CN111091465A - Block chain-based bond underwriting group member information verification method and device - Google Patents
Block chain-based bond underwriting group member information verification method and device Download PDFInfo
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Abstract
The invention discloses a method and a device for verifying bond earning and selling group member information based on a block chain, wherein the method comprises the following steps: acquiring underwriter information of one or more underwriters for currently underwriting target bonds; searching for the earning group information of the target bond stored on the block chain system, wherein the earning group information of the target bond comprises: member information of each member of the underwriting group in the underwriting group of the target bond; and verifying whether each underwriter for currently procuring the target bond is a member of the underwriting group of the target bond or not according to the information of the underwriter of each underwriter for currently procuring the target bond and the information of the members of each underwriting group in the underwriting group of the target bond. The invention stores the information of the underwriting group of the bond based on the block chain system, so that the information of the underwriting group of the bond has non-tamper property, and the bond system can automatically identify whether the underwriter who buys the bond is the member of the underwriting group of the bond, thereby avoiding a large amount of manual operation and improving the efficiency of bond buying.
Description
Technical Field
The invention relates to the technical field of block chains, in particular to a method and a device for verifying bond earning and selling group member information based on a block chain.
Background
This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.
The bond is a valuable paper which is made by debtors of government, enterprise and bank, etc. to raise funds, issued according to legal procedure and committed to debtors to pay money on a specified date. Participants in the bond market mainly include: the distributor, the underwriter and the direct investor are three; wherein the issuer refers to a subject (e.g., a country, government, or bank) who issues the bonds and assumes responsibility for the bond due redemption; an underwriter refers to a subject (e.g., large commercial bank, securities company, etc.) who helps an issuer complete issuance, subscription, and distribution of bonds to other settlement members; the direct investor refers to a subject (e.g., bank, fund, insurance, dealer, etc.) who can participate in previous bids and buys.
For a security with a particularly large issue size, a underwriter is often reluctant to bear the issue risk alone, and a underwriting group is organized. In the existing bond system, the earning group of the bond is established by a contract under line, that is, each earner signs an earning group agreement, and group authentication is achieved after authentication takes effect. When each underwriter makes a commitment for a bond through the bond system, it is necessary to identify whether each underwriter is a member of the underwriting group of the bond.
At present, in the prior art, whether each underwriter is a member of an underwriting group of the bond is mainly identified through ① manual identification whether each underwriter is a member of the underwriting group of the bond, ② recording information of the underwriting group of the bond into a bond system in advance, and the bond system automatically identifies whether the underwriter who currently applies for the bond is a member of the underwriting group of the bond.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a block chain-based method for verifying information of members of a bond earning and selling group, which is used for solving the technical problem that a large amount of manual operation is involved when an existing bond system verifies whether an earner who currently subscribes to bond is a member of the earning and selling group of the bond, and comprises the following steps: acquiring underwriter information of one or more underwriters for currently underwriting target bonds; searching for the earning group information of the target bond stored on the block chain system, wherein the earning group information of the target bond comprises: member information of each member of the underwriting group in the underwriting group of the target bond; and verifying whether each underwriter for currently procuring the target bond is a member of the underwriting group of the target bond or not according to the information of the underwriter of each underwriter for currently procuring the target bond and the information of the members of each underwriting group in the underwriting group of the target bond.
The embodiment of the invention also provides a device for verifying the member information of the bond earning and selling group based on the blockchain, which is used for solving the technical problem that a great amount of manual operation is involved when the existing bond system verifies whether the earner currently applying to purchase bonds is a member of the earning and selling group of the bonds, and the device comprises: the information acquisition module is used for acquiring underwriter information of one or more underwriters of the current procurement target bond; the block chain searching module is used for searching for the reimbursement group information of the target bond stored on the block chain system, wherein the reimbursement group information of the target bond comprises: member information of each member of the underwriting group in the underwriting group of the target bond; and the information verification module is used for verifying whether each underwriter of the current procurement target bond is a member of the underwriting group of the target bond or not according to the underwriter information of each underwriter of the current procurement target bond and the member information of each member of the underwriting group of the target bond.
The embodiment of the invention also provides a computer device, which is used for solving the technical problem that a large amount of manual operations are involved when the existing bond system verifies whether an underwriter who currently applies for purchasing bonds is a member of an underwriting group of the bonds, and the computer device comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the bond underwriting group member information verification method based on the block chain when executing the computer program.
The embodiment of the invention also provides a computer readable storage medium, which is used for solving the technical problem that a great amount of manual operation is involved when the existing bond system verifies whether an underwriter who currently applies for purchasing bonds is a member of an underwriting group of the bonds, and the computer readable storage medium stores a computer program for executing the block chain-based bond underwriting group member information verification method.
In the embodiment of the invention, when the bond fitting operation of each underwriter is detected, the information of the underwriters of one or more underwriters for fitting the target bonds is acquired, the information of the underwriting groups of the target bonds stored on the block chain system is searched, and the information of the underwriting groups of the target bonds stored on the block chain system contains the member information of each member of the underwriting groups of the target bonds, so that whether each underwriting group of the target bonds is the member of the underwriting groups of the target bonds can be verified according to the information of the underwriting groups of each underwriting provider for fitting the target bonds and the member information of each member of the underwriting groups of the target bonds.
According to the embodiment of the invention, the earning and selling group information of the bond is stored based on the block chain system, so that the earning and selling group information of the bond has non-tamper property, and the bond system can automatically identify whether the earning and selling merchant who buys the bond is the earning and selling group member of the bond, thereby avoiding a large amount of manual operation and improving the bond buyout efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
fig. 1 is a flowchart of a method for verifying bond earning and selling group member information based on a block chain according to an embodiment of the present invention;
FIG. 2 is a flow chart of underwriter registration according to an embodiment of the present invention;
FIG. 3 is a flow chart of the establishment of an underwriting team according to an embodiment of the present invention;
fig. 4 is a flowchart of an online signing process of an underwriter according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a device for verifying bond earning and selling group member information based on a block chain according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
In the description of the present specification, the terms "comprising," "including," "having," "containing," and the like are used in an open-ended fashion, i.e., to mean including, but not limited to. Reference to the description of the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The sequence of steps involved in the embodiments is for illustrative purposes to illustrate the implementation of the present application, and the sequence of steps is not limited and can be adjusted as needed.
The embodiment of the invention provides a block chain-based bond earning and selling group member information verification method, which can be applied to but not limited to a bond system.
Fig. 1 is a flowchart of a method for verifying bond earning group member information based on a block chain according to an embodiment of the present invention, and as shown in fig. 1, the method may include the following steps:
s101, acquiring underwriter information of one or more underwriters currently applying for the target bond.
It should be noted that, in the embodiment of the present invention, the target bond may be a bond issued by a plurality of underwriters, and generally refers to a bond with an extremely large issue volume, such as national bond or bulk stock. Because of the particularly large number of securities issued, an underwriter is generally reluctant to bear the risk of issuance, and thus, an underwriter group is organized to underwrite issuance by a plurality of underwriters together, thereby reducing the risk that each underwriter is subjected to individually.
It should be noted that the above-mentioned S101 may be a step triggered by the bond system when detecting that the business system of any underwriter performs the bond buying operation through the bond system, and since the bond system needs to verify whether the underwriter who currently purchases the bond is a member of the underwriting group of the bond when the business system of the underwriter buys the bond, if the bond buying operation of one or more underwriters is detected at the time of bond issuance, the information of the underwriter of each underwriter who currently purchases the bond is acquired through S101, and optionally, the information of the underwriter may include but is not lower than the name of the underwriter.
S102, searching for the earning and selling group information of the target bond stored on the block chain system, wherein the earning and selling group information of the target bond comprises: member information of each member of the underwriting group in the underwriting group of the target bond.
It should be noted that the member information of each underwriting community member may include, but is not limited to, identification information of each underwriting community member, for example, an underwriter name of an underwriter who is an underwriting community member.
It should be noted that, in the embodiment of the present invention, the blockchain system may be a blockchain system constructed independently from each underwriter, or may be a blockchain system constructed by each underwriter as a blockchain link point; if the data is the former, each underwriter can access the block chain system to acquire the data stored on the block chain system; if the latter, the data on the blockchain system is shared on each underwriter node. The embodiment of the invention stores the earning group information of the target bond in the block chain system in advance, and the data on the block chain system has non-tamper property, so that the earning group information of the target bond is stored by the block chain system, and the risk of tampering the earning group information can be prevented.
As an alternative implementation manner, the earning group information of the target bond may be stored on the blockchain system in a form of a key-value pair, where the key is the identification information of the target bond, and the value is the member information of each earning member. Therefore, according to the identification information of the target bond, the member information of all members of the underwriting group in the underwriting group of the target bond can be searched from the block chain system.
Optionally, when an underwriting group of a certain bond is established, the embodiment of the present invention may implement online subscription of each underwriter through the block chain system, and store the underwriting group information of the bond to the block chain system through the online subscription, so that before searching for the underwriting group information of a target bond stored on the block chain system, the method for verifying the membership information of the underwriting group of the bond based on the block chain provided by the embodiment of the present invention may further include the following steps: and establishing an earial group of the target bond, and generating earial group information of the target bond, wherein the earial group of the target bond comprises: one or more underwriters; and storing the underwriting group information of the target bond to the block chain system.
When the earning group of the target bond is established and the earning group information of the target bond is generated, the method can be realized through the following steps: acquiring one or more selected underwriters, and sending a construction request to each selected underwriter through a block chain system, wherein the construction request is used for constructing an underwriting group of the target bond; receiving response results returned by each underwriter through the blockchain system, wherein the response results comprise: a first response result and a second response result, wherein the first response result represents the underwriting groups which the respective underwriters agree to join the target bond, and the second response result represents the underwriting groups which the respective underwriters refuse to join the target bond; when all the response results returned by the underwriters are the first response results, establishing an underwriting group of the target bond and generating underwriting group information of the target bond; and under the condition that all the response results returned by the underwriters are not the first response results, acquiring one or more reselected underwriters, and sending the assembly request to the selected underwriters through the block chain system.
Optionally, after the earning group of the target bond is established and the earning group information of the target bond is generated, the bond earning group member information verification method based on the block chain according to the embodiment of the present invention may further include the following steps: generating a construction notification message of the target bond; and sending the building notification message of the target bond to each underwriter through a block chain system.
As an alternative embodiment, the underwriting group information of the target bond may be stored to the blockchain system by: acquiring CA certificates of various underwriters in the underwriting group information of the target bond; verifying the CA certificate of each underwriter; and under the condition that the CA certificate of each underwriter passes verification, storing the information of the underwriting group of the target bond to the block chain system in a key-value pair mode, wherein the key is the identification information of the target bond, and the value is the member information of each underwriting member.
Optionally, the CA certificates of the respective underwriters in the underwriting group information of the target bonds are acquired by: receiving a registration request of each underwriter, wherein the registration request comprises underwriter information of each underwriter; according to the registration request of each underwriter, the underwriter information of each underwriter is sent to a CA server; the receiving CA server returns CA certificates for respective underwriters.
S103, verifying whether each underwriter of the current procurement target bond is a member of the underwriting group of the target bond or not according to the information of the underwriter of each underwriter of the current procurement target bond and the member information of each member of the underwriting group of the target bond.
It should be noted that, in the embodiment of the present invention, the member information of each underwriting group member in the underwriting group of the target bond is stored in the block chain system in advance, so that after acquiring the underwriter information of each underwriter of the current procurement target bond, whether each underwriter of the current procurement target bond is the underwriting group member of the target bond can be verified according to the member information of each underwriting group member stored in the block chain system.
As can be seen from the above, in the method for verifying member information of a debt underwriting group based on a block chain, when a debt applying operation of each underwriter is detected, the information of the underwriters of one or more underwriters currently applying a target debt is obtained, the information of the underwriting group of the target debt stored on the block chain system is searched, and the information of the underwriting group of the target debt stored on the block chain system includes the member information of each member of the underwriting group of the target debt, so that whether each underwriter currently applying the target debt is a member of the underwriting group of the target debt can be verified according to the information of the underwriting group of each underwriter currently applying the target debt and the member information of each member of the underwriting group of the target debt.
According to the verification method for the information of the members of the bond earning and selling groups based on the block chain, the earning and selling group information of the bonds is stored based on the block chain system, so that the earning and selling group information of the bonds has non-tamperability, the bond system can automatically identify whether the earner who currently applies for purchasing the bonds is the member of the earning and selling group of the bonds, a large amount of manual operation is avoided, and the efficiency of purchasing the bonds is improved.
According to the verification method for the member information of the bond underwriting group based on the block chain, as an optional implementation manner, the embodiment of the invention can build and develop an application system which comprises an underwriter registration module, an underwriting group building module, an underwriter signing module, a bond procurement module and a block chain module based on a Spring Boot framework, and the application system can exist independently of an existing bond system and can also be used as a part of the existing bond system. The following describes each module separately:
① underwriter register module for registering information of each underwriter, the registered information includes but is not limited to underwriter ID, role type (including but not limited to underwriter manager, underwriter issuing book operator or underwriter project undertaking operator), unified social credit code, underwriter name, contact or address, etc., the underwriter ID and the underwriter name can be used to apply for certificate to CA server, the certificate returned from CA server is stored in file system (file server), the underwriter at registration time, based on the underwriter name and underwriter ID, applies for CA certificate to CA server, after CA server finds out the identity of applicant, assigns a public key to applicant, and the public key is combined with the applicant identity information to form a certificate to be returned to applicant after signing.
Fig. 2 is a process diagram of underwriter registration according to an embodiment of the present invention, and as shown in fig. 2, an underwriter ID and an underwriter name that uniquely identify each underwriter are sent to a CA server, and the CA server assigns a public key to each underwriter, binds the public key with identity information of each underwriter to generate a certificate, and returns the certificate.
② underwriting group building module, used to build underwriting group of bond, before the bond starts to commit, needs bookkeeping manager to select underwriting company in the system, completes the operation of building underwriting group, the underwriting group building module finds out the corresponding CA certificate of each underwriting company according to each underwriting company, calls block chain access layer to complete the information chaining of underwriting group, the block chain system in uplink checks the validity of the CA certificate of each underwriting company, after the checking is passed, the information of underwriting group is pushed to the block chain system storage in a key-value-pair mode (for example, the key with bond ID as key-value pair and the value with underwriting name as key-value pair), optionally, after the bookkeeping manager completes the underwriting group building, the system can automatically send notification to the underwriting group members, fig. 3 is a underwriting group building flow chart provided in the embodiment of the invention, as shown in fig. 3, after receiving the request of underwriting group building, the system stores the information of underwriting group in the CA, and checks the information of underwriting group through the CA.
When the CA certificate applies for, the CA server distributes a public key to an applicant (an underwriter) and binds the public key and the identity information of the applicant together to form the certificate. If the authenticity of a certificate is to be verified, the public key in the certificate is used for verifying the certificate, and error information is returned when the verification fails.
③ underwriter contract module for each underwriter to realize on-line contract, after receiving the mail notification of underwriting group, underwriter logs in the system to carry out contract authentication, if underwriter can choose to agree with group or not agree with group, if all underwriters agree to join into underwriting group, it shows that the bond underwriting group is successfully established, the bond enters into the next circulation state, if some underwriter disagree group, bookkeeping manager will receive the notification information, then it can re-edit the group authentication process, fig. 4 is a process diagram of underwriter on-line contract provided in the invention.
④ a bond procurement module for each underwriter to perform bond procurement operation, when the bond begins to procure, the member of the underwriting group logs in the system to conduct bond procurement operation, the system compares the procurement underwriter with the information of the underwriting group stored in the block chain to judge whether the underwriting group is a member of the underwriting group, if so, the procurement step is continued, if not, the procurement operation is refused.
Optionally, in the embodiment of the present invention, the Spring Boot is utilized to encapsulate Fabric Java Sdk into a Dubbo micro service, which is decoupled, facilitates external invocation, and provides a function of interaction between a Fabric network and an application layer.
Based on the same inventive concept, the embodiment of the present invention further provides a device for verifying member information of a bond reimbursement group based on a block chain, as described in the following embodiments. Because the principle of solving the problems of the embodiment of the device is similar to the verification method of the bond underwriting group member information based on the block chain, the implementation of the embodiment of the device can refer to the implementation of the method, and repeated parts are not described again.
Fig. 5 is a schematic diagram of a device for verifying bond earning and selling group member information based on a block chain according to an embodiment of the present invention, and as shown in fig. 5, the device includes: an information acquisition module 51, a block chain lookup module 52 and an information verification module 53.
The information acquisition module 51 is configured to acquire underwriter information of one or more underwriters who currently underwrite target bonds; the block chain searching module 52 is configured to search for the reimbursement group information of the target bonds stored on the block chain system, where the reimbursement group information of the target bonds includes: member information of each member of the underwriting group in the underwriting group of the target bond; and the information verification module 53 is configured to verify whether each underwriter of the currently applied target bond is a member of the underwriting group of the target bond according to the information of the underwriter of each underwriter of the currently applied target bond and the member information of each member of the underwriting group of the target bond.
As can be seen from the above, the verification apparatus for information of members of a bond underwriting group based on a block chain according to the embodiment of the present invention obtains information of underwriters of each underwriter of a current procurement target bond through the information obtaining module 51; searching for the underwriting group information of the target bonds stored on the block chain system through the block chain searching module 52; and verifying whether each underwriter currently applying the target bond is a member of the underwriting group of the target bond or not through the information verification module 53 according to the information of the underwriter of each underwriter currently applying the target bond and the member information of each member of the underwriting group of the target bond.
According to the verification device for the member information of the bond earning and selling group based on the block chain, which is provided by the embodiment of the invention, the earning and selling group information of the bond is stored based on the block chain system, so that the earning and selling group information of the bond has non-tamperproof property, and the bond system can automatically identify whether the earner who currently applies to purchase the bond is the member of the earning and selling group of the bond, thereby avoiding a large amount of manual operation and improving the efficiency of bond purchase.
In an optional embodiment, the device for verifying member information of a bond reimbursement group based on a block chain according to an embodiment of the present invention may further include: the earning group building module 54 is configured to build an earning group of the target bond, and generate earning group information of the target bond, where the earning group of the target bond includes: one or more underwriters; and the block chain storage module 55 is used for storing the underwriting group information of the target bond to the block chain system.
Optionally, the underwriting group building module 54 is further configured to obtain one or more selected underwriters, send building requests to the selected respective underwriters through the block chain system, receive response results returned by the respective underwriters through the block chain system, build a underwriting group of the target bond and generate underwriting group information of the target bond when all the response results returned by the respective underwriters are first response results, where the building requests are used for building the underwriting group of the target bond; the response result includes: a first response result and a second response result, the first response result characterizing the underwriting parties that the respective underwriter agrees to join the target bond, and the second response result characterizing the underwriting parties that the respective underwriter refuses to join the target bond.
Further, when all response results returned by the respective underwriters are not the first response results, the underwriting group building module 54 is further configured to obtain one or more newly selected underwriters, and send a building request to the selected respective underwriters through the blockchain system.
Optionally, the block chain storage module 55 is further configured to acquire a CA certificate of each underwriter in the underwriting group information of the target bond, check the CA certificate of each underwriter, and store the underwriting group information of the target bond to the block chain system in a form of a key-value pair when the CA certificate of each underwriter passes the check, where the key is identification information of the target bond and the value is member information of each underwriter.
Further, the blockchain storage module 55 is further configured to receive a registration request of each underwriter, send underwriter information of each underwriter to the CA server according to the registration request of each underwriter, and receive a CA certificate returned by the CA server to each underwriter, where the registration request includes the underwriter information of each underwriter.
In an optional embodiment, the device for verifying member information of a bond reimbursement group based on a block chain according to an embodiment of the present invention may further include: and the message notification module 56 is used for generating a build notification message of the target bond and sending the build notification message of the target bond to each underwriter through the blockchain system.
The embodiment of the invention also provides computer equipment for solving the technical problem that a large amount of manual operation is involved when the existing bond system verifies whether an underwriter who currently buys bonds is a member of an underwriting group of the bonds, wherein the computer equipment comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, and the processor realizes the verification method of the information of the member of the bond underwriting group based on the block chain when executing the computer program.
The embodiment of the invention also provides a computer readable storage medium, which is used for solving the technical problem that a great amount of manual operation is involved when an existing bond system verifies whether an underwriter who currently applies for purchasing bonds is a member of an underwriting group of the bonds, and the computer readable storage medium stores a computer program for executing the block chain-based bond underwriting group member information verification method.
In summary, embodiments of the present invention provide a method, an apparatus, a computer device, and a computer-readable storage medium for verifying bond earning and selling group member information based on a block chain, where each earning and selling group member in an earning and selling group of a bond is verified by a block chain intelligent contract, and after the verification is passed, the earning and selling group information is stored in each node of a block chain system. When the underwriting business buys the bond, the system automatically compares the underwriting business information with the block chain storage underwriting group information, verifies whether the underwriting business of the current buid bond is the member of the underwriting group of the bond or not, and achieves the purpose of automatically identifying and verifying the identity information.
The method and the device for verifying the identity of the underwriting group have the advantages that ① applying for a CA certificate during registration of the underwriting business is used for identity verification during chaining, data safety is improved, ② the underwriting business signs on line, so that signing operation is more flexible and convenient, ③ the underwriting business automatically judges whether the underwriting business is a member of the underwriting group when applying for purchasing bonds, manual operation is reduced, verification efficiency is improved, ④ the underwriting group information is stored through a block chain system, and the purposes of being open, transparent and tamper-proof can be achieved.
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.
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.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for verifying bond earning group member information based on a block chain is characterized by comprising the following steps:
acquiring underwriter information of one or more underwriters for currently underwriting target bonds;
searching for the information of the reimbursement group of the target bond stored on the block chain system, wherein the information of the reimbursement group of the target bond comprises: member information of each member of the underwriting group in the underwriting group of the target bond;
and verifying whether each underwriter currently paying the target bond is a member of the underwriting group of the target bond or not according to the information of the underwriter of each underwriter currently paying the target bond and the information of the member of each underwriting group member in the underwriting group of the target bond.
2. The method of claim 1, wherein prior to finding the underwriting group information for the target bond stored on the blockchain system, the method further comprises:
and establishing a reimbursement group of the target bond, and generating reimbursement group information of the target bond, wherein the reimbursement group of the target bond comprises: one or more underwriters;
and storing the underwriting group information of the target bond to a block chain system.
3. The method of claim 2, wherein creating the reimbursement group for the target bond, generating reimbursement group information for the target bond, comprises:
acquiring one or more selected underwriters, and sending a construction request to each selected underwriter through a block chain system, wherein the construction request is used for constructing an underwriting group of the target bond;
receiving response results returned by each underwriter through a block chain system, wherein the response results comprise: a first response result and a second response result, wherein the first response result represents that each underwriter agrees to join the underwriting group of the target bond, and the second response result represents that each underwriter refuses to join the underwriting group of the target bond;
and when all the response results returned by the respective underwriters are the first response results, establishing the underwriting groups of the target bonds and generating the underwriting group information of the target bonds.
4. The method of claim 3, wherein after receiving response results returned by each underwriter through a blockchain system, the method further comprises:
and under the condition that all the response results returned by the underwriters are not the first response results, acquiring one or more reselected underwriters, and sending the assembly request to the selected underwriters through the block chain system.
5. The method of claim 2, wherein storing the underwriting group information of the target bond to a blockchain system comprises:
acquiring CA certificates of various underwriters in the underwriting group information of the target bonds;
verifying the CA certificate of each underwriter;
and under the condition that the CA certificate of each underwriter passes verification, storing the information of the underwriting group of the target bond to a block chain system in a key-value pair mode, wherein the key is the identification information of the target bond, and the value is the member information of each underwriting member.
6. The method of claim 5, wherein obtaining the CA certificate of each underwriter in the underwriting group information of the target bond comprises:
receiving a registration request of each underwriter, wherein the registration request comprises underwriter information of each underwriter;
according to the registration request of each underwriter, the underwriter information of each underwriter is sent to a CA server;
and receiving the CA certificate returned by the CA server to each underwriter.
7. The method of claim 2, wherein after the underwriting group of the target bond is established and the underwriting group information of the target bond is generated, the method further comprises:
generating a construction notification message of the target bond;
and sending the construction notification message of the target bond to each underwriter through a block chain system.
8. A block chain-based bond earninggroup member information verification apparatus, characterized by comprising:
the information acquisition module is used for acquiring underwriter information of one or more underwriters of the current procurement target bond;
the block chain searching module is used for searching for the reimbursement group information of the target bond stored on the block chain system, wherein the reimbursement group information of the target bond comprises: member information of each member of the underwriting group in the underwriting group of the target bond;
and the information verification module is used for verifying whether each underwriter currently applying the target bond is a member of the underwriting group of the target bond or not according to the information of the underwriter of each underwriter currently applying the target bond and the member information of each member of the underwriting group of the target bond.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the blockchain based bond underwriting group membership information verification method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium storing a computer program for executing the block chain-based bond venture member information verification method according to any one of claims 1 to 7.
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