CN113111387A - Method, device and system for sharing transaction metadata information among multiple financial asset parties based on block chain - Google Patents
Method, device and system for sharing transaction metadata information among multiple financial asset parties based on block chain Download PDFInfo
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Abstract
The invention discloses a method, a device and a system for sharing transaction metadata information among multiple parties of financial assets based on a block chain, wherein transaction metadata are extracted from transaction data of each party of financial assets and written into the block chain to form a block chain account book information record of the shared transaction metadata, and the method comprises the following steps: issuing digital signature certificates based on a PKI/CA system for block chain nodes and financial asset transaction parties, wherein the digital signature certificates are used for financial asset transaction metadata records and block encryption signatures; desensitizing the financial asset transaction main body information, extracting financial asset transaction metadata from financial asset original transaction data, uploading the financial asset transaction metadata to a block chain node, confirming the financial asset transaction metadata by the financial asset transaction main body, writing the confirmed financial asset transaction metadata into the block chain by the block chain node, and inquiring the block chain information after the data inquiring party is authorized; in the credential issuing business scene, the financial asset original transaction and the attached data are encrypted and stored through the storage service module, and the related transaction credentials are provided for the financial asset transaction sharing party, the transaction main body and the transaction main body counter party.
Description
Technical Field
The invention relates to the technical field of financial credit investigation information safety, in particular to a block chain-based method, a device and a system for sharing transaction metadata information among multiple financial assets.
Background
With the continuous development of internet information technology, the financial industry is also gradually networked, and further emerging internet financial industries such as network lending, consumer finance, internet insurance and the like are gradually increased. The financial business developed on the internet faces several problems as follows:
one, personal or business credit data dimension singleness question: in the field of internet financial loan, the repayment capacity of a borrowed person or a borrowed enterprise needs to be comprehensively evaluated, in the field of electronic commerce consumption finance, the commodity consumption capacity or consumption loan condition needs to be provided for a user according to a user transaction record, in the field of financial insurance, the whole asset allocation condition of a person or a family needs to be comprehensively evaluated, but at present, each platform only has partial personal or enterprise investment, loan or sales information, and the real financial condition of the person or the enterprise cannot be comprehensively evaluated;
secondly, the problems of personal or enterprise financial data segmentation and hysteresis: at present, most transaction systems are centralized transaction systems, and due to the business safety consideration of the centralized systems providing various services, all parties are reluctant to share business data. For example, the existing traditional financial credit does not summarize data such as financial borrowing and lending of all parties, consumption records and the like, the personal or enterprise financial credit condition can not be effectively reflected, the existing credit investigation does not perform modeling analysis on the data at any time, and the personal or enterprise credit has hysteresis;
thirdly, the data rights and interests of all parties of the financial, financing, credit investigation and wind control and financial asset transaction of the internet are confirmed, and the problem of how to fairly and effectively provide the transaction evidence when business disputes occur is solved.
In reality, the transaction data of the user serving as the transaction subject is only kept on each centralized platform, and the user cannot really own the data and share the related rights and interests brought by the big data. In addition, most of the problem solutions rely on a centralized system, related data information is stored in a central database, once the data is not credible or the data is at risk of loss, the authenticity of the data cannot be effectively guaranteed, and once business disputes occur, related transaction credentials can only be issued from the centralized platform to transaction subjects, such as financial asset parties, lenders and sellers in electronic commerce.
With the invention of digital cryptocurrency such as bitcoin, the block chain technology behind the invention attracts more and more attention as a distributed shared accounting mode. The blockchain technology has the characteristics of decentralization, distributed accounts, extremely difficult transaction tampering and the like, but at the same time, the blockchain technology also has the real situations of anonymity and low transaction efficiency at present, the situations are comprehensively considered, and the respective advantages of the centralization system and the decentralization system are combined, so that the blockchain technology is particularly suitable for being applied to a specific scene of safely sharing transaction data among multiple parties if innovative application is carried out on the blockchain technology.
At present, some enterprises try to introduce the block chain technology into the related fields of personal or enterprise credit record, evidence preservation and real-time transaction, but when the internet financial industry develops business, how to better develop asset allocation evaluation, loan wind control and personal and enterprise credit investigation, the potential of the related fields of issuing of transaction credentials is not fully explored, and how to solve the related problems by using the block chain technology is worth further research.
Disclosure of Invention
Based on the above, the present invention provides a method, an apparatus, and a system for sharing transaction metadata by multiple parties based on a block chain, which provide a solution for sharing transaction information while fully considering the security of transaction data of each party, so as to solve the problems proposed in the background art.
According to one aspect of the invention, a method for sharing transaction metadata by multiple parties based on a block chain is provided, and the method is characterized in that transaction metadata is extracted from transaction data of each party and written into the block chain to form a block chain ledger of distributed shared transaction metadata, and the method comprises the following steps: and (3) registration and authorization: the transaction sharing party, the block chain link points and the transaction main body perform identity authentication and authorization through the registration authorization module, apply for a digital signature certificate based on a PKI/CA system and are used for transaction records and encrypted signatures of blocks; data uploading and confirming: the transaction sharing party extracts transaction metadata subjected to desensitization processing from original transaction data, the transaction metadata are signed and then uploaded to a block chain node, the original transaction and the attached data are stored in an encrypted mode through a storage service module, and a transaction main body confirms the transaction metadata on the block chain node; block chain accounting: each block link point packs the confirmed transaction metadata into blocks, the confirmed blocks are transmitted through a consensus algorithm, a set of distributed shared transaction metadata block chain accounts is finally formed in the whole network, and a timestamp service module provides block chain accounting timestamp and time synchronization service; data query: the data sharing party can inquire the data uploaded by other data sharing parties in the block chain account book after being authorized, and can also inquire the customized data through a data service module; issuing a certificate: the original transaction and the attached data are encrypted and stored through the storage service module, and relevant transaction credentials are provided for the transaction sharing party, the transaction main body and the transaction main body counter party.
Preferably, in the step of registering authorization, the method further comprises: the data sharing direction registration authorization module submits a service signature certificate application, and the block chain node submits a block signature certificate application to the registration authorization module; the block chain node can proxy and forward identity authentication, registration authorization and service signature certificate application of a data sharing party; the registration authorization module adopts a PKI/CA technical system to perform registration authorization management on the block chain nodes and the data sharing party and sends corresponding digital certificates based on public and private key pairs to the block chain nodes and the data sharing party, wherein the block signature digital certificates are sent to the block chain nodes for block digital signature, and the service signature certificates are sent to the data sharing party for transaction record data signature.
Preferably, in the data upload confirmation step, the method further includes: the data share all directions block chain nodes upload transaction metadata records, each note record is stamped with a timestamp and signed by a service signature certificate, and the transaction metadata information comprises three parts of information: transaction body information, service metadata information and transaction credential information; desensitizing personal or business information in the transaction subject information, including: type (personal/business/other), name Hash value, certificate type, certificate number Hash value, collateral information type (none/other), collateral information Hash value; considering the safety of the shared service of each party, the original transaction data of the service is not directly stored in the block record, but the basic transaction information is extracted from the service transaction, and the transaction record is divided into two data, namely a transaction main body and a transaction main body counter party, which are called as service metadata, wherein the service metadata information comprises: type of service (financing/consumption/other), service code, type of transaction (debit/credit/receipt/payment/other), transaction code, currency type (RMB/other), amount, status of transaction (execution/completion/acknowledgement/other), time of transaction, type of adjunct data (none/message/file/other), value of adjunct data Hash.
Optionally, in the step of data upload confirmation, the method further includes: other information of a transaction main body, original transaction records of a service or accessory data generated in the service transaction are uploaded through a storage service module, the data can be used as accessory data of service metadata, the service metadata only stores a hash value of the accessory data, the accessory data information can be stored after being uniformly encrypted through the storage module according to service requirements, and the accessory data information also needs to be signed by a timestamp and a service signature certificate.
Preferably, in the data upload confirmation step, the method further includes: the data service module sends the transaction metadata on the block chain link points to the transaction main body, and after the transaction main body receives the transaction metadata information, on one hand, the transaction information related to the transaction main body and sent by the data sharing party can be confirmed, so that the transaction data can be guaranteed to be real and effective, and on the other hand, records in the block chain link can be inquired in real time according to the received transaction metadata information.
Preferably, in the block chain accounting step, the method further comprises: the block information comprises two parts, namely a block head and a block body, wherein the block head comprises information: the method comprises the following steps of firstly, recording the version number, the block ID, the record number, the Hash value of the previous block, the Merkel root of the block, a timestamp, a random number, a custom area and a block signature; the zone block contains a plurality of transaction metadata records.
Optionally, in the step of block chain accounting, the method further includes: in view of the requirement consistency of distributed accounting on time sources, information stored in attached data can be used as a transaction evidence, the correct consistency of the time sources is very critical, the whole network time is uniformly managed through a timestamp service module, each block chain node is regularly synchronized with time source service, and the timestamp service module provides timestamp and time synchronization service for block chain link points.
Preferably, the data query step further includes: because the blocks formed when each party uploads data are different, the metadata processing cannot reflect the specific service information of each party, and on the other hand, because the desensitization processing is performed on the transaction main body information recorded in the block chain, the information of the transaction main body cannot be reflected under the condition that the original identity information of the transaction main body is not obtained. However, under the condition of obtaining the authorization of the data sharing party and the transaction main body, the obtained data result can provide reference for the parties in carrying out specific services through the analysis and the integration of the data.
Optionally, the credential issuing step further includes: the method can provide related transaction credentials for an information sharing party, a transaction body and a transaction body counter party according to the following process steps, and specifically comprises the following steps: 1. inquiring the block chain metadata transaction records according to the transaction type and the transaction codes, and judging whether even number of metadata transaction records exist at the same time; 2. if the transaction exists, judging whether the transaction is a mutual transaction counterparty, and if the transaction types are mutually loan or transaction, the fund access quantity is consistent; 3. if the transaction counter-party is the transaction counter-party, original transaction information is inquired from the data storage service; 4. and decrypting the original transaction information, calculating a hash value, and if the hash value is consistent with the hash value recorded in the block chain record, determining that the original transaction information is not tampered, and providing the original transaction as a transaction credential.
Preferably, among them, further include: the system comprises a registration authorization module, a data service module, a storage service module and a timestamp service module, wherein each service module defines a uniform standard interface, and a service provider provides actual service according to the standard interface.
According to another aspect of the present invention, there is provided a device for sharing transaction metadata by multiple parties based on a block chain, wherein the device supports block chain accounting of transaction metadata, and comprises a block chain accounting master node and a block chain accounting slave node, wherein the block chain accounting master node participates in accounting and generates a block book, and transmits transactions and blocks to neighboring nodes; the block chain accounting slave node does not participate in accounting, only transmits transactions and blocks to adjacent nodes, and the plurality of devices form a block chain link point network; the device can accept service registration, data uploading and data query requests of a data sharing party, and can also initiate node registration, certificate application, data access, data storage, timestamp and time synchronization requests to each service module.
Preferably, in the block chain accounting process, the method further comprises: each information sharing party communicates with the block link points through terminal equipment or an API (application program interface) interface and uploads transaction metadata records, each note record contains a timestamp and a service signature certificate signature, the block link points pack the confirmed transaction metadata into blocks, block heads contain timestamps and block signature certificate signatures, the confirmed blocks are spread through a consensus algorithm, and finally a set of distributed shared transaction metadata block chain account book is formed in the whole network.
Preferably, in the process of accepting the request from the data sharing party, the apparatus further includes:
a service registration module: providing a service registration interface for each party sharing data, and forwarding a service authentication request to a registration authorization service module;
the data uploading module: and providing metadata uploading for each party sharing data, and providing uploading modes such as a terminal program or an interface API (application program interface) and the like according to the needs of the data sharing party. The uploaded metadata is directly sent to an adjacent node after node verification;
a data query module: the data inquiry function is provided for each party sharing data, the party of transaction main body and the data service module.
Preferably, in the process that the device initiates the service request to each service module, the method further includes:
node registration request: initiating a block link point registration request to a registration authorization module, applying for a block signature digital certificate, and also applying for a service signature certificate of a data sharing party by proxy forwarding;
and (3) data access request: initiating a data access request to a data service module;
data storage request: initiating a data storage request to a storage service module;
timestamp service and time synchronization request: and initiating a timestamp service and time synchronization request to a timestamp service module.
According to another aspect of the present invention, there is provided a block chain-based multi-party shared transaction metadata system, comprising the above block chain-based multi-party shared transaction metadata apparatus, and a series of distributed service modules, where the distributed service modules define a unified standard interface, and are implemented by a service provider to implement interface services, and the distributed service modules include a registration authorization service module, a data service module, a storage service module, and a timestamp service module, where:
a registration authorization module: providing identity authentication and authorization service for the data sharing party, the block chain link points and the transaction main body;
a data service module: obtaining unconfirmed transaction metadata from the block link points, and sending the unconfirmed transaction metadata to a transaction main body for transaction metadata confirmation; various data models are built in, and customized data services are provided;
a storage service module: storing a transaction main body and an original transaction record or accessory data generated in a business transaction, requiring encryption storage, and issuing a transaction certificate to each transaction party in certificate issuing;
the timestamp service module: the method provides time stamp service for the block chain nodes, provides time synchronization service for the block chain nodes, and is internally provided with various strategies to support time sources of various time zones.
In the block chain-based multi-party shared transaction metadata method, device and system provided by the invention, a solution for multi-party shared transaction information is provided while the security of transaction data of each party is ensured, social resources are saved to the maximum extent, the operability is strong, and scenes that multiple parties need to share data in a specific industry field, such as financial asset credit wind control, electronic commerce consumption financial credit evaluation, personal and enterprise credit collection, transaction certificate issuing security and the like, can be solved. The method can also be used in other scenes in which multiple parties in a specific field need to share data.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a block chain-based method, device and system for sharing transaction metadata information between financing parties in accordance with an embodiment of the present invention.
Fig. 2 is a schematic diagram of a transaction metadata record structure according to an embodiment.
FIG. 3 is a block recording diagram according to an embodiment.
Fig. 4 is a diagram illustrating an embodiment of a transaction agent querying a blockchain transaction record.
Fig. 5 is a schematic diagram illustrating issuing of transaction credentials according to an embodiment.
Fig. 6 is a schematic diagram of an exemplary embodiment of a transaction principal loan wind control assessment.
FIG. 7 is a diagram illustrating an exemplary transaction body credit evaluation.
Fig. 8 is a flow chart showing the links involved in the embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiment of the invention provides a method, a device and a system for sharing transaction metadata by multiple parties based on a block chain.
In an embodiment of the present invention, the present invention is embodied in a network system, including: a plurality of business systems, a plurality of block chain nodes, a transaction body, a series of distributed service modules, including: the system comprises a registration authorization service module, a data service module, a storage service module and a timestamp service module. The service system is the existing service system of each party sharing data and is communicated with the block link nodes through an API interface. The block chain node is a device of a software system and a hardware system for providing the accounting service, and is divided into an accounting main node and an accounting slave node, wherein the accounting main node can transmit the transaction records and also provide the accounting service, and the accounting slave node only transmits the transaction records. The centralized service module provides functional service for all information sharing parties and the block link points together.
Based on the above network system, the block chain-based multiparty transaction metadata sharing method of the embodiment is shown in fig. 1, and includes:
and (3) registration and authorization: the transaction sharing party, the block chain link points and the transaction main body are registered and authorized through the registration authorization service module, and apply for a digital signature certificate based on a PKI/CA system for transaction record and encrypted signature of the block;
data uploading and confirming: the transaction sharing party extracts transaction metadata subjected to desensitization processing from original transaction data, the transaction metadata are signed and then uploaded to a block chain node, the original transaction and the attached data are stored in an encrypted mode through a storage service module, and a transaction main body confirms the transaction metadata on the block chain node;
block chain accounting: each block link point packs the confirmed transaction metadata into blocks, the confirmed blocks are transmitted through a consensus algorithm, a set of distributed shared transaction metadata block chain accounts is finally formed in the whole network, and a timestamp service module provides block chain accounting timestamp and time synchronization service;
data query: the data sharing party can inquire the data uploaded by other data sharing parties in the block chain account book after being authorized, and can also inquire the customized data through a data service module;
issuing a certificate: the original transaction and the attached data are encrypted and stored through the storage service module, and relevant transaction credentials are provided for the transaction sharing party, the transaction main body and the transaction main body counter party.
In the registration authorization method, further comprising: the data sharing direction registration authorization module submits a service signature certificate application, and the block chain node submits a block signature certificate application to the registration authorization module; the block chain node can proxy and forward identity authentication, registration authorization and service signature certificate application of a data sharing party; the registration authorization module adopts a PKI/CA technical system to perform registration authorization management on the block chain nodes and the data sharing party, and sends corresponding digital certificates based on public and private key pairs to the block chain nodes and the data sharing party, wherein block signature digital certificates used for block digital signatures are sent to the block chain nodes, service signature certificates used for transaction record data signatures are sent to the data sharing party, and the schematic diagram is shown in a service registration and node registration part in fig. 1.
In the data upload confirmation method, the method further comprises: the data share all directions block chain nodes upload transaction metadata records, each note record is stamped with a timestamp and signed by a service signature certificate, and the transaction metadata information comprises three parts of information: transaction body information, service metadata information and transaction credential information; desensitizing personal or business information in the transaction subject information, including: type (personal/business/other), name Hash value, certificate type, certificate number Hash value, collateral information type (none/other), collateral information Hash value; considering the safety of the shared service of each party, the original transaction data of the service is not directly stored in the block record, but the basic transaction information is extracted from the service transaction, and the transaction record is divided into two data, namely a transaction main body and a transaction main body counter party, which are called as service metadata, wherein the service metadata information comprises: the service type (invested/consumed/other), the service code, the transaction type (borrowed/credited/received/paid/other), the transaction code, the currency type (RMB/other), the amount, the transaction status (executed/completed/confirmed/other), the transaction time, the type of the attached data (none/message/file/other), the Hash value of the attached data, and the structure of the transaction metadata record are schematically shown in fig. 2.
In the data upload confirmation method, the method further comprises: other information of a transaction main body, original transaction records of a service or accessory data generated in the service transaction are uploaded through a storage service module, the data can be used as accessory data of service metadata, the service metadata only stores a hash value of the accessory data, the accessory data information can be stored after being uniformly encrypted through the storage module according to service requirements, and the accessory data information also needs to be signed by a timestamp and a service signature certificate.
In the data upload confirmation method, the method further comprises: the data service module sends the transaction metadata on the block chain links to the transaction main body, after the transaction main body receives the transaction metadata information, on one hand, the transaction information related to the transaction main body and sent by the data sharing party can be confirmed, the transaction data can be guaranteed to be real and effective, on the other hand, records in the block chain links can be inquired in real time according to the received transaction metadata information, and the block chain information inquiry schematic diagram of the transaction main body is shown in fig. 4.
In the block chain accounting method, further comprising: the block information comprises two parts, namely a block head and a block body, wherein the block head comprises information: the method comprises the following steps of firstly, recording the version number, the block ID, the record number, the Hash value of the previous block, the Merkel root of the block, a timestamp, a random number, a custom area and a block signature; the block body comprises a plurality of transaction metadata records, and the block chain structure is formed as shown in FIG. 3.
In the step of block chain accounting, further comprising: in view of the requirement consistency of distributed accounting on time sources, information stored in attached data can be used as a transaction evidence, the correct consistency of the time sources is very critical, the whole network time is uniformly managed through a timestamp service module, each block chain node is regularly synchronized with time source service, and the timestamp service module provides timestamp and time synchronization service for block chain link points.
In the data query method, the method further comprises: because the blocks formed when each party uploads data are different, the metadata processing cannot reflect the specific service information of each party, and on the other hand, because the desensitization processing is performed on the transaction main body information recorded in the block chain, the information of the transaction main body cannot be reflected under the condition that the original identity information of the transaction main body is not obtained. However, under the condition of obtaining the authorization of the data sharing party and the transaction body, the obtained data result can provide reference for the parties to develop specific business by analyzing and integrating the data, the schematic diagram of the transaction body loan wind control evaluation is shown in fig. 6, and the schematic diagram of the transaction body credit evaluation is shown in fig. 7.
The certificate issuing method further comprises the following steps: the method can provide related transaction credentials for an information sharing party, a transaction body and a transaction body counter party according to the following process steps, and specifically comprises the following steps: 1. inquiring the block chain metadata transaction records according to the transaction type and the transaction codes, and judging whether even number of metadata transaction records exist at the same time; 2. if the transaction exists, judging whether the transaction is a mutual transaction counterparty, and if the transaction types are mutually loan or transaction, the fund access quantity is consistent; 3. if the transaction counter-party is the transaction counter-party, original transaction information is inquired from the data storage service; 4. and decrypting the original transaction information, calculating a hash value, and if the hash value is consistent with the hash value recorded in the blockchain record, determining that the original transaction information is not tampered, and providing the original transaction as a transaction credential, wherein a schematic diagram of a transaction credential presentation flow is shown in fig. 5.
In the method, among others, further comprising: the system comprises a registration authorization module, a data service module, a storage service module and a timestamp service module, wherein each service module defines a uniform standard interface, and a service provider provides actual service according to the standard interface.
According to another aspect of the present invention, a device for sharing transaction metadata by multiple parties based on a block chain is provided, wherein block chain accounting of the transaction metadata is supported, and further divided into a block chain accounting master node and a block chain accounting slave node, wherein the block chain accounting master node participates in accounting and generates a block account book, and transmits a transaction and a block to an adjacent node; the block chain accounting slave node does not participate in accounting, only transmits transactions and blocks to adjacent nodes, a plurality of devices form a block chain link point network, the device can accept service registration of a data sharing party, upload metadata and a data query request, and can also initiate node registration, data access, data storage and a timestamp and time synchronization request to each service module, and the working diagram of the device is shown in figure 1.
In the block chain accounting process, the method further comprises the following steps: each information sharing party communicates with the block link points through terminal equipment or an API (application program interface) interface and uploads transaction metadata records, each note record contains a timestamp and a service signature certificate signature, the block link points pack the confirmed transaction metadata into blocks, block heads contain timestamps and block signature certificate signatures, the confirmed blocks are spread through a consensus algorithm, and finally a set of distributed shared transaction metadata block chain account book is formed in the whole network.
In the process of accepting the request of the data sharing party, the device further comprises:
a service registration module: providing a service registration interface for each party sharing data, and forwarding a service authentication request to a registration authorization service module;
the data uploading module: and providing metadata uploading for each party sharing data, and providing uploading modes such as a terminal program or an interface API (application program interface) and the like according to the needs of the data sharing party. The uploaded metadata is directly sent to an adjacent node after node verification;
a data query module: the data inquiry function is provided for each party sharing data, the party of transaction main body and the data service module.
In the process that the device initiates the service request to each service module, the method further comprises the following steps:
node registration request: initiating a block link point registration request to a registration authorization module, applying for a block signature digital certificate, and also applying for a service signature certificate of a data sharing party by proxy forwarding;
and (3) data access request: initiating a data access request to a data service module;
data storage request: initiating a data storage request to a storage service module;
timestamp service and time synchronization request: and initiating a timestamp service and time synchronization request to a timestamp service module.
According to another aspect of the present invention, there is provided a block chain-based multi-party shared transaction metadata system, comprising the above block chain-based multi-party shared transaction metadata apparatus, and a series of distributed service modules, where the distributed service modules define a unified standard interface, and are implemented by a service provider to implement interface services, and the distributed service modules include a registration authorization service module, a data service module, a storage service module, and a timestamp service module, where:
a registration authorization module: providing identity authentication and authorization service for the data sharing party, the block chain link points and the transaction main body;
a data service module: obtaining unconfirmed transaction metadata from the block link points, and sending the unconfirmed transaction metadata to a transaction main body for transaction metadata confirmation; various data models are built in, and customized data services are provided;
a storage service module: storing a transaction main body and an original transaction record or accessory data generated in a business transaction, requiring encryption storage, and issuing a transaction certificate to each transaction party in certificate issuing;
the timestamp service module: the system is characterized in that a timestamp service is provided for the block chain nodes, a time synchronization service is provided for the block chain nodes, various strategies are arranged in the system to support time sources of various time zones, and the working diagram of the system is shown in figure 1.
In addition, in order to further understand the present invention, fig. 8 is a flowchart illustrating various links involved in the above embodiments of the present invention; as shown in fig. 8, the above embodiments of the present invention mainly relate to an information sharing party, a block link point, a transaction party, a transaction counter party, and a service module; in steps 1, 2, 3, 4, registering with a registration authorization module; step 5, transmitting transaction metadata to the block link points for information sharing; step 6, uploading the auxiliary data to a data storage module; step 7, step 8, step 9 and step 10 are that the data service module inquires the transaction metadata from the block chain nodes, and sends the transaction metadata to the transaction party and the transaction counter-party; step 11, accounting is carried out on the block link points; step 12, 13, inquiring transaction metadata records in the block chain for the data sharing party; step 14, 15, inquiring transaction metadata records in the block chain for a transaction party; step 16, 17, inquiring transaction metadata records in the blockchain for the transaction counter party; step 18, 19 is the data sharing direction data service module to inquire the customized data; step 20, 21, initiating a time synchronization query to a timestamp service module for a block chain node; steps 22, 23, 24 and 25 are used for inquiring the transaction certificate for the data sharing party; steps 26, 27, 28, 29 inquire the transaction certificate for the transaction party; steps 30, 31, 32, 33 query the transaction credentials for the transaction counter-party.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention 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 invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
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 embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
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 (17)
1. A method for sharing transaction metadata information among multiple financial asset parties based on a block chain is characterized in that transaction metadata are extracted from transaction data of each financial asset party and written into the block chain to form a distributed shared transaction metadata block chain account book information record, and the method comprises the following steps:
step one, registration and authorization: the financial asset transaction sharing party, the block chain node and the financial asset transaction main body perform identity authentication and authorization through the registration authorization service module, apply for a digital signature certificate based on a PKI/CA system and are used for transaction records and block encryption signatures;
step two, data uploading confirmation: the financial asset transaction sharing party extracts transaction metadata subjected to desensitization treatment from original financial asset transaction data, uploads the signed financial asset transaction metadata to a block chain node, and the financial asset transaction main body confirms the transaction metadata on the block chain node;
step three, accounting of the block chain: each block link point packs the confirmed financial asset transaction metadata into blocks, the confirmed blocks are transmitted through a consensus algorithm, a set of block chain account book information record of the shared financial asset transaction metadata is finally formed in the whole network, and a timestamp service module provides block chain accounting timestamp and time synchronization service;
step four, data query: the data inquiry party can inquire the data uploaded by other financial asset data sharing parties in the block chain account book after being authorized, and the data service module inquires the customized data;
step five, issuing the certificate: the financial asset original transaction and the attached data are encrypted and stored through the storage service module, and related financial asset transaction credentials are provided for the financial asset transaction sharing party, the financial asset transaction main body and the counter party of the financial asset transaction main body.
2. The method of claim 1, wherein the step of registering authorization further comprises: the financial asset data sharing direction registration authorization service module submits a business signature certificate application, and the block chain node submits a block signature certificate application to the registration authorization service module; the block chain nodes can proxy and forward identity authentication, registration authorization and service signature certificate application of the financial asset data sharing party; the registration authorization service module adopts a PKI/CA technical system to perform registration authorization management on the block link points and the financial asset data sharing party and sends digital certificates corresponding to public and private key pairs to the block link points and the financial asset data sharing party, wherein the block signature digital certificates are sent to the block link points for block digital signature, and the business signature certificates are sent to the financial asset data sharing party for transaction record data signature.
3. The method of claim 1, wherein the data upload confirmation step further comprises: financial asset data share all directions block chain link point upload financial asset transaction metadata information record, every note record is stamped the time stamp and is signed through the service signature certificate, financial asset transaction metadata information includes the triplex: financial asset transaction subject information, financial asset business metadata information, financial asset transaction credential information; desensitizing personal or business information in the financial asset transaction subject information, comprising: the certificate comprises a certificate type, a name Hash value, a certificate type, a certificate number Hash value, an accessory information type and an accessory information Hash value; in consideration of the safety of business information shared by financial asset parties, the original transaction data of the financial asset business is not directly stored in a block record, but transaction basic information is extracted from the financial asset business transaction, the transaction data is divided into two data of a transaction main body and a transaction main body counterparty, namely financial asset business metadata, and the financial asset business metadata information comprises: financial asset service, service code, financial asset transaction type, financial asset transaction code, currency type, amount, financial asset transaction status, financial asset transaction time, financial asset attached data type, attached data Hash value; the financial asset transaction credential information ensures that the financial asset transaction metadata information record is not falsifiable and traceable, including: timestamp, record Hash, signature value.
4. The method of claim 1, wherein the data upload confirmation step further comprises: other information of a financial asset transaction main body, original transaction records of financial asset business or accessory data generated in financial asset business transaction are uploaded through a storage service module, the data serve as accessory data of financial asset business metadata, the financial asset business metadata only store a hash value of the accessory data, the accessory data information is stored after being uniformly encrypted through a storage module, and data of the storage module needs to be signed by a timestamp and a business signature certificate.
5. The method of claim 1, wherein the data upload confirmation step further comprises: the financial asset data service module sends financial asset transaction metadata on the block chain nodes to the transaction main body, and after the financial asset transaction main body receives the transaction metadata information, the financial asset transaction main body confirms the financial asset transaction information related to the financial asset transaction main body and sent by the data sharing party on one hand to ensure that the financial asset transaction data is real and effective, and on the other hand, inquires records in the block chain links according to the received financial asset transaction metadata information.
6. The method of claim 1, wherein the step of block chain accounting further comprises: the block information comprises a block head and a block body, wherein the block head comprises the following information: the method comprises the following steps of firstly, recording the version number, the block ID, the record number, the Hash value of the previous block, the Merkel root of the block, a timestamp, a random number, a custom area and a block signature; the block contains a plurality of financial asset transaction metadata records.
7. The method of claim 1, wherein the step of block chain accounting further comprises: in view of the requirement consistency of distributed accounting on time sources, information stored in attached data can be used as a transaction evidence, the correct consistency of the time sources is very critical, the whole network time is uniformly managed through a timestamp service module, each block chain node is regularly synchronized with time source service, and the timestamp service module provides timestamp and time synchronization service for block chain link points.
8. The method of claim 1, wherein the data query step further comprises: the data information of each party of the financial asset can not be reflected due to different blocks formed when each party uploads data and the metadata processing is carried out, so that the safety of the information shared by each party on the chain is ensured, on the other hand, because the desensitization processing is carried out on the information of the transaction main body recorded in the block chain, the information of the transaction main body can not be reflected under the condition that the original identity information of the transaction main body is not obtained, the safety of the information shared by each party is further ensured, under the condition that the authorization of the data sharing party and the transaction main body is obtained, the data information of each party of the financial asset is subjected to correlation analysis comprehensive query according to the original information of the transaction party, and the obtained data result can provide reference for each party when the specific service is carried.
9. The method according to claim 1, wherein the step of issuing a certificate specifically comprises: the method can provide related financial asset transaction credentials for an information sharing party, a financial asset transaction main body and a financial asset transaction main body counter party according to the following process steps, and specifically comprises the following steps: firstly, inquiring a block chain metadata transaction record according to a transaction type and a transaction code, and judging whether even metadata transaction records exist at the same time; if the transaction exists, judging whether the transaction types are mutually transaction counter-parties or not, wherein the transaction types are mutually buyers or sellers, and the fund in-out quantity is consistent; (III) if the transaction counter-party is the transaction counter-party, inquiring original transaction information from the data storage service; and (IV) decrypting the original transaction information, calculating a hash value, and if the hash value is consistent with the hash value recorded in the blockchain record, determining that the original transaction information is not tampered, and providing the original transaction as a transaction credential.
10. The method of claim 1, further comprising: the system comprises a registration authorization module, a data service module, a storage service module and a timestamp service module, wherein each service module defines a uniform standard interface, and a service provider provides actual service according to the standard interface.
11. A device for sharing transaction metadata information among multiple financial asset parties based on a block chain is used for block chain accounting of financial asset transaction metadata and forwarding requests of all financial asset data sharing parties to service modules by proxy; the block chain accounting slave node does not participate in accounting, only transmits transactions and blocks to adjacent nodes, and the plurality of devices form a block chain link point network; the device can accept business registration, data uploading and data query requests of financial asset data sharing parties, and can also initiate node registration, certificate application, data access, data storage and timestamp and time synchronization requests to each service module.
12. The apparatus of claim 11, wherein in the block chain accounting process, further comprising: each financial asset information sharing party communicates with the block link points through terminal equipment or an API (application program interface) interface and uploads transaction metadata records, each note record contains a timestamp and a service signature certificate signature, the block link points pack the confirmed financial asset transaction metadata into blocks, block heads contain timestamps and block signature certificate signatures, the confirmed blocks are spread through a consensus algorithm, and a set of financial asset sharing transaction metadata block chain account book records are finally formed in the whole network.
13. The apparatus of claim 11, wherein in the acceptance of the financial asset data sharer request by the apparatus, further comprising: business registration, namely providing business registration service interfaces for all parties sharing data of the financial assets and forwarding a business authentication request to a registration authorization module; the method comprises the steps of uploading metadata, providing metadata uploading for each party of financial asset sharing data, providing a terminal program or an interface API (application program interface) according to the needs of a data sharing party, and broadcasting the uploaded metadata to adjacent nodes after node verification; and data query is performed to provide data query functions for financial asset sharing data parties, financial asset transaction main parties and the data service module.
14. The apparatus according to claim 11, wherein in the process of the apparatus initiating the service request to each service module, the apparatus further comprises: the node registration, namely initiating a block link point registration request to a registration authorization module, applying for a block signature digital certificate, and also applying for a service signature certificate of a financial asset data sharing party by proxy forwarding; data access, namely initiating a data access request to a data service module; data storage, namely initiating a data storage request to a storage service module; time synchronization: and initiating a timestamp service and time synchronization request to a timestamp service module.
15. A blockchain-based financial asset multiparty shared transaction metadata information system, comprising the apparatus of any one of claims 11 to 14, and a series of distributed service modules, the distributed service modules defining a unified standard interface, the distributed service modules implementing interface services by service providers, the distributed service modules including a registration authorization service module, a data service module, a storage service module, and a timestamp service module, wherein: the registration authorization service module: providing identity authentication and authorization services for the financial asset data sharing party, the block chain node and the financial asset transaction main body; a data service module: obtaining unconfirmed financial asset transaction metadata from the block link points, sending the unconfirmed financial asset transaction metadata to a financial asset transaction main body for transaction metadata confirmation, and providing customized data service by internally arranging various data models; a storage service module: storing a financial asset transaction main body and a financial asset original transaction record or accessory data generated in financial asset business transaction, requiring encryption storage, and issuing a transaction certificate to each financial asset transaction party in certificate issuing; the timestamp service module: the method provides time stamp service for the block chain nodes, provides time synchronization service for the block chain nodes, and is internally provided with various strategies to support time sources of various time zones.
16. A computer-readable storage medium, on which a computer program/instructions are stored, characterized in that the computer program/instructions, when executed by a processor, implement the steps of the method according to claims 1-10.
17. A computer program product comprising computer programs/instructions, characterized in that the computer programs/instructions, when executed by a processor, implement the steps of the method according to claims 1-10.
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- 2017-03-31 CN CN201710210973.1A patent/CN107180350B/en active Active
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| CN113535663A (en) * | 2021-08-09 | 2021-10-22 | 恒安嘉新（北京）科技股份公司 | Data sharing processing method, device, equipment and medium based on block chain |
| CN116860882A (en) * | 2023-09-05 | 2023-10-10 | 石家庄学院 | Cloud storage resource management and control method and system based on blockchain |
| CN116860882B (en) * | 2023-09-05 | 2023-12-26 | 石家庄学院 | Cloud storage resource management and control method and system based on blockchain |
Also Published As
| Publication number | Publication date |
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| CN113111388A (en) | 2021-07-13 |
| CN113435994A (en) | 2021-09-24 |
| CN107180350A (en) | 2017-09-19 |
| CN107180350B (en) | 2021-03-26 |
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