Getting Started with Blockchain | 42 Most Frequently Asked Questions and Answers About Blockchain

In the simplest terms, a blockchain is a series of immutable data records with time stamps, managed by a cluster of computers that do not belong to any single entity. Each of these data blocks (ie blocks) is protected using a cryptographic principle (ie chain) and bound to each other.

1. What is a blockchain?

Sorry, but I don't think this is the question you really want to ask. If you lived a century ago and asked "what is a car", you probably don't actually want to know how the internal combustion engine, differential shaft, and carburetor work. You just want to know that this is a more efficient way to get in and out of the store than riding a horse. So the question is actually, "What's the use of blockchain?"

We are working to resolve this issue. I personally believe that the purpose of blockchain is to allow individuals to "own" digital objects in the same way that they own physical objects. This is more important than it sounds at first.

2. What is blockchain software?

Software to implement and run blockchain. A bit like a database. Do you care how they work fundamentally? No? Then the next question

3. What is a blockchain database?

This is a blockchain. In the database. In fact, a copy of the blockchain on your computer is a database. The same is true for spreadsheets, but you won't ask "what is a spreadsheet database" because you don't really (and shouldn't) care. For spreadsheets, you just want them to accumulate numbers for you in a structured, visual way. When it comes to blockchain, you just want it to manage digital "ownership" without having to rely on or trust the other party because they charge you management fees.

4. How does blockchain work?

There are many articles on the Internet that answer this question, but you may not actually be interested. The way transistors work is also very interesting, without them, the blockchain would not work.

5. What is a blockchain application?

Program running on a blockchain system. If you're lucky, it actually needs to do something that is mutually agreed upon (or not known at all), so it needs some artificial way to ensure that they trust each other the results of running the program. Generally, we ensure this trust by paying reliability to brokers, escrow agents, notaries or others. The purpose of using a blockchain is to replace it mechanically.

6. What are the benefits of blockchain technology?

In addition to providing life to blockchain experts, what else do you mean? I want to save unnecessary expenses, not have to spend hundreds of euros to see someone, and not have to sign a contract for a new business connection (just like I needed my notarized gift when buying a house on someone last Tuesday).

7. What is the blockchain revolution?

People believe that, just as the Internet has brought us a revolution in information transfer (no longer having to order a book in a library and wait three weeks to reach the load between libraries) and a new advertising and commerce platform, Blockchain will change the way we store and transfer "value" and process payments. And, although you may think that knowledge is power, unfortunately, the control of money is more powerful than the control of knowledge. Some people hope that the blockchain can release funds in a way that the Internet should release information for free.

On the other hand, maybe it will only make it cheaper for people to buy cat videos from the Internet.

8. What is a block in a blockchain?

On the blockchain, transactions are packaged into blocks, which are fixedly locked in a standardized data chain, presenting a true single view, oh gosh, do you really care? Are you wondering what a toric joint is in a car engine piston? I do not think so. You just want your car to take you to work or shop. Again, you only want the blockchain to work. If you actually care about what a "block" is in the blockchain, you will do a Google search for it instead of asking me.

9. What is block time?

Oh look, a video of a shopping cart turns into a bike! Of course, you would rather find out the relevant information.

10. What is distributed ledger technology?

It is like a blockchain, but does not use blockchain. Like Wankel engines, not piston and cylinder engines. Do you care about Wankel engines? I do not think so.

11. What is a blockchain wallet?

A program on your computer that takes care of your private encryption key so that others cannot spend or steal your cryptocurrency. It's like your physical wallet-if you don't look after it, your teenage son (or hacker) will steal your cash and use it for bubble gum and computer games.

12. What is blockchain programming?

Write a program that uses or interfaces with the block. The clue is in the phrase "blockchain programming".

13. What is a blockchain company?

A company focused on blockchain. Again, the clue is in the phrase "blockchain company". Seriously, are these the real problems? The next one is "What is a bus driver"?

14. What is a private blockchain?

This is a blockchain that is not open to the public. The earliest blockchains, such as Bitcoin and Ethereum, were open to anyone to submit transactions and data to them. It's a bit like your local public pool or library-anyone can use it. Private blockchain is a membership club only.

15. What is zk-SNARK?

If you have to ask, you don't want to know.

16. What is Ethereum?

Public blockchains like Bitcoin, but you can use it for more complex programming. As a result, you are more likely to lose money unexpectedly due to software errors in your programming content.

17. How does Ethereum work?

The parents of the inventor, Vitalik Buterin, were brought from Russia to Canada by immigration through the power of magic elves.

Seriously, how deep do you want to go? We can start with a three-day computer program compiler lecture, then a day on Chomsky's formal grammatical hierarchy, and then … I see.

18. What is an Ethereum block?

It's like a Bitcoin block, but spelled differently because it's related to Ethereum, not Bitcoin.

19. What is an Ethereum smart contract?

A computer program running on the Ethereum blockchain system, which performs more complex blockchain work that Bitcoin cannot complete.

20. What does Ethereum support?

Any support? Ultimately a society or community. There are many people who invest a lot of energy and / or money to make Ethereum work. Thank you all.

21. What is Ethereum (ETH)?

This is Ethereum's Bitcoin. The US uses the US dollar, Europe uses the Euro, and Ethereum uses Ethereum.

22. What is an ETH address?

This is your bank account on the Ethereum blockchain. Unless the password is not 4 digits, it will be longer.

23. How do I earn ether (ETH)?

Learn the skills others want to pay you. Take out the money you earn from working for them and use it to buy ether.

24. How long does it take to transfer Ether?

Usually about 20 seconds or so, but this depends on how much you pay for the transaction. So it's like a postal service-it will be faster if you are willing to spend more for a personal courier, but if you want to save money, you just need to use a normal mail system-it may take longer, but It can still last if you pay stamps.

25. What is the gas limit for Ethereum?

How much are you willing to pay for running smart contracts on the Ethereum blockchain. Just like your car, the size of the fuel tank and the cost of refueling make it impossible for you to drive from San Francisco to New York and buy a spiced beef sandwich from your favorite Greenwich village deli.

26. What is Ethereum coding?

Do you actually know any programming language? If so, Ethereum nodes are coded in multiple languages, but the most reliable are Go and C ++. There are also Ruby, Java and Rust.

Oh, you mean Ethereum smart contract? They use a specially developed language called Solidity, which looks a lot like Javascript, but also supports several other languages. However, smart contract programming is so professional that if you are concerned about which programming language to use, you probably should not write any language.

27. What is the use of Ethereum?

Programmable currency transactions.

28. What is the Enterprise Ethereum Alliance?

do not know. Maybe I should investigate because they sound like they can give someone who promotes Ethereum some money and I can do it with some money. By the way, did I mention that Ethereum is really cool?

29. What is the difference between Bitcoin and Ethereum?

Bitcoin is more valuable than Ethereum. Similarly, Bitcoin scripts cannot function as Ethereum smart contracts. But on the bright side, you are less likely to write a Bitcoin script that accidentally locks in a $ 100 million cryptocurrency.

In addition, they are spelled differently.

30. Is Bitcoin or Ethereum better?

Is a seven-seater Chevrolet Trans Sport or a Chrysler Neon better? It depends on how many people you are driving and how much gasoline you are willing to burn in the process. Define "better" and I can give you a "better" answer.

31. What is Byzantine Ethereum?

Seriously is this one of the "most common questions about blockchain"? Where do they poll these questions-Ethereum Business Development Conference in Nevada?

Ethereum developers (people who develop and improve these things) usually like to upgrade using names related to the Bosphorus area. Therefore, the new version is called "Byzantine" or Constantinople. There is no doubt that Istanbul will be used at some point.

Oh wait, this is the name of the next version. Okay, that's awkward. Then, how will they choose a name for the publication?

32. What is Proof-of-Stake (PoS) Ethereum?

The proposed Ethereum upgrade replaces a large number of computers to perform a lot of calculations to try luck and generate the next Ethereum data block (and get some rewards from it). By giving rewards, all work can be saved People, based on their honesty, because if they don't, they will lose a lot of ether.

33. What's next for Ethereum?

Wait, beacon chain, wait, serenity, wait, wait, proof of stake, soon. Everything is fine-don't worry.

34. What is Ethereum mining?

After the next Ethereum launch, some things are irrelevant, so why bother to understand it?

35. How long does it take to mine Ethereum?

I ask this gentleman to answer my answer to question 34.

36. What is the hash rate of Ethereum?

See 35. Oh, that's fine. The more powerful or efficient your Ethereum miner, the higher its hash rate.

37. Can I mine Ethereum?

no. The human brain is extremely inefficient at mining Ethereum. Technically, you can do the calculations needed for mining, but the speed is really low and the error rate is very high, so it's not worth it. There are better ways to use your brain.

38. Can my computer mine Ethereum?

Ok, this is a better idea. But your computer is not optimized for Ethereum mining, so it is still unlikely to generate any revenue for you. Just keep using it for email and web browsing.

39. How difficult is Ethereum?

Did we forget the definite article? The question should be, "How difficult is Ethereum?"

The answer is-the more people use computers and specialized mining hardware to mine Ethereum, the more difficult it will be to succeed. The difficulty of successful mining is determined by the difficulty of Ethereum, which is calculated based on the historical records of past mining work.

Cryptocurrency mining is like digging in a mine. To ensure that the amount of gold is constant, if too many gold mines are found, the regulator will either place heavy objects on your arm or if too few gold mines are found It was removed and found.

40. Can you mine Ethereum on your laptop?

Yes, but this is like digging with a teaspoon. You can buy dedicated mining hardware, just like buying a pickaxe.

41. Can you mine Ethereum on a Mac?

Wait, I thought there were only 40 questions. I don't know-I don't have a Mac. But … see the previous question.

42. How much Ethereum can I mine in a day?

The upper limit is approximately 13,000 ethers per day. But … oh come on, I almost found myself talking about the proportion of mining capacity and the cost of mining equipment, let's face it, you have a 3-year-old laptop, and a little bit about computer Friends, so let's say: about 0.00003 ether.

This way, you don't waste your computing power or friends' time. However, if you finish reading this article, you probably don't care about wasting time.

Original link: http://www.bcasia.cn/a/zhuantizhuanlan/2019/1204/249.html