Miner modifies blockchain

1. What is mining
for example, bitcoin was invented by Zhongben Cong in 2009, and the total number of bitcoin was only 21 million. By participating in the proction of blocks and providing proof of work (POW), we can get the reward of bitcoin network. Mining is the process of packaging and confirming the transactions in the bitcoin system over a period of time, and then recording them on the block

if you need to know more about it, you can look at my account number; Let's discuss

what is moving bricks
when it comes to "moving bricks", you will think of migrant workers or various online jokes, but today we only discuss "moving bricks" in the blockchain market
to describe "moving bricks" in vernacular is to make profits by using the price difference between different exchanges. The same currency has different prices in different markets. Buy it in a cheaper place and sell it in a more expensive place. The middle price difference is your profit
for example, the price of bitcoin BTC is $4000 on exchange a and $4100 on exchange B. after a buys BTC, it can be sold to B and each one can earn $100. This process is called "moving bricks"

2. It refers to the person or machine that tries to create a block and add it to the blockchain (the word also refers to the software that does it). When a new valid block is created, the bitcoin protocol automatically distributes 50 (now 25) new bitcoins to the corresponding miners as a reward for their work. This is also the basis of bitcoin's existence.

3. Qiao Xi
Wei Liang
Xiao tianruo
Le Xiaomi
Yang QIANZI
Ju Wenling
man Shufei Er
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5. [answer]: the existing problems in class management are as follows:
(1) e to the pressure of scores and the restriction of teachers' authority, the head teacher's way of class management tends to be arbitrary. For a long time, the head teacher has been engaged in the stylized ecation and teaching work with high intensity. They are most concerned about two things: one is how to make students achieve good results in the examination, to ensure that the class's performance in the school ranking ahead or not behind. Second, let the students listen to the teacher, in order to maintain the authority of the teacher is not damaged. Teachers must implement class control to ensure that class teaching and learning are not interfered. Teachers' authority is undoubtedly the most convenient and effective means to make students obey teachers' command and control students' interference behavior. In this context, class management is virtually restricted by the score and the authority of teachers. Therefore, class management has become the process of teachers' indivial arbitrary management
(2) the class management system is lack of vitality, and the degree of students' participation in class management is low. The purpose of setting up class cadres in the class is to cultivate students' democratic consciousness and style, and learn to take care of themselves. However, in today's primary and secondary schools, there are some problems: the class is relatively fixed in the Ministry, which makes some students develop a "cadre style". Students only regard the class cadre logo as a symbol of honor. In the concept of "class cadre", honor is more important than responsibility; They only regard class cadres as "teachers' assistants" and neglect that the Ministry is "representatives of the masses". Students all want to be cadres and good cadres, but they lack the consciousness of "everyone is a little master of the class" and "striving to be a qualified little master of the class". This shows that in class management, the specialization of class cadres and the lack of autonomy of most students are common problems
to solve these problems, the solution is to establish a student-centered class management mechanism. The establishment of student-centered class management mechanism has the following characteristics:
(1) to meet the development needs of students. The traditional class management is that teachers control the factors of people, things and things in the class. It reflects the teachers' expectation of the class and the students' obedience to the teachers. Discipline, order, control and obedience are the goals of the traditional class management. In the school ecation of modern society, class activity is a kind of practical activity of cultivating people. In this practical activity, students are both the object and the purpose. Therefore, to meet the needs of students' development is not only the starting point of class activities, but also the final destination of class activities. The essence of class management is to develop students' potential as much as possible
(2) establish the dominant position of students in the class. In the traditional class management mode, the dominant position of students can not be guaranteed. The internal mechanism of modern ecation is to explore the subjectivity of students from the source of subjectivity and promote the active and harmonious development of human beings. Therefore, modern class management emphasizes taking students as the core, establishing a set of management mechanism that can stimulate students' initiative and enthusiasm, and ensure the sustainable development of students
(3) training students' ability of self-management class. The traditional model of class management is teacher centered, and students have limited opportunities to participate in class management. The key points of the reform of class management system, which focuses on training students' self-management ability, are as follows: appropriately increasing the posts of "small cadres" and properly rotating them; To elect cadres in accordance with democratic proceres; Make small cadres from "teacher's assistant" to "student's representative"; Students' attention should be directed from being cadres to being "qualified class masters"; The teacher centered class ecation activities should be transformed into students' self-ecation, that is, the class collective should be the main body of students' self-ecation.

6. If it is the proof of workload, it can be modified, but it needs to invest a lot of money. For example, if you want to change the block data of bitcoin (such as transferring all bitcoin to your wallet, etc.), it needs to account for 51% of the total network computing power. But with so many miners digging, it is basically impossible to account for 51% of the total network computing power.

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8.

About dragonex dragon token

1, basic introction

Dragon token (DT) is a token issued by dragonex based on Ethereum erc20 standard, and each dragon token stored on the platform has the right of project dividend

every day, the transaction commission income of dragonex project will be distributed to all dragon coin holders according to the holding proportion of dragon coin

2. Mining method

longcoin can not be obtained through ICO or pre excavation

all dragon coins can only be generated in the form of "mining", and the only way of mining is to trade on the platform“ Miners (i.e. platform users) contribute to the platform through trading behavior, and the platform issues dragon coins to miners as rewards

the total number of dragon coins issued was 37339500, and promised never to be issued

3. Release rules of dragon coin

Dragon coin is a token based on Ethereum smart contract. Since the launch of Genesis, the smart contract will be released for a total of 3650 times, with an interval of 24 hours and a cycle of 365 times

in the first cycle, 51200 dragon coins will be released each time; The yield of each cycle will be 50% lower than that of the previous cycle

4. Longcoin distribution mechanism

the platform will make statistics on the mining situation of "miners" every day, and the statistical cycle is 0:00:00-23:59:59 on that day; Each time the smart contract releases the Dragon coin, the platform will allocate the new dragon coin to the corresponding "miner" account on the next day according to the statistical data

"miners" dig out dragon coins through trading behavior, but the excavated dragon coins are not 100% owned by miners, among which:

① "miners" get 30% dragon coin reward and

② market brokers get 20% dragon coin reward Market broker: if miner a uses the invitation link of user B when registering, then B is the market broker of user a)

③ dragonex project party gets 10% block dragon coin Award (frozen for one year: for project marketing)

(4) dragonex project party gets 40% block longcoin Award (permanently frozen: used for platform technology research and development, talent introction, project operation, buy back longcoin and destroy)

note: Singapore standard time (UTC / GMT + 08:00)

5. Longcoin dividend mechanism:

① 100% of the daily platform revenue will be distributed to longcoin holders according to the proportion of longcoin holdings

② the platform will take a snapshot of the balance of dragon coin holders at 23:59:59 every day. Since the Dragon coin g up on the same day will arrive the next day, the user can share the Dragon coin on the same day = snapshot data + dragon coin g up on the same day. Dividends will be paid the next day, in the form of usdt to each holder's account

③ dividend formula:

project party's income to be paid dividends = transaction fees + other income of the project

dividend income of currency holding users =

income to be paid dividends * [number of indivial dragon coins held / (number of issued dragon coins - number of destroyed dragon coins)]

6. Online time of dragon coins

Dragon coins began to "mine" and calculate dividends from November 2, 2017

e to the fact that Longyuan is still in the development stage, it can not be released to miners and market brokers. However, the project side will record the data of everyone, and after the development of longcoin is completed, the longcoin and dividends e to everyone will be distributed to the account

longcoin is expected to be developed before November 25, 2017, and will be traded online on dragonex platform. The specific online transaction time will be subject to the official announcement later