CN111626752A - E-commerce product information tracing method and system based on block chain and Internet of things coupling - Google Patents
E-commerce product information tracing method and system based on block chain and Internet of things coupling Download PDFInfo
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Abstract
The invention discloses an e-commerce product information tracing method based on block chain and internet of things coupling, and aims to solve the problem that authenticity of cross-border e-commerce products is difficult to trace. The method comprises the following steps: the production information of the product is identified to generate a corresponding first identification code, the production information and the first identification code are written into a production node, and the first identification code is written into a first electronic tag; identifying the distribution information of the product to generate a corresponding second identification code, writing the distribution information and the second identification code into a distribution node, and writing the second identification code into a second electronic tag; identifying and reading the product, and inquiring production information and distribution information of the product stored in the blockchain according to the first identification code and the second identification code to complete customs inspection clearance; and after the clearance is finished, recording clearance information, identifying the clearance information to generate a corresponding third identification code, writing the clearance information into the supervision node, and writing the third identification code into the second electronic tag.
Description
Technical Field
The invention relates to the technical field of information tracing, in particular to an e-commerce product information tracing method based on block chain and internet of things coupling.
Background
With the continuous and deep promotion of the development strategy of 'Internet +', the retail import and export headquarters of cross-border electric merchants in China are continuously increased, and the rapid increase is followed by the generation of a series of product information tracing problems. The main problems of cross-border electronic commerce are as follows: selling false goods, returning goods and changing goods difficultly, having serious credit problem and information security problem, etc. The main root of the above problem is that the cross-border e-commerce product information tracing problem is difficult to solve.
At present, the mainstream product information tracing technology in the market is technologies such as two-dimensional code identification, barcode technology and NFC, and the core of the technologies lies in ensuring the integrity of the tracing information, the high efficiency and accuracy of data acquisition and the feasibility of data acquisition, and can realize the rapid and accurate acquisition of data.
The existing product information tracing basically adopts one object and one code to mark a product, and the product can be traced through two-dimensional codes, bar codes or NFC and the like from production and manufacturing to circulation and sale. However, since the production, circulation and sale of the cross-border e-commerce product are performed between different countries, the production, circulation and sale links of the cross-border e-commerce product cannot be well linked, so that the non-issuing merchant can make a fake in the production, circulation and sale links of the cross-border e-commerce product, and further, the consumer cannot judge the authenticity of the purchased product.
Disclosure of Invention
Aiming at the problems in the prior art, the invention mainly aims to provide an e-commerce product information tracing method based on block chain and internet of things coupling, and aims to solve the problem that the authenticity of cross-border e-commerce products is difficult to trace.
In order to achieve the above object, in a first aspect, the present invention provides an e-commerce product information tracing method based on block chain and internet of things coupling, which includes the following steps:
s1, providing a first electronic tag and a second electronic tag with a plurality of memory blocks, wherein the first electronic tag and the second electronic tag are associated with each other;
s2, identifying production information of the product to generate a unique corresponding first identification code, writing the production information and the first identification code into a production node of a block chain, simultaneously writing the first identification code into a first storage area of a first electronic tag, and placing the first electronic tag in a package of the product;
s3, identifying the distribution information of the product to generate a unique corresponding second identification code, writing the distribution information and the second identification code into a distribution node of the blockchain, and simultaneously writing the second identification code into a first storage area of a second electronic tag;
s4, recognizing and reading the first identification code in the first electronic tag and the second identification code in the second electronic tag, inquiring production information and distribution information of products stored in the block chain according to the first identification code and the second identification code, and completing customs inspection clearance;
and S5, after the clearance is finished, recording the clearance information, identifying the clearance information to generate a unique corresponding third identification code, writing the clearance information into the supervision node of the block chain, and simultaneously writing the third identification code into a third storage area of the second electronic tag.
Optionally, the method further comprises:
and S6, reading the second identification code and the third identification code from the second electronic tag, inquiring and reading the production information, the distribution information and the customs information of the product from the block chain node according to the second identification code and the third identification code, and tracing the product information.
Optionally, in step S2, when the production information and the first identification code are written into the production node of the blockchain, the production information is packaged to generate a first data packet and uploaded to the tracing server, and a first verification code corresponding to the first data packet is generated and written into the second storage area of the first electronic tag.
Optionally, in step S3, when the distribution information and the second identification code are written into the distribution node of the blockchain, the first data packet is queried and read from the traceability server through the first check code, the first data packet and the distribution information are packaged to generate a second data packet, the second data packet is uploaded to the traceability server, and a second check code corresponding to the second data packet is generated and written into the second storage area of the second electronic tag.
Optionally, in step S5, when the clearance information is written into the supervisory node of the block chain, the second data packet is queried and read from the tracing server through the second check code, and the second data packet and the clearance information are packaged to generate a third data packet, the third data packet is uploaded to the tracing server, and a third check code corresponding to the third data packet is generated and written into the fourth storage area of the second electronic tag.
Optionally, in step S6, the method further includes:
the first identification code and the first check code are identified and read from the first electronic tag, the production information of the product is inquired from the block chain link point through the first identification code, the first data packet is inquired from the tracing server through the first check code, and the consistency check is carried out on the production information in the first data packet and the production information stored in the block chain link point.
Optionally, in step S6, the method further includes:
and identifying and reading the second identification code and the second check code from the second electronic tag, inquiring the distribution information of the product from the blockchain node through the second identification code, inquiring the second data packet from the traceability server through the second check code, and checking the consistency of the distribution information in the second data packet and the distribution information stored in the blockchain node.
Optionally, in step S6, the method further includes:
and identifying and reading a third identification code and a third check code from the second electronic tag, inquiring clearance information of a product from the block chain node through the third identification code, inquiring a third data packet from the tracing server through the third check code, and checking consistency of the clearance information in the third data packet and the clearance information stored in the block chain node.
Optionally, the method further comprises:
s7, the product is uploaded to a source tracing server through logistics information circulated to the hands of the consumer after passing through customs, the logistics information is identified to generate a fourth identification code, and the fourth identification code is written into a fifth storage area of the second electronic tag.
In a second aspect, the present invention further provides an e-commerce product information tracing system based on block chain and internet of things coupling, which includes:
the first uplink module is used for identifying production information of a product to generate a unique corresponding first identification code, writing the production information and the first identification code into a production node of the block chain, and simultaneously writing the first identification code into a first storage area of the first electronic tag;
the second uplink module is used for identifying the distribution information of the product to generate a unique corresponding second identification code, writing the distribution information and the second identification code into a distribution node of the block chain, and simultaneously writing the second identification code into a first storage area of a second electronic tag;
the clearance checking module is used for identifying and reading a first identification code in the first electronic tag and a second identification code in the second electronic tag, and inquiring production information and distribution information of products stored in the block chain according to the first identification code and the second identification code;
and the third uplink module is used for recording the clearance information, identifying the clearance information to generate a unique corresponding third identification code, writing the clearance information into the supervision node of the block chain, and simultaneously writing the third identification code into a third storage area of the second electronic tag.
According to the technical scheme, the production information, the distribution information and the customs information of the cross-border e-commerce product are identified by adopting the two electronic tags, the production information of the product is associated with the first electronic tag, the first electronic tag and the product are packaged in the package of the product, the distribution information and the customs information of the product are associated with the second electronic tag, and the production or circulation link of the product is prevented from being broken. By encrypting and chaining the production information, the distribution information and the clearance information, after login authentication is completed, all main bodies on the block chain can trace back the information of the product in different links through the electronic tag. The information stored in the block chain has the characteristic of being not falsifiable, the authenticity of the information can be guaranteed, the credibility is high, and a consumer can conveniently distinguish the authenticity of the product.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart of an embodiment of an e-commerce product information tracing method based on block chain and internet of things coupling according to the present invention;
fig. 2 is a schematic flowchart of another embodiment of the method for tracing the information of the e-commerce product based on the coupling of the block chain and the internet of things according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of an e-commerce product information tracing system based on block chain and internet of things coupling according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a first embodiment, as shown in fig. 1, the method for tracing the information of the e-commerce product based on the coupling of the block chain and the internet of things provided by the present invention includes the following steps:
s1, providing a first electronic tag having a plurality of memory blocks, wherein the first electronic tag may be an NFC or RFID tag.
S2, identifying the production information of the product to generate a unique corresponding first identification code, writing the production information and the first identification code into the production node of the block chain, simultaneously writing the first identification code into the first storage area of the first electronic tag, and placing the first electronic tag in the package of the product.
The production information comprises raw material information, manufacturer information, processing process information, quality inspection certificate information and ex-warehouse information, and the raw material information comprises supplier information, production place information, production time information, inspection information and first logistics information of raw materials which are distributed to manufacturers from supply.
When a product is in a production environment of spot check, warehousing or ex-warehouse and the like, related workers can read the first identification code of the first electronic tag through the read-write equipment which is completely logged in for authentication, and send a query request to the production node of the block chain by taking the first identification code as the query request, and when the production node receives the query request, the production information related to the first identification code is returned to the read equipment, so that the related workers can trace the product with problems.
In step S1, when the product is packaged, the first electronic tag is attached to the upper side wall, the lower side wall, or the peripheral side wall of the packaging box, so that the first electronic tag is read in a subsequent step. Moreover, the first electronic tag is placed in the package of the product, so that the tag can be effectively prevented from being replaced or damaged, and the first electronic tag is ensured not to be changed. In addition, in order to facilitate the search of the label position, a prompt mark is arranged at the position, corresponding to the first electronic label, outside the packaging box, so that the convenience of reading label information is improved.
And S3, providing a second electronic tag, associating the second electronic tag with the first electronic tag, and writing the association information into the distribution node of the blockchain. And identifying the distribution information of the product to generate a unique corresponding second identification code, writing the distribution information and the second identification code into the distribution node of the blockchain, and simultaneously writing the second identification code into the first storage area of the second electronic tag.
Wherein the distribution information includes distributor information, retailer information, order information, second logistics information for the product to circulate from the distributor to the retailer, and third logistics information for the product to circulate from the retailer to the home gateway.
When a distributor or a retailer checks and accepts a product, login authentication needs to be completed firstly, then the first identification code of the first electronic tag can be read through authenticated reading equipment, the first identification code is used as an inquiry request to send the inquiry request to a production node of a block chain, and when the production node receives the inquiry request, production information related to the first identification code is returned to the reading equipment, so that the production information of the product is traced, and relevant checking and accepting work is completed.
And S4, recognizing and reading the first identification code in the first electronic tag and the second identification code in the second electronic tag, inquiring the production information and the distribution information of the products stored in the block chain according to the first identification code and the second identification code, and completing customs inspection clearance.
When the product circulates to customs, customs personnel can read the first identification code in the first electronic tag and the second identification code in the second electronic tag through a reading device for login authentication, and trace the production information and the distribution information of the cross-border e-commerce product, thereby discriminating cross-border goods and ensuring high-quality safety exit and entry of the cross-border e-commerce product.
Because the first electronic tag and the second electronic tag are mutually associated, customs personnel can only read the second identification code in the second electronic tag, and the system automatically searches the first identification code in the first electronic tag associated with the second electronic tag according to the associated information, thereby simplifying the reading operation process and accelerating the clearance efficiency.
And S5, after the clearance is finished, recording the clearance information, identifying the clearance information to generate a unique corresponding third identification code, writing the clearance information into the supervision node of the block chain, and simultaneously writing the third identification code into a third storage area of the second electronic tag.
In step S5, when the first gateway passes through the first gateway, the information of the first gateway is identified and a uniquely corresponding third identification code is generated, and then, each time a gateway passes through the first gateway, the gateway information of the subsequent gateway is associated with the third identification code and is simultaneously written into the supervision node of the blockchain, and the customs officer of the subsequent gateway can check the previous gateway information by reading the third identification code on the second electronic tag.
And S6, reading the second identification code and the third identification code from the second electronic tag, inquiring and reading the production information, the distribution information and the customs information of the product from the block chain node according to the second identification code and the third identification code, and tracing the product information.
When the product circulates to the consumer, the consumer can read the second identification code and the third identification code in the second electronic tag through the terminal equipment which is logged in for authentication, then, the distribution information and the customs information of the product in the blockchain node are inquired according to the second identification code and the second identification code, and the circulation process and the source of the product are traced. And reading the first identification code in the first electronic tag, and inquiring production information in the production node according to the first identification code, thereby determining the authenticity of the product by combining distribution information and clearance information of the product.
According to the technical scheme, the production information, the distribution information and the customs information of the cross-border e-commerce product are identified by adopting the two electronic tags, the production information of the product is associated with the first electronic tag, the first electronic tag and the product are packaged in the package of the product, the distribution information and the customs information of the product are associated with the second electronic tag, and the production or circulation link of the product is prevented from being broken. By encrypting and chaining the production information, the distribution information and the clearance information, after login authentication is completed, all main bodies on the block chain can trace back the information of the product in different links through the electronic tag. The information stored in the block chain has the characteristic of being not falsifiable, the authenticity of the information can be guaranteed, the credibility is high, and a consumer can conveniently distinguish the authenticity of the product.
In a second embodiment, on the basis of the first embodiment, in step S2, when the production information and the first identification code are written into the production node of the block chain, the production information is packaged to generate a first data packet and uploaded to the tracing server, and a first verification code corresponding to the first data packet is generated and written into the second storage area of the first electronic tag.
And when the production information is encrypted and written into the block chain, packaging and uploading the unencrypted production information to the tracing server. For frequent access operation, the reading device reads the number of times of reading the first electronic tag within a certain time, when the number of times reaches a set threshold value, the first check code in the first electronic tag is read, the first check code is used as a query request to query the tracing server, and the tracing server returns production information to the reading device instead of the production node, so that the data processing amount of the production node of the block chain is reduced.
Preferably, after the reading device reads the first identification code and the first check code from the first electronic tag, the production information of the product is inquired from the block link point through the first identification code, the first data packet is inquired from the traceability server through the first check code, the block link point returns the stored production information to the traceability server, and the traceability server checks the consistency of the production information in the first data packet and the production information stored in the block link point.
And if the inspection is passed, the tracing server returns the first data packet to the reading equipment, and the reading equipment decompresses and reads the production information.
And if the inspection does not pass, generating result information that the inspection does not pass by the traceability server to the reading device.
By carrying out consistency checking, the unencrypted information in the tracing server is prevented from being changed, and the authenticity of the production information returned to the reading device is ensured.
The data transmission capacity between the traceability server and the block chain link points is large, the output efficiency is high, compared with the situation that the production node directly returns data to the reading equipment, the pressure for returning the data to the traceability server is lower, therefore, after the production node returns the production information to the traceability server for consistency check, the traceability server returns the production information to the reading equipment after verification, compared with the situation that the production node directly returns the production information to the reading equipment, the pressure on the production node is lower, and the authenticity of the production information can also be ensured.
In a third embodiment, on the basis of the second embodiment, in step S3, when the distribution information and the second identification code are written into the distribution node of the blockchain, the first data packet is queried and read from the tracing server through the first ping, the first data packet and the distribution information are packaged to generate a second data packet, the second data packet is uploaded to the tracing server, and a second ping corresponding to the second data packet is generated and written into the second storage area of the second electronic tag.
And recognizing and reading the second identification code and the second check code from the second electronic tag through the reading device, inquiring the distribution information of the product from the blockchain node through the second identification code, inquiring the second data packet from the traceability server through the second check code, and checking the consistency of the distribution information in the second data packet and the distribution information stored in the blockchain node.
Therefore, the data processing amount of the distribution node can be reduced, and the authenticity of the data returned to the reading device can be ensured. The specific principle is the same as that described in the second embodiment, and is not repeated herein.
In a fourth embodiment, on the basis of the third embodiment, in step S5, when the clearance information is written into the supervisory node of the block chain, the second packet is queried and read from the tracing server through the second check code, and the second packet and the clearance information are packaged to generate a third packet, and the third packet is uploaded to the tracing server, so as to generate a third check code corresponding to the third packet and write the third check code into the fourth storage area of the second electronic tag.
And recognizing and reading the second identification code and the second check code from the second electronic tag through the reading device, inquiring the distribution information of the product from the blockchain node through the second identification code, inquiring the second data packet from the traceability server through the second check code, and checking the consistency of the distribution information in the second data packet and the distribution information stored in the blockchain node.
Therefore, the data processing amount of the production node, the distribution node and the supervision node in the block chain can be reduced, and the authenticity of the data returned to the reading equipment can be ensured. The principle is the same as that described in the second embodiment, and is not repeated herein.
Fifth embodiment, on the basis of any of the above embodiments, as shown in fig. 2, the method further includes:
s7, the product is uploaded to a source tracing server through logistics information circulated to the hands of the consumer after passing through customs, the logistics information is identified to generate a fourth identification code, and the fourth identification code is written into a fifth storage area of the second electronic tag.
After the product is circulated to a destination country through each customs, the product amount distribution process can be monitored in real time through a logistics inquiry system provided by a logistics company of the country. In order to improve the convenience of the terminal consumer for querying the complete information of the product, the logistics information is written into the tracing server, the logistics information is identified to generate a fourth identification code, and the fourth identification code is written into a fifth storage area of the second electronic tag. Therefore, the user can determine the circulation information of the purchased product in the country by directly reading the information on the second electronic tag, does not need to perform single query through the express bill number provided by the logistics in the country again, can determine all information of the purchased product from production, distribution, customs to domestic distribution once through the first electronic tag and the second electronic tag, and traces all information of the product.
Sixth embodiment, based on the same idea as the first embodiment, as shown in fig. 3, an embodiment of the present invention further provides an e-commerce product information tracing system based on block chain and internet of things coupling, which includes a first uplink module 100, a second uplink module 200, a customs verification module 300, and a third uplink module 400.
The first uplink module 100 is configured to identify production information of a product to generate a unique corresponding first identification code, write the production information and the first identification code into a production node of the block chain, and write the first identification code into a first storage area of the first electronic tag.
And the second uplink module 200 is used for identifying the distribution information of the product to generate a unique corresponding second identification code, writing the distribution information and the second identification code into a distribution node of the blockchain, and simultaneously writing the second identification code into the first storage area of the second electronic tag.
The clearance check module 300 is used for reading a first identification code in the first electronic tag and a second identification code in the second electronic tag, and inquiring the production information and the distribution information of the products stored in the blockchain according to the first identification code and the second identification code.
The third uplink module 400 is configured to record clearance information and identify the clearance information to generate a unique corresponding third identification code, write the clearance information into a supervision node of the block chain, and write the third identification code into a third storage area of the second electronic tag.
After the login authentication is completed, all the participating main bodies on the block chain can read the identification codes in the first electronic tag and the second electronic tag through the terminal equipment which completes the login authentication, and the information written in the product in different links is inquired for all the nodes of the block chain according to the identification codes, so that the product information of the product in different links is traced.
For the consumer as one of the participating subjects, it is also possible to inquire about production information, distribution information, and customs information of the product through the authenticated device, thereby discriminating the authenticity of the product.
According to the technical scheme, the production information, the distribution information and the customs information of the cross-border e-commerce product are identified by adopting the two electronic tags, the production information of the product is associated with the first electronic tag, the first electronic tag and the product are packaged in the package of the product, the distribution information and the customs information of the product are associated with the second electronic tag, and the production or circulation link of the product is prevented from being broken. By encrypting and chaining the production information, the distribution information and the clearance information, after login authentication is completed, all main bodies on the block chain can trace back the information of the product in different links through the electronic tag. The information stored in the block chain has the characteristic of being not falsifiable, the authenticity of the information can be guaranteed, the credibility is high, and a consumer can conveniently distinguish the authenticity of the product.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An E-commerce product information tracing method based on block chain and Internet of things coupling is characterized by comprising the following steps:
s1, providing a first electronic tag and a second electronic tag with a plurality of memory blocks, wherein the first electronic tag and the second electronic tag are associated with each other;
s2, identifying production information of the product to generate a unique corresponding first identification code, writing the production information and the first identification code into a production node of a block chain, simultaneously writing the first identification code into a first storage area of a first electronic tag, and placing the first electronic tag in a package of the product;
s3, identifying the distribution information of the product to generate a unique corresponding second identification code, writing the distribution information and the second identification code into a distribution node of the blockchain, and simultaneously writing the second identification code into a first storage area of a second electronic tag;
s4, recognizing and reading the first identification code in the first electronic tag and the second identification code in the second electronic tag, inquiring production information and distribution information of products stored in the block chain according to the first identification code and the second identification code, and completing customs inspection clearance;
and S5, after the clearance is finished, recording the clearance information, identifying the clearance information to generate a unique corresponding third identification code, writing the clearance information into the supervision node of the block chain, and simultaneously writing the third identification code into a third storage area of the second electronic tag.
2. The block chain and internet of things coupling based e-commerce product information tracing method of claim 1, further comprising:
and S6, reading the second identification code and the third identification code from the second electronic tag, inquiring and reading the production information, the distribution information and the customs information of the product from the block chain node according to the second identification code and the third identification code, and tracing the product information.
3. The method for tracing the information of the e-commerce product based on the coupling of the block chain and the internet of things according to claim 2, wherein in step S2, when the production information and the first identification code are written into the production node of the block chain, the production information is packaged to generate a first data packet and uploaded to the tracing server, and a first check code corresponding to the first data packet is generated and written into the second storage area of the first electronic tag.
4. The method for tracing the information of the e-commerce product based on the coupling of the blockchain and the internet of things according to claim 3, wherein in step S3, when the distribution information and the second identification code are written into the distribution node of the blockchain, the first data packet is queried and read from the traceability server through the first ping, the first data packet and the distribution information are packaged to generate a second data packet, the second data packet is uploaded to the traceability server, and a second ping corresponding to the second data packet is generated and written into the second storage area of the second electronic tag.
5. The E-commerce product information tracing method based on block chain and Internet of things coupling as claimed in claim 4, wherein when the clearance information is written into the supervision node of the block chain, the second data packet is queried and read from the tracing server through the second check code, the second data packet and the clearance information are packaged to generate a third data packet, the third data packet is uploaded to the tracing server, and a third check code corresponding to the third data packet is generated and written into a fourth storage area of the second electronic tag.
6. The method for tracing the information of the e-commerce product based on the coupling of the block chain and the internet of things according to claim 5, wherein in step S6, the method further comprises:
the first identification code and the first check code are identified and read from the first electronic tag, the production information of the product is inquired from the block chain link point through the first identification code, the first data packet is inquired from the tracing server through the first check code, and the consistency check is carried out on the production information in the first data packet and the production information stored in the block chain link point.
7. The method for tracing the information of the e-commerce product based on the coupling of the block chain and the internet of things according to claim 5, wherein in step S6, the method further comprises:
and identifying and reading the second identification code and the second check code from the second electronic tag, inquiring the distribution information of the product from the blockchain node through the second identification code, inquiring the second data packet from the traceability server through the second check code, and checking the consistency of the distribution information in the second data packet and the distribution information stored in the blockchain node.
8. The method for tracing the information of the e-commerce product based on the coupling of the block chain and the internet of things according to claim 5, wherein in step S6, the method further comprises:
and identifying and reading a third identification code and a third check code from the second electronic tag, inquiring clearance information of a product from the block chain node through the third identification code, inquiring a third data packet from the tracing server through the third check code, and checking consistency of the clearance information in the third data packet and the clearance information stored in the block chain node.
9. The method for tracing the information of the e-commerce product based on the coupling of the block chain and the internet of things according to any one of claims 2 to 8, further comprising:
s7, the product is uploaded to a source tracing server through logistics information circulated to the hands of the consumer after passing through customs, the logistics information is identified to generate a fourth identification code, and the fourth identification code is written into a fifth storage area of the second electronic tag.
10. An E-commerce product information tracing method based on block chain and Internet of things coupling is characterized by comprising the following steps:
the first uplink module is used for identifying production information of a product to generate a unique corresponding first identification code, writing the production information and the first identification code into a production node of the block chain, and simultaneously writing the first identification code into a first storage area of the first electronic tag;
the second uplink module is used for identifying the distribution information of the product to generate a unique corresponding second identification code, writing the distribution information and the second identification code into a distribution node of the block chain, and simultaneously writing the second identification code into a first storage area of a second electronic tag;
the clearance checking module is used for identifying and reading a first identification code in the first electronic tag and a second identification code in the second electronic tag, and inquiring production information and distribution information of products stored in the block chain according to the first identification code and the second identification code;
and the third uplink module is used for recording the clearance information, identifying the clearance information to generate a unique corresponding third identification code, writing the clearance information into the supervision node of the block chain, and simultaneously writing the third identification code into a third storage area of the second electronic tag.
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