CN110990888A - Block chain-based second-hand transaction platform evaluation method, equipment and medium - Google Patents
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Abstract
The application discloses a block chain-based second-hand transaction platform evaluation method, equipment and a medium, wherein the method comprises the following steps: deploying a blockchain platform based on the blockchain framework; taking buyers and sellers in the second-hand transaction platform as nodes and deploying the nodes in the blockchain platform; after the transaction between the buyer and the seller is finished, receiving a first credit evaluation value of the buyer to the seller in the transaction process; determining a second credit evaluation value of the seller in the transaction process according to the first credit evaluation value and the destruction value of the buyer in the currency in the transaction process; and writing the first credit evaluation value, the currency day destruction value and the second credit evaluation value into the block chain platform. Because the blockchain platform is in distributed storage, data tampering of a single node cannot be effective, and the trueness and the credibility of the data on the blockchain platform are ensured. And due to the arrangement of the destruction value of the currency day, when the buyer evaluates, if the buyer swipes bad comments, the influence on the seller is low, and the negative influence of malicious misclassification on the seller is reduced.
Description
Technical Field
The application relates to the field of second-hand transaction, in particular to a second-hand transaction platform evaluation method, equipment and medium based on a block chain.
Background
In daily life, people often have some articles which are not wanted or can not be used for various objective reasons, and if the articles are directly discarded, the articles are quite wasted, so that the articles can be sold to other users on a second-hand trading platform.
However, in the prior art, the second-hand transaction still has some problems. For example, second-hand transactions are more prone to quality problems than commodity transactions. Thus, the evaluation of the buyer tends to have a greater impact on the seller during a second-hand transaction than a merchandise transaction. This makes the seller more susceptible to the negative impact of some malicious, misrated buyers.
Disclosure of Invention
In order to solve the above problem, the present application provides a second-hand transaction platform evaluation method based on a blockchain, including: deploying a blockchain platform based on the blockchain framework; taking buyers and sellers in a second-hand transaction platform as nodes and deploying the nodes in the blockchain platform; after the transaction between the buyer and the seller is finished, receiving a first credit evaluation value of the buyer to the seller in the transaction process; determining a second credit evaluation value of the seller in the transaction process according to the first credit evaluation value and the destruction value of the buyer in the currency day in the transaction process; and writing the first credit evaluation value, the currency day destruction value and the second credit evaluation value into the block chain platform.
In one example, the method further comprises: and generating a corresponding intelligent contract and deploying the intelligent contract in the blockchain platform, wherein the intelligent contract comprises the first credit evaluation value, the amount of the currency in the transaction process and the time length of the currency held by the buyer.
In one example, the intelligent contract is for: and multiplying the currency number by the time length to obtain the currency day destruction value, determining the second credit evaluation value according to the first credit evaluation value and the currency day destruction value, and writing the second credit evaluation value into the block chain platform.
In one example, before the transaction is ended, the method further comprises: determining historical transaction records and/or suspected historical transaction records of the seller in the blockchain platform, wherein the suspected historical transaction records refer to that, for each historical transaction record in the blockchain platform, if at least one of an IP address, an equipment MAC address, a router MAC address and a browser cookie record of the seller corresponding to the historical transaction record is the same as that of the seller in the transaction, the suspected historical transaction record is used as the suspected historical transaction record of the seller; and if an abnormal transaction record exists in the historical transaction record and/or the suspected historical transaction record of the seller, sending a prompt to the buyer.
In one example, before the transaction is ended, the method further comprises: acquiring commodity information of a second-hand commodity sold by the seller, and writing the commodity information into the block chain platform, wherein the commodity information comprises a service life; determining a commodity index according to the service life and the time of delivery of the seller in the transaction process, wherein the commodity index is higher when the delivery time is closer to the service life; after determining the second credit evaluation value of the seller in the transaction process, the method further comprises: determining a third credit evaluation value according to the commodity index and the second credit evaluation value; writing the third credit evaluation value into the blockchain platform.
In one example, the method further comprises: deploying logistics companies as nodes in the blockchain platform; the logistics company writes the signing information of the buyer signing commodity into the block chain platform; and transferring the payment paid by the buyer into the account of the seller.
In one example, the method further comprises: deploying a detection mechanism as a node in the blockchain platform; acquiring commodity description of a second-hand commodity sold by the seller, and writing the commodity description into the block chain platform, wherein the commodity description comprises at least one of pictures and videos; and the detection mechanism writes a detection result of whether the pictures and the videos are subjected to violation processing into the block chain platform.
In one example, receiving a first credit evaluation value of the buyer to the seller in the transaction process includes: receiving a first credit evaluation value of the buyer to the seller in the transaction process and an evaluation description of the buyer, wherein the evaluation description comprises at least one of a text description, a picture description and a video description.
On the other hand, the application also provides second-hand transaction platform evaluation equipment based on the block chain, which comprises the following steps: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to: deploying a blockchain platform based on the blockchain framework; taking buyers and sellers in a second-hand transaction platform as nodes and deploying the nodes in the blockchain platform; after the transaction between the buyer and the seller is finished, receiving a first credit evaluation value of the buyer to the seller in the transaction process; determining a second credit evaluation value of the seller in the transaction process according to the first credit evaluation value and the destruction value of the buyer in the currency day in the transaction process; and writing the first credit evaluation value, the currency day destruction value and the second credit evaluation value into the block chain platform.
In another aspect, the present application further provides a non-volatile computer storage medium for evaluation of a second-hand transaction platform based on a blockchain, where the non-volatile computer storage medium stores computer-executable instructions configured to: deploying a blockchain platform based on the blockchain framework; taking buyers and sellers in a second-hand transaction platform as nodes and deploying the nodes in the blockchain platform; after the transaction between the buyer and the seller is finished, receiving a first credit evaluation value of the buyer to the seller in the transaction process; determining a second credit evaluation value of the seller in the transaction process according to the first credit evaluation value and the destruction value of the buyer in the currency day in the transaction process; and writing the first credit evaluation value, the currency day destruction value and the second credit evaluation value into the block chain platform.
The evaluation method of the second-hand transaction platform based on the block chain can bring the following beneficial effects:
because the blockchain platform is in distributed storage, data tampering of a single node cannot be effective, and the truthfulness and the credibility of the data on the blockchain platform are ensured. And due to the arrangement of the destruction value of the currency day, when the buyer evaluates, if the buyer reviews the bad comments by purchasing the low-price commodities continuously, the influence on the seller is low substantially, and the negative influence on the seller caused by malicious review of the bad comments is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic flowchart of a second-hand transaction platform evaluation method based on a blockchain in an embodiment of the present application;
fig. 2 is a schematic diagram of a used-hand transaction platform evaluation device based on a blockchain in the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, 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 application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present application provides a second-hand transaction platform evaluation method based on a blockchain, including:
s101, deploying a blockchain platform based on the blockchain framework.
The Blockchain (Blockchain) is a novel application mode of computer technologies such as distributed data storage, point-to-point transmission, a consensus mechanism, an encryption algorithm and the like, and is essentially a decentralized database.
A blockchain platform is first deployed based on the blockchain framework. The blockchain frame may be any blockchain frame capable of implementing the corresponding function of the embodiment of the present application, for example, bitcoin, etherhouse, Fabric, Corda, and the like. A blockchain platform may refer to a platform that stores a blockchain, e.g., may be a distributed system, etc. Of course, the blockchain platform may also directly represent the blockchain itself, and is not limited herein.
And S102, taking the buyers and the sellers in the second-hand transaction platform as nodes and deploying the nodes in the blockchain platform.
When a person conducts a transaction from a second-hand transaction platform, there will be at least the identity of the buyer and seller. Thus, buyers and sellers can be deployed as nodes in a blockchain platform. However, it should be noted that one node may serve as the identity of the buyer in the transaction process, but may also serve as the identity of the seller in another transaction process, which is not described herein.
S103, after the transaction between the buyer and the seller is finished, receiving a first credit evaluation value of the buyer to the seller in the transaction process.
After the buyer and the seller reach a consensus on a second-hand commodity, the buyer can perform the transaction by performing corresponding actions. After the current transaction of the buyer and the seller is finished, the buyer can evaluate the current transaction process, and the evaluation mode can be to submit a credit evaluation value, which is called a first credit evaluation value for convenience of description. Here, the term "transaction completion" generally means that the buyer signs the commodity and then completes the transaction. The first credit evaluation value refers to the degree of satisfaction of the buyer with the seller and the second-hand commodity, and generally, the higher the first credit evaluation value is, the more satisfactory the buyer is with the seller and the second-hand commodity.
Of course, in addition to the first credit rating, the buyer may also send a rating description and write to the blockchain platform. The evaluation description includes at least one of a text description, a picture description, and a video description, which is not repeated herein.
And S104, determining a second credit evaluation value of the seller in the transaction process according to the first credit evaluation value and the destruction value of the buyer in the currency day in the transaction process.
And S105, writing the first credit evaluation value, the currency day destruction value and the second credit evaluation value into the block chain platform.
After the first credit evaluation value evaluated by the buyer, a second credit evaluation value corresponding to the seller can be determined according to the first credit evaluation value and the currency destruction value in the transaction process of the buyer.
Specifically, the age of a currency refers to the product of the currency held by a buyer (here, it refers to virtual currency, which is explained in the following embodiments by taking virtual currency as an example) and the time duration for holding the virtual currency (explained in the following embodiments by taking days as an example). For example, if the amount of money held by the buyer is 10 and the holding time is 5 days, the age of the 10 money of the buyer is 50. The currency day destruction value refers to the value of the currency age destroyed by the buyer in the transaction process. For example, if the buyer spends 5 virtual currencies in the transaction, wherein the currency age corresponding to 2 virtual currencies is 20, and the currency age corresponding to the other 3 virtual currencies is 15, the currency day destruction value of the buyer in the transaction is 35.
When the second credit evaluation value is determined from the first credit evaluation value and the medal day destruction value, various manners may be adopted, such as taking the product of the first credit evaluation value and the medal day destruction value as the second credit evaluation value. When the second credit evaluation value is determined, the first credit evaluation value, the dollar day destruction value, and the second credit evaluation value may all be written to the blockchain platform. Because the blockchain platform is in distributed storage, data tampering of a single node cannot be effective, and the truthfulness and the credibility of the data on the blockchain platform are ensured. And due to the arrangement of the destruction value of the currency day, when the buyer evaluates, if the buyer reviews the bad comments by purchasing the low-price commodities continuously, the influence on the seller is low substantially, and the negative influence on the seller caused by malicious review of the bad comments is reduced.
In one embodiment, the corresponding intelligent contracts may also be generated in advance and deployed in the blockchain platform. The smart contract includes a first credit rating value, an amount of currency during the transaction, and a length of time the buyer holds the currency. The intelligent contract is used for calculating a currency day destruction value according to the currency number and the duration, and calculating a second credit evaluation value according to the currency day destruction value and the first credit evaluation value. Since the intelligent contracts on the blockchain platform are public, each node can check whether the intelligent contracts are in accordance with the preset agreement or not and deploy the intelligent contracts on the own node. The degree of trust of the buyer and the seller is further increased while the degree of transaction automation is improved. The intelligent contract can only be changed in an upgrading mode, each node needs to be synchronously deployed, once the intelligent contract is deployed, the intelligent contract can only be executed through a program, interference of human factors is avoided, and the reliability of data is enhanced.
In one embodiment, before the transaction is completed, the historical transaction record and/or suspected historical transaction record of the seller on the blockchain platform may be determined, and if an abnormal transaction record exists therein, it indicates that there may be a problem with the goods sold by the seller, and a prompt may be sent to the buyer. Wherein the anomalous transaction record may include: records with very low second credit rating account a large percentage of the total records, have too many transactions with an abnormal account, have a large difference between the actual value of the goods sold, etc. The prompting mode can be that information is sent to the account of the user, or information is sent to the registered mobile phone number, and the like.
Specifically, the suspected historical transaction record refers to that although the historical transaction record is not on the account of the seller, at least one of the IP address, the device MAC address, the router MAC address and the browser cookie record of the seller of the historical transaction record at the time of transaction is the same as that of the seller of the transaction, which indicates that the historical transaction record is probably sold by the seller and can be regarded as the suspected historical transaction record.
In one embodiment, the product index may also be determined based on the age of the second-hand goods sold by the seller in the goods information and the time of shipment by the seller before the transaction is completed. Wherein the closer the time of delivery is to the life span, the higher the product index. After the second credit evaluation value is determined, a third credit evaluation value can be determined according to the second credit evaluation value and the product index and written into the blockchain platform. For example, the third credit evaluation value is the second credit evaluation value product index. Generally, for those commodities with a service life, the seller will be more urgent to sell the commodities closer to the service life. By setting the product index at this time, the product index is higher the closer the seller ships to the product life, which makes the evaluation component of the product heavier for the buyer. The seller can pay more caution when selling the second-hand commodity, because the credit evaluation value of the seller is greatly reduced once the product quality is out of date.
In one embodiment, logistics companies may also be deployed as nodes in a blockchain platform. When the seller ships, the logistics company can write the shipping information into the blockchain platform. And when the buyer signs for the commodity, the signing information is written into the block chain platform, and then the fee paid by the buyer is transferred into the account of the seller. By arranging the logistics company, the seller and the buyer can check the logistics information of the commodity more conveniently.
In one embodiment, the detection mechanism may also be deployed as a node in a blockchain platform. After the seller writes the commodity description of the second-hand commodity sold by the seller into the block chain platform, the detection mechanism can detect the commodity description. Wherein, the commodity description comprises at least one of pictures and videos. Whether the pictures or videos are subjected to illegal processing is detected, for example, the pictures or videos of the second-hand commodities are subjected to image or video processing software, damaged parts are processed into undamaged parts, colors of the second-hand commodities are changed, and the like. And finally, writing the detection result into the block chain platform for reference when the buyer buys the second-hand commodity.
As shown in fig. 2, an embodiment of the present application further provides a used transaction platform evaluation device based on a blockchain, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to:
deploying a blockchain platform based on the blockchain framework;
taking buyers and sellers in a second-hand transaction platform as nodes and deploying the nodes in the blockchain platform;
after the transaction between the buyer and the seller is finished, receiving a first credit evaluation value of the buyer to the seller in the transaction process;
determining a second credit evaluation value of the seller in the transaction process according to the first credit evaluation value and the destruction value of the buyer in the currency day in the transaction process;
and writing the first credit evaluation value, the currency day destruction value and the second credit evaluation value into the block chain platform.
The embodiment of the application also provides a nonvolatile computer storage medium for evaluating the second-hand transaction platform based on the blockchain, which stores computer executable instructions, wherein the computer executable instructions are set as follows:
deploying a blockchain platform based on the blockchain framework;
taking buyers and sellers in a second-hand transaction platform as nodes and deploying the nodes in the blockchain platform;
after the transaction between the buyer and the seller is finished, receiving a first credit evaluation value of the buyer to the seller in the transaction process;
determining a second credit evaluation value of the seller in the transaction process according to the first credit evaluation value and the destruction value of the buyer in the currency day in the transaction process;
and writing the first credit evaluation value, the currency day destruction value and the second credit evaluation value into the block chain platform.
The embodiments in the present application are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the device and media embodiments, the description is relatively simple as it is substantially similar to the method embodiments, and reference may be made to some descriptions of the method embodiments for relevant points.
The device and the medium provided by the embodiment of the application correspond to the method one to one, so the device and the medium also have the similar beneficial technical effects as the corresponding method, and the beneficial technical effects of the method are explained in detail above, so the beneficial technical effects of the device and the medium are not repeated herein.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A second-hand transaction platform evaluation method based on a block chain is characterized by comprising the following steps:
deploying a blockchain platform based on the blockchain framework;
taking buyers and sellers in a second-hand transaction platform as nodes and deploying the nodes in the blockchain platform;
after the transaction between the buyer and the seller is finished, receiving a first credit evaluation value of the buyer to the seller in the transaction process;
determining a second credit evaluation value of the seller in the transaction process according to the first credit evaluation value and the destruction value of the buyer in the currency day in the transaction process;
and writing the first credit evaluation value, the currency day destruction value and the second credit evaluation value into the block chain platform.
2. The method of claim 1, further comprising:
and generating a corresponding intelligent contract and deploying the intelligent contract in the blockchain platform, wherein the intelligent contract comprises the first credit evaluation value, the amount of the currency in the transaction process and the time length of the currency held by the buyer.
3. The method of claim 2, wherein the smart contract is configured to: and multiplying the currency number by the time length to obtain the currency day destruction value, determining the second credit evaluation value according to the first credit evaluation value and the currency day destruction value, and writing the second credit evaluation value into the block chain platform.
4. The method of claim 1, wherein prior to the transaction ending, the method further comprises:
determining historical transaction records and/or suspected historical transaction records of the seller in the blockchain platform, wherein the suspected historical transaction records refer to that, for each historical transaction record in the blockchain platform, if at least one of an IP address, an equipment MAC address, a router MAC address and a browser cookie record of the seller corresponding to the historical transaction record is the same as that of the seller in the transaction, the suspected historical transaction record is used as the suspected historical transaction record of the seller;
and if an abnormal transaction record exists in the historical transaction record and/or the suspected historical transaction record of the seller, sending a prompt to the buyer.
5. The method of claim 1, wherein prior to the transaction ending, the method further comprises:
acquiring commodity information of a second-hand commodity sold by the seller, and writing the commodity information into the block chain platform, wherein the commodity information comprises a service life;
determining a commodity index according to the service life and the time of delivery of the seller in the transaction process, wherein the commodity index is higher when the delivery time is closer to the service life;
after determining the second credit evaluation value of the seller in the transaction process, the method further comprises:
determining a third credit evaluation value according to the commodity index and the second credit evaluation value;
writing the third credit evaluation value into the blockchain platform.
6. The method of claim 1, further comprising:
deploying logistics companies as nodes in the blockchain platform;
the logistics company writes the signing information of the buyer signing commodity into the block chain platform;
and transferring the payment paid by the buyer into the account of the seller.
7. The method of claim 1, further comprising:
deploying a detection mechanism as a node in the blockchain platform;
acquiring commodity description of a second-hand commodity sold by the seller, and writing the commodity description into the block chain platform, wherein the commodity description comprises at least one of pictures and videos;
and the detection mechanism writes a detection result of whether the pictures and the videos are subjected to violation processing into the block chain platform.
8. The method of claim 1, wherein receiving a first credit rating value of the buyer to the seller during the transaction comprises:
receiving a first credit evaluation value of the buyer to the seller in the transaction process and an evaluation description of the buyer, wherein the evaluation description comprises at least one of a text description, a picture description and a video description.
9. A second-hand transaction platform evaluation device based on a blockchain is characterized by comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to the at least one processor; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to:
deploying a blockchain platform based on the blockchain framework;
taking buyers and sellers in a second-hand transaction platform as nodes and deploying the nodes in the blockchain platform;
after the transaction between the buyer and the seller is finished, receiving a first credit evaluation value of the buyer to the seller in the transaction process;
determining a second credit evaluation value of the seller in the transaction process according to the first credit evaluation value and the destruction value of the buyer in the currency day in the transaction process;
and writing the first credit evaluation value, the currency day destruction value and the second credit evaluation value into the block chain platform.
10. A non-transitory computer storage medium for blockchain based evaluation of second-hand transaction platforms, the medium storing computer-executable instructions configured to:
deploying a blockchain platform based on the blockchain framework;
taking buyers and sellers in a second-hand transaction platform as nodes and deploying the nodes in the blockchain platform;
after the transaction between the buyer and the seller is finished, receiving a first credit evaluation value of the buyer to the seller in the transaction process;
determining a second credit evaluation value of the seller in the transaction process according to the first credit evaluation value and the destruction value of the buyer in the currency day in the transaction process;
and writing the first credit evaluation value, the currency day destruction value and the second credit evaluation value into the block chain platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911194263.XA CN110990888A (en) | 2019-11-28 | 2019-11-28 | Block chain-based second-hand transaction platform evaluation method, equipment and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911194263.XA CN110990888A (en) | 2019-11-28 | 2019-11-28 | Block chain-based second-hand transaction platform evaluation method, equipment and medium |
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| Publication Number | Publication Date |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112270420A (en) * | 2020-11-16 | 2021-01-26 | 葛洲坝展慈（宁波）金属工业有限公司 | Mobile phone recovery method and block chain mobile phone recovery platform |
| WO2021219038A1 (en) * | 2020-04-30 | 2021-11-04 | 深圳前海星际同辉科技有限公司 | Credit evaluation method, credit evaluation system, and readable storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021219038A1 (en) * | 2020-04-30 | 2021-11-04 | 深圳前海星际同辉科技有限公司 | Credit evaluation method, credit evaluation system, and readable storage medium |
| CN112270420A (en) * | 2020-11-16 | 2021-01-26 | 葛洲坝展慈（宁波）金属工业有限公司 | Mobile phone recovery method and block chain mobile phone recovery platform |
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