How many kinds of virtual currency trademarks are there

1. In addition to bitcoin, there are many other virtual currencies in the virtual world< Liteoin (LTC) was released on October 7, 2011, and is currently the most valuable counterfeit currency, accounting for about 2% of BTC's market value. The current unit price is US $2.31, with a total currency value of US $38 million

this is also a distributed (decentralized) digital currency. Unlike the sha256 mining algorithm used by bitcoin, LTC adopts scrypt algorithm. Scrypt algorithm uses sha256 as its subroutine, and scrypt itself needs a lot of memory. Each hash is used as the seed of the input, and then it needs a lot of memory to store another pseudo-random sequence to generate the pseudo-random points of the sequence and output the hash value. In the mining of BTC (bitcoin), it is not enough to rely on simple graphics card mining (it takes about ten to dozens of days to dig a BTC with general configuration graphics card). The emergence of various expensive mining machines has raised the threshold for ordinary people to get BTC through mining, while LTC has certain advantages in using PC graphics card mining This passage comes from Zhihu.)

compared with BTC, litecain has made a little improvement in technology. If BTC is gold now, LTC is silver for the time being

the biggest advantage of litecoin is that it can confirm the authenticity faster. The virtual currency is designed and maintained by Charles Lee. Bitcoin transactions need to be verified, and the average verification time is more than 10 minutes. Most transaction websites need 1 hour to verify. The average transaction confirmation time of liteoin is 2.5 minutes. Developers claim that shortening the verification time increases the practicability of virtual currency. The bitcoin mining efficiency of customized machine and AMD GPU is the highest, making it almost unprofitable for miners using CPU mining. Litecain's mining excludes GPUs and custom processors, so it doesn't rely too much on a small number of professional miners

ppcoin

ppcoin (PPC) was released on August 19, 2012, which has improved the original technology of BTC. Use proof of make and add the concept of coin age

ppcoin is a bifurcated project of bitcoin, which aims to achieve energy efficiency and maintain the best performance of the original bitcoin as far as possible. The unit price of ppcoin is US $0.22 and the total currency value is US $4 million

ppcoin does not have a fixed upper limit of money supply, but it does not mean that ppcoin has obvious inflation compared with bitcoin. Bitcoin can be compared to gold. The annual inflation rate of gold is about 1-3%. Although gold has no known upper limit of money supply, we still know that it is a reliable scarce commodity

ppcoin has two types of casting: work certificate and equity certificate. The coinage rate of working proof is affected by Moore's law, which depends on the doubling of our working proof ability. What we all know is that Moore's law will eventually come to an end. By then, the ppcoin of inflation may be close to the gold level. The annual maximum inflation rate of certificate of equity is 1%. At the same time, ppcoin's transaction costs were destroyed to fight inflation. So on the whole, the coin design of ppcoin is still a very low inflation design in the future, which can be comparable with bitcoin<

ppcoin's reward is similar to lottery, which will determine the winning probability according to the number of ppcoin held by miners. Sunny king, one of the founders, said that their design is based on a new concept of long-term energy efficiency

terracoin

terracoin (TRC) was released on October 26, 2012, with a total currency of 42 million. The speed of each block is 2 minutes, slightly faster than LTC. There is not much special in technology, similar to the proction of BTC halved every four years

however, the operation team seems to have a strong business background and may be better than other bitcoins in circulation. The development of virtual currency is getting more and more attention. Now some teams with business background will accelerate the development of virtual currency

namecoin

namecoin is a distributed domain name system based on bitcoin technology. Its principle is the same as bitcoin. The first release date of this open source software is April 18, 2011

namecoin is generated from an original block which is different from bitcoin's main trading block. It uses a new blockchain, which is independent of bitcoin's blockchain. Because it is based on bitcoin, the security, distribution, robustness, encryption and migration of domain names are guaranteed mathematically. You can dig bitcoin and namecoin at the same time

this project was discussed and proposed by bitdns, which is mainly dissatisfied with the defects of DNS. The only top-level domain name of namecoin is. Bit. It costs namecoin to register a. Bit domain name

in addition, Q currency, Shanda currency, starting point currency and various online game currencies are also virtual currencies.

2. Hello, belongs to 36 categories, you can choose on our website for reference, hope to help you

3. Currency transaction belongs to category 36 3602 group of trademark classification
according to the statistics of signpost.com, there are 24023 trademarks registered in currency transactions< How to choose other sub categories ring registration:
1. There are 612 registered trademarks (capital investment, group number: 3602), accounting for 2.55%
2. There are 575 registered trademarks (guarantee, group number: 3606), accounting for 2.39%
3. There are 543 registered trademarks (brokerage, group number: 3605), The proportion of registration is 2.26%
4. 532 trademarks (financial management, group number: 3602) are registered, accounting for 2.21%
5. 462 trademarks (trust, group number: 3608) are registered, accounting for 1.92%
6. 423 trademarks (Electronic transfer, group number: 3602) are registered, The registration rate is 1.76%
7. There are 414 trademarks in the category of financial information (group number: 3602), accounting for 1.72%
8. There are 399 trademarks in the category of online real-time currency transaction (group number: 3602), accounting for 1.66%
9. There are 376 trademarks in the category of financial loan (group number: 3602), The registration rate is 1.57%
10. There are 363 trademarks selected for registration (financial consulting, group number: 3602), accounting for 1.51%

4. The exchange currency belongs to group 3602 of category 36 of trademark classification
according to the statistics of the signpost website, 215780 trademarks have been registered for currency exchange< How to choose other sub categories for registration:
1. 7385 trademarks (financial services, group number: 3602) were registered, accounting for 3.42%
2. 5862 trademarks (capital investment, group number: 3602) were registered, accounting for 2.72%
3. 5495 trademarks (financial management, group number: 3602) were registered, The proportion of registration is 2.55%
4. 5372 trademarks are registered (guarantee, group number: 3606), accounting for 2.49%
5. 5286 trademarks are registered (electronic transfer, group number: 3602), accounting for 2.45%
6. 4836 trademarks are registered (financial loan, group number: 3602), The proportion of registered trademarks is 2.24%
7. There are 4742 registered trademarks (brokerage, group number: 3605), accounting for 2.2%
8. There are 4650 registered trademarks (financial consulting, group number: 3602), accounting for 2.15%
9. There are 4520 registered trademarks (banking, group number: 3602), The registration rate is 2.09%
10. There are 4275 trademarks selected for registration (financial information, group number: 3602), accounting for 1.98%

5. As long as you open the Oriental Fortune member, you can offer a reward

6. Monetary Affairs belong to group 3605, category 36 of trademark classification
according to statistics, 138 trademarks have been registered for monetary affairs< How to choose other sub categories ring registration:
1. There are 7 trademarks in the category of (insurance, group number: 3601), accounting for 5.07%
2. There are 7 trademarks in the category of (monetary affairs, group number: 3602), accounting for 5.07%
3. There are 7 trademarks in the category of (financial affairs, group number: 3602), The registration rate is 5.07%
4. There are 7 trademarks in the category of (currency affairs, group number: 3607), and the registration rate is 5.07%
5. There are 6 trademarks in the category of (currency affairs, group number: 3603), and the registration rate is 4.35%
6. There are 6 trademarks in the category of (currency affairs, group number: 3601), The proportion of registration is 4.35%
7. There are 6 trademarks in the category of registration (real estate affairs, group number: 3604), and the proportion of registration is 4.35%
8. There are 6 trademarks in the category of registration (monetary affairs, group number: 3604), and the proportion of registration is 4.35%
9. There are 6 trademarks in the category of registration (monetary affairs, group number: 3606), The registration rate is 4.35%
10. There are 6 trademarks in the category of (currency affairs, group number: 3608), and the registration rate is 4.35%

7.

Tension f = KX. X is the length of the change and K is the scale factor

tensile force F = ma. M is the gravity of the object and a is the acceleration of the object

the pull force is defined according to the effect of the force. From the nature of the force, the pull force is also elastic. From the object of the force, the pull force may be internal force or external force

If an object is subjected to resistance and pull force, if the object moves in a straight line at a constant speed or remains stationary, then f pull = f resistance, the pull force and drag force are a pair of balanced forces, and the object is in a state of two forces balance (the resultant force is zero)

under certain conditions, if the object is accelerating, then f-pull & gt; F resistance; If the object decelerates, then f pull & lt; F resistance

when the car moves in a straight line at a constant speed, the pulling force and friction force are balanced

extended data

the mutual traction force existing on both sides of any section inside the object under the action of tension

note that tension and liquid surface tension are not the same concept‘ The surface tension of water is the intermolecular attraction, which tries to keep the surface area of the liquid to the minimum. Of all shapes, only the spherical one has the smallest surface area. Therefore, the liquid in weightlessness is spherical

crustal movement proces pressure and tension, which are common in convergent plates, such as the collision between Indian Ocean plate (with Indian continent in front) and Eurasian plate. Pull is common in separated plates, such as seafloor spreading, Red Sea rift, East African rift, etc. In crustal movement, pressure and tension are complementary

For example, the generation of many inland fault zones is not caused by the pulling force of separated plates, but by the convergent plates, such as the pressure generated by the subction of oceanic plate under the continental plate, which causes the uplift of the continental block, and the uplift will inevitably cause the tensile fracture of the weak link

for example, in the transition zone from Cheng plain to Qinghai Tibet Plateau, the Longmenshan fault zone, where the crust passes from 35 km to 65 km on average (called stress concentration point in material mechanics)

8. At the beginning of the state is rising at a constant speed, a and B are balanced, a by gravity, spring force and supporting force, B by gravity, spring force, supporting force and rope tension. At the moment when the rope is cut, the length of the spring does not change, so the elastic force does not change. A is not affected, but the force is still balanced. The resultant force direction of B is upward along the rope, so the AB option is wrong. The complete state indicates that AB is not supported by the inclined plane at this time. At this moment, the length of the spring will not change immediately, so a is only affected by the spring force and gravity, the resultant force is mgcos30, and the direction is perpendicular to the inclined plane downward. When B is completely weightless, the resultant force of B is its gravity, so the instantaneous acceleration of B is g, D is wrong, so the answer is C

9. Pulling force: the force that separates objects.
supporting force: the force (reaction) opposite to gravity

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