Principle of blockchain traceability

1.

From the farm to the dining table, blockchain Traceability Technology is equivalent to buying a liability insurance for the proct

bathing crab and clenbuterol. In recent years, there have been food with white cubes (formaldehyde sodium bisulfite), poultry feeding hormone, flour with whitening agent, seafood soaked in formaldehyde, etc. in the market, there are more ripening agents and expanding agents sprayed on fruits, Spraying highly toxic pesticides on green vegetables makes people feel discolored. Food safety and health are becoming more and more important to us. Therefore, the blockchain Traceability Technology - a technology that can trace all agricultural procts from planting to selling has emerged

before making clear the Traceability Technology of blockchain, we should first make clear the difference between "traceability" and "traceability"

"traceability" includes logistics tracing and origin tracing. People often regard traceability and traceability as the same thing. In fact, what enterprises care about is tracing (don't lose the goods), and what consumers care about is tracing (whether the goods I bought are safe or not)
traceability is the most important feature of sanqingliangtian, which is a powerful means to ensure food safety. It starts from the source of planting, and controls the source, proction and processing, cleaning and disinfection, sub packaging, packaging, storage, transportation, sales, etc

in a word, to be exact, food traceability is a cost and an essential early investment, which is equivalent to purchasing a "liability insurance" for your proct. Maybe you can't see the effect in a year or two. When you really use it, it may be the straw to save your life

2. 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.

3. Traceability chain TAC has overcome the problem of cross chain digital asset transfer between traceability chain public chain and Ethereum public chain. After the main network goes online, cross chain digital asset transfer function will be launched one after another
in the future, the commodity traceability service instry will continue to develop in the direction of globalization and digitization, and more enterprises will certainly join this field and build corresponding traceability system based on their own needs
traceability chain applies blockchain technology to build public chain and realize cross chain interaction, which can be said to be forward-looking in strategic layout.

4. Blockchain can be traced. This technology is used in many fields. Many enterprises will use this technology to detect the source of goods, so that consumers can rest assured
the information in the blockchain can not be tampered, that is to say, the information recorded on the blockchain can be used to achieve the goal of traceability as long as the source is correct
in general, this technology is mostly used for commodity traceability, and the blockchain traceability technology can be understood in cryptography.

5. I was engaged in this instry in Shanghai before, and changed to another instry e to personal reasons. The blockchain technology itself has no traceability ability. It must use some other methods to obtain information and upload the information to the blockchain ledger to achieve the purpose of traceability. For specific operation methods, please refer to the official website of akte for more information. Thank you~~~

6. Chongqing jinwowo: the blockchain can not be tampered with and the data can be traced, which can effectively solve the problem of traceability and anti-counterfeiting of goods
blockchain technology can also trace and prevent counterfeiting of drugs, artworks, collectibles, luxury goods, etc.

7. Anti counterfeiting traceability through the traditional two-dimensional code technology has been able to solve the problem, the pain is that the anti-counterfeiting data stored in the central structure, easy to tamper with, credibility is not strong. It happens that the characteristics of blockchain are very consistent with anti-counterfeiting traceability. Let's review the four characteristics of blockchain application
four characteristics of blockchain application:
first, decentralization: blockchain consists of many nodes to form an end-to-end network, and there is no centralized equipment and management organization
Second, tamper proof: the modification of the database by a single node or even multiple nodes cannot affect the database of other nodes, unless more than 51% of the nodes in the whole network can be controlled to modify at the same time, which is almost impossible
Third, transaction transparency: the operation rules of the blockchain are open and transparent, and all the data information is also open, Each transaction is visible to all nodes
4. Traceability: each transaction in the blockchain is connected with two adjacent blocks by password method, so it can trace back to the origin and development of any transaction.

8. 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

9. Except for the minimum transaction amount