Author: Senior Writer, industry experts, the official micro-: w13398183 (butt Wei cipher)
1. What is a blockchain?
Blockchain is a decentralized distributed database (ledger). It is a science and technology that promotes social progress. Science and technology are the primary productive forces, and blockchain has value.
2. What is a public chain?
The public chain refers to a blockchain where anyone in the world can enter the system at any time to read data, send data that can confirm transactions, and can compete for billing (order request). Centralized databases, such as Jack Ma’s database, are all data providers, but we charge our fees for using data.
The public chain is usually considered "completely decentralized" because no individual or organization can control or tamper with the reading and writing of data.
The public chain generally encourages participants to compete for bookkeeping through a currency issuance mechanism to ensure data security. Bitcoin and Ethereum are both typical public chains.
3. What are the four major elements of the public chain? What is the role?
4 major elements: source code, node, secret key wallet, blockchain browser
effect
1). The source code is the source program, which can develop the Api ports of wallets and nodes, and develop the browser ports of graphics cards and multi-scale chips.
2) The key wallet is used to store assets, that is, the deposit address.
3). The node is the mining pool. There are mining machines in the mining pool, which are equivalent to the Internet server. The essence of mining is the process of accounting. Every time an account is recorded, a data packet is stamped and a timestamp is applied to form a zone. Blocks, blocks connected in series are called blockchains. Decentralization is achieved through consensus mechanism and cannot be tampered with.
4) The blockchain browser is to view the distribution and circulation of global assets, that is, to view the changes in the number of encrypted digital currencies in each key wallet, open and transparent, and can be queried and traceable.
If it does not meet the first point, it is not a public chain, but to distinguish the authenticity, you need to check on a credible website
4. What are the six characteristics of the public chain?
1), decentralization
2), distributed ledger
3), consensus mechanism
4), open and transparent, can be queried and traceable
5), cannot be tampered with
6), anonymous and safe
5. What kinds of fake blockchains cannot be touched?
1), mobile phone mining
2), wallet mining
3), cloud mining
4), smart mining
5), with its own mining machine
6) Bundled with enterprises, pay mobile phone bills, water and electricity bills.
7) Real currency and counterfeit trading ~ Use well-known currency to place an order.
8), exchange concept
9), there is a fund pool
6. Is mining coin mining? What is the essence of mining?
Mining is not mining coins. The essence of mining is to grab the right to keep accounts. It is a process of recording transfers between wallets in the blockchain network.
7. What is decentralization?
"Decentralization" is a phenomenon or structure that can only appear in a system with many users or many nodes, and each user can connect to and influence other nodes. In layman's terms, everyone is the center, and everyone can connect and influence other nodes. This flat, open source, and equalized phenomenon or structure is called "decentralization."
If all nodes are in the hands of one person or authority, then it is not completely decentralized
8. What are the well-known public chains? (Cite more than 7)
Bitcoin BTC
Ethereum ETH
Ripple XRP
Litecoin LTC
Dogecoin DOGE
NEO
Qtum
Yuzu EOS
Taixi TSH
9. What is the 6-point consensus mechanism?
The blockchain system needs to design a mechanism to agree on the sequence of transactions that occur within a similar period of time. This algorithm for reaching a consensus on the sequence of transactions within a time window is called a "consensus mechanism." In Bitcoin, 6 nodes simultaneously grab the right to keep an account. A consensus is reached at 6 points, and the same data is recorded. This consensus mechanism is called a 6-point consensus mechanism.
10. How does the blockchain achieve decentralization?
In the blockchain industry, decentralization is very important, it can guarantee the security of our assets ❗
Decentralization is not the result of shouting, nor is it the consensus of many people (Yunlianhui, Datang has a lot of people in the world, but the node server is in the hands of the boss, and the plus wallet project is essentially a centralized fund disk). How is it decentralized?❓
Blockchain decentralized transfer is done by collocation of nodes and wallets through a 6-point consensus mechanism. The 6 nodes record the same data (account books), reach a consensus, and then announce it to the entire network. All nodes are at 6 points. The consensus ledger shall prevail, record the same data, and complete decentralization.
11. What is the role of the blockchain browser?
The block chain browser is the main window for browsing the block chain information, and the content recorded in each block can be checked from the block chain browser. Generally, users of digital assets use blockchain browsers to query transaction information recorded in blocks.
In a word, the blockchain browser is to check the global asset distribution and circulation of a certain blockchain. The sum of all wallets = the sum of coins dug out, one is not many but one is not many.
12. How to identify true and false blockchains
Everyone knows that in traditional industries, depending on whether the business has the qualifications, it must be checked by the Industrial and Commercial Bureau; Internet projects must be checked on the Internet, such as Tianyan Check and Enterprise Check; then, today, the blockchain era has arrived, to identify true and false blocks The chain should go to a credible website-Jihapu github.com website, enter the source code to check, if the source code is not found, it is fake ❗
13. What is GitHub.com?
Jihapu website is a credible website that the world's 50 million IT experts, including the world's top blockchain experts, have reached a consensus. As long as your coin has the underlying technology of the blockchain, you can make it public on this website, that is, you can check it, that is to say, you can check the source code with the source code. If it is not found, there will be no technical content.
14. The process of understanding encrypted digital currency:
Enterprise points (air coins, altcoins)
Tokens (mostly tokens of Ethereum)
Private chain, side chain, cross chain, alliance chain (token)
Public chain (coin)
The points are the points in the APP made by the enterprise using Internet technology and have nothing to do with the blockchain.
And there are elements of blockchain, without its own underlying technology, it cannot be completely decentralized.
The public chain coin has four major elements, which can be completely decentralized, encrypted accounting, through a consensus mechanism, to achieve openness and transparency, can be queried and traced, cannot be tampered with, and is anonymous and safe.
15. What is blockchain technology❓
Blockchain is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. The so-called consensus mechanism is a mathematical algorithm in the blockchain system to establish trust and obtain rights and interests between different nodes [1].
Blockchain is an important concept of Bitcoin. The "2014-2016 Global Bitcoin Development Research Report" released by Huobi.com, the Internet Finance Laboratory of Wudaokou School of Finance of Tsinghua University and Sina Technology mentioned that the blockchain is Bitcoin. The underlying technology and infrastructure of the currency [2]. It is essentially a decentralized database and also serves as the underlying technology of Bitcoin. Blockchain is a series of data blocks associated with cryptographic methods. Each data block contains information about a Bitcoin network transaction, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block.
16. Blockchain mainly has the following six characteristics
a, decentralization
Due to the use of distributed accounting and storage, there is no centralized hardware or management organization, the rights and obligations of any node are equal, and the data blocks in the system are jointly maintained by nodes with maintenance functions in the entire system. Stopping any node will not affect the overall operation of the system.
b, to trust
All nodes in the system can conduct transactions without trust, because the operation of the database and the entire system is open and transparent. Within the rules and time frame of the system, nodes cannot deceive each other.
c, openness
The system is open, except that the private information of all parties to the transaction is encrypted, the data of the blockchain is open to everyone, and anyone can query blockchain data and develop related applications through the public interface, so the entire system information is highly transparent .
d, autonomy
The blockchain adopts consensus-based specifications and protocols, so that all nodes in the entire system can exchange data freely and securely in a trustless environment, so that the trust in "people" is changed to the trust in machines, and any human intervention Does not work.
e, the information cannot be tampered with
Once the information is verified and added to the blockchain, it will be permanently stored. Unless more than 51% of the nodes in the system can be controlled at the same time, the modification of the database on a single node is invalid, so the data of the blockchain is stable High performance and reliability.
f, anonymity
Since the exchanges between nodes follow a fixed algorithm, the data interaction is trustless (the procedural rules in the blockchain will determine whether the activity is valid), so the counterparty does not need to make the counterparty trust itself by disclosing its identity. Very helpful for credit accumulation.
17. Do you want to understand all this?
What exactly is a blockchain? The real blockchain is a distributed accounting technology. At the same time, there are multiple decoding technologies and decryption technologies. If you don't know these technologies and only talk about income, they will fall into the vest blockchain, which is the essence of the fund, and suffer heavy losses.
Author: Senior Writer, industry experts, the official micro-: w13398183 (butt Wei signal). Support sharing by retaining the author's source, please retain the author's copyright information for reprinting, and offenders must be investigated.