CN111597273A - Data sharing method and supply chain financial system - Google Patents
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Abstract
The application discloses a data sharing method, which comprises the following steps: a first node of a block chain network determines target data to be shared; the first node processes the target data, establishes a sharing rule and writes the sharing rule into an intelligent contract of the block chain network; the first node writes the processed target data into the blockchain network. By applying the technical scheme provided by the embodiment of the application, the shared data is processed data, the chaos of the shared data can be avoided, the data requiring party is ensured to be reliable and effective in acquiring the downloaded data, meanwhile, the data processing is carried out by the data providing party, and the data providing party cannot lose the control right and ownership of the data. The application also discloses a supply chain financial system, which at least comprises two block chain networks, namely a trade chain network and a financial chain network, and the shared data collected by each node is processed data, so that the corresponding technical effect is achieved.
Description
Technical Field
The present application relates to the field of information technology, and in particular, to a data sharing method and a supply chain financial system.
Background
In the internet era, various types of data are increasing, and all traces left on the network can be referred to as data. Through data sharing, a data demand party can acquire a large amount of data, and therefore clues, rules and the like full of value behind the data can be found through big data analysis.
At present, when data sharing is performed, a data provider mostly directly shares source data, and the shared source data are relatively disordered, so that in scenes such as the supply chain financial field and the like, a data stream which is large in scale and cannot be completely trusted is faced, and data security cannot be guaranteed. Supply chain finance can effectively utilize the value behind big data under the background of internet and big data rapid development, promotes the internal integration of big data and supply chain network, and has important meaning to supply chain finance future development and enterprise operating efficiency.
In summary, how to share data, avoid the chaos of shared data, and ensure that data acquired by a data demand party is reliable and effective is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The application aims to provide a data sharing method and a supply chain financial system so as to avoid the chaos of shared data and ensure that data acquired by a data demand party is reliable and effective.
In order to solve the technical problem, the application provides the following technical scheme:
a method of data sharing, comprising:
a first node of a block chain network determines target data to be shared, wherein the first node is a node corresponding to any data provider in the block chain network;
the first node processes the target data, establishes a sharing rule and writes the sharing rule into an intelligent contract of the block chain network;
the first node writes the processed target data into the blockchain network.
In a specific embodiment of the present application, the processing the target data includes:
and processing the target data based on the data domain form.
In a specific embodiment of the present application, after the first node writes the processed target data into the blockchain network, the method further includes:
and the common identification node of the block chain network establishes a target index for the processed target data according to the intelligent contract and issues the target index so that each node of the block chain network stores the target index into an index base maintained by the node.
In one embodiment of the present application, the method further includes:
and a second node of the block chain network inquires an index database maintained by the second node according to the demand, and acquires corresponding processed data based on the inquired index, wherein the second node is a node corresponding to any data demand party in the block chain network.
A supply chain financial system comprising at least two blockchain networks, a trade chain network comprising a core enterprise node, a commercial bank node and at least one supply chain other enterprise node, and a financial chain network comprising the commercial bank node, the core enterprise node and at least one other core enterprise node;
a first node in a first blockchain network, configured to:
determining target data to be shared;
processing the target data, establishing a sharing rule, and writing the sharing rule into an intelligent contract of the first block chain network;
writing the processed target data into the first block chain network;
the first node is a node corresponding to any data provider in the first blockchain network, and the first blockchain network is any blockchain network included in the supply chain financial system.
In a specific embodiment of the present application, the first node is configured to:
and processing the target data based on the data domain form.
In a specific embodiment of the present application, the consensus node of the first blockchain network is configured to:
after the first node writes the processed target data into the first block chain network, according to the intelligent contract, a target index is established for the processed target data, and the target index is issued, so that each node of the first block chain network stores the target index into an index library maintained by the node.
In one embodiment of the present application, the second node in the first blockchain network is configured to:
and inquiring an index base maintained by the node according to the requirement, and acquiring corresponding processed data based on the index obtained by inquiry, wherein the second node is a node corresponding to any data demander in the first block chain network.
In a specific embodiment of the present application, the trade chain network is established by a core enterprise leader corresponding to the core enterprise node, and records trade related data; and the financial chain network is established by the business bank corresponding to the business bank node and records financial related data.
In one embodiment of the present application, data of each core enterprise node in the financial chain network is isolated by a tunneling technique.
By applying the technical scheme provided by the embodiment of the application, after determining the target data to be shared, the first node serving as the data provider of the block chain network processes the target data, establishes the sharing rule, writes the sharing rule into the intelligent contract of the block chain network, and then writes the processed target data into the block chain network. Therefore, the shared data is processed data, the chaos of the shared data can be avoided, the data acquired by the data demand side is reliable and effective, meanwhile, the data processing is carried out by the data provider, and the data provider cannot lose the control right and ownership of the data.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating an implementation of a data sharing method according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a supply chain financial system according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of an order financing service mode in an embodiment of the present application.
Detailed Description
The core of the application is to provide a data sharing method which can be applied to a block chain network. Essentially, the blockchain is a shared database, and the data or information stored in the database has the characteristics of being unforgeable, having trace in the whole process, being traceable, being publicly transparent, being maintained in a collective way and the like.
The blockchain network may include a plurality of nodes, and after determining target data to be shared, a first node serving as a data provider may process the target data, establish a sharing rule, write the sharing rule into an intelligent contract of the blockchain network, and then write the processed target data into the blockchain network. Therefore, the shared data is processed data, the chaos of the shared data can be avoided, the data acquired by the data demand side is reliable and effective, meanwhile, the data processing is carried out by the data provider, and the data provider cannot lose the control right and ownership of the data.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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.
Referring to fig. 1, a flowchart of an implementation of a data sharing method provided in an embodiment of the present application is shown, where the method may include the following steps:
s110: a first node of a blockchain network determines target data to be shared.
The first node is a node corresponding to any data provider in the block chain network.
In this embodiment of the present application, a node corresponding to any one data provider in the blockchain network may be referred to as a first node. And the first node determines target data to be shared according to actual conditions when data sharing needs to be carried out.
After the first node determines the target data to be shared, the operation of step S120 may be continuously performed.
S120: the first node processes the target data, establishes a sharing rule and writes the sharing rule into an intelligent contract of the block chain network.
An intelligent contract is a computer protocol intended to propagate, validate or execute contracts in an informational manner. Each node of the block chain network follows an intelligent contract to share data.
After determining the target data to be shared, the first node may process the target data, for example, package the target data. And meanwhile, establishing a sharing rule, and writing the sharing rule into an intelligent contract of the block chain network.
Specifically, the target data may be processed based on a data field format. Such as representing the target data using a set data field format.
S130: the first node writes the processed target data into the blockchain network.
After the first node processes the target data, the processed target data may be written into the blockchain network, and the data written into the blockchain network may be available for downloading and use after being acquired by a node serving as a data demand side in the blockchain network. Therefore, the shared data written into the block chain network are all data processed by the data provider, the chaos of the shared data is avoided, the data acquired by the data demand side is reliable and effective, and the control right and ownership of the data are still in the data provider.
By applying the method provided by the embodiment of the application, the first node serving as the data provider of the block chain network processes the target data after determining the target data to be shared, establishes the sharing rule, writes the sharing rule into the intelligent contract of the block chain network, and then writes the processed target data into the block chain network. Therefore, the shared data is processed data, the chaos of the shared data can be avoided, the data acquired by the data demand side is reliable and effective, meanwhile, the data processing is carried out by the data provider, and the data provider cannot lose the control right and ownership of the data.
In one embodiment of the present application, after the first node writes the processed target data into the blockchain network, the method may further include the steps of:
and establishing a target index for the processed target data by the common identification node of the block chain network according to the intelligent contract, and distributing the target index so that each node of the block chain network stores the target index into an index base maintained by the node.
In practical application, part of nodes in the block chain network can be determined as consensus nodes according to practical situations, and the consensus nodes are endowed with designated responsibilities.
After the first node writes the processed target data into the blockchain network, the consensus node of the blockchain network may establish a target index for the processed target data according to an intelligent contract, and issue the target index to each node of the blockchain network. Each node of the block chain network can maintain an index base, and after the target index is obtained, the target index can be stored in the index base maintained by the node.
The target data after processing is searched through the index, so that the searching is more convenient, and the searching efficiency can be improved.
In one embodiment of the present application, the method may further comprise the steps of:
and a second node of the block chain network inquires an index database maintained by the second node according to the demand, acquires corresponding processed data based on the inquired index, and is a node corresponding to any data demand party in the block chain network.
In the embodiment of the application, the common node of the blockchain network establishes an index for the processed data and issues the index, and each node of the blockchain network maintains an index database. The node serving as a data demand side in the block chain network can be queried in an index base maintained by the node according to actual demands, processed data corresponding to the index can be further obtained based on the index obtained through query, and then the obtained data can be further calculated.
By establishing indexes for the processed data, the discovery efficiency of the shared data can be improved.
In practical applications, the blockchain network may be applied to the supply chain financial field. Participants of the supply chain participate in building a alliance chain together, an ecosphere is formed on the basis of a block chain technology, a platform is shared among all aspects in the process, high-transparency information sharing is carried out, and services such as supply chain finance and accurate marketing can be developed on the basis of block chain data.
Under the background of big data, the data storage and processing capacity is greatly improved, the cost of acquiring information by financial institutions of a supply chain is reduced, credit analysis and evaluation can be performed on other enterprises on the whole supply chain based on the credit condition of a core enterprise, data sharing among the financial institutions is realized, and a credit evaluation system is further improved. The financial institution can perform a comprehensive credit analysis and evaluation on the enterprise needing financing and even the whole supply chain based on the whole supply chain, on one hand, the financial data of the enterprise, such as cash flow of the enterprise, the wage level of employees, asset liability, investment preference and the like; on the other hand, through the analysis of financial data and operational data of enterprises and the big data technology processing, a set of perfect credit worthiness assessment of credit granting enterprises can be established, so that the conditions of the enterprises are objectively reflected, the financial institutions can better judge and decide, and the credit worthiness assessment and loan speed of the financial institutions for small and medium enterprises is improved.
Data open sharing is a source power for promoting the development of data-related industries, and the existing data sharing models, such as logistics, information flow and fund flow in a supply chain financial system, are important embodiments of data sharing. And the data provider uploads the data to the data storage center, and the data demander downloads the data to realize analysis. This model has the following drawbacks:
firstly, data transaction lacks transparency, and fraud behaviors such as collusion of transaction participants cannot be effectively detected and prevented;
secondly, the data provider loses the control right and ownership of the data, and the data security cannot be guaranteed.
At present, the big data industry faces a data island dilemma of 'data is available to people and data is not available to people', and an effective solution is to establish a reasonable, open and efficient decentralized data sharing model and solve the weakness of a data trust mechanism. The embodiment of the application is to establish the data sharing model, the data provider processes target data to be shared, establishes a sharing rule, writes the sharing rule into an intelligent contract of a block chain network, and writes the processed target data into the block chain network, thereby effectively realizing data sharing. The data transaction based on the block chain is established, the transaction transparency and the fraud behaviors such as collusion prevention are realized, and the calculation and output privacy of a data provider can be guaranteed by means of safe multi-party calculation and a differential privacy technology.
Corresponding to the above method embodiments, the present application further provides a supply chain financial system, and the supply chain financial system described below and the data sharing method described above may be referred to correspondingly.
Referring to fig. 2, the supply chain financial system includes at least two block chain networks, namely a trade chain network and a financial chain network, wherein the trade chain network includes a core enterprise node, a commercial bank node and at least one other enterprise node of the supply chain, and the financial chain network includes a commercial bank node, a core enterprise node and at least one other core enterprise node;
a first node in a first blockchain network, configured to:
determining target data to be shared;
processing the target data, establishing a sharing rule, and writing the sharing rule into an intelligent contract of the first block chain network;
writing the processed target data into a first block chain network;
the first node is a node corresponding to any data provider in the first blockchain network, and the first blockchain network is any blockchain network included in the supply chain financial system.
In an embodiment of the present application, a supply chain financial system includes at least two blockchain networks, one trade chain network and one financial chain network. Of course, other block chain networks, such as logistics chain networks, may also be included, depending on the actual situation.
The trade chain network may include a core enterprise node, a commercial bank node, and at least one other enterprise node of the supply chain. The financial chain network includes a commercial bank node, a core enterprise node, and at least one other core enterprise node.
And the trade chain network is established by the core enterprise corresponding to the core enterprise node and records the relevant trade data. Specifically, the enterprises in the supply chain and small and medium-sized downstream enterprises, logistics storage companies and the like can form a alliance, and the commercial bank can also be added as an alliance node, so that the authenticity of trade related data such as contracts, orders, logistics, storage, material identifications, bills and the like is guaranteed, and the commercial bank can give credit to the enterprises applying for financing based on the information on the chain.
The financial chain network is established by the commercial bank corresponding to the commercial bank node, and records financial related data, such as enterprise financing data, enterprise credit line data, payment repayment data, payment settlement data and the like. All core enterprises cooperating with commercial banks can form a alliance chain. Data of each core enterprise node in the financial chain network can be isolated through a channel technology, namely, the data among all the partners is isolated by utilizing technologies such as 'channels' and the like, so that privacy and safety are guaranteed. The core enterprise participates as a alliance node, and can also be guaranteed to master the financing conditions of upstream and downstream enterprises in time.
In a specific implementation manner of the application, the whole architecture of a supply chain financial system is realized through a 'double-chain' mode, a commercial bank serves as a node of a trade chain, a core enterprise also serves as a node of the financial chain, the commercial bank and the core enterprise mutually trust and communicate, the commercial bank can acquire trade related data through the trade chain, and the fact that trade backgrounds corresponding to financing are real, trade credibility and commodity flow logistics are controllable is guaranteed; the core enterprise can carry on the financing endorsement for the upstream and downstream enterprises through the financial chain, and timely master the financing, repayment and credit granting conditions of the upstream and downstream enterprises.
In the supply chain financial system provided in the embodiment of the present application, the first node in the first blockchain network may be configured to process the target data to be shared, establish a sharing rule, write the sharing rule into an intelligent contract of the first blockchain network, and write the processed target data into the first blockchain network. The first node is a node corresponding to any data provider in a first block chain network, and the first block chain network is any block chain network included in a supply chain financial system. If the supply chain financial system is a double-chain structure including a financial chain network and a trade chain network, the first blockchain network is the financial chain network or the trade chain network.
Specifically, the first node may process the target data based on the data domain form.
It should be noted that, if the first node is simultaneously located in a plurality of blockchain networks, such as a financial chain network and a trade chain network, the processed target data of the first node is simultaneously written into each blockchain network where the first node is located.
In an embodiment of the application, after the first node writes the processed target data into the first blockchain network, the common node of the first blockchain network may establish a target index for the processed target data according to an intelligent contract, and distribute the target index, so that each node of the first blockchain network stores the target index into an index library maintained by the node.
In an embodiment of the application, a second node of the first blockchain network may query an index library maintained by the second node according to a requirement, and obtain corresponding processed data based on an index obtained by the query, where the second node is a node corresponding to any data demander in the first blockchain network.
By applying the data sharing mode to each node of the supply chain financial system, the transparency, the credibility and the controllability of data can be realized.
Supply chain finance is a new financing mode, in which the main body includes not only commercial banks and financing enterprises in the traditional credit mode, but also core enterprises and logistics enterprises, wherein the core enterprises play a credit supporting role in supply chain finance, and the operation conditions of the core enterprises determine the operation conditions of the whole supply chain finance. Based on the block chain technology, the commercial bank can monitor and analyze the whole flow of trade background, business flow, logistics and fund flow, provide financing for downstream enterprises directly based on orders between the downstream enterprises and core enterprises, do not occupy credit lines of the core enterprises any more, and do not need to mortgage the goods. If the downstream enterprises on the due repayment date can not repay in time, the core enterprises undertake the buyback responsibility and pay the financing money and interest to the commercial banks. The supply chain finance changes the traditional financing mode and the credit granting mode for small and medium enterprises, converts the uncontrollable risk of a single enterprise into the overall controllable risk of the supply chain enterprise, improves the financial efficiency, reduces the financing threshold of the small and medium enterprises, and improves the competitiveness, thereby effectively solving the dilemma of difficult financing, difficult financing and difficult financing of the small and medium enterprises.
In practical application, in order to ensure orderly development of business and controllable risk, the method can be tried in two stages: the method is based on the development of white list downstream enterprises provided by core enterprises, and with the continuous development of transactions, data collected by commercial banks is continuously abundant, and a wind control model is continuously strengthened, so that the method can be further opened to all the first-level downstream enterprises of the core enterprises.
The following describes an embodiment of the present application by taking a specific application scenario of the embodiment of the present application shown in fig. 3 as an example. The supply chain financial system comprises two block chain networks, namely a trade chain network and a financial chain network.
(1) The downstream enterprise B places an order to the core enterprise A to purchase 500 ten thousand raw materials, and the order information and the contract information are written into the trade chain network to be stored;
(2) if the downstream enterprise B has a financing requirement, the 'financing payment' can be directly selected when placing an order, and a financing proportion (the upper limit of the financing proportion is given by the commercial bank C according to the related data analysis of the downstream enterprise B) is selected, and if the financing proportion is selected to be 50%, the downstream enterprise B only needs to pay 250 ten thousand of the goods, and the other 250 ten thousand of financing requests are written into the trade chain network and sent to the commercial bank C;
(3) after the commercial bank C is approved, the approval result is written into the financial chain network, if the approval is passed, A, B, C three parties sign financing contracts (agreement of financing amount, money transfer mode, repayment date, buyback responsibility, bank account and the like) on line, and contract information is written into the financial chain network for retention;
(4) after the approval is passed, the commercial bank C automatically puts money into a designated account of the core enterprise A through an intelligent contract of the financial chain network, and simultaneously writes related money transfer information into the financial chain network;
(5) after receiving the fund, the core enterprise A writes the confirmation information into a trade chain network and starts to produce according to the order;
(6) after the core enterprise A finishes production, delivering the goods to a downstream enterprise B, and simultaneously writing goods information (such as new material identification analysis information, goods content and the like) and logistics information into a trade chain network;
(7) after receiving the goods, the downstream enterprise B can directly start to organize production, and simultaneously write the goods receiving information, the production information and the like into the trade chain network;
(8) before the appointed repayment date, the downstream enterprise B completes repayment on time, and the related repayment information is written into the financial chain network;
(9) if the downstream enterprise B can not pay on time, the core enterprise A fulfills the buyback promise and pays financing money and interest to the commercial bank C, and the overdue information of the B and the buyback information of the A are written into the financial chain network.
By the block chain technology, the contracts, orders, logistics, goods and funds of the transaction and financing parties are all kept in a mode of being difficult to tamper and easy to trace, automatic paying and deducting operations are achieved by means of intelligent contracts, the service efficiency is improved, and the service risk is reduced. Meanwhile, the data written into the block chain network are processed according to the corresponding intelligent contract.
The system provided by the embodiment of the application at least comprises two block chain networks, namely a trade chain network and a financial chain network, so that data sharing is realized, uncontrollable risks of a single enterprise are converted into overall controllable risks of the supply chain enterprise, and the financial efficiency is improved. And when data is shared, processing the data, establishing a sharing rule, writing the sharing rule into an intelligent contract of the block chain network, and then writing the processed data into the block chain network. Therefore, the shared data is processed data, the chaos of the shared data can be avoided, the data acquired by the data demand side is reliable and effective, meanwhile, the data processing is carried out by the data provider, and the data provider cannot lose the control right and ownership of the data.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The principle and the implementation of the present application are explained in the present application by using specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. A method for sharing data, comprising:
a first node of a block chain network determines target data to be shared, wherein the first node is a node corresponding to any data provider in the block chain network;
the first node processes the target data, establishes a sharing rule and writes the sharing rule into an intelligent contract of the block chain network;
the first node writes the processed target data into the blockchain network.
2. The method of claim 1, wherein the processing the target data comprises:
and processing the target data based on the data domain form.
3. The method according to claim 1 or 2, wherein after the first node writes the processed target data into the blockchain network, further comprising:
and the common identification node of the block chain network establishes a target index for the processed target data according to the intelligent contract and issues the target index so that each node of the block chain network stores the target index into an index base maintained by the node.
4. The method of claim 3, further comprising:
and a second node of the block chain network inquires an index database maintained by the second node according to the demand, and acquires corresponding processed data based on the inquired index, wherein the second node is a node corresponding to any data demand party in the block chain network.
5. A supply chain financial system comprising at least two blockchain networks, a trade chain network comprising a core enterprise node, a commercial bank node and at least one other supply chain enterprise node, and a financial chain network comprising the commercial bank node, the core enterprise node and at least one other core enterprise node;
a first node in a first blockchain network, configured to:
determining target data to be shared;
processing the target data, establishing a sharing rule, and writing the sharing rule into an intelligent contract of the first block chain network;
writing the processed target data into the first block chain network;
the first node is a node corresponding to any data provider in the first blockchain network, and the first blockchain network is any blockchain network included in the supply chain financial system.
6. The system of claim 5, wherein the first node is configured to:
and processing the target data based on the data domain form.
7. The system of claim 5, wherein the consensus node of the first blockchain network is configured to:
after the first node writes the processed target data into the first block chain network, according to the intelligent contract, a target index is established for the processed target data, and the target index is issued, so that each node of the first block chain network stores the target index into an index library maintained by the node.
8. The system of claim 7, wherein the second node in the first blockchain network is configured to:
and inquiring an index base maintained by the node according to the requirement, and acquiring corresponding processed data based on the index obtained by inquiry, wherein the second node is a node corresponding to any data demander in the first block chain network.
9. The system of claim 5, wherein the trade chain network is established by a core enterprise leader corresponding to the core enterprise node, and records trade related data; and the financial chain network is established by the business bank corresponding to the business bank node and records financial related data.
10. The system according to any one of claims 5 to 9, wherein data of each core enterprise node in the financial chain network is isolated by a tunneling technique.
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