Difficulty and cost calculation of pow mining

1.

You can refer to the following, according to some commonly used graphics cards in the Internet bar market, sort out the price and calculation power of a related graphics card, as well as the expected return to the current period, It can be used as a reference:

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power consumption: 243w
computing power: 22.4m
price of graphics card: 1999 yuan
quantity of eth g every 24 hours: 0.015
revenue generated every 24 hours: 24.48 yuan
expected payback time: 81.66 days

power consumption: 159w
computing power: 24.3m
price of graphics card: 1599 yuan Yuan
number of eth g every 24 hours: 0.017
revenue generated every 24 hours: 27.9 yuan
estimated payback time: 57.31 days

total power consumption: 171w
computing power: 24.4m
price: 1999 yuan
number of eth g every 24 hours: 0.017
revenue generated every 24 hours: 27.87 yuan
estimated payback time: 71.73 days

< H2 > extended data:

Video card (graphics card) full name display interface card, also known as display adapter, is the most basic configuration of computer, one of the most important accessories. As an important part of the computer host, the graphics card is the equipment of digital to analog signal conversion, and it undertakes the task of output display graphics

the graphics card is connected to the main board of the computer, which converts the digital signal of the computer into an analog signal for the display. At the same time, the graphics card still has the ability of image processing, which can help the CPU work and improve the overall running speed. For those engaged in professional graphic design, graphics card is very important. Civil and military graphics chip suppliers mainly include amd (ultra micro semiconctor) and NVIDIA (NVIDIA). Today's TOP500 computer, including graphics card computing core. In scientific computing, graphics card is called display accelerator

2.

POW: full name of proof of work

pos: proof of stake

both of them are the consensus mechanism of blockchain and the bookkeeping method of digital currency

the difference is:

1. POW mechanism: workload proof mechanism, that is, the proof of workload, is the requirement that must be met when generating a new transaction information (that is, a new block) to be added to the blockchain. In the blockchain network based on workload proof mechanism, the ability of nodes to obtain the correct numerical solution to generate blocks by calculating the numerical solution of random hash hash is the specific performance of node computing power

POS mechanism: the proof of rights and interests requires the certifier to provide a certain amount of ownership of cryptocurrency. The operation mode of the proof of rights and interests mechanism is that when creating a new block, the miners need to create a "currency right" transaction, and the transaction will send some coins to the miners themselves according to the preset proportion. According to the proportion and time of token owned by each node, the equity proof mechanism reces the mining difficulty of nodes proportionally according to the algorithm, so as to speed up the speed of searching for random numbers

extended materials:

the concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's ideas, the open source software and the P2P network on it were designed and released. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system

unlike most currencies, bitcoin does not rely on specific currency institutions. It is generated by a large number of calculations based on specific algorithms. Bitcoin economy uses the distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses the design of cryptography to ensure the security of all aspects of currency circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction

3. There are related POW double digging, but the so-called POW intelligent double digging is a false proposition. For example, some mining machines or mines proce platform currency, and then pay for the currency of digging, which is double digging. It doesn't depend on the amount of digging, but on the overall rate of return

4. According to ZBG's announcement, the platform will purchase the equivalent ZT from the market with all the transaction fees, which are divided into four parts: 30%, 50%, 10% and 10%, and distributed to users according to the specified proportion. Transaction fee return mechanism: POW + POS + reward mechanism. ZBG community adopts the mode of "POS + POW mixed transaction mining" to give back to community investors with ZT, and at the same time rewards the traders and ZT holders of the website.

5. Bitcoin is a consensus network, contributing to a new payment system and a fully digital currency. It is the first decentralized peer-to-peer payment network, which is controlled by its users without a central management organization or middleman. From the user's point of view, bitcoin is much like Internet cash. Bitcoin can also be regarded as the most outstanding three style bookkeeping system. It can be circulated all over the world with a fixed total amount and no issuing body< At present, there is no legal electronic currency in China. QQ currency is a kind of game currency with fixed value, which is released by Tencent. Alipay's three party payment system is a means of payment. They all have the subject of operation. Legal tender is issued by the central bank and endorsed by the state as credit

Shanzhai coin is to learn from bitcoin and innovate and expand on the basis of bitcoin. The user community cannot be compared with bitcoin. The consensus of many people in the community is that some well-designed counterfeit coins will become a supplement to bitcoin, and bitcoin will become a supplement to fiat money, with one more choice.

6. First of all, you can register a company in Hong Kong of any nationality. Secondly, most of them are not registered in Hong Kong. For example, the famous Biyuan chain, quantum chain, Ethereum and fire coin network are not registered in Hong Kong, most of them are in Singapore. It's also registered in Switzerland
it's very easy to register a Hong Kong company. You only need to provide your ID card and company name. The registration time is 10 to 15 working days. It's very fast.

7. Science and technology change life, but also to promote the driving force of economic development. In recent years, the wave of mobile Internet and big data technology is higher than one wave, rapidly leading the development trend of the new era. In 2017, when new things and new technologies continue to emerge, the emergence of blockchain undoubtedly set off a new revolution in digital economy. Chongqing jinwowo network technology group, in line with the current national policy of the development of big data instry, deeply explores the research and development of blockchain technology, explores the application of blockchain technology, and is committed to developing into a well-known brand in the field of blockchain in China, leading the new ideas of blockchain development.

8. Let me help you analyze Citex's main mineral currency. Citex's bull currency is like a tide, which is the victory of the pow mechanism. On the one hand, the issuance mechanism of mineral coins is more fair, and each coin needs to consume a certain mining cost. Mineral coin is different from ICO token. The cost of issuing ICO token is low, and the marginal cost is close to zero. If there is no cost, it is difficult to form price support. ICO token is often reced to a tool for project side and capital side to harvest retail investors. On the one hand, most of the coins are decentralized

9. 1. POW is the proof of workload, which is familiar with mining. Through mathematical operation, we can calculate a random number that meets the rules, that is, we can obtain the bookkeeping right, send out the data that need to be recorded in this round, and store it together with other nodes in the whole network after verification. In a word, nineteen is one hundred and sixty; The more you do, the more you get, that is socialism, distribution according to work, more work, more gain
2. POS is the proof of rights and interests of POS, which is an upgrade consensus mechanism of pow; According to the token proportion and time of each node; It can rece the difficulty of mining in equal proportion, so as to speed up the speed of finding random numbers. In a word: the more you hold, the more you get. POS is capitalism, distributing according to money, money makes money
3. I read the news a few days ago that God V wanted to solve this problem. Pgpow algorithm is proposed by biut public chain. Polling group proof of work integrates the advantages of POS and POW consensus algorithm to realize decentralized POW mining.