区块链杀手级应用,区块链 手机

随着科技的进步，区块链技术已经被广泛应用到各个领域，其中最具杀手级应用的是区块链手机拓展。区块链手机拓展是一种基于区块链技术的应用，它可以通过建立一个安全、可靠的去中心化网络来解决传统移动拓展的许多问题。

一、区块链手机拓展的优势

区块链手机拓展拥有许多优势，首先，它可以有效地解决传统移动拓展中的安全问题。由于区块链技术的去中心化特性，可以有效地防止数据泄露和攻击，从而确保用户的数据安全。此外，区块链技术也可以提高拓展服务的可靠性，可以防止网络中断和拓展服务中断等问题，确保拓展服务的正常运行。

二、区块链手机拓展的应用

区块链手机拓展的应用非常广泛，可以用于支付、身份认证、数据存储等方面。首先，可以用于支付，用户可以通过区块链技术实现安全的支付，而且可以实现跨境支付，极大地提高了支付的便捷性。此外，还可以用于身份认证，用户可以使用区块链技术将自己的身份信息存储在区块链网络上，这样可以有效地保护用户的身份信息安全，避免被盗取或篡改。最后，还可以用于数据存储，用户可以将自己的数据存储在区块链网络上，这样可以有效地保护用户的数据安全，避免被破坏或篡改。

三、区块链手机拓展的未来

区块链手机拓展的未来前景非常乐观，随着科技的发展，区块链技术将在移动拓展领域发挥更大的作用。未来，区块链技术将被广泛应用于各个领域，比如金融、医疗、教育等，从而改变人们的生活方式。此外，区块链技术也将成为未来移动拓展的主流技术，可以有效地解决传统移动拓展中的许多问题，极大地提高了拓展的安全性和可靠性。

总之，区块链手机拓展是一种具有杀手级应用的技术，它可以有效地解决传统移动拓展中的许多问题，极大地提高了拓展的安全性和可靠性。未来，区块链技术将成为未来移动拓展的主流技术，将为人们的生活带来更多的便利。

㈠ Hot! Create and play with your own blockchain in 5 minutes

Blockchain is developing so fast this year! From an unfamiliar concept at the beginning, it has now taken off in various industries. A single spark has the potential to start a prairie fire. I really hope I can have my own blockchain to practice with! But how can one person and one computer set up a blockchain environment? The blockchain is so popular that it is not easy to say that I love you!


Don’t Worry! The editor has been addicted to blockchain and smart contracts and can’t extricate himself! Now I will take you step by step to start from scratch and create your own blockchain in 5 minutes! ~
The SuperVessel platform developed by IBM China Research Institute provides a blockchain development and testing environment for blockchain enthusiasts and developers. Through this platform, users can create multi-node blockchains based on Hyperledger Fabric for free and super quickly, and play with smart contracts on their own chains.
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0.
Preparation
All you need is your local browser!
1. Register an account
Access the public beta address of SuperVessel blockchain service: 8800/bc.
Click the Log in button in the upper right corner, click Register in the pop-up window, fill in your email and password and submit. At this time, it is recommended to check the activation email in your mailbox and activate your account (Editor's tip: It doesn't matter if you activate lazily, but some advanced services must be activated before they can be used).
2.
Quickly create your own blockchain
After registration is completed, return to the homepage and click on the huge GIVE ME A BLOCKCHAIN ​​(Give me a blockchain!) button. Select the Consensus Plugin (consensus plug-in) and Size (number of blockchain network nodes) you want in the pop-up box.
Editor's note: Currently there are two consensus plug-ins officially provided by Hyperledger Fabric: noops and pbft.
After clicking Submit, you will get your own blockchain in a few seconds and automatically enter the monitoring panel. That’s right, getting your own blockchain is that simple!
After entering the monitoring panel, you can see that the left side is the smart contract management panel, including the management and deployment of smart contracts; the right side is the network panel, which displays the applied blockchain network status, topology, and connections between nodes. Latency information, etc. are clear at a glance; click the telescope icon in the upper right corner to monitor the log information of each node in real time. The bottom is the blockchain panel, which shows the overall situation of the current blockchain. In the initial state, there is only one block.
3. Deploy and use smart contracts
Next, the editor will teach you how to deploy smart contracts in your ownDeploy and use smart contracts on the blockchain.
Under the Smart Contracts tab of the smart contract management panel, 2 smart contracts are listed as examples, namely map and chaincode_example02. The map contract can store key-value pairs, and the chaincode_example02 contract can simulate transfers and queries between two people.
Editor's note: The code for these two sample contracts can be found in the Hyperledger Fabric source code.
Take the deployment and use of the chaincode_example02 contract as an example:
Deploy the contract
Click the Deploy button corresponding to the chaincode_example02 contract, and fill in the initialization value of the contract, including the contract name, initial function, and initial parameters. The initial function of the contract is init, and the initial parameters need to be filled in according to the format, such as ["a", "100", "b", "200"], which means registering two people a and b, giving them 100 units and 200 units respectively.
Click the Deploy button and the contract will be deployed in your blockchain. The process will take about 20 to 40 seconds. When a new block appears on the blockchain panel, it usually means that the contract has been deployed.
Call the contract
After the deployment is completed, view the deployed contract instance under the My Deployment tab of the smart contract management panel.
Click the Invoke button below the Action to call the smart contract, and fill in the called method name and corresponding parameters (the method names and parameters of different contracts have different meanings, which are related to the content of the contract). For this contract, call the invoke method name and fill in the parameters ["a", "b", "50"], which means a transfers 50 units to b.
After clicking Submit to complete the call, you can view the blockchain situation and a new block will be generated.


Query Contract
After the call is completed, you can query the contract execution results. Still under the My Deployment tab, click the Query button under Action to query the smart contract, and fill in the query method name and corresponding parameters. If you select the query method name and fill in the parameter ["a"], it means querying the current unit of a.
After clicking Submit, you can see that the current unit of a is 50. You can try query b again!
OK, then you can continue to operate the contract, observe the blockchain situation, or deploy a new smart contract, such as map, on the blockchain. For ease of use, the method names and parameter formats for deploying, calling, and querying contracts are all filled in by default. You only need to select a method name and change the parameters as you like! See if you can play with the chainHow long~
4. Upload and test your own private smart contract
In addition to the two public smart contracts currently provided, you can also upload and test your own private contract! Private contracts can only be seen by you.
Click Import private smart contract under the Smart Contracts tab.
After filling in the contract name and description, and uploading the contract code file, click Import to complete the upload.
Then the contract I uploaded will appear in the Smart Contracts list and can be deployed, called and queried as before.

㈡ How are the blocks in the blockchain connected?

Experts said that the blockchain can be commonly understood as a distributed public ledger. The ledger is composed of blocks connected into a chain. In traditional accounting systems, accounting rights are in the hands of the central server.

On the "ledger" of the blockchain, every point in the chain can record information on it, forming a point-to-point accounting system. Therefore, blockchain technology is considered a decentralized technology.

For example, in a village of 100 people, Zhang San bought a cow from Li Si and paid him 10,000 yuan. In the past, he had to rely on the middleman Zhao Liu to transfer his 10,000 yuan to Li Si.

With the blockchain system, Zhang San can directly record his 10,000 yuan into Li Si’s account book, and at the same time, the transaction information will be transmitted to the whole village, that is, the entire blockchain system. Make the information visible to 98 other people. The system records the entire transaction process, which has the advantage of traceability and prevents problems such as the loss of Zhao Liu's account book or Li Si's refusal to acknowledge the account.

(2) Use blockchain to connect the hands of the chopping party. Extended reading

In 2008, Satoshi Nakamoto proposed the blockchain for the first time. The concept of blockchain, which in subsequent years became a core component of the electronic currency Bitcoin: serving as a public ledger for all transactions. By leveraging peer-to-peer networks and distributed timestamp servers, blockchain databases can be managed autonomously.

The blockchain invented for Bitcoin made it the first digital currency to solve the problem of repeated consumption. Bitcoin's design has become a source of inspiration for other applications.

㈢What effect does blockchain have on real life

Blockchain is essentially a disintermediated database that uses a blockchain data structure to verify and store Data, a new distributed infrastructure that uses distributed node consensus algorithms to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses smart contracts composed of automated script codes to program and operate data. and calculation method. In layman's terms, blockchain is a distributed accounting technology, which has the characteristics of decentralization, non-tampering, and node consensus mechanism. Although it sounds a bit obscure, it can actually bring tangible benefits to our daily lives:
First, blockchain technology can be used to establish a traceability mechanism for food and vegetables, to completely eliminate source pollution of food and vegetables, and to provide people with safe, hygienic, green food and vegetables, so that everyone can buy them with confidence and eat with comfort;
Second, we can use regional Blockchain technology stores various ownership certificates and notes and transcripts, completely eliminating the occurrence of fake certificates, fake archives, fake academic records, fake medical records, fake transcripts and other fraud incidents;
Third, blockchain technology can be used to conduct community election voting, completely eliminating the occurrence of fake Votes are truly open, fair and impartial. Build a democratic community and achieve democratic governance.
In addition, blockchain technology can also be used in many aspects of daily life such as charity fundraising and commodity anti-counterfeiting.

㈣ 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.
[I know about Ping An Bank] Want to know more? Come and see "I Know Ping An Bank"~
https://b.pingan.com.cn/paim/iknow/index.html

㈤ What is blockchain, block What is the role of a chain?

What is a blockchain? What changes will it bring to your future life?Change?

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms.

Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of related cryptographic methods. Each data block contains a batch of Bitcoin network transaction information, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block.

In the original English version of the Bitcoin white paper, the word blockchain does not actually appear, but chain of blocks is used. In the earliest Chinese translation of the Bitcoin white paper, chain of blocks was translated into blockchain. This is the earliest time when the Chinese word "blockchain" appeared.

The Cyberspace Administration of China issued the "Blockchain Information Service Management Regulations" on January 10, 2019, which will come into effect on February 15, 2019.

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-tamperable. Unforgeable distributed ledger.

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 data transmission and Access security, a new distributed infrastructure and computing method that uses smart contracts composed of automated script codes to program and operate data.

In fact, to understand it very simply and vividly, we can imagine that everything in life is realized in digital form, including food, clothing, housing, transportation, medical treatment, education, etc., based on the Internet, it can be easily done at home Get it done, no matter where you go to do business or trade, you can completely operate it with your mobile phone. With the continuous development, everything we do can be easily completed online, such as volumetric work, production, planting, etc. Of course, the rise of 5g will bring about the end No one can accurately predict what it is now, but it will definitely bring about earth-shaking changes in life and social form!

Blockchain was born from Satoshi Nakamoto’s Bitcoin. Since 2009, various Bitcoin-like digital currencies have appeared, all based on public blockchains.

The current situation of digital currencies is that a hundred flowers are blooming. Here are some common ones: bitcoin, litecoin, dogecoin, OKcoinetc. In addition to currency applications, there are also various derivative applications, such as NXT, SIA, and BitShares. , MaidSafe, Ripple, Ethereum and so on.

On January 20, 2016, the People’s Bank of China Digital Currency Seminar announced that it had achieved phased results in digital currency research. The meeting affirmed the value of digital currency in reducing the issuance of traditional currency and stated that the central bank is exploring the issuance of digital currency.

Some areas where blockchain can be used can be:

▪ Smart contracts

▪ Securities trading

▪ E-commerce

▪ Internet of Things

▪ Social communication

▪ File storage

▪ Proof of existence

▪ Identity verification

▪ Equity crowdfunding

The development of the blockchain can be compared to the development of the Internet itself. In the future, there will be an Internet called finance-internet, and this thing is based on blockchain, its precursor is bitcoin, that is, traditional finance starts from private chains and industry chains (local area network), and the bitcoin series starts from public chains (wide area network), both expressing the same The concept of digital assets (Digital Asset) eventually converges to an intermediate equilibrium point.

The core advantages of the blockchain architecture include:

Any node can create a transaction, and after a period of confirmation, it can reasonably confirm whether the transaction is Effectively, blockchain can effectively prevent problems from happening on both sides. The cost of trying to rewrite or modify transaction records is very high. Blockchain implements two types of records: transactions and blocks. Transactions are the actual data stored on the blockchain, while blocks are records confirming when and in what order certain transactions became part of the blockchain database. Transactions are created by participants using the system in the normal course (in the case of cryptocurrencies, a transaction is created by Bob sending tokens to Alice), while blocks are created by what we call Units of miners are responsible for creation.

So in conclusion, this is undoubtedly a new technology that changes life. In the future, the production activities of the entire society will be carried out with blockchain as the underlying logic, and many things will be within our reach. , coupled with the integration of artificial intelligence and big data, we can easily handle things that seem to be complicated now., such as some securities market transactions, and intelligent matching of financial management activities.

To put it simply, blockchain is a network computing center that integrates people, property, machines, and goods, and packages it into a whole; putting it on an infrastructure and running it in a network computing center .

Now the author’s imagination is not big enough to imagine what the future world will be like. I am looking forward to it!

I know a thing or two about this issue. Let’s get to know this mysterious thing - blockchain.

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms. Blockchain is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of data blocks generated using cryptographic methods. Each The data block contains information about a batch of Bitcoin network transactions, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block

The more popular it is, the more fake it is to keep the real. First of all, we must first figure out what the real blockchain technology is.

As an example, take buying fruits online.

The process of purchasing fruits online is as follows:

Using blockchain technology and decentralization, the process of purchasing fruits is as follows:

Summary:

1. We found that the original transaction process is: buyers make transactions with sellers, and all key processes are dealing with the payment platform. The advantage of this is that if there is a problem in any link, both sellers and buyers can seek help through the platform and let the platform arbitrate. However, a major bug or hacker attack occurs on the platform, resulting in the loss of all transfer records within a period of time. How to deal with the loss is a troublesome matter.

2. The transaction process using blockchain technology is: everyone’s ledger has exactly the same transaction record. Even if Alipay’s ledger server is broken, the seller’s ledger still exists, and the buyer’s ledger still exists. Still exists. Once this transaction occurs, the traces will never be erased.

This is the core of the blockchain, which is the four words "accounting + accounting".

The development and maturity of blockchain technology are inseparable from the foundation and foreshadowing of the above new generation of Internet technology. Blockchain is not only a technology, but also provides a service model and solution. , which has played an extremely important role in promoting the further development of the Internet industry.

1. Blockchain + Finance

2. Blockchain + Supply Chain Management

3. Blockchain+Intelligent Manufacturing

4. Blockchain + Public Services

5. Blockchain + Education and Employment

6. Blockchain + Culture and Entertainment

7. Blockchain + payment

8. Blockchain + invoice {Already enabled in Shenzhen}

Traceability of blockchain And the non-tamperability, combined with the inherent nature and needs of the financial industry, makes the application of blockchain in the field of financial services the most in-depth and relatively mature field so far. Blockchain technology has broad application prospects. The future technological competition will also be a blockchain competition.

It is important to understand blockchain, which is important to see through various pseudo-blockchain scams.

If someone uses a bunch of professional terms to explain blockchain, it will be difficult for you to understand, and they may not really understand it themselves.

Therefore, we first establish a psychological line of defense. Anyone who sells you concepts and uses a lot of unfamiliar technical terms may be a liar. Be very careful!

To understand blockchain, you must know what the core appeal of blockchain is. What do you think you are most worried about in today's highly developed Internet world?

Privacy, yes, privacy. How to protect privacy? You may be monitored at any time, and any of your personal information may be stolen at any time. If personal privacy is not absolutely protected, the Internet will become another pyramid of power. Who is standing on top of the pyramid? He is the smartest technical master, a platform provider, and an information regulator. You and I may be the people at the bottom of this pyramid.

The people who originally invented the blockchain had serious concerns about being completely swallowed up by the Internet, and tried to create an absolutely safe encryption technology to lock up personal privacy. This technology completely subverts traditional encryption technology. In fact, rather than locking up privacy, it is better to tear it into pieces and then distribute the pieces to different people for private keeping. Unless everyone agrees to take the pieces and piece together the complete code, the truth cannot be recreated. This is the first mechanism of blockchain, which is decentralization.

But decentralization alone is not enough. It is also necessary to make those who steal password fragments have nowhere to hide, so that every action of the thief can be recorded indelibly and posted everywhere on the Internet. Diffuse and make it public. This is the second mechanism of the blockchain, the non-anonymous mechanism. Do you think, who snoops into privacy is not sneaky?

In summary, the blockchain is to hide privacy in a decentralized manner, record any actions that reproduce this privacy, and make it public. Seeing this, you may want to applaud the blockchain. Don't worry, there is nothing so good in the world? Is there any utopia that is absolutely safe? If blockchain can be realized in an absolute sense, will the existence of the government still make sense? Yes, blockchain was originally the embodiment of anarchy. Its ultimate meaning is destined to never be realized. Its survival may have to rely on power, and it is destined to become another beautifully packaged lie and a pretense to deceive people. In this sense, the government must also specify a framework for the development of the blockchain, reconstruct the value of the blockchain, and drive out the anti-government and anti-national attempts contained in the blockchain. Some blockchain technologies can be used in concrete applications, but decentralization must not be promoted. In short, we must remain highly vigilant about blockchain. Beauty often hides its sting. Absolutely ideal recipes often turn out to be poison. The person who says he can absolutely protect your privacy and financial security is the real voyeur and vampire.

Perhaps the best way for us to protect privacy is not to have any privacy, to live a completely open life, either to live like a sun or to live like a god of wine.

Viewpoint: 1. The concept of blockchain originated from the technical attributes of Bitcoin (distributed data storage and accounting, decentralization, inability to tamper with transaction records, point-to-point information transmission, sharing mechanism...), but Later, some people continued to extend and expand the concept to many commercial fields to facilitate capital speculation. 2. Blockchain in reality (the current blockchain on the market is very confusing), the hype concept is mostly used to make money in the stock market, and there is still a lack of regulatory loopholes. , legal and regulatory issues, etc., and even money laundering (the actual operation of blockchain products is one thing, the capital operation behind it is another). At present, the computer systems around the world cannot meet the characteristics of blockchain attributes. Technical requirements (such as distributed data storage and accounting, decentralization...), network bandwidth, storage technology and computer computing systems cannot meet transaction operation requirements (it is easy to use computer technology to make your network clogged or unable to complete distribution) There are risks arising from practical applications such as formal data storage or transactions being interrupted or delayed at any time. In addition, as far as the current global computer system is concerned, it is easy to crack the underlying program of the blockchain (this is a fatal flaw in the current global computers, 0 and 1 binary logic In addition, if the reverse blockchain mode calculation algorithm is used, it is very easy to crack the blockchain. This reverse calculation mode can also completely tamper with all transaction records. If a true quantum computer becomes available in the future, it can directly break all blockchain computers in seconds. System, Bitcoin mining is a Ponzi scheme, 3. Most of the blockchains currently on the global market are basically capital speculation concepts to make money.

The concept of blockchain has been around for several years. , I heard a blockchain boss say at the beginning of last year that 2018 is the best year for the development of blockchain. After this year, foreign development will fall behind. What is blockchain? In terms of impact, it is like a pig. The large intestine is connected section by section. Blockchain is to connect these blocks together and fix them, using computer and Internet encryption technology to prevent secrets from being leaked to the outside world. This technology cannot be passed through professionalThe terminology is generally incomprehensible to non-experts. It can only be explained with an analogy. Let me give you two examples:

1. Four people, A, B, C and D, play mahjong and gamble in a mahjong parlor. They use chips for each game and settle the bill at once when they break up. A loses 1,500 yuan and B loses 300 yuan. Yuan, C won 200, and D won 1,600. As a result, A only has 1,000 yuan, and everyone else has sorted it out, but A still owes D 400 yuan. Only these four people know about this matter, and these four people are one block. There is no proof for what he says, and he doesn’t know how to write an IOU for this kind of thing. What will happen if A doesn’t pay back the money in the future? Except for the four people A, B, C and D present, no one else knows about this. If A wants to default on the debt and says that he does not owe money at all, only three people, B, B, D and D, know that A is defaulting on the debt. It is difficult for others to judge whether A owes money and refuses to pay it back. Therefore, the value of blockchain needs to expand participation. What if these four people were playing mahjong and a dozen friends were watching? Isn’t the cost of defaulting on the loan high? This is real life block. What about extending to the Internet? Then there are endless possibilities and there are many scenarios.

2. If four people, A, B, C and D, do business in a business group of 500 people, this group of 500 people is a big block. Once, A asked B for 10,000 yuan of goods, but did not pay B in time. A said at that time that he would pay B within 3 days. Everyone in the group knows this. If A fails to send money to B within 3 days, then the other 498 business partners in the group will know about it. If A defaults on the debt, his reputation in this business circle will be ruined. affected. This is a block.

Later, A wanted to do business with C. C asked A for goods. A said that you should pay a deposit of 5,000 yuan and the goods will be shipped immediately. C paid 5,000 yuan to A, but A was delayed. Not shipping, everyone in this group knows, this is another block. When the two blocks are connected, everyone doubts A's credibility. How many times have you done this? Will Mr. A continue to play in the future? This is the value of blockchain.

Blockchain may seem complicated, but it is not complicated at all; it may seem simple, but it is actually very difficult to operate. The blocks are too small and meaningless. If a block wants to grow bigger, privacy and business secrets will be involved. For example, it is inconvenient to talk about falling in love in a large group; for example, it is inconvenient to discuss it publicly in the group (block) beforehand when working together to do big business. However, there are still occasions when blockchain technology is used, such as poverty alleviation work, disaster relief fund management, etc. It is exposed to the sun and everyone knows it and supervises each other. I’ve given these two examples. Do you understand them at all?

[The most core and easy-to-understand introduction to blockchain]

1. How does blockchain create trust? We use "1", "2", and "3" to summarize the characteristics of the blockchain:

- "1" summarizes the blockchain: a trusted distributed database;

- "2" core properties: distributed, non-tamperable;

- "3" key mechanisms: cryptography principles, data storage structure, consensus mechanism.

The "distributed" and "non-tamperable" properties ensure the "honesty" and "transparency" of the blockchain, which is the basis for the blockchain to create trust.

2. In terms of industry, it is expected that the financial industry will be dominated by the financial industry in the next 3-5 years, gradually radiating to other real industries, more realistic scenarios will be accelerated, and the industry will develop from "1 to N" to Including entertainment, product traceability, credit reporting, etc.

In the future, in addition to using technologies such as side chains, lightning networks, and cross-chains, blockchain will also need to be deeply integrated with emerging information technologies such as 5G, artificial intelligence, big data, and the Internet of Things to enhance the Technical performance and off-chain data quality and reduce resource waste.

3. Smart contracts may be the most revolutionary application on the blockchain. If smart contracts are widely used on the blockchain, the economic division of labor will be further refined in the Internet era. Network nodes around the world will directly connect demand and production, and broader social collaboration will be realized.

If the above vision is realized, the combination of blockchain technology and industry is expected to usher in an explosive moment "from 1 to N". Its explosion may not be linear but non-linear. Blockchain Only then can the chain be upgraded from a "trust machine" to an important "engine" leading the industry wave.

Decentralization. Prevent cheating. It used to be that one person kept accounts and could make changes. Now there are 50 people. Each person records an entry and everyone has a record in the account book. Can you make changes to all 50? All 50 ledgers are valid unless they are all changed. So it's very useful.

I saw many people answering that ordinary people cannot understand intuitively. Let me explain simply and clearly, blockchain is decentralized. When something happens, everyone writes it down and has their own password, which cannot be tampered with.

Even if a hacker wants to change it, he has to do it one by one, which will tire him out. In fact, it is impossible, at least for now.

Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithms.

Blockchain originated from Bitcoin and is an important concept of Bitcoin. It is essentially a decentralized database. As the underlying technology of Bitcoin, it is a series of cryptographic methods. The associated data blocks are generated. Each data block contains a batch of Bitcoin network transaction information, which is used to verify the validity of its information and generate the next block.

Blockchain has potentially huge application value in financial fields such as international exchange, letters of credit, equity registration and stock exchanges. Blockchain technologyThe application of this technology in the financial industry can eliminate the need for third-party intermediaries and achieve direct point-to-point connection, thus greatly reducing costs while quickly completing transaction payments.

After reading so many expert advices, I am still confused. I only remember that someone used this so-called "blockchain" to do pyramid schemes in the past...

㈥ What disruptions has blockchain brought and why has it become a national strategy?

The disruptive characteristics of blockchain lie in the following four aspects: 1. Transparency. The data records of the blockchain system are transparent to the entire network nodes, and the update operations of the data records are also transparent to the entire network nodes. This is the basis for the trust of the blockchain system. Since the blockchain system uses open source programs, open rules and high participation, blockchain data records and operating rules can be reviewed and traced by nodes throughout the network, with high transparency.
2. Openness. The blockchain system is open. Except for the private information of the parties directly related to the data, which is always encrypted, the blockchain data is open to everyone (except for blockchain systems with special permission requirements). Anyone or participating nodes can query blockchain data records or develop related applications through the public interface, so the entire system information is highly transparent.
3. Information cannot be tampered with. Once the information of the blockchain system is verified and added to the blockchain, it will be permanently stored and cannot be changed (except for systems such as private blockchains with special change requirements). Unless more than 51% of the nodes in the system can be controlled at the same time, modifications to the database on a single node are invalid, so the data stability and reliability of the blockchain are extremely high
4. Decentralization. Decentralization is the most basic feature of blockchain, which means that blockchain no longer relies on central processing nodes and realizes distributed recording, storage and updating of data. In a traditional centralized network, attacking a central node can destroy the entire system. However, in a decentralized blockchain network, attacking a single node cannot control or destroy the entire network or more than 5% of the nodes in the network. It's just the beginning of gaining control. 2019 is the first year of commercial application of blockchain technology, and favorable policy incentives will make the development of blockchain technology more stable.
As the application of blockchain technology gradually penetrates into many fields such as digital finance and the Internet, everyone has a clearer understanding of the value of blockchain.
Blockchain has formed a global competition situation. All countries are seizing development opportunities, and China cannot lag behind; therefore, it is understandable that blockchain has become a national strategy.

㈦ The three founders of π coin and the businessman

The first thing everyone thinks of π coin is Nicolas Kokkalis, the founder and technical leader of Pi. Nicholas used He has been planning π coin for more than ten years. Combining his rich knowledge of blockchain, extensive contacts and the skills of many blockchain students, he has used unique blockchain insights to break through the bottleneck of existing blockchain currency speculation. ,Officially applying blockchain to circulation, through bold planning, we want to use π currency to replace fiat currency as the hard circulation and the only circulation medium in the entire π ecosystem, completely creating the blockchain 3.0 era. All countries in the world are closely connected through π currency. Through the free π mining model, anyone can get π coins for free. Through the parallel one-level mutual assistance and equal promotion model, everyone can almost have the same number of π coins, preventing too many π coins from being concentrated in the hands of a few large households. , and also embodies the fair competition mechanism of more work, more gain, less work, less gain, and no work, no reward. Unlike some projects that have a ten-level or unlimited generation promotion model right from the start, the project party has all the coins, and it is very unfair to cut the leek at any time. Nicholas, the founder of such a great project, is well-deserved to become the first person in the world to create Pi currency. The other one is Pi product leader-Chengdiao Fan (CFAN), and the other is Pi community leader-Vincent McPhillip. Chengdiao Fan (CFAN) CFan received his PhD from Stanford University and has knowledge in human behavior and human group research. Research focuses on human-computer interaction and social computing, specifically how we use technology to positively impact human behavior and society. The hope for Pi is to build an inclusive economic system that allows global citizens to release and capture their own value, thereby creating value for society and the world. Vincent McPhillip comes from the Republic of Trinidad and Tobago in North America, an island country near Venezuela and an important oil country in the Caribbean. Speaks English, Spanish, French. There are two blockchain organizations at Stanford University, and Vincent is in both of them. As a native of an island country in northern South America, it is not easy to imagine that he was able to enter Yale University and Stanford University successively. One of these two people is the product leader and the other is the community leader.
__icent said in an exclusive interview: In the spring of 2018, I met two outstanding Stanford Ph.D.s and a visiting researcher who were responsible for teaching in the blockchain class Taught one of Stanford's first decentralized applications. They convinced me that we could actually “show” rather than just “tell” the power of blockchain technology—that we could directly develop a technology that puts the power of cryptocurrencies into the hands of ordinary people.
_Ant Budu 嫘λ Danhuang Locust Death Pur Ъ Shake ⒘ Sedan suffers Pu 慊 Pu Ъ Liquid Ostris Huanghuang If the customs 呓 suffers 揖 scoop Sangshi?: “How do we bring the power of cryptocurrency to ordinary people? “After the meeting, we began an intense, human-centered design process analyzing the main barriers to cryptocurrency adoption. We finally launched Pi Network on Pi Day 2019 (March 14th).

㈧What are the application scenarios of blockchain

On Oracle’s website, ten types of industry application scenarios of blockchain are listed

Including finance, production, education, communicationMedia, entertainment, government, retail commerce, health, medical, supply chain, insurance, public utilities. Isn’t it very noble? But what I want to say is these application scenarios. In the face of truly high-powered blockchain applications, these application scenarios can only hide in the corner and tremble.

Nowadays, the truly high-powered application scenario of blockchain is Ponzi application, commonly known as "Ponzi scheme". It is a smart contract-type Qianbao, a blockchain game with rolling deposits and withdrawals, an ICO for transaction purposes, and a global pension platform.

Ponzi scheme is one of the oldest application scenarios of our mankind. After the emergence of the Internet, Ponzi scheme has been upgraded to "Internet +", that is, "Internet + Ponzi scheme". The Internet empowers Ponzi schemes, so events like Qianbao's tens of billions occurred. Before the Internet era, there were few Ponzi schemes of this scale. Empowered by the Internet, deposits and withdrawals were made through mobile APPs, and finally rolled In a few years, it has reached a scale of tens of billions.

The Internet has broken down geographical restrictions, physical restrictions, capital flow restrictions, and communication restrictions. As long as you have a mobile phone, you can play the Qianbao APP. Everyone participates, everyone deposits money, and everyone withdraws money. The number of people involved in the case is said to be in the millions. Relatively speaking, it is still an online pyramid scheme (Ponzi scheme 1.0), every day. The brainwashing cannot be stopped during meetings, and violent and illegal means are used, which is simply too weak. With the rise of blockchain technology, Ponzi schemes empowered by "blockchain+" can no longer be described as becoming more powerful than a tiger. It is simply like a chicken becoming a tiger. Like the Internet, "Blockchain+" technology has truly improved application scenarios. Ponzi schemes have further upgraded on the second generation basis of "Internet+". Because of major scenario enhancements and improvement breakthroughs, they have become Ponzi Scheme 3.0. , its characteristics are mainly reflected in the following aspects:

1. Decentralization, no leadership. The smart contract of the blockchain runs automatically, does not require human intervention, and cannot be interrupted by humans. Code rules are hard-coded and cannot be tampered with. In terms of scene improvement, it has solved the biggest pain point of Ponzi schemes for thousands of years, that is, the problem of the leader running away. Because the leader is a program and a code, the blockchain program can exist permanently and no one can delete it. I think that was the biggest breakthrough. This virtual leader is always there. He cannot run away, will not run away, and will not change. The rules will never change, and he will adhere to the Ponzi line for one hundred, one thousand, and ten thousand years. Some people may say that smart contracts can be iterated and can also be manipulated to leave backdoors. That's right, but it can also be done without iteration. Even if it is iterated, it will be transparent and visible, and it will be clear at a glance if there is a backdoor. This is the characteristic of blockchain smart contracts. If you cheat on it, it is equivalent to taking out cheat sheets under the nose of the teacher. No one will participate in such a smart contract once it is online. Therefore, after technical review and verification, there are no backdoors, fair rules, and irrevocable smart contracts, which can be implemented using blockchain technology. Such reliability, once verified, remains unchanged forever. This is the certainty of smart contracts. A program or a character of code canNo change, run it a million times or a trillion times, and the results will be consistent and deterministic.

2. Process transparency. The number of depositors, address account, amount, and time; the number of withdrawals, address account, amount, and time; all are visible. The blockchain has a public ledger function, which can be viewed by everyone around the world, and the ledger data viewed by everyone is exactly the same. Why did Qian Bao lose his position? Because we can't see his backend account, how much money goes in every day, how much money comes out, and the specific details of each transaction. In this way, you can see the evaluation of your redemption ability before depositing money, and the evaluation result is absolutely certain, that is, it will not change after you deposit.

3. Complete anonymity. If you have heard of zero-knowledge proof technology. You can skip this part. To put it simply, many of the things we had in the mathematical knowledge base in the past had no application scenarios after invention. Later, it was discovered that this knowledge is very useful for anonymization. The cryptography technology in the blockchain can effectively achieve identity concealment. As we all know, Zhihu cannot achieve true anonymity in terms of technical structure, but blockchain can.

4. The rules are open and fair to everyone. Deposit one yuan, and withdraw ten yuan as rebate. This rule applies to everyone and will never change. You deposit one dollar, and first withdraw money to the person in front of you, and then the person behind you deposits money, and then withdraws money to you. Fair, right? I have reflected on this many times and think it is still fair.

5. Sustainable iteration. In low-level Ponzi schemes, the leader, product designer, profit distributor, and benefit recipient are often four in one. However, in a blockchain Ponzi scheme, the four roles can be completely separated logically. Achieve sustainable iteration. Through social-based collaboration, these projects can be iterated on forever. There are now 400 senior engineers who are developing around Bitcoin and constantly updating the code. These people don’t need to know anyone. As long as the application is valuable, they can keep iterating. Which centralized project can do this? Even a BAT-level company cannot hire so many professionals scattered around the world. This iterative method of socialization is not affected by changes in a specific person or organization.

Ponzi schemes empowered by "blockchain" use blockchain technology in different scopes, because the technology in this field is still constantly being updated. The applications of smart contracts are these two. The years just add up. The earliest blockchain application is Bitcoin. Some people think that Bitcoin itself has the characteristics of a Ponzi scheme. In 2013, I wrote an answer and pointed out implicitly that this new type of Ponzi scheme will be very lethal because it has the characteristics of a Ponzi scheme. It has the characteristics of no leader, open ledgers, no escape, and open and fair rules. Later, I also discovered that many people around me were more interested in Ponzi schemes than in blockchain technology. Once they hear that Bitcoin is not a Ponzi scheme, they usually walk away silently before I start talking about blockchain technology. On the contrary, if you tell them that it is a Ponzi scheme, they will then ask where to buy it. ? Of course, there is a lot of controversy over whether Bitcoin is a Ponzi scheme.Yes, because the actual application scenarios of Bitcoin are constantly expanding.

In the ICO craze, there are many air coins, which are fake Ponzi schemes and have no application scenarios. People who buy these air coins probably know that they are Ponzi schemes. , but seeing that the packaging was good, I bought it. There are estimated to be hundreds or thousands of such air coins. The scope of the cases involved spans the world, and the amount exceeds tens of billions. These ICOs use smart contracts for subscription and distribution, and then circulate on their own in the secondary market. In this case, withdrawals are not guaranteed, and some people may lose all their money. Many blockchain professionals have always wanted to draw a clear line between these applications, because although these air coins use part of blockchain technology, there is still a centralized organization or individual behind them, with very few network nodes, and users cannot deposit funds. At that time, it was directly collected to an organization or individual (and therefore would be swept away). However, there is no doubt that Aircoin still uses the blockchain for deposits and raising funds, which solves part of the problem of running away and increases the scope and scope of the Ponzi scheme. Communication ability. This is what happens objectively.

Since this year, with the advancement of technology, Ponzi schemes that use smart contracts to achieve more decentralization have begun to surface. Deposits and raises are locked using smart contracts to complete a complete closed loop of deposit, subscription and withdrawal. It can already be a very pure blockchain application. There are some blockchain games that can be openly admitted. After their release, they publicly claimed that they were a Ponzi game. He said: Look, the rules are transparent, the code is visible, and the deposit contract is Locked, no escape, no human intervention, automatic withdrawal. Play early and earn early. This is a crucial breakthrough, publicly admitting that you are a Ponzi scheme, which is something that Ponzi schemes 1.0 and 2.0 could not do before (they did not dare to openly admit that you are a Ponzi scheme). incredible. The gameplay is simple and crude.

This solves a major obstacle in the previous Ponzi scheme promotion process. In the past, it relied on brainwashing to win people's heads, but now it relies on code to speak. You see, "This program won't run away on its own, right? There's no backdoor in it, right? Has the leader disappeared? Even if Satoshi Nakamoto is caught, it won't affect the continued execution of the program, right?" So the first batch of blockchain Ponzi schemes fell into the trap, right? What is important are coders who understand the code, and then these coders stand up and say that after technical verification, it is indeed such an effect, driving other people who do not read the code to join.

In addition to Ponzi scheme application scenarios involving entertainment, gambling, and fraud, blockchain also has opportunities to flex its muscles in Ponzi scheme application scenarios involving the national economy and people's livelihood, and public utilities, and can even be used extremely Dadi enhances people's sense of gain and happiness, and actually improves people's lives. For example, the application of national or global public pension platforms based on blockchain. Because this platform is based on blockchain, it can solve several major shortcomings of pension funds:

1. The problem of fund misappropriation. The ledger is open, and the funds are locked in a decentralized manner. No one can unlock it, except recipients who meet the rules and can withdraw funds. No possibility of appropriation.

2. Inflation problem. The current pension system is based on the generalA series of complex algorithms such as inflation are used to adjust coefficients. After adjustment, recipients are often dissatisfied because the total amount has increased, but the purchasing power has decreased. By taking advantage of the fact that virtual currency cannot be issued additionally, the inflation rate can be restrained and all the money received can be guaranteed to be real money.

3. Unpredictable problems. It is difficult for us to predict the pension withdrawal situation in 30 years, but it can be predicted in advance through smart contracts. Stimulate payment enthusiasm.

4. Policy loopholes and fairness issues. Any pension policy targets diverse groups, and there will be unfair situations. Everyone wants to pay less and get more, pay later and withdraw early. The transparency of the blockchain is down to each account, rather than a set of general policies that plug loopholes in the implementation process. Everyone is the same, pay more and get out more, pay early and get out early. It can even be inherited and never lost.

This greatly reduces the burden and cost of managing pensions by the state. Things that the existing pension system can do can still be done after using blockchain technology, such as state subsidies. Just put money into the contract, and it will be locked. There will be no fakes, such as forced payment, and every record will be true and traceable. All in all, all existing systems and rules can be put on the chain, which improves efficiency and output levels and ensures fairness without affecting the existing effects. Moreover, because the cost of the huge management system is reduced, everyone can receive The absolute number may increase a lot, which will have the effect of actually improving people's lives. Again, it will increase the sense of gain and happiness. In the matter of pensions, the subject of our trust has changed from a single national government to a national government + blockchain, and more than 50% of the process has become a fixed software program. Aren’t we more trusting in this way? If the on-chain pension system is 100% implemented, it can even break the national restrictions and be implemented by a piece of code that is honest, cannot cheat, and cannot be tampered with. Automatic deposits and automatic withdrawals. Trusting it is like trusting a dead person. There will be no mistakes.

The design of the next generation to support this generation is a great invention of our human evolution, which has accelerated the speed of social development. On the surface, it seems that the last generation on earth will suffer more, but in fact it is not. Yes, because the last generation of people on earth may not necessarily know that they are the last generation (maybe they know it in the last few seconds, but so what). What’s more, the earth has disappeared, does the last generation of people still need to withdraw funds for retirement? Obviously, no need.

The biggest disadvantage of a Ponzi scheme is that it runs away midway and the funds are broken. Blockchain has a clear technical solution to solve this problem, and it can also be proven and falsified, so , this technology is scientific. Once the disadvantages are eliminated and the benefits gradually emerge, the Ponzi scheme will achieve greater development in the future.

I also want to ask a question. In human history, are there any things that were originally negative or useless? Later, with the development of technology, the disadvantages were eliminated or avoided, and the functions were discovered. And then become more and more useful and important?

㈨ How ordinary people can make money with blockchain How to make money with blockchain

The emergence of blockchain is a new social trend. It heralds the arrival of a new era of transformation of human society and change of dynasties. The sociological foundation of blockchain is based on the evolutionary laws of nature, society, and technology based on biological logic: distributed, decentralized; from edge to center to edge, from out of control to control and back to out of control. The technical foundation of blockchain is a distributed network architecture. It is precisely because of the maturity of distributed network technology that decentralized, weak-centered, sub-centered and shared, consensus, and shared organizational structures, business structures, and social structures can be effective. Build it up.

First, currency speculation. Coin speculation is the lowest threshold way to make money in the blockchain. The one that everyone is most familiar with is Bitcoin. Bitcoin has increased 40,000 times since its birth. In addition to Bitcoin, there are many digital currencies, such as Ethereum and so on.

Coin speculation is divided into primary market (ICO) and secondary market (exchange). The primary market is like an angel round investment for a certain project, which is usually played by experts; the secondary market is to buy coins on the exchange, just like buying stocks, buy low and go high.

Second, traders. Blockchain is a global market. The price of each currency on each platform and each time period is different. Many people can, like small traders, move from low-price platforms to high-price platforms to sell and make a profit on the price difference. The threshold for this way of making money in the blockchain is low. However, now there are team vendors who use software to operate quickly and accurately.

Third, earn commission from promotion. This method is like a Taobao customer who promotes Taobao product links and gets a commission when the transaction is completed. The blockchain approach 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 will get a commission. The threshold for this way of making money in the blockchain is also relatively low.

Fourth, mining. “Mining” in Bitcoin is the accounting process. This process requires grabbing, and if you grab the opportunity to bookkeeping rights, you will be rewarded, and the reward is Bitcoin. This behavior is "mining". Mining requires equipment, professional mining machines. The threshold for this way of making money in the blockchain is slightly higher.

Fifth, technical support. Provide blockchain technology support to some teams and enterprises. This way of making money in the blockchain has a high threshold and requires a technical foundation.

Sixth, open an exchange (trading website). Open a trading website, let everyone trade, and charge handling fees. The threshold is high.

Seventh, develop wallet. The wallet is the infrastructure of the blockchain, just like the "Alipay" or "WeChat Pay" of the blockchain. Mainly business traffic. The threshold is high.

Eighth, do blockchain projects. For example, issuing coins. For example, Ethereum. The Ethereum Foundation raised $18 million in start-up capital and then kept 10 million Ethereum for itself. The way they play is this, first spend the raised funds, mainly to developers. As developers develop the core technology, Ethereum appreciates in value. Then consume ether coins, spend 9 million ether coins, and the ether coins will circulate. The remaining 1 million Ethereum coins are valued at US$100 million; B. Research blockchain applications. The threshold for this way of making money in the blockchain is very high.

Ninth, basic equipment suppliers. When blockchain becomes popular, whether it is mining or anything else, equipment is needed. For example, the production of mining machines and chips. For example, Bitmain, which produces hardware and software, earns billions of dollars a year. The threshold for this way of making money in the blockchain is too high.

㈩ How blockchain technology can “show its mettle” in the military

In recent years, the application of blockchain technology has attracted widespread attention, whether in the financial field, enterprises, or Government departments are accelerating the research, development and application of blockchain technology. Some countries have also sensed the potential of blockchain technology in warfare and are striving to expand the breadth and depth of blockchain technology in military applications.

Blockchain technology is the "bulletproof vest" for military logistics. The decentralized nature of blockchain technology gives it a strong ability to recover information after an attack. Unless all computers in the system are destroyed, it is completely meaningless to modify the information of a node because the system can recover quickly. Complete form. The current logistics system relies too much on the reliability of the information service center. Once the information service center fails, it will affect the normal operation of the entire logistics system. Military applications have very high requirements on system security and wartime damage resistance. The use of blockchain technology can effectively solve the core issues such as information security, data storage and interactive processing faced by intelligent military logistics. The key point is to improve the logistics system. survivability, thereby ensuring the orderly and efficient operation of the system.

Essentially speaking, blockchain technology is a mutually trusted storage device that can be used for information transactions between multiple users. Its core is "distributed consensus" and "anonymity". Transactions can be verified at any time without affecting the privacy of the parties involved. Therefore, blockchain technology is bound to become a new generation of disruptive technology, and its military applications will become more extensive and in-depth.

Content source ifeng.com