The founder of cactus POC

1. Appdownload cactus POC online 6 exchanges share trading depth I communication · personal column 2019 / 05 / 09 14:33 4175 attention as of May 2019, cactus POC online 6 exchanges in total, open POC / eth trading pairs at the same time, at the same time log in non small ranking list, the exchanges will share POC trading depth, matching, online that has the whole platform market, K line and other data. As the ecological token of digital asset trading platform, pngpoc has great value support, including investor protection fund, project online voting, transaction fee payment, incentive mechanism, platform service purchase and business ecological alliance. The six exchanges of POC online are: chainease ce.cool, zt.com, fubt, Lein exchange, bione and Yuanjun exchange. In the future, more exchanges will be online to share trading depth. At present, the daily trading volume of each exchange has reached 380 million pieces / day. 190509140844702765652. PNG trading depth "is also known as" market depth ", which refers to the number of orders whose price can be driven to a certain extent by a token. It represents whether the platform can guarantee the price stability when bearing large transactions, and reflects the liquidity and maturity of the market. POC has settled in six exchange platforms, and shares depth and liquidity, which will achieve a win-win situation. POC / eth trading depth and liquidity are shared among the seven exchanges. For the exchanges, POC is the value link. By sharing trading depth and liquidity, users can be more efficient, a large number of users can be quickly accumulated, and more revenue and value can be created; For POC, by sharing transaction depth and liquidity, POC can get more traffic and circulation scenarios; For users, it can rece the transaction risk caused by the sharp rise and fall of the price. At the same time, the market price is relatively more stable and the transaction cost is lower when the large amount of transaction, so they can enjoy the smooth and timely transaction experience of any amount. 190509140844216899.jpeg in the future, with the value support of many application scenarios, the operation of professional teams, the guarantee of mature technology, and the absolute advantage of many professional exchanges sharing trading depth and liquidity, POC is bound to have more value and competitiveness in the project of blooming flowers. 190509140845191542036.png statement: This article is written by the author of golden finance. The opinions only represent the author himself, and never represent that golden finance agrees with his opinions or confirms his description. The author of this article: I spread to share + collect + pay attention to more information more activities more Disclaimer: as an open information sharing platform, golden finance only represents the author's personal views, has nothing to do with the position of golden finance platform, and does not constitute any investment finance suggestions. Risk tips for downloading appdownloadapp on PC desktop site to prevent the risk of illegal fund-raising in the name of "virtual currency" and "blockchain"

2.

POC is the abbreviation of proof of concept, which means to provide evidence for opinions. It is a set of suggested electronic models, which can be used to demonstrate the design of teams and customers, and allow to evaluate and confirm the conceptual design scheme. The evaluation of POC may cause the adjustment of specifications and design

function:

the commitment of design and the opinions recognized by all will be recorded in the design adjustment document for future reference. In this way, POC continues to develop. If you need help completing these tasks, you can find assistance resources at Queensland University

extended data:

evaluation and verification of POC

the process of evaluation and verification is to seek feedback from risk takers through POC and filing design documents. Through POC evaluation, risk takers may put forward requirements for adjusting specifications and design

sometimes, e to design defects or inappropriate places, the design team may have to go back to the drawing board. Customers may decide to stop designing or look for other teams because the design does not pay enough attention to the needs of customers and users, or because of the instability of customer needs

sometimes the change is caused by the customer organization or project decision-maker. Generally, at the end of the evaluation and verification process, the design commitment and the opinions accepted by all will be recorded in the design documents

this is often an important milestone in the life cycle of proct development. After the evaluation and verification, POC can continue to develop

3. POC: (proof of credit) credit consensus mechanism is initiated and applied by the nuls team. The consensus mechanism is: when the node's credit reaches the standard, a certain margin can be locked to join the consensus. After the consensus node is reordered, the block will be released in turn in each round, and the margin will be unlocked when it exits the consensus. The POC of nuls is divided into entrustment consensus and node consensus. Entrustment consensus mortgage 2000nuls and node consensus mortgage 20000nuls. The node builder maintains the node and receives part of the commission from the delegation consensus to jointly maintain the healthy operation of the nuls main network node
POC consensus mechanism integrates the advantages of pow / POS / dpos, and achieves better coordination of decentralization, efficiency and consistency in different directions, which are difficult to unify in blockchain< br /> 
1. Decentralization: in the POC consensus mechanism, there is no rigid limit on the number of nodes. The number of nodes is dynamic, and anyone who meets the conditions can join the nodes. Here, each outgoing node is similar to the mine pool in the pow, and can join the consensus in the mine pool by holding interests. In the pow, the pool obtains the bookkeeping rights according to the computing power. In the POC, the chance of all the pools to obtain bookkeeping rights is random and equal, which makes the node distribution of the consensus mechanism of POC more decentralized< br /> < br /> 
2. Efficiency: the two key factors affecting the efficiency of blockchain network are the degree of wide distribution of nodes and the hardware network resources provided by nodes. In the coordination of these two parameters, POC consensus mechanism introces the credit coefficient mechanism, which directly affects the stability of the node. Therefore, each node and the principals participating in the node will make the most favorable choice for the network to ensure that the node can provide services efficiently and stably. In addition, they will join the node consensus by means of rights and interests, The number of nodes will float in a certain range, which can be adjusted by changing the incentive parameters. When the parameters are fixed, the market will adjust automatically. In these nodes, the dpos principle of random sorting out blocks is integrated, which ensures the security and efficiency of the network and provides higher TPS carrying capacity< br /> 
3. Consistency: in the POC consensus mechanism, all members can participate in the consensus, and the node can only charge a certain fee to the participants. All people have equal opportunities to participate in the consensus, and the incentive is determined by the equity and node credit coefficient. Nodes and all participants will reach a consensus in order to provide stable node services.

4. Let me tell you this: POW has almost all the advantages and POCS have none of the disadvantages. bitcoin's pow consensus mechanism has obvious shortcomings: energy waste, noise, mining centralization. The cost of bitcoin mining is getting higher and higher, and the computing power is concentrated in several large mines, so it is difficult for ordinary users to participate; HDFS adopts POC mechanism for hard disk mining, so that everyone can mine.

5. Bitcoin is one of the most representative virtual currencies. A group of virtual currencies headed by bitcoin will exist for a long time. It will not replace the current legal currency. It will exist independently of the legal currency. It does not belong to any country. Some virtual currencies are reached by some people first, and then graally form a wider circulation because of its value, If more people reach this consensus, they will have the value of existence in the end. Of course, most of the virtual currency has no value, it is a kind of air currency. If a currency wants to exist for a long time, it must go through a long period of ups and downs, and constantly dig out its greater use value. Only in this way can it be a virtual currency with real value< There are two ways to invest in virtual currency:

first, mining is the only way to obtain some virtual currency such as bitcoin. After professional mining equipment is connected to the mine pool, bitcoin is obtained through a lot of calculation. Besides the cost of mining equipment, there is also the most important electricity cost. Mining machine is a computer, The required power consumption is not small, and the electricity cost needs to be continuously invested for a long time, so the mining income should be above the electricity cost, so the investment in mining is feasible. It can be divided into the following situations:

1. The cost of electricity is very low or electricity is free, there are some special instries that can enjoy lower electricity prices than ordinary residents, or build their own hydropower plants, etc...

2. The mining output is fixed. Friends who have g mines will know that one of the major obstacles in mining is the difficulty of computing power. Take bitcoin as an example, the number of bitcoins is fixed, but with more and more people digging, the output will be lower and lower, and then the income will be lower and lower. If the electricity cost is fixed, then when the output income is equal to the electricity cost, the output income will be lower and lower, Mining is no longer feasible

3. The currency price is stable. Mining will have the problem of accounting return to the current cycle: output * current currency price electricity cost = net income

mining machinery cost / net income = return to the current cycle

we mentioned that the output is fluctuating, and the currency price is also fluctuating, but we can choose to sell coins under the condition of our own income, which requires a large amount of personal reserved funds, Because once you choose to hoard money, it means that you will not generate revenue before the money price reaches the ideal price, but you need to put in a fixed electricity cost< In the second half of 2017, the virtual currency ushered in a bull market. Before that, whether you buy bitcoin or Ethereum, it's easy to double your assets, but it's a transition to the market in 2018, Most of the quilt cover, and fry money overnight rich have, overnight bankruptcy also have. Similarly, currency speculation can be divided into the following situations:

1. The most common way of currency speculation is to buy at a low price and sell at a high price. It's easy to make money in a bull market. As long as you are optimistic about the currency and find a low price to buy, you can sell by yourself (I suggest that the mainstream currency is better)

2. In private placement, some newly issued but not yet listed coins will be privately raised, that is, crowdfunding. At the beginning, it is a low price, which may be a few cents or even a few cents. In the process of issuing and listing, there are unlimited possibilities. It is very possible to double or even ten times the price, but there are also some cases that can not be launched on the platform or broken, So these are not worth money in hand, just a series of figures. At the same time, private placement is not allowed by the state

3. Contract trading, which is the trading object or subject matter of futures trading, is a standardized contract formulated by the futures exchange to deliver a certain quantity and quality of goods at a specific time and place, and the futures price is achieved through open bidding

generally speaking, contracts can be bought up and bought down. When the market is in a bear market, buying up and currency price rising can bring benefits; Buying down and currency price falling will bring profits. Meanwhile, bear market fluctuation is small, and leverage can be added to increase the amount of capital

therefore, with the development of virtual currency and the recognition of many countries, virtual currency will not only be mentioned in real life, but it is also reliable to invest in virtual currency. However, in different periods, facing different market, there will be different ways of investment. If you choose to hoard money at a high price in a bull market, it is not reliable, So whether you invest in virtual currency depends on how you invest

6. The only way for a miner on Odin chain to obtain POC power is to destroy the original coin, which requires the miner to purchase or obtain Odin by other means. At the same time, miners need to destroy the Odin coin on the Odin public chain when they participate in mining. After destruction, POC rights will be generated from the wallet address, and the Odin obtained from mining will be allocated to the main chain wallet through POC rights proof. The POC conversion of Odin is that one unit of POC is equal to 6.4 Odin tokens.

7. Instead of investing in virtual currency, Li Ka Shing's investment company, Victoria Harbour, has invested in bipay, an internationally renowned bitcoin payment company
South China Morning Post reported on December 27 that Li Ka Shing's Victoria Harbour investment took a stake in bitpay, which is also regarded as a way to "find another way" to dig gold from the virtual currency business
the report continued that a spokesman for bitpay said he was "deeply honored" to support investors including Victoria Harbour investment
nowadays, many international giants have accepted bitcoin payment, such as Microsoft, Dell and so on. In China, the payment function of bitcoin is not feasible, which is mostly a means of speculation. But there are also innovations. For example, Ruitai coin mainly promotes asset packaging, which is a kind of asset voucher, while Qianjin card mainly focuses on overseas luxury purchasing market.

8. 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.

9.

POC particle oxidation catalyst (POC) = particle oxidation catalyst

different from gasoline vehicles, only a few new diesel vehicles adopt exhaust after treatment technology. Automobile diesel engine manufacturers have been improving the engine and its control system to meet the emission standards

The most difficult part is to rece the emission of particulates and nitrogen oxides at the same time in the low temperature lean burn environment

the best effect can be achieved by using diesel lean burn NOx removal catalyst and diesel particulate filter

although this technology already exists, it is very expensive. In most cases, advanced particulate oxidation catalyst POC is used, which is characterized by particulate combustion

The catalyst consists of a new low temperature coating and a metal carrier called Ecocat. At the same time, the conversion of HC and CO can reach 80% - 90%

has been tested on several light and heavy engines and vehicles driven by this type of engine (engines up to Euro 0 to Euro 4 standards). The biggest advantage of this scheme is that the price is relatively cheap and maintenance is not necessary. But the sulfur content in diesel oil should be low

POC is a catalytic oxidizer for particulate matter. The working principle is to catch up the particulate matter, and then burn it through the high temperature of exhaust gas (250 ℃ - 500 ℃), so as to achieve the purpose of recing the particulate matter. POC is widely used in light truck. In addition, POC can regenerate actively and DPF needs human intervention

< H2 > extended data

particulate oxidation catalytic converter (POC) can be used to rece particulate matter in diesel exhaust, which belongs to the category of oxidation catalytic converter. The conversion efficiency of particulate matter is higher than doc, but lower than DPF system. The principle is to make the exhaust gas pass through a multi fold channel without blocking, and the particles are adsorbed in the POC, and the accumulated particles are removed by oxidation combustion

because POC requires a higher working temperature, it needs to be used in combination with DOC, which is called PM Kat system by European heavy truck enterprise man, that is, DOC and POC are integrated. Under the oxidation of DOC catalyst, no in the exhaust gas combines with oxygen to form nitrogen dioxide, and the original NO2 in the exhaust gas enters the POC together. Under the action of the catalyst, the molecular bond of N O2 breaks at a lower temperature, and the generated o burns with the captured C particles to form C O2, thus effectively removing the captured particles

POC can only filter the larger carbon particles, but the ability to capture the carbon particles below PM2.5 is low, and the efficiency of recing PM is 30% - 80%, which is better than doc and lower than DPF. The price of POC is lower than that of DPF and higher than that of doc

10. Lava, as a leader in the POC field, is committed to condensing the global hard disk storage resources, building the underlying framework for it, and building the global "root of trust" based on the original intention of promoting the virtuous cycle of energy and blockchain instry, the basic principle of promoting instrial development by hydropower, and the basic principle of promoting hydropower consumption by instry. Through the consideration and optimization of POC consensus mechanism, lava not only has the advantages of POC everyone mining, computing power sharing, green energy saving, but also covers the existing stacking mechanism, which makes the whole ecology more transparent and improves the community participation.