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Complete traceable blockchain
Publish: 2021-03-26 19:59:31
1. Traditional authentication is easy to die out, easy to tamper, strong technology dependence and so on. The unique anti tamper, traceability, multi-party participation and other characteristics of blockchain technology are beneficial to avoid these problems
in the face of the growing demand for electronic data, the traditional way of certificate keeping graally reveals the shortcomings of high cost, poor convenience and low reliability. The blockchain has the characteristics of tamper proof, which can fix the electronic data when the data is generated. Blockchain technology has broad development prospects and wide application scenarios, and can be applied in more places in the future. Cipher finance mimacaijing captures blockchain information.
in the face of the growing demand for electronic data, the traditional way of certificate keeping graally reveals the shortcomings of high cost, poor convenience and low reliability. The blockchain has the characteristics of tamper proof, which can fix the electronic data when the data is generated. Blockchain technology has broad development prospects and wide application scenarios, and can be applied in more places in the future. Cipher finance mimacaijing captures blockchain information.
2. Of course. One of the characteristics of blockchain is decentralization, traceability and non tampering of information. Now commodity traceability has always been a hot area for blockchain technology landing. As early as 2017, tmall global launched the global traceability plan to track the information of imported commodities by using blockchain technology
the traceability of blockchain technology is used to increase the traceability and security of commodities through the deep combination of logistics management, commodity anti-counterfeiting, commodity traceability, manufacturing management, instry collaboration and other fields. Password finance, focusing on blockchain information.
the traceability of blockchain technology is used to increase the traceability and security of commodities through the deep combination of logistics management, commodity anti-counterfeiting, commodity traceability, manufacturing management, instry collaboration and other fields. Password finance, focusing on blockchain information.
3. Let's take vonetracer, the blockchain traceability platform of wangchain technology, as an example. Blockchain technology can record all links such as proct planting, factory manufacturing, logistics transportation, warehousing and sales on the chain. After users get the proct, they can scan the QR code to see the traceability of the proct.
4. What are the e-commerce sources of blockchain traceability< According to the introction, the food supply chain involves many links such as proction, transportation, storage and sales, so the control of food quality is extremely complex. As a technology with decentralization as the core, the block chain is open and transparent among all parties, So as to effectively form a chain of information and value sharing. Because the blockchain has the feature that the data can not be tampered with, once the data is uploaded, it can not be changed. Therefore, it is easier to make the source traceable and the destination traceable, and truly realize the responsibility traceability< Specifically, the identification number attached to each batch of goods is unique, recording a series of information from planting, processing to store sales. By scanning the QR code on the proct label, consumers can fully grasp the real information of each stage from the source of the supply chain to the terminal. This approach can not only enhance consumers' impression on the quality of Carrefour procts, but also enhance their trust in Carrefour brand; To some extent, it can effectively urge the upstream of the supply chain to improve the quality and safety level
so far, the food safety issues that consumers are most concerned about will also be strongly guaranteed. Carrefour believes that the use of blockchain can effectively help consumers regain confidence and rebuild their trust in the food instry
in fact, it has become a trend to apply blockchain technology to commodity traceability scenarios. Previously, tmall also applied blockchain technology to commodity traceability scenarios in this year's "double 11". It is reported that in tmall International Mall ring the "double 11" period, the commodities traced by blockchain will cover more than 100 countries and regions, and the number of commodities will reach 150 million. The commodities involved mainly include diamonds, imported milk powder, imported health care procts and other cross-border commodities. In addition, Wuchang rice, Maotai (600519, Guba) and other high-end liquors and Pingwu honey will also use blockchain traceability
Third, the combination of online and offline
Suning e-buy launched the blockchain commodity traceability system ring "618" this year. It is understood that ring the "618" period, Suning e-buy's self-developed block chain commodity traceability system was fully opened in Suning e-buy's online and offline stores, with two lines to ensure the quality of goods and reject fakes. Suning applies commodity anti-counterfeiting traceability blockchain technology to track and record the proction, processing, transportation, circulation, retail and other links of commodities, which is realized through the wide participation of all parties in the upstream and downstream instries. Suning easy to buy users in the purchase of goods, as long as the scan proct traceability source code, you can "one click" query proct information< (4) it is suitable for regulatory or instrial closed-loop scenarios.
Wang Maolu, chairman of consensus digital, once told Securities Daily that "blockchain technology is suitable for anti-counterfeiting traceability of commodities, especially for regulatory or instrial closed-loop scenarios. The combination of the two characteristics of blockchain data non tampering and transaction traceability can eradicate the problem of fake and shoddy procts in the process of proct circulation in the supply chain, solve the trust problem existing in the traditional traceability, and protect the rights and interests of consumers. "
so far, the food safety issues that consumers are most concerned about will also be strongly guaranteed. Carrefour believes that the use of blockchain can effectively help consumers regain confidence and rebuild their trust in the food instry
in fact, it has become a trend to apply blockchain technology to commodity traceability scenarios. Previously, tmall also applied blockchain technology to commodity traceability scenarios in this year's "double 11". It is reported that in tmall International Mall ring the "double 11" period, the commodities traced by blockchain will cover more than 100 countries and regions, and the number of commodities will reach 150 million. The commodities involved mainly include diamonds, imported milk powder, imported health care procts and other cross-border commodities. In addition, Wuchang rice, Maotai (600519, Guba) and other high-end liquors and Pingwu honey will also use blockchain traceability
Third, the combination of online and offline
Suning e-buy launched the blockchain commodity traceability system ring "618" this year. It is understood that ring the "618" period, Suning e-buy's self-developed block chain commodity traceability system was fully opened in Suning e-buy's online and offline stores, with two lines to ensure the quality of goods and reject fakes. Suning applies commodity anti-counterfeiting traceability blockchain technology to track and record the proction, processing, transportation, circulation, retail and other links of commodities, which is realized through the wide participation of all parties in the upstream and downstream instries. Suning easy to buy users in the purchase of goods, as long as the scan proct traceability source code, you can "one click" query proct information< (4) it is suitable for regulatory or instrial closed-loop scenarios.
Wang Maolu, chairman of consensus digital, once told Securities Daily that "blockchain technology is suitable for anti-counterfeiting traceability of commodities, especially for regulatory or instrial closed-loop scenarios. The combination of the two characteristics of blockchain data non tampering and transaction traceability can eradicate the problem of fake and shoddy procts in the process of proct circulation in the supply chain, solve the trust problem existing in the traditional traceability, and protect the rights and interests of consumers. "
5. How to get to London is like you don't know how to get to London! "?
6. It can provide information of procing area for consumers and make people feel more at ease.
7. 1. Walk 130 meters from Guangzhou electronic information school to Tongxin south station, take No.189 (4 stops), No.36 (5 stops) to Guangyuan Middle Road station, transfer to 257 Express (6 stops), No.257 (9 stops) to Tianhe passenger station, transfer to Y12 Asian Games special line (17 stops) and get off at Guangzhou International Sports Performance Center. Walk about 70 meters to Guangzhou International Sports Performing Arts Center
2 walk about 180 meters from Guangzhou electronic information school to Tongxin south station, take bus 278 (take 8 stops) to Shipai village station, then transfer to bus 506 a (take 36 stops), bus 506 (take 37 stops) to Luogang Dalong village station. Cross the road and walk about 200 meters to the left to Guangzhou International Sports Performing Arts Center
3 walk about 180 meters from Guangzhou electronic information school to Tongxin south station, take bus No. 189 (take 1 station) to Xiaobei station 1, go ahead to entrance / exit b of Xiaobei station, and then take Metro Line 5 (take 18 stations) to entrance / exit a of Wenchong station. Take about 40 meters to Wenchong market station, transfer to Y11 Road (take 8 stops) and get off at Guangzhou International Sports Performing Arts Center terminus
Tianhe passenger station terminus, transfer to Y12 Asian Games special line (take 17 stops) and get off at Guangzhou International Sports Performing Arts Center terminus. Walk about 70 meters to Guangzhou International Sports Performing Arts Center
2 walk about 180 meters from Guangzhou electronic information school to Tongxin south station, take bus 278 (take 8 stops) to Shipai village station, then transfer to bus 506 a (take 36 stops), bus 506 (take 37 stops) to Luogang Dalong village station. Cross the road and walk about 200 meters to the left to Guangzhou International Sports Performing Arts Center
3 walk about 180 meters from Guangzhou electronic information school to Tongxin south station, take bus No. 189 (take 1 station) to Xiaobei station 1, go ahead to entrance / exit b of Xiaobei station, and then take Metro Line 5 (take 18 stations) to entrance / exit a of Wenchong station. Take about 40 meters to Wenchong market station, transfer to Y11 Road (take 8 stops) and get off at Guangzhou International Sports Performing Arts Center terminus
Tianhe passenger station terminus, transfer to Y12 Asian Games special line (take 17 stops) and get off at Guangzhou International Sports Performing Arts Center terminus. Walk about 70 meters to Guangzhou International Sports Performing Arts Center
8. I've used this machine of my colleagues. The image quality seems not as good as Sr1, but it's OK
the size of the sensor is 1 / 5.5 inch CCD, which is too small
60g hard disk, is it necessary to make it so large
as a new hard disk recording camera, the technology is not very mature, and there are still many problems, such as the problem of shockproof, the problem of hard disk virus...
although the price is still very attractive, I still think it is more reliable to buy a DV camera in one or two years
the domestic price of sr80 ranges from 6800 to 7200, without invoice
personally, I think sr60 is more cost-effective. 30g hard disk is enough. Sr60 is only about 5700 in China
well, let's see what you can do with this machine. For ordinary household use, 30g of storage space is enough. The recording format is MPEG2. It can record 440 minutes in HQ mode, 650 minutes in SP mode and 1250 minutes in LP mode. Isn't that enough? If you are traveling or scientific research for a long time, I suggest you buy 60g, so that the recording time will be doubled, you can shoot for a long time, and you don't have to import it to the computer frequently
image quality largely depends on the camera lens. Whether it is sr80 or sr60, 1 / 5.5-inch single-chip CCD is very common, and it is not the best t * lens in Zeiss lens. The imaging quality is only average, not as good as the Sony ads boast
Sr1 can support 1080i HD model, 1 / 3 "crystal clear vid CMOS sensor, Carl & Chen 8226; Zeiss vario sonnar t * lens, these are incomparable to SR series
although this Sr1 is sold at around 12000 in China, it's a bit high, but you should be aware of the development trend of the camera field. The era of high-definition has come. CCTV will open three sets of high-definition channels to report the 2008 Beijing Olympic Games
you can't buy a DV in one or two years. In the long run, I suggest you buy Sr1
since you are studying abroad and usually use the camera only for entertainment, there is no need to buy Sr1. Sr60 / 80 is enough
it's OK for camera enthusiast users to choose Sr1
the disadvantages of sr80 are also obvious. No matter how large the hard disk space is, it is limited. When the storage is nearly full, you must find a way to import the material to the computer, and the DV tape can be stored for a long time; In addition, aibvane also said that the hard disk has a certain life span. Once there is a problem with the hard disk, it is difficult to repair it; In addition, the minimum illumination is much higher than the nominal 7 lux, and the shooting effect is not good in dim light or at night
it also has the outstanding advantages of electronic anti shake function; In addition, hard disk storage saves money on DV tape
I checked the official specification sheet of Sony's machine. It is used normally and the operating temperature is 0 ° C to + 40 ° C. Storage temperature: - 20 ° C to + 60 ° C
it is recommended that you use the machine outdoors in bad weather as little as possible, or make a heat preservation cover for the machine to wrap it up, which can protect the machine from the cold to a certain extent.
the size of the sensor is 1 / 5.5 inch CCD, which is too small
60g hard disk, is it necessary to make it so large
as a new hard disk recording camera, the technology is not very mature, and there are still many problems, such as the problem of shockproof, the problem of hard disk virus...
although the price is still very attractive, I still think it is more reliable to buy a DV camera in one or two years
the domestic price of sr80 ranges from 6800 to 7200, without invoice
personally, I think sr60 is more cost-effective. 30g hard disk is enough. Sr60 is only about 5700 in China
well, let's see what you can do with this machine. For ordinary household use, 30g of storage space is enough. The recording format is MPEG2. It can record 440 minutes in HQ mode, 650 minutes in SP mode and 1250 minutes in LP mode. Isn't that enough? If you are traveling or scientific research for a long time, I suggest you buy 60g, so that the recording time will be doubled, you can shoot for a long time, and you don't have to import it to the computer frequently
image quality largely depends on the camera lens. Whether it is sr80 or sr60, 1 / 5.5-inch single-chip CCD is very common, and it is not the best t * lens in Zeiss lens. The imaging quality is only average, not as good as the Sony ads boast
Sr1 can support 1080i HD model, 1 / 3 "crystal clear vid CMOS sensor, Carl & Chen 8226; Zeiss vario sonnar t * lens, these are incomparable to SR series
although this Sr1 is sold at around 12000 in China, it's a bit high, but you should be aware of the development trend of the camera field. The era of high-definition has come. CCTV will open three sets of high-definition channels to report the 2008 Beijing Olympic Games
you can't buy a DV in one or two years. In the long run, I suggest you buy Sr1
since you are studying abroad and usually use the camera only for entertainment, there is no need to buy Sr1. Sr60 / 80 is enough
it's OK for camera enthusiast users to choose Sr1
the disadvantages of sr80 are also obvious. No matter how large the hard disk space is, it is limited. When the storage is nearly full, you must find a way to import the material to the computer, and the DV tape can be stored for a long time; In addition, aibvane also said that the hard disk has a certain life span. Once there is a problem with the hard disk, it is difficult to repair it; In addition, the minimum illumination is much higher than the nominal 7 lux, and the shooting effect is not good in dim light or at night
it also has the outstanding advantages of electronic anti shake function; In addition, hard disk storage saves money on DV tape
I checked the official specification sheet of Sony's machine. It is used normally and the operating temperature is 0 ° C to + 40 ° C. Storage temperature: - 20 ° C to + 60 ° C
it is recommended that you use the machine outdoors in bad weather as little as possible, or make a heat preservation cover for the machine to wrap it up, which can protect the machine from the cold to a certain extent.
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