies to land on the secondary market for IPO. However, the blockchain field has its own new financing method ICO (banned in China). The key difference of this decentralized financing method is that users can participate in the growth of the community at an earlier stage, while under the traditional venture capital model, only logging in After the secondary market, ordinary investors have the opportunity to share the dividends of corporate growth.

In the field of encryption, first of all, the concept of "company" has been weakened. Due to the existence of "Web3" and "DAO", communities and organizations are more mentioned. Users are naturally interested in There is a sense of distrust in centralized platforms.

The most popular project in the crypto community in the past two weeks is called "OpenDao", which is a project that imitates the leading NFT trading platform "OpenSea". The reason why this project is so popular is that crypto players are interested in "OpenSea" is dissatisfied. "OpenSea" has recently reported that it is conducting a new round of financing and is preparing for an IPO. However, NFT enthusiasts do not want “OpenSea” to become a monopoly platform like the current Internet giants, so “OpenDao” adopts the concept of decentralization and issues airdrops to all “OpenSea” users.

And at the end of 2021, there was a debate in the encryption community about "Web3", including Tesla Chairman Elon Musk and former Twitter executive Jack Dorsey pointing to contradictions during the debate I have learned about venture capital institutions in crypto finance and believe that VCs have gained too much profit.

In 2021, there is also a kind of "DAO""Investment institutions that emerged in the form of "investment institutions". This kind of organization includes investors who are very influential in the community and are deeply involved in the technology field. The performance of the projects they incubate even exceeds the performance of some traditional VCs.

㈦ Explain blockchain in vernacular

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Recently blocked in China Various ICO financial scams do not hinder the vigorous development of blockchain technology. In the final analysis, technology is innocent and can bring benefits to people. As for how to use it, it depends on people to operate it. Good operation You can recommend development and poor operation just like major ICO projects. Find some knowledge for Internet celebrities to conduct so-called illegal fund-raising and financial fraud.

After talking for a long time, what is blockchain? Speaking of blockchain, The first thing that many people think of is Bitcoin. We need to solve a problem. Bitcoin is a blockchain, but a blockchain is not Bitcoin. In short, blockchain is a distributed ledger technology (DLT), and It is not a token. It has many characteristics, such as decentralization, traceability, and difficulty in tampering.

(1) Blockchain is a distributed database

First of all, this is a decentralized distributed architecture system . Therefore, having only one central server or node is not called a blockchain. For example, if you go to Taobao to buy a mobile phone, you and the seller are strangers and have no basis of trust. If you give the money to the seller first, the seller is likely to refuse to ship the goods. If the method blocks you, then your mobile phone money will be gone. If the seller delivers the goods first, will you pay? It is possible that you will not pay the seller after receiving the goods. Anyway, one party may lose money. At this time, a third party is needed Guarantee to solve the trust problem. Just like Alipay now, you give money to Alipay, and the seller will deliver the goods. When you receive the goods, the seller will receive the money.

The above example is a centralized system, because All guarantee work is handled by the third-party payment company Bora. Suppose one day Alipay wants to tamper with the data, neither the buyer nor the seller can do anything because all the permissions are in the hands of one company.

At this time, it is necessary A distributed database. This third party is no longer Alipay, but thousands of monitors. When you buy a mobile phone on Taobao, you will shout to everyone that I am going to XXX to buy a mobile phone, and I paid XXX yuan. The other party will yell like everyone else. They charge XXX’s mobile phone bill and send it over. In this way, everyone knows about the transaction and everyone is recording the transaction, so it is useless if one or two nodes have problems or malicious behavior. Because most nodes have recorded this matter.

(B) Blockchain uses encryption technology to ensure data security

There are two important points here: 1. Encryption with early hash function 2. Asymmetric encryption .

If you are interested in specific concepts, you can go online, but people without basic knowledge may not be able to understand it, because these two points are too professional. In fact, if you onlyTo know how to use blockchain, you don’t need to have an in-depth understanding of it. It is also a technical concept. All you need to know is that blockchain relies on these technical points to ensure data security and is not easily tampered with. Of course, many people say that these two points can guarantee 100% non-tampering. I want to be a little conservative here. As an author who works in the security industry, I have always been skeptical about 100% security, so it may be more appropriate to call it difficult to be tampered with.

I will briefly introduce these two concepts and try to explain them clearly in plain English.

1. Cryptographic Hash Function

This is mainly used to verify the integrity of information. For example, I sent a message to the company leader saying that I was sick on Friday and needed to take a day off. At this time, a hash value will be generated based on the message I sent, such as: 123456. At this point, when the leader receives this message, a hash value is also generated. Because the content of the message I sent has not changed (it has not been tampered with), the hash value remains unchanged, still: 123456. This is if someone wants to tamper with this news and get sick on Friday and need to take a year off. At this time, the hash value will change, such as: 123489. That's when we learned our information had been tampered with.

2. Asymmetric encryption

It is mainly used for information encryption and authentication. It is actually two keys, one is called the public key and the other is called the private key. Public key encryption, private key decryption.

A public key is a key that everyone has. You own it, I own it. We can all encrypt with this key, but when decrypting it must be decrypted with my private key. If you don't have my private key, you can't decrypt it.

(C) The blockchain uses a consensus algorithm to reach consensus on new data.

The role of the consensus algorithm is to enable all nodes to reach a consensus on the new block. In other words, everyone must approve the new block.

For a centralized deployment system, this is simple, everything is controlled by the center, but in the distributed system of the blockchain, it is very complicated. For example, there are three nodes. A said he bought a mobile phone from XXX store and paid for it, B said he didn’t pay, and C said he didn’t pay enough. Then who do you listen to? What's more, blockchain technology is not as simple as three nodes, but a huge distributed system.

This is when a solution is needed. There is a corresponding problem in computer science called the "Byzantine Universal Problem" or "Byzantine Fault Tolerance" (BFT). This question was raised not because of Bitcoin, but because of a special background.

Early aircraft had three independent control systems. Why do we need three independent control systems? For example, in an emergency, there is a plane opposite. How to judge whether you should hide? If there is only one system, there is no choice, which is equivalent to centralized deployment. If the system breaks, you're dead. What if one of the two systems breaks? The good ones are said to hide, and the bad ones are said not to hide. The computer cannot judge the final result. Therefore, three independent systems are needed to support it, and the probability of two total failures is still very small. But this only takes into account injuries. What should I do if there is a malicious system? Is three enough? The answer is no, we need four systems to ensureHold a consensus.

The use of blockchain is similar, because it is supported by a huge number of nodes, and each node is an independent system without interfering with each other. We can assume that the number of failed nodes and malicious nodes is limited, so it will not cause abnormal consistency of data.

Related Q&A: What is blockchain? What is the use?

Blockchain is a new computing paradigm and distributed infrastructure that uses fast chain data structures, distributed node consensus algorithms, cryptography and smart contracts based on automated script code to produce, verify, store and transmit data. It can also be said that blockchain is a distributed ledger technology that can provide a decentralized trust mechanism in a non-trust environment, allowing multi-party participants to conduct secure and trust-based transactions without intermediaries.

The core advantage of blockchain technology is decentralization. It can realize decentralized credit-based transactions in a distributed system where nodes do not need to trust each other by using data encryption, timestamps, distributed consensus and economic incentives. Point-to-point transactions, coordination and collaboration provide solutions to the common problems of high cost, low efficiency and insecure data storage in centralized institutions.

The fields of use of blockchain include digital currency, certificates, finance, anti-counterfeiting and traceability, privacy protection, supply chain, entertainment, etc. With the popularity of blockchain and Bitcoin, many related top domain names have been registered. It has had a relatively large impact on the domain name industry.

Related Q&A: Can you explain to me what a blockchain is in an easy-to-understand way?

Er Gazi is my friend since we were young, and we were naked in Hegou together. Later, I came to the city to study and work, and lived a life as a drifter in the north; he farmed at home and also did some small business, and now he has a son and a daughter, and his life is safe. He envied my so-called "seen the world", and I envied his simple life without the pressure of mortgage loans. We have completely different and mutually enviable lives??

That day, Ga Zi came to me on WeChat and asked "District" What is a blockchain?" I was stunned for a moment, how could this idiot care about such an avant-garde word? I pretended to be calm and prepared to talk about the technical principles bit by bit, but I could see the confused expression of that idiot through the screen of my mobile phone. How to explain "what is blockchain" to people who have a little bit of Internet concepts and technical foundation? This seems to be a very thorny problem??

The village commissary interprets the core of blockchain (picture quoted from the Internet)

The core essence of blockchain is "decentralization", and almost all operating modes of blockchain operate around the concept of "decentralization". Once you understand what "decentralization" is, you can basically explain the question "what is a blockchain?" For Erga, of course, he must perform a version that he can understand.

“I said, Gazi, are you still open that canteen at the east end of the village?” Gazi answered yes. I decided to use this canteen as an example to explain the actual use of blockchain in modern business and financial models. Scenario, so that he can better understand what blockchain is.

"Are there still many villagers who take credit now? Will there be any by the end of the year?I can’t even keep track of my accounts clearly. Are there still many defaulters or those who refuse to accept their accounts? " At this point, Ergazi got emotional and kept complaining that people are not as old as they used to be and business is hard to do!

"In the past, the operation mode of your canteen was a typical centralized one. You gave credit to the villagers and all the accounting was done. They are all directly connected to our villagers through you, and you are the center of all accounts. " Ergazi said he understood and let me continue.

I said: "If you fail one day, then all the debts will become dead debts? It is estimated that it will be difficult to get back the IOUs written in black and white. Forget about remembering those accounts orally, but the decentralization of the blockchain can solve this problem very well. As long as the earth still exists, then the blockchain will remember that every account will exist forever." Erga became more energetic after hearing this.

The essence of the blockchain is "decentralization"

"The The essence is decentralization. Once someone takes credit from you, all the neighbors in the village will help you keep accounts. Because there are many nodes for accounting, it is neither easy to make mistakes nor others can refuse to pay, so everyone reaches a consensus. If someone maliciously fails to repay the debt, the whole village will know his character, and no one will be willing to have financial dealings with him in the future??"

At this point, Gazi was obviously a little excited. It seemed that he was I was really worried about the credit issue. Seeing that Gazi was interested, I also felt a small sense of accomplishment and continued: "Of course, the above is just an analogy. In fact, the blockchain does not really allow villagers to get paper. The pen helps you keep accounts, but it is done through the Internet and computer networking. "

At this time, Gazi was a little confused and asked: "Then what others bought from me, wouldn't everyone in the village know it? Then who would buy things from me? There is really no privacy at all. And you don’t have time to keep accounts here. Last year’s accounts are said to be this year’s. What if you keep procrastinating? "

"Okay, Gazi, your question is on point. "It seems that Gazi is not stupid at all, and he is very shrewd in doing business. I continued to explain: "So, the recording and transmission of this information are all done through encryption. What you see is a picture of numbers and English. String, and each account has a timestamp to record the time of occurrence, which cannot be relied on. "

Gazi had another question: "Is it possible that the people who owe the debt have a good relationship with the villagers, and they join forces to tamper with the accounting? Then you won’t be able to explain clearly at that time??”

“Gazi, that’s all you have, haha. "I understood Gazi's concerns and continued to explain: "The mechanism of the blockchain requires more than 51% of people to agree to tamper with a bill. Everyone has a degree of closeness and distance between them, and it is impossible for everyone to favor the same person. If it were a computer, more than half of the computers on the entire network would need to recalculate. This project would be so huge that it would be almost impossible to complete??"

In this way, through the actual situation of the canteen and combined with some scenes in life, Gazi understood What is in the blockchain: decentralization, distributed accounting, consensus mechanism, encryption mechanism, timestamp, and the characteristics of being difficult to tamper with.

Ergazi was silent for a moment, as ifHe seems to be digesting the example I gave him just now, and I don’t know how much he can understand it. Not long after, he sent me another voice message on WeChat: "What does blockchain mean? In the past, when I bought goods online and paid for them, I had to go through Jack Ma's house. If there is a blockchain, can it be done directly?" When trading with sellers, bookkeeping is very safe anyway."

"Okay, Gazi, it's really clear. Blockchain is essentially a decentralized distributed ledger data cloud. Of course, it can be understood as you understand it. "." I am very happy that Ga Zi can roughly appreciate the true charm of blockchain. Fortunately, my words have not been in vain.

What is Bitcoin? (Picture quoted from the Internet)

"Then what is Bitcoin? What does it have to do with the blockchain?" Gazi asked.

I thought about it briefly and decided to continue explaining the story of the canteen to Gazi: "In your canteen, the villagers can't keep accounts for you for free all day long. Do you have to bring something to visit during the holidays? Yes, this is the reward mechanism of the blockchain, and everyone who participates in bookkeeping may receive rewards."

"Then what are the rewards based on? There must be a rule, right?" Gazi asked very puzzled.

I explained: "Zhang San went to your store to buy a pack of cigarettes on credit, but Li Si knew about it first and kept an account for you first. Then other people knew about it and started keeping accounts. Then Li Si could get A small red flower as a reward ~ This little red flower is generated by the blockchain system and has no value in itself, so you do not need to pay any cost for this little red flower??"

"Then Bitcoin can be used as money Flowers? How is it different from the banknotes we usually spend?" Gazi continued to ask.

"Bitcoin is a digital encrypted virtual currency. In principle, it has no value itself like our banknotes. However, banknotes have the country as a credit guarantee, so they have value. Bitcoin is the Bitcoin network The value formed by consensus among users has tradable attributes, so it can be used to carry value." What is said here is a bit profound, I don't know if Gazi can understand it.

I continued to explain: "Banknotes can be printed infinitely. If you print too much, inflation will occur. When we were young, popsicles costing 1 cent were very good. Now we cannot eat them for 1 yuan. Of course, there are factors that affect inflation. A lot. The number of Bitcoins is fixed, and there is no possibility of unlimited over-issuance. However, different people have different judgments on their value, coupled with the influence of supply and demand and investor sentiment, so its price is always fluctuating. ."

What is the difference between Bitcoin price fluctuations and stocks?

"So speculation in Bitcoin is speculation in stocks? Can you understand it that way?" Ga Zi seems to know a lot.

"Actually, there are some similarities, but there are also big differences." I continued Gazi's topic: "The price of stocks always fluctuates around the valuation of the company, and there is government supervision in the stock market. And Bitcoin It has no value in itself. It is priced entirely based on supply and demand and player valuations. It grows wildly and has no government supervision at all. Therefore, compared with stocks, there may beHigher risks and higher returns. "

In the end, Gazi revealed the real purpose of today. He asked me: "Can I invest in blockchain projects? ”

Gazi is a typical example of those who don’t go to the Three Treasures Hall for anything. Although there is a large circle of people who are involved in both blockchain and Bitcoin, in fact, what he really cares about is “blockchain project investment” Is it reliable? "When these words came out, I was extremely shocked. Now the so-called blockchain investment projects have actually reached fourth- and sixth-tier cities and small towns!

As of now, there are only three types of blockchain investments. Situation: Mining, currency speculation, so-called blockchain projects.

Mining and currency speculation are still the main lines of the blockchain (pictures quoted from the Internet)

The so-called mining means mining by purchasing mining machines, etc. Equipment, mine virtual currency, and then sell it for cash to get returns. You can install the mining machine yourself, or you can find a mining pool to host it, but the core keys to profitability are "computing power" and "power consumption" as well as Investment in equipment. With the sharp drop in the price of virtual currencies and the increase in mining difficulty, the current mining returns of many currencies are very unsatisfactory. Mining is obviously only a very small number of investors who understand technology can play successfully. I My childhood friend Gazi obviously can’t play with it.

As for “coin speculation”, I have just introduced some differences between Bitcoin and stocks in the previous section. In principle, although they are both “buy low and sell high” operations , but there is a huge difference. Ordinary investors cannot determine the value of a virtual currency itself, and the price is determined entirely by the relationship between supply and demand, which is somewhat similar to what we often call "market makers." On the other hand, the virtual currency trading market is extremely Irregularities, theft and hacker attacks often occur, and the risk factor is much greater than investing in stocks. For the safety of my friends' funds, I am one of the ten thousand people who disagrees with "coin speculation"!

"September 4th" It is illegal to issue virtual currency

In fact, in my opinion, most of the so-called investment projects in the market are essentially "illegal fund-raising" and "pyramid schemes." Some so-called blockchain investment projects use various The packaging and inflammatory rhetoric attract investors into the circle, and then create the illusion of profitability by building a software and hardware ecosystem of issuing new coins + mining + currency speculation, and then finally run away. Our country's laws clearly stipulate that the issuance of virtual currencies is illegal.

Illegal pyramid schemes now wear the cloak of blockchain (picture quoted from the Internet)

And how to identify some pyramid schemes under the guise of blockchain? In fact, these pyramid schemes are also so-called Ponzi schemes. , what we ordinary people often call "empty gloves". These so-called "direct sales" or "marketing" activities often have no actual products to circulate, and rely more on the development of "offline" to ensure top-level profits. As the district With the rise of the concept of blockchain, this MLM model has shown an intensification trend, and even deceives people under the banner of state support for new technologies.

When Gazi asked the question "Can blockchain projects be invested?" "When I saw this, I realized the seriousness of the problem. Gazi is a typical young man from a small town, and his pursuit is to have a wife and children on the hot bed. But in the face of "wealth"Attracted, people tend to do inappropriate things. Mining and currency speculation are simply not suitable for him, let alone blockchain investment projects that are most likely "illegal financing" or "illegal pyramid schemes"!

I quickly called Gazi and carefully conducted the above analysis??

What are the characteristics of blockchain projects that can double investment

I saw a message last night that many Chinese people were cheated because they invested in virtual currencies and then went to Malaysia to defend their rights. This news has been compiled into an article and published. There are so many such things, they happen almost every day, and countless people want to embrace the blockchain and are led into the pit of virtual currency. When most people talk about blockchain, they confuse it with virtual currency. This is a cognitive error. This understanding will lead people into a ditch. Many people are deceived into making virtual currencies. Most of the reasons are due to the lack of understanding of blockchain. I don’t have a deep understanding of the chain.

The rising cost of living, soaring housing prices, and many uncertainties about the future will make people feel the pressure to make money. Under the current situation, most people do not have many sources of income, so they are looking for some investment opportunities, which is understandable. Blockchain represents the future trend. Investing in blockchain is basically equivalent to a guaranteed income. This is not an exaggeration. However, at least you have to understand what blockchain is and what virtual currency is, right? If you act rashly, you will definitely get a bloody head.

What exactly is blockchain? Don't check the Internet. Blockchain is actually a financial solution. Of course, for better understanding, you can also say it is financial technology. How to say this? To operate a company, you can use traditional financing and listing solutions, or you can use blockchain solutions. Do you understand? It's just a choice, nothing more.