How to identify a virtual currency
if you don't understand digital currency, you'd better not touch it. The water of digital currency is very deep. Digital currency is even more chaotic, deception is repeated. If you are interested, you can first learn about the crowdfunding project token on coin Ying China platform.
first, strengthen anti-counterfeiting on paper. Paper is the main material for printing banknotes. The main composition of RMB paper is short cotton wool. The paper is smooth, tough, folding resistant, good stiffness, and has certain chemical corrosion resistance. It can be used for a long time without damage. In the fourth set of RMB, except for the three kinds of Jiao coin certificates, watermark is used for the main currency. 1 yuan to 5 yuan coupons are made of square and round ancient money, four sides continuous watermark banknote paper, designed and made by Hu Fuqing. The 10 yuan to 100 yuan coupons are made of watermark banknote paper with fixed characters' heads: the 10 yuan coupons are the heads of farmers in Northern Shaanxi, the 50 yuan coupons are the heads of steelmakers, and the 100 yuan coupons are the side relief images of Mao Zedong. Different from the geometric pattern watermark, the head portrait watermark should not only show the lines, but also show the light and dark levels. Therefore, the process technology is much more complicated. This is also a great progress in the proction process of banknote paper in China. These fixed watermark head portraits are designed and drawn by Hou Yimin and Deng Peng, and Zheng Xinchen, Hu Fuqing, Luo Fuwen, Luo Fuwen and other artists participate in the watermark image carving Xia Guanying et al. Setting safety line in paper is also the main measure of paper anti-counterfeiting. In the 1990 version of the 100 yuan and 50 yuan coupons, a new metal safety line was added. It was added in the paper making process. It was included in the banknote paper, rather than printed on the face. The banknote paper running through the right side of the face can be seen by the naked eye
the second is to strengthen the anti-counterfeiting of ink. Ink is one of the main components of banknote printing. The fourth set of RMB uses a variety of anti-counterfeiting inks, such as colorless fluorescent ink, metameric ink, magnetic ink, etc. Colorless fluorescent ink is a kind of ink that has no color in itself, but can emit bright fluorescence under ultraviolet light. For example, about 100 yuan and 50 yuan coupons of the 1990 edition can be printed with Arabic numerals and Chinese Pinyin face value printed by this ink, and yellow fluorescence can be clearly seen under ultraviolet light. Metameric ink is in the sunlight or light, and general ink is no different, but in ultraviolet light will be bright or become another color, such as: I yuan certificate positive middle part of the yellow green peach tree trunk; On the front of the 2 yuan coupon, the middle part of the flat and convex print is yellowish, and the green bamboo trunk is green; The 5 yuan coupon has an orange red pattern on the middle part of the front (i.e. crane's head, neck and wings); The orange Phoenix on the middle part of the front of the 10 yuan coupon; The top right corner on the back of the 50 yuan coupon is set off by the orange red flower mass printed on the face value, that is, the orange red color of the "50" face value part; 100 yuan coupon front four leaders like the left orange pattern, are using the same color metameric ink. Magnetic ink needs special equipment to detect, the fourth set of RMB tickets number and 50 yuan, 100 yuan tickets front and bottom of the darker lace are using this ink
the third is to strengthen anti-counterfeiting in plate making and printing process. The fourth set of RMB mainly adopts manual engraving gravure printing, gravure connection technology, overprint matching technology and relief connection technology in plate making and printing technology, which greatly improves the anti-counterfeiting function of RMB. Manual engraving gravure printing technology has always been an important means of banknote anti-counterfeiting in the world. Its main characteristics are thick ink layer, strong handle and difficult to . The main scenery patterns of RMB are hand carved intaglio printing, especially the 1990 version with 50 yuan and 100 yuan coupons. The main scenery on the front and back, decorative lace, flower ball, denomination text and other intaglio printing parts are deepened, which makes the carved intaglio printing patterns more three-dimensional. Because all the faces of the fourth set of RMB use the head portraits of characters as the main scenery, the requirements for the intaglio engraving process are much higher than those of the previous sets of RMB. The characters of different nationalities, ages, genders, identities and costumes should be carefully depicted and distinguished through various knife methods. From the face of each ticket, we can see that the carved and intaglio printed head portraits have clear lines and smooth knife technique, which well reflect the spirit of the characters. Each head portrait is an exquisite work of art. Artists participating in the front and back engraving of the full set of tickets include Gao Zhenyu (front of 1 jiao ticket, back of 50 yuan ticket), Su Xihua (front of 10 yuan, 50 yuan, 100 yuan ticket), song guangzeng (front of 5 jiao ticket), Li Bin (front of 2 jiao, 1 yuan, 5 yuan ticket), Xu Yongcai (front of 2 yuan ticket), Wu Yizheng (back of 5 yuan, 10 yuan, 100 yuan ticket), Hua Ruisong (back of 1 yuan ticket), and Xu Yongcai (front of 2 yuan ticket) Xue Shutong (2 yuan on the back of the ticket) 3 Zhao Yayun, Tan huaiying, Geng Shengfa, Ma Jianxi and others participated in the decoration and carving. Gravure connection technology is also a kind of special printing technology for banknotes. It is characterized by obvious color, natural transition of color connection, no white leakage and dislocation, and linear observation under high magnification. Overprint and offset printing technology is to use some special processes to make the front and back patterns of banknotes printed at one time, so that the front and back patterns of specific parts are completely coincident. For example: 1 yuan, 2 yuan and 5 yuan coupons, the small bouquet in the lower left corner of the front and the small bouquet on the back are exactly the same. At present, the flat convex printing connection technology is a relatively reliable anti-counterfeiting technology for RMB. Its feature is that when several different colors are printed on a complete line, there is no overlap or gap. The adoption of all the above advanced printing processes and new banknote printing materials has greatly improved the anti-counterfeiting performance of the fourth set of RMB, which indicates that China's banknote printing and Minting technology has reached the world's advanced level.
"one look": one is to look at the watermark and look after the RMB in front of the light. For more than 10 yuan RMB, you can see the head portrait or flower watermark in the watermark window, and for 5 yuan note, you can see the full version of ancient currency watermark. Second, look at the safety line. There is a clear straight line on the right side of the fourth set of RMB 1990 50 yuan and 100 yuan notes. The "safety line" of counterfeit money is either printed with light color ink, blurred, or manually sandwiched into a silver plastic line. It is easy to find silver white thread ends that have not been cut at the edge of the paper. The fifth set of RMB security line has miniature text, counterfeit words are not clear, lines are easy to draw out. The third is to see whether the color of the pattern on the banknote surface is bright, whether the lines are clear, whether the wiring is in good condition, and whether there is no blank or gap
"two touch": as intaglio printing is adopted for RMB with denomination of more than 5 yuan, the lines form ink tracks protruding from the paper surface, especially in Braille spots, "people's Bank of China", the fifth set of RMB portrait, etc. When you touch these places with your fingers, there is a distinct concave convex feeling. When you swipe the newer banknotes with your fingers, there is obvious resistance. At present, the collected counterfeit money is printed by offset printing, smooth, no bump
"three tins": RMB paper is made of special paper. It is firm and crisp, and newer banknotes will make a crisp sound when they are flicked by fingers. Counterfeit paper soft, thin, sound stuffy, not resistant to rubbing
"four tests": simple instruments are used for fluorescence detection. The first is to detect whether the paper has fluorescence reaction. The RMB paper has not been fluorescent bleached, and there is no fluorescence reaction under the fluorescent lamp, and the paper is dark. The counterfeit paper is bleached and has obvious fluorescence under the fluorescent lamp. The paper is white and bright. Second, there are one or two fluorescent characters in the RMB, which are light yellow. The fluorescent characters of fake RMB are not in the right color, and they are pale white.
1. Watermark is a security measure applied in the process of paper making, which is formed by using special technology to change the degree of fiber dispersion. Due to the need of high technology, complex technology and special equipment, watermark has anti-counterfeiting effect. Under the condition of facing light perspective, we can see the watermark pattern with clear outline, strong three-dimensional sense and relief three-dimensional effect. Watermark is usually divided into full version watermark and fixed watermark. Full page watermark is that the whole face is regularly distributed with several identical watermark patterns; There is no fixed position relative to the pattern printed on the bill. Fixed watermark means that the watermark pattern is fixed in a certain position on the face of the ticket, and it often takes human images, buildings, animals or complete geometric patterns as the subject matter of watermark. Among the fourth set of RMB banknotes in circulation in China, one yuan note, two yuan note and five yuan note all use banknote special paper with full version ancient coin watermark; Ten yuan voucher, five yuan voucher and one hundred yuan voucher use banknote special paper with fixed portrait watermark. The fixed portrait watermark is located on the left side of the front of the banknote, followed by the head of the farmer, the head of the worker and the side head of Mao Zedong
2. Safety line safety line is also a kind of anti-counterfeiting mark applied in the paper making process by using special technology. Its characteristic is that under the condition of facing the light, we can see a regular line with a certain width running through the whole face from top to bottom. In the fourth set of RMB, an opaque safety line is applied to the right side of the front of the 1990 version of the five hundred yuan note and the one hundred yuan note, while no safety line is applied to the 1980 version of the five hundred yuan note and the one hundred yuan note mixed with it
3. Pattern matching is a special banknote printing process. When printing banknotes, a special banknote printing machine is used to make the pattern at a specific position on the front and back of banknotes be printed at one time to form a "printing pattern". It is characterized by the fact that under the condition of facing the light, all lines of two different color patterns at the opposite position of the front and back of the banknote can be seen overlapping completely; At the same time, compared with the pattern observed from one side, the color of the lines of the pattern which is consistent with the perspective of facing light changes slightly e to the complete overlap of different color lines in the relative positions of the two sides. In the fourth set of RMB, the small flowers on the left side of the national emblem and on the right side of the year number on the front side of the one yuan, two yuan and five yuan certificates are all "opposite printing patterns"
4. Multicolor wiring pattern multicolor wiring pattern is also printed by special banknote printing process. It is characterized by a pattern of lines composed of a variety of different colors, different colors of lines at the junction of natural transition, no leakage, no overlap, no dislocation phenomenon. In the fourth set of RMB, the flower and bird patterns on the central part of the front of the one to ten yuan banknotes and the flower groups on the top right of the back of the five hundred yuan and one hundred yuan banknotes are multicolor wiring patterns< Engraving gravure printing engraving gravure printing is also a special banknote printing process. Its printing procts are characterized by rich color, luster, rich layers and raised lines, which have a special texture that other printing methods do not have. Touch the point and line on the gravure pattern with your hand to have concave and convex feeling. Engraving gravure printing is a kind of original gravure printing which is made by engraving artists and plate making experts using hand carving, machine carving and other methods to "carve" the designed pattern on a special metal plate. The pattern on the original gravure printing is composed of points and lines concave into the metal plate. Using the special plate making process, the original plate is made into a printing plate, and combined with the special banknote printing process, the ink on the printed proct is finally protruded on the paper surface. Engraving gravure printing has always been one of the main anti-counterfeiting measures for banknotes because of its special techniques, special printing materials, printing equipment and unique printing quality. Among the fourth set of RMB currently in circulation, the front portrait, line name, lace, Braille dot, denomination number and the national emblem, scenery, lace, minority characters, line name and Chinese pinyin on the back of the one yuan to one hundred yuan voucher are all engraved gravure printing
6. Colorless fluorescent pattern colorless fluorescent pattern is printed with ink containing fluorescent material. Its characteristic is that it is invisible under ordinary light, but only under the ultraviolet light with specific wavelength, it can show yellow green pattern. In the fourth set of RMB, the words "Wu Shi", "50", "Yi" and "100" are printed on the left and right sides of the front face of the 1990 version of five hundred yuan coupon and one hundred yuan coupon respectively with colorless fluorescent ink. However, the 1980 version of the five hundred yuan voucher and one hundred yuan voucher have no such anti-counterfeiting features
7. Magnetic imprint magnetic imprint is printed with ink containing magnetic material. Test the magnetic mark on the ticket with a magnetic detector, and the magnetic signal will be displayed. In the fourth set of RMB, magnetic marks are printed on the black gravure on the front and back of the five hundred yuan and one hundred yuan coupons (including the 1980 and 1990 versions)< Second, the anti-counterfeiting characteristics of metal coins< In the current new version of metal currency, dime, five dime and one round coins are made of special aluminum alloy, special copper alloy and nickel plated steel core respectively; The material of metal currency is special aluminum alloy
2. In the current circulation of 5-dime coins with special structure, the wire teeth on the edge are discontinuous, which is called "discontinuous tooth wire". The commemorative coin issued by the people's Bank of China to commemorate the 100th anniversary of Chairman Mao Zedong's birth uses advanced symmetrical scrolling technology at the edge. Two groups of symmetrical scrolling are "Zhong Guo" and "∪". We call it "peripheral scrolling"< Third, the methods of identifying the true and false RMB banknotes can be summarized as "seeing, touching, hearing, pen extension and instrument detection"
1. It depends on whether the watermark of banknotes is clear and whether there is a three-dimensional effect of relief. At present, there are watermarks in counterfeit banknotes, but they are printed with colorless ink. Although they have outlines, they do not have the special texture of watermarks of real banknotes; See whether there is a safety line, some counterfeit money also has a safety line, but it is also made of ink imitation printing, and there is no three-dimensional sense; Check whether the lines of the pattern are completely consistent, whether the color transition of the polychromatic wiring pattern is natural, and whether there is overlap and dislocation; See if the gravure pattern is composed of dots and lines. At present, most of the counterfeit banknotes are copied by color copier and offset printing technology. All the patterns are composed of a variety of dots with different depths. There is no characteristic of gravure printing pattern, which can be identified by observing with a magnifying glass
2. Touching the concave and convex part of the real coin by hand has the feeling of concave and convex, while the counterfeit coin does not have this characteristic, so it feels smooth by hand
3. The paper used to print banknotes is very special, tough, stiff and folding, and it will make a clear sound when it is flicked or shaken by hand; The paper used for counterfeit money is ll when it shakes, and the paper has no characteristics of real money paper
4. If a sheet of tissue paper is applied to the watermark position and the security line position of the banknote, pencil extension is used. If it is a real banknote, there will be a clear and hierarchical watermark outline and a continuous security line extension mark from top to bottom, but the counterfeit banknote does not have the above effect
5. Under the illumination of fluorescent lamp, the real coin will show yellow green fluorescence at a specific position; Some of the counterfeit coins of the 1990 edition of the five hundred yuan and one hundred yuan certificates do not have the above characteristics, while some have fluorescent patterns, but the hue is different from that of the real coins. The magnetic imprint was detected by magnetic detector. It needs to be reminded that when purchasing banknote detection instruments, we must choose the instruments that have passed the appraisal of relevant departments of the people's Bank of China, otherwise we will confuse the fake with the real or confuse the real with the fake
the following simple methods can be used to identify the true and false metal coins. Feel or weigh the weight of a single metal coin; The color, diameter, edge thickness and the clarity of the pattern of the metal coins were compared by visual inspection; A round of metal coin can be sucked up by a magnet
if you have doubts about the authenticity of RMB, you can make "comprehensive judgment" according to the main anti-counterfeiting features and identification methods of RMB mentioned above; You can also find a real RMB with the same denomination and year of issue for careful comparison. You need to find the differences between the two, not the similarities. However, in case of more complicated situation, it should be sent to the bank for detection and identification, because there are other technical secrets on the RMB, but only the technical authority has mastered them.
1. Touch: because the U.S. dollar is made of a mixture of cotton and flax fiber, although it is printed with a concave convex board, if it is a real banknote, the concave convex handle will be more obvious, especially in the position of the collar of the portrait
2. Listen: if the real banknote is printed with special paper, it will be tough and straight. If you flick it with your hand, it will make a crackling sound, but if it's fake, it won't
3. Look: real banknotes are mixed with red and blue filaments. Counterfeit banknotes can't do this technology. Counterfeit banknotes can only be painted
extended information:
precautions:
1. Don't blindly exchange foreign currency for investment: foreign currency deposit financing is suitable for those investors who hold foreign currency and don't exchange it into RMB in the short term. In other words, if they no longer need foreign currency, the best way is to exchange it into RMB
Don't ignore the importance of foreign currency deposit period: the foreign currency deposit period of Chinese banks is generally divided into one month, three months, six months, one year and two years, while the deposit period of foreign banks is generally less than one year3. The foreign currency deposit business of some banks has a deposit period of 3 months to 2 years, and the expected annualized interest rate level is the same, so investors had better choose the one with short term to enhance flexibility
Generally speaking, the threshold of foreign banks will be higher, especially for some preferential activities with high expected annualized interest rate. In addition, before depositing foreign currency, investors should specifically ask whether there are other fees, which is an important part of the actual expected annualized income. Some foreign banks have to charge management fees