Total bitcoin in 2019

1. Although many people didn't seize the opportunity of bitcoin's boom, it's not too late to invest in virtual currency. Because there are more currency categories in the virtual currency market, investors have more choices, and the market is more standardized< As the originator of virtual currency, bitcoin's investment value still exists although its market situation is far worse than before. On many virtual currency platforms, the share of bitcoin transactions accounts for a large proportion. Take domain kingdom for example, its transaction volume accounts for 75% of the total amount of virtual currency transactions
lightcoin is inspired by bitcoin (BTC) and has the same implementation principle in technology. The creation and transfer of lightcoin is based on an open source encryption protocol and is not managed by any central organization. Lightcoin aims to improve bitcoin. Compared with bitcoin, lightcoin has a significant difference
the token on the Ethereum blockchain is called ether, and its code is eth. It can be traded in many cryptocurrency markets, and it is also the medium used by Ethereum to pay transaction fees and computing service fees
xem is a new type of digital virtual coin based on Java. It adopts the newly invented synchronization solution based on proof of importance poi. It is said that xem is the first cryptocurrency to realize multi signature at the block chain level
in fact, bitcoin, Leyte or ether can be bought and sold in 2019. The important thing is that virtual currency can also be bought and sold in the form of contract transaction
the so-called contract transaction means that no matter whether the market price is rising or falling, as long as the correct trading direction can be judged at the corresponding time, the investors can make profits, and the transaction cost as low as $5 in the realm Kingdom makes it easier for ordinary investors to participate in it
in general, 2019 is full of new opportunities, and some potential digital currencies have also been well developed to a certain extent. But when we invest, we must not be too careless. We must choose a formal and secure platform.

2. The concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's idea, open source software was designed and released, and P2P network was built on it. Bitcoin is a kind of P2P digital currency

"Spring Festival red envelope" refers to the rising market of bitcoin ring the Spring Festival. Big V jiangzhuo'er once predicted the end of bitcoin on Weibo, and then it stopped the sharp decline since November 2018 and began to shock. In the same microblog, it was also mentioned that bitcoin bottomed out before the Spring Festival, which was thought by fans to be very likely to come true
latest bitcoin Market:
bitcoin (BTC) market_ Golden Finance

24459.78 & # 160; RMB 53.02 + 0.22%

02-11 14:27 Trading

3.

Now the price of bitcoin is hovering around $37800. For the price trend of bitcoin in 2019, cailu.com will discuss with you

1. First of all, we know that bitcoin is a virtual digital currency, which is an upgraded proct on the blockchain. At present, the transaction volume of bitcoin is the largest among the digital currencies. In the development of bitcoin, the speed is not very fast, the infrastructure is complete, and there are good regulatory policies. The price in 2019 can be expected

2. The attitude of the regulatory authorities: bitcoin is not protected by law in our country at present. It is a trading proct imported from or abroad. At present, it is still a proct that needs to be investigated in our country. The regulatory authorities should make corresponding policies on how the investigation results are suitable for our domestic transactions, and we can expect the price rise in the later period

3. For investors, to enter the digital money market is to gain profits from this market, but bitcoin is a very risky transaction. In addition, bitcoin has no limit on the rise and fall, and the risk is uncontrollable. According to the 28 law of the investment market, only a few people can make profits

generally speaking, we can look forward to bitcoin in 2019. At present, we can look forward to the $4000 mark. If we can break through it, the price may go up. Of course, we can't know what kind of news will appear in the future. If there is good news, the price of bitcoin will rise in 2019

4. It can't be simply attributed to the exchange. Sometimes there are sudden short-term fluctuations, and the exchange does participate. But the main topic is about the monthly time span, which is difficult for the exchange to control. It is more the result of the joint operation of hot money and large institutions. However, the sharp decline of the overall currency value can't be separated from the basic economic principle: the relationship between supply and demand, This is beyond anyone's control

5. Manual shooting skills of SLR camera
1. Take close-up pictures of small still objects, such as flowers, birds and insects:
use AV file, the aperture should be f5.6 or below, the focal length should be more than 50, and try to shoot within 1m to make the background virtual
if the light is good, ISO 100, if the light is bad, ISO should be within 400<

2. Shooting people:
basically use a large aperture (within f5.6) and a focal length of more than 50 mm. The shooting distance depends on the whole body, half body and big head, which makes the background virtual. Use AV file
good light, iso100, bad light, iso400
people in motion use tracking to reflect the sense of motion (see the shooting of moving objects below for details)<

3. Shooting:
AV file, use the appropriate aperture, above F8, the focal length is arbitrary, but generally the wide-angle end has distortion, use it as appropriate<

4. Shooting night scene:
upper tripod, AV gear, custom white balance or incandescent lamp, aperture above F8, small aperture can make the light proce starlight effect, use the reflector pre rising function to rece the vibration caused by the reflector lifting after pressing the shutter; And cover the viewfinder with the square cover on the strap to prevent stray light from entering from the back and affecting the image quality; ISO 200, as far as possible to make the exposure time longer, so that some people who have no intention to walk away from the screen disappear, leaving no traces, clean the scene
for example, when taking a square with people coming and going, you can use a very small aperture of about F20 and iso100. In this way, the exposure time will be very long, and the moving figures will not stay in the photos! The square will be clean<

5. Shooting fireworks:
using shutter line and B shutter, you can shoot multiple fireworks overlapping effect<

6. Shooting things:
when the light is good: AV, the aperture size should be handled according to the circumstances; Large depth of field can be obtained by using aperture above F8, and shallow depth of field can be obtained by using small aperture
if you want to have a very dynamic effect, you can use the TV gear, the shutter is about 1 / 30, when you focus and press the shutter, the lens will follow the object at an appropriate speed, which will proce a very dynamic effect
poor lighting: we can only handle it according to our own discretion, plus use the follow-up camera<

7. Shooting running water or fountain:
using TV and about 1 / 50 shutter speed, you can shoot Satin effect. If you use too fast shutter speed, the fountain will shoot discontinuous water drops<

8. Taking photos at night:
use tripod to adjust white balance, and automatically or custom white balance; iso100-400 AV gear, aperture about F8, use slow synchronous flash, rear curtain flash mode; At this time, the flash will flash twice, press the shutter to flash once, and flash again before the end of exposure, so don't leave before flashing twice
in this way, the characters can be clear and the background neon is beautiful, so that the background will not be too dark e to insufficient exposure< No matter what you shoot, don't shoot with the maximum aperture unless you want to keep a safe shutter
2. Please use the aperture of F8 ~ F11 as much as possible when shooting scenery
3. The maximum aperture can be reced by 1-2 levels when taking close-up of people and still life
4. The safety shutter should be controlled above the reciprocal of the focal length as far as possible. The wide-angle shutter should also be more secure at more than 1 / 30 second. If the shutter is insufficient, please increase the aperture or ISO<

metering method:
1. Don't measure the light to the sky or the darkest place. Go to the middle value
2. According to your subject matter, make good use of the metering mode (balance metering, point metering, central key metering...)
3. If the light measurement is not accurate, please use AE lock to expose and lock the gray things around you before shooting
4. Try not to measure the light on white or black objects, otherwise remember to rece eV for black and increase eV for white<

EV is exposure compensation.
exposure compensation is also an exposure control method, which is commonly used in ± If the ambient light source is dim, the exposure value (such as + 1eV, + 2eV) can be increased to highlight the clarity of the picture
most of the small digital cameras adjust the exposure compensation through the menu
in the process of shooting, if you press half of the shutter, the LCD will display pictures similar to the final effect picture, focusing and exposure will start. The exposure at this time is exactly the exposure of the final picture. If the picture is obviously bright or dark, it means that the automatic metering accuracy of the camera has a large deviation, and the exposure compensation should be enforced, but sometimes the brightness displayed ring shooting is different from the actual shooting result. Digital camera can browse the picture immediately after shooting, at this time, you can more accurately see the brightness of the picture, there will be no difference. If the shooting result is obviously bright or dark, it is necessary to re shoot and force the exposure compensation
the shooting environment is dim, and the brightness needs to be increased. When the flash cannot work, the exposure can be compensated and the exposure can be increased appropriately. For exposure compensation, if the photo is too dark, increase the EV value. Every 1.0 increase in EV value is equivalent to doubling the amount of light intake. If the photo is too bright, decrease the EV value. Every 1.0 decrease in EV value is equivalent to doubling the amount of light intake. The compensation interval can be adjusted in 1 / 2 (0.5) or 1 / 3 (0.3) units according to different cameras
when the white object to be photographed looks gray or not white enough in the photo, it is necessary to increase the exposure. In short, "the whiter the object is, the more white the object is." this seems to run counter to the basic principles and habits of exposure. In fact, it is not. This is because the main body of the camera is often the center of the light measurement, and the White main body will make the camera mistakenly think that the environment is very bright, As a result, the exposure is insufficient, which is also a common problem for most beginners
because the shutter time or aperture size of the camera is limited, it is not always able to reach the 2eV adjustment range, so the exposure compensation is not omnipotent, and it may still be underexposed in too dark environment. At this time, it is necessary to consider cooperating with the flash or increasing the ISO sensitivity of the camera to improve the brightness of the picture
generally speaking, the smaller the brightness contrast of the scene, the more accurate the exposure, otherwise, the larger the deviation. The grade of the camera is high and low. If the grade is high, the metering is more accurate, and if the grade is low, the deviation will be increased. If it is a traditional camera, the tolerance of film is relatively large, and the exposure deviation will not have a big problem within a certain range, but the CCD tolerance of digital camera is relatively small, and slight exposure deviation may affect the overall effect
in a word, the adjustment of exposure compensation is determined by experience and sensitivity to color. Users must compare the image quality, clarity, restoration degree and noise size under different exposure compensation to get the best picture

note:
the aperture in Canon's manual refers to the F value. The larger the aperture, the greater the depth of field
generally speaking, aperture refers to aperture, which is inversely proportional to F. the larger the aperture, the smaller the depth of field
AV -- aperture priority auto exposure
TV -- shutter priority auto exposure
AE auto exposure
AF auto focus
AF-S -- single auto focus, the same as saf. The opposite is continuous autofocus
MAF - monitor AF, which can shorten the focusing time. The camera will adjust the focus before half pressing the shutter button, so that you can compose with the adjusted focus. When the shutter button is half pressed and AF locking is completed, the focus will be locked
ev - exposure value, which is usually used in exposure compensation
ISO sensitivity. Each difference of sensitivity is equivalent to the corresponding exposure value of aperture or shutter
brother, if you have time, go to ZhongGuanCun video forum and see the forum.

7. 1. The total number of NGK tokens is limited to 10, and there is no mechanism for additional issuance. Except for the pre g 60 million, the rest of the tokens need to be released through computing power, and the release cycle is six years and 98 days
2. NGK token has circulation value. During the continuous implementation of the public chain system, with the continuous expansion of the business volume of Xingmeng investment company and the eight sectors, it will inject a large number of users into the public chain and effectively drive the ecology of the public chain token

3. NGK's development team will make constructive planning for the ecology of public chain, continuously deepen the value of token through application scenarios, transaction needs, network consensus and other aspects, so as to achieve a strong business background of NGK

4. The consensus mechanism adopted by ngk.io public chain is completely open to the community. Users can enter the public chain system through a low threshold way. From this, we know that NGK is a public chain project really promoted by the community, and then the public chain will give corresponding rewards to the contributors, so a large number of consensus participants will join the system

5. NGK is built through the relationship between supply and demand. Due to the continuous expansion of the market volume, the demand for tokens is also increasing. However, the release speed and quantity of tokens are far lower than the market demand, resulting in the market environment of short supply and demand, which promotes the price of NGK tokens to achieve 100 times and 1000 times.

8. Now there are those who sell mining plug-ins. You can go to Yuanbao merchants in the district to buy Mining plug-ins. If you dig by yourself, you are too tired!

9. Yes, when it was released, it showed that its constant number was 21 million. With the passage of time and the efforts of the miners, the number left on the market is less than 2.5 million.

10. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity. The monetary system used to have no more than 10.5 million in four years, after which the total number will be permanently limited to about 21 million. In April 2019, bitcoin again reached the $5000 mark, a new high of the year