CN113114629A

CN113114629A - Contract management method, device, equipment and storage medium based on block chain

Info

Publication number: CN113114629A
Application number: CN202110301624.7A
Authority: CN
Inventors: 苟喜霞
Original assignee: JD Digital Technology Holdings Co Ltd; Jingdong Shuke Haiyi Information Technology Co Ltd
Current assignee: JD Digital Technology Holdings Co Ltd; Jingdong Shuke Haiyi Information Technology Co Ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-07-13
Anticipated expiration: 2041-03-22
Also published as: CN113114629B

Abstract

The present application relates to the field of blockchains, and in particular, to a method, an apparatus, a device, and a storage medium for contract management based on blockchains. The method applied to the contract signing node comprises the following steps: acquiring identity information of a contract signing party associated with a contract, and verifying the identity information; when the identity information passes verification, acquiring an access identifier, and linking the access identifier to a block chain, wherein the access identifier is used for identifier verification when accessing the block chain; after the management requirement of the contract is acquired, the access identifier is transmitted to the block chain again; and after the verification passing information of the access identifier returned by the block chain is acquired, accessing the block chain to manage the contract according to the management requirement. The method and the device are used for solving the problem that the efficiency of the block chain to the user verification process is low when the user accesses the block chain.

Description

Contract management method, device, equipment and storage medium based on block chain

Technical Field

The present application relates to the field of blockchains, and in particular, to a method, an apparatus, a device, and a storage medium for contract management based on blockchains.

Background

In recent years, block chains have been applied to more and more fields. The block chain is a shared database, and the data or information stored in the shared database has the characteristics of unforgeability, whole-course trace, traceability, public transparency, collective maintenance and the like. Based on the characteristics, the block chain technology lays a solid 'trust' foundation, creates a reliable 'cooperation' mechanism and has wide application prospect.

With the development of the technology, contract management processes such as contract signing, contract analysis and the like can realize the electronization of the contract in a mode of an electronic platform. And the combination of the electronic contract and the block chain can greatly reduce the risk of the contract being tampered and lost.

However, when contract management is performed on the basis of the blockchain, it is necessary to authenticate each user accessing the blockchain because of the characteristics of the blockchain, and a complicated procedure is required for the user authentication process, which wastes much time. The complexity and the time consumption of the user verification process are more, so that the verification efficiency is low, the contract processing efficiency is low, and the use experience of the user is poor.

Disclosure of Invention

The application provides a contract management method based on a block chain, which is used for solving the problem that the efficiency of the block chain to a user verification process is low when a user accesses the block chain.

In a first aspect, an embodiment of the present application provides a contract management method based on a block chain, which is applied to a contract signing node, and includes: acquiring identity information of a contract signing party associated with a contract, and verifying the identity information; when the identity information passes verification, acquiring an access identifier, and linking the access identifier to a block chain, wherein the access identifier is used for identifier verification when accessing the block chain; after the management requirement of the contract is acquired, the access identifier is transmitted to the block chain again; and after the verification passing information of the access identifier returned by the block chain is acquired, accessing the block chain to manage the contract according to the management requirement.

Optionally, the management requirement of the contract includes contract service node information for managing the contract; after the verification passing information of the access identifier returned by the block chain is obtained, accessing the block chain to manage the contract according to the management requirement includes: after the verification passing information of the access identifier returned by the block chain is acquired, generating a first management authorization instruction according to the management requirement; transmitting the first management authorization instruction to the blockchain, wherein the blockchain is used for broadcasting the first management authorization instruction, and the first management authorization instruction is used for authorizing the contract service node to manage the contract.

Optionally, the obtaining an access identifier when the identity information is verified includes: when the identity information passes the verification, transmitting the identity information to a block chain identifier management party; and acquiring the access identifier returned by the block chain identifier manager, wherein the access identifier is generated according to the identity information.

Optionally, the method further comprises: acquiring a proposed contract which is not signed, and acquiring a signature of the contract signing party on the proposed contract; generating the contract with completed signing according to the proposed contract and the signature of the proposed contract; after the generating the contract for which the subscription is completed, the method further includes: linking the contract to the blockchain; obtaining a deposit certificate number which is returned by the block chain and uniquely corresponds to the contract; and transmitting the deposit certificate number to a block chain identifier manager, wherein the block chain identifier manager is used for correspondingly storing the deposit certificate number and the access identifier.

In a second aspect, an embodiment of the present application provides a block chain-based contract management method, applied to a contract service node, including: acquiring a certificate storage number of a contract and acquiring a management requirement of the contract, wherein the certificate storage number is uniquely corresponding to the contract; acquiring an access identifier corresponding to a contract signing party associated with the contract according to the certificate storing number, wherein the access identifier is used for identifier verification when a block chain is accessed; transmitting the access identifier to the block chain; and after the verification passing information of the access identifier returned by the block chain is acquired, accessing the block chain to manage the contract according to the management requirement.

Optionally, after obtaining the verification passing information of the access identifier returned by the block chain, accessing the block chain to manage the contract according to the management requirement includes: after the verification passing information of the access identifier returned by the block chain is acquired, generating a second management authorization instruction according to the management requirement; transmitting the second management authorization instruction to the blockchain, wherein the blockchain is used for broadcasting the second management authorization instruction, and the second management authorization instruction is used for authorizing the contract signing node to provide the contract; and acquiring the contract returned by the block chain, and managing the contract according to the management requirement.

Optionally, the obtaining, according to the deposit certificate number, an access identifier corresponding to a contract signing party associated with the contract includes: transmitting the certificate storing number to a block chain identifier management party; and acquiring the access identifier returned by the block chain identifier manager, wherein the block chain identifier manager is used for correspondingly storing the access identifier and the evidence storage number.

In a third aspect, an embodiment of the present application provides a contract management method based on a block chain, which is applied to the block chain, and includes: acquiring an access identifier transmitted by a contract signing node, and storing the access identifier on the block chain; acquiring the access identifier transmitted by the contract signing node again, and verifying the acquired access identifier again according to the access identifier stored on the block chain; and after the access identifier obtained again passes the verification, returning verification passing information of the access identifier to the contract signing node so as to accept the access of the contract signing node.

Optionally, after the re-acquired access identifier passes the verification, returning verification passing information of the access identifier to the contract signing node, further comprising: acquiring a first management authorization instruction transmitted by the contract signing node; after the first management authorization instruction is broadcasted on a chain, determining a contract service node indicated by the first management authorization instruction, wherein the first management authorization instruction is used for authorizing the contract service node to manage the contract; and transmitting the first management authorization instruction to the contract service node.

Optionally, the method further comprises: acquiring the contract transmitted by the contract signing node; and generating a certificate storing number which is uniquely corresponding to the contract according to the contract, and returning the certificate storing number to the contract signing node.

Optionally, the method further comprises: receiving the access identifier transmitted by the contract service node; verifying the access identifier transmitted by the contract service node according to the access identifier stored on the block chain; and after the access identifier transmitted by the contract service node passes the verification, returning verification passing information of the access identifier to the contract service node so as to receive the access of the contract service node.

Optionally, after the access identifier transmitted by the contract service node is verified, returning verification passing information of the access identifier to the contract service node, further includes: receiving a second management authorization instruction transmitted by the contract service node; after the second management authorization instruction is broadcasted on the chain, determining a contract signing node indicated by the second management authorization instruction, wherein the second management authorization instruction is used for authorizing the contract signing node to provide the contract; and acquiring the contract provided by the contract signing node and transmitting the contract signing node to the contract service node.

In a fourth aspect, an embodiment of the present application provides a contract management system based on a block chain, which is characterized by including a contract signing node and a block chain; the contract signing node is used for acquiring identity information of a contract signing party associated with a contract, verifying the identity information, acquiring an access identifier when the identity information is verified, and chaining the access identifier to a block chain, wherein the access identifier is used for identifier verification when the block chain is accessed; the block chain is used for acquiring an access identifier transmitted by a contract signing node and storing the access identifier on the block chain; the contract signing node is further configured to retransmit the access identifier to the block chain after acquiring the management requirement of the contract, and access the block chain after acquiring verification passing information of the access identifier returned by the block chain; the block chain is further configured to acquire the access identifier retransmitted by the contract signing node, verify the reacquired access identifier according to the access identifier stored in the block chain, and return verification passing information of the access identifier to the contract signing node after the reacquired access identifier passes verification.

Optionally, a contract service node is further included; the contract signing node is configured to generate a first management authorization instruction according to the management requirement after acquiring verification passing information of the access identifier, which is returned by the block chain, and transmit the first management authorization instruction to the block chain, where the first management authorization instruction is used to authorize the contract service node to manage the contract; the block chain is used for acquiring a first management authorization instruction transmitted by the contract signing node, determining the contract service node indicated by the first management authorization instruction after the first management authorization instruction is broadcasted on the chain, and transmitting the first management authorization instruction to the contract service node; and the contract service node acquires the first management authorization instruction and manages the contract according to the first management authorization instruction.

Optionally, a block chain identifier manager is further included; the contract signing node is used for transmitting the identity information to a block chain identifier manager and acquiring the access identifier returned by the block chain identifier manager when the identity information passes verification; and the block chain identifier management party is used for generating the access identifier according to the identity information and returning the access identifier to the contract signing node.

Optionally, the contract signing node is configured to obtain a proposed contract that is not signed, obtain a signature of the contract signing party on the proposed contract, generate the contract for which the signing is completed according to the proposed contract and the signature of the proposed contract, and link the contract to the block chain; the block chain is used for generating a certificate storing number which is only corresponding to the contract according to the contract and returning the certificate storing number to the contract signing node; the contract signing node is used for acquiring the certificate storing number and transmitting the certificate storing number to the block chain identifier management party; and the block chain identifier manager is used for correspondingly storing the certificate storage number and the access identifier.

Optionally, the contract service node is configured to obtain a certificate storing number of a contract and a management requirement of the contract, obtain, according to the certificate storing number, the access identifier corresponding to a contract signing party associated with the contract, and transmit the access identifier to the block chain; the block chain is used for receiving the access identifier transmitted by the contract service node, verifying the access identifier transmitted by the contract service node according to the access identifier stored on the block chain, and returning verification passing information of the access identifier to the contract service node after the access identifier transmitted by the contract service node passes the verification; and the contract service node is used for accessing the block chain after acquiring the verification passing information of the access identifier.

Optionally, the contract service node is configured to generate a second management authorization instruction according to the management requirement after obtaining verification passing information of the access identifier, which is returned by the blockchain, and transmit the second management authorization instruction to the blockchain, where the second management authorization instruction is used to authorize the contract signing node to provide the contract; the block chain is used for acquiring a second management authorization instruction transmitted by the contract service node, determining the contract signing node indicated by the second management authorization instruction after the second management authorization instruction is broadcasted on the chain, and transmitting the second management authorization instruction to the contract signing node; and the contract signing node is used for acquiring the second management authorization instruction and providing the contract according to the second management authorization instruction.

Optionally, the contract service node is configured to transmit the certificate storing number to a block chain identifier manager, and obtain the access identifier returned by the block chain identifier manager; and the block chain identifier management party is used for returning the access identifier stored corresponding to the certificate storing number to the contract service node.

In a fifth aspect, an embodiment of the present application provides a contract signing node apparatus, including: the identity acquisition module is used for acquiring the identity information of a contract signing party associated with a contract and verifying the identity information; a first identifier obtaining module, configured to obtain an access identifier when the identity information verification passes, and link the access identifier to a block chain, where the access identifier is used for identifier verification when accessing the block chain; the first identifier application module is used for transmitting the access identifier to the block chain again after acquiring the management requirement of the contract; a first processing module, configured to access the blockchain after obtaining verification passing information of the access identifier returned by the blockchain, so as to manage the contract according to the management requirement

In a sixth aspect, an embodiment of the present application provides a contract service node apparatus, including: the system comprises a number acquisition module, a contract management module and a contract management module, wherein the number acquisition module is used for acquiring a certificate storage number of a contract and acquiring the management requirement of the contract, and the certificate storage number is uniquely corresponding to the contract; a second identifier obtaining module, configured to obtain, according to the certificate storing number, an access identifier corresponding to a contract signing party associated with the contract, where the access identifier is used for identifier verification when accessing a block chain; the second identification application module is used for transmitting the access identification to the block chain; and the second processing module is used for accessing the block chain after acquiring the verification passing information of the access identifier returned by the block chain so as to manage the contract according to the management requirement.

In a seventh aspect, an embodiment of the present application provides a block chain apparatus, including: the acquisition module is used for acquiring the access identifier transmitted by the contract signing node and storing the access identifier on the block chain; the verification module is used for acquiring the access identifier transmitted by the contract signing node again and verifying the acquired access identifier again according to the access identifier stored on the block chain; and the information feedback module is used for returning the verification passing information of the access identifier to the contract signing node to receive the access of the contract signing node after the obtained access identifier passes the verification.

In an eighth aspect, an embodiment of the present application provides an electronic device, including: the system comprises a processor, a memory and a communication bus, wherein the processor and the memory are communicated with each other through the communication bus; the memory for storing a computer program; the processor is configured to execute the program stored in the memory to implement the contract management method based on the blockchain according to the first aspect; or, implementing the contract management method based on the blockchain according to the second aspect; or, implementing the contract management method based on the blockchain according to the third aspect.

In a ninth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements the contract management method based on a blockchain according to the first aspect; or, the computer program when executed by a processor implements the blockchain-based contract management method of the second aspect; alternatively, the computer program, when executed by a processor, implements the block chain-based contract management method of the third aspect.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: according to the method provided by the embodiment of the application, the contract signing node verifies the identity information of the contract signing party, after the verification is passed, the access mark is obtained, the block chain verifies the access mark, and after the verification is passed, the contract signing party can access the block chain through the contract signing node. That is, when accessing the blockchain, the identity information of the user itself is not the verification of the blockchain, but the access identifier. For the contract signing party, the access identification special for accessing the block chain can be obtained only through the identity verification of the contract signing node. Therefore, the efficiency of the block chain verification process can be greatly improved, the efficiency of the contract management process is further improved, and better use experience is provided for users.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic flowchart of a block chain-based contract management method applied to contract signing nodes according to an embodiment of the present application;

fig. 2 is a schematic diagram of a specific process flow of registration of a contract signing party at a contract signing node provided in an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a procedure of performing real-name authentication on a contract signing node provided in an embodiment of the present application;

fig. 4 is a schematic flowchart of the process steps of initiating a contract wind control analysis flow by a contract signing node provided in the embodiment of the present application;

fig. 5 is a schematic flowchart of a block chain-based contract management method applied to contract service nodes in the embodiment of the present application;

fig. 6 is a schematic flowchart illustrating a procedure in which a contract service node initiates a contract wind control analysis process according to an embodiment of the present application;

fig. 7 is a schematic flowchart illustrating steps of a contract management method based on blockchains when applied to blockchains according to an embodiment of the present application;

FIG. 8 is a first block chain-based contract management system architecture connection diagram provided in an embodiment of the present application;

FIG. 9 is a block chain-based contract management system architecture connection diagram II provided in an embodiment of the present application;

FIG. 10 is a third schematic diagram illustrating a block chain-based contract management system architecture connection provided in an embodiment of the present application;

FIG. 11 is a schematic connection diagram of a system architecture of a block chain-based contract management system provided in an embodiment of the present application;

fig. 12 is a schematic structural connection diagram of a contract signing node apparatus provided in this embodiment of the present application;

fig. 13 is a schematic structural connection diagram of a contract service node apparatus provided in an embodiment of the present application;

fig. 14 is a schematic structural connection diagram of a blockchain device provided in an embodiment of the present application;

fig. 15 is a schematic structural connection diagram of an electronic device provided in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the block chain-based contract management method provided by the embodiment of the application, the contract signing party accesses the block chain through the contract signing node, the contract server accesses the block chain through the contract service node, and the contract signing node, the contract service node and the block chain are interactively matched to realize the relevant process of contract management. In the process, the identity information of the contract signing party or the contract service party is not required to be directly verified by the blockchain. But completes the verification process based on the contract signing node and the contract service node.

The contract signing node is a background server of the contract signing platform, the background server can be any one of a plurality of types of servers such as a rack server, a cabinet server and a cloud server, and the protection scope of the application is not limited by the specific type of the server. The contract signing platform can be realized in the form of a client, and a contract signing party can access a background server corresponding to the contract signing platform through the client. The client can be installed on an intelligent device, and the intelligent device can be any one of multiple devices such as a mobile phone, a tablet computer, a notebook computer and a computer. For example, the contract signing node may be implemented in the form of an Application (APP) on a mobile phone. The scope of protection of the present application is not limited to a particular type of smart device.

The contract service node is a background server of the contract service platform, the background server can be any one of a plurality of types of servers such as a rack server, a cabinet server and a cloud server, and the protection scope of the application is not limited by the specific type of the server. The contract service platform can be realized in the form of a client, and a contract service party can access a background server corresponding to the contract service platform through the client. The client can be installed on an intelligent device, and the intelligent device can be any one of multiple devices such as a mobile phone, a tablet computer, a notebook computer and a computer. For example, the contract service node may be implemented as a client on a notebook computer. The scope of protection of the present application is not limited to a particular type of smart device.

In an embodiment, as shown in fig. 1, when the block chain-based contract management method is applied to a contract signing node, the following steps are implemented:

step 101, obtaining the identity information of the contract signing party associated with the contract, and verifying the identity information.

The contract signing party is any user who accesses the contract signing node through the contract signing platform, and may be an individual user or a corporate user such as a company. When the contract signing party accesses the contract signing node for the first time, the contract signing party needs to complete registration at the contract signing node, and when the contract signing node performs registration, the contract signing party needs to provide identity information. When the contract signing party is a personal user, the identity information can be a mobile phone number, an identity card number and the like; when the contract signing party is a corporate user such as a company, the identification information may be an organization code, a business registration information, a social credit code, or the like. The identity information of the contract signing party can also be other information uniquely corresponding to the contract signing party, and the protection scope of the application is not limited by the specific content of the identity information.

In one embodiment, when the contract signing party is a personal user, the contract signing platform is implemented by a client installed on a mobile phone, and the contract signing node is a background server corresponding to the client, the specific process of registering the contract signing party on the contract signing platform from the perspective of the contract signing node, as shown in fig. 2, includes the following steps:

step 201, acquiring a mobile phone number of a contract signing party and acquiring registration information of the contract signing party, wherein the registration information comprises identity information of the contract signing party;

step 202, sending a verification code to a mobile phone corresponding to the mobile phone number;

step 203, acquiring verification information returned by the mobile phone, wherein the verification information is generated by the mobile phone according to the verification code;

step 204, judging whether the verification information is matched with the verification code, if so, executing step 205, and if not, executing step 206;

step 205, prompting the successful registration information, accepting the access of the contract signing party, and storing the registration information of the contract signing party;

step 206, returning the registration failure information to the mobile phone.

In the registration process, the registration information of the contract signing party further includes agreement policy confirmation information, which includes at least one of contract signing party confirmation information, confirmation information of certificate-deposited block chain such as hash value, confirmation information of automatic issuing access identifier for the user who has successfully registered by the block chain identifier manager, privacy policy confirmation information, and certificate-deposited agreement.

And 102, when the identity information passes verification, acquiring an access identifier, and linking the access identifier to the block chain, wherein the access identifier is used for identifier verification when the block chain is accessed.

In this embodiment, the access identifier may be any one of multiple forms, such as a certificate, an authentication code, and a Token (Token). The access identification is stored in the contract signing node corresponding to the identity information of the contract signing party.

In one embodiment, after the contract signing party successfully registers in the contract signing node, the contract signing node can be registered through the identity information or can be registered through the access identifier. I.e. the access identities are also used for logging on to the contracting nodes.

In one embodiment, when the identity information is verified, a specific process of obtaining the access identifier is implemented by a contract signing node in cooperation with a block chain identifier manager, and the specific process is as follows: when the identity information passes the verification, the identity information is transmitted to a block chain identifier management party; and acquiring an access identifier returned by the block chain identifier management party, wherein the access identifier is generated according to the identity information.

And the block chain identifier management party is used for generating an access identifier corresponding to the identity information according to the identity information. Specifically, the blockchain id manager may be a Decentralized Digital Identity (DID) applet.

Based on the above embodiment, when the contract signing party is an individual user, the contract signing node is implemented by a client installed on a mobile phone, and the registration information of the contract signing party further includes agreement policy confirmation information, if the agreement policy confirmation information includes confirmation information that the block chain identifier manager automatically issues an access identifier for a user who successfully registers, the contract signing node displays DID applet use prompt information after the contract signing party successfully registers. And after acquiring the confirmation information corresponding to the prompt information, the contract signing node automatically transmits the identity information to the DID applet, and then the DID applet generates an access identifier and returns the access identifier to the contract signing node. And realizing automatic issuing of the access identification.

Specifically, when the contract signing party needs to log in the contract signing node next time, the DID applet can be directly called, after the DID applet successfully verifies the registration information which is logged in by the contract signing party for the first time, the authorization information for logging in the contract signing node is generated and transmitted to the contract signing node, and the contract signing party logs in the contract signing node according to the authorization information. After successful registration, the current registration information is linked to the blockchain. After the contract signing party logs in the contract signing node, the contract can be authorized to be provided, and the authorization information for providing the contract is also linked to the block chain.

In this embodiment, the access identifier can be obtained simply and quickly by the block chain identifier manager. Meanwhile, the login information of the contract signing party and the authorization information of the provided contract are uploaded to the block chain, so that the safety of the contract is guaranteed, and the follow-up inquiry of the process is facilitated.

And 103, after acquiring the management requirement of the contract, transmitting the access identifier to the block chain again.

In this embodiment, the contract signing node can obtain the requirement information of the contract signing party through the interactive control of the intelligent terminal where the contract signing node is located. And after the contract signing party inputs the relevant information of the requirements through the interactive control, generating the management requirements of the contract. After the management requirement of the contract is generated, if the management requirement needs to access the block chain, the contract signing node transmits the access identifier to the block chain, and the block chain verifies the access identifier.

And 104, after the verification passing information of the access identifier returned by the blockchain is acquired, accessing the blockchain to manage the contract according to the management requirement.

In this embodiment, the chain of the blockchain stores the access identifier transmitted when the contract signing party registers. And after the block chain acquires the access identifier transmitted by the contract signing node again, verifying the acquired access identifier again through the access identifier stored on the chain, and after the verification is passed, returning verification passing information of the access identifier to the contract signing node. At this time, the block chain can be accessed by the contract signing node.

In one embodiment, for the management requirement of the contract, the contract service node is required to process the contract, and at this time, the management requirement of the contract includes contract service node information for managing the contract.

Specifically, after the verification passing information of the access identifier returned by the block chain is acquired, the block chain is accessed to manage the contract according to the management requirement, and the process is as follows: after obtaining verification passing information of the access identifier returned by the block chain, generating a first management authorization instruction according to the management requirement; and transmitting the first management authorization instruction to a blockchain, wherein the blockchain is used for broadcasting the first management authorization instruction, and the first management authorization instruction is used for authorizing a contract service node to manage the contract.

In this embodiment, the contract service node is a platform that can access the block chain and provide services. And the contract signing node transmits the first management authorization instruction to the block chain, and the block chain broadcasts the first management authorization instruction on the chain. The first management authorization instruction comprises information of contract service nodes, and after the contract service nodes acquire the first management authorization instruction broadcasted on the link, the contract service nodes manage the contract according to the management requirements contained in the first management authorization instruction.

In one embodiment, the contract signing node is used to sign a contract. Specifically, the signing and generating process of the contract is as follows: acquiring a proposed contract which is not signed, and acquiring a signature of a contract signing party on the proposed contract; and generating a contract completed with the signing according to the proposed contract and the signature of the proposed contract.

In this embodiment, after the contract signing node generates a contract for which the signing is completed, the contract is linked to the block chain, then a credential storage number which is returned by the block chain and uniquely corresponds to the contract is obtained, and then the credential storage number is transmitted to the block chain identifier manager, where the block chain identifier manager is configured to store the credential storage number and the access identifier correspondingly.

The access identifier can be obtained through the correspondence of the certificate storage number, so that the access identifier can be conveniently obtained and used.

In a specific embodiment, before the contract signing party signs the contract, the contract signing node needs to perform real-name authentication on the contract signing party. As shown in fig. 3, the specific process of processing the contract signing node is as follows:

step 301, obtaining login information of a contract signing party, and linking the login information to a block chain;

step 302, acquiring a contract signing instruction initiated by a contract signing party;

step 303, performing real-name authentication on the homonymy signature party;

step 304, judging whether the real name authentication passes, if so, executing step 305, otherwise, executing step 303;

step 305, entering a contract signing page, acquiring a contract drafting command, generating a drafting contract, and displaying on an interactive interface of a contract signing node;

step 306, acquiring the signing willingness of the contract signing party, and uploading the signing willingness to a block chain;

step 307, acquiring a signature of a contract signing party, generating a contract after signing is completed, and linking the signature and the contract to a block chain;

and 308, acquiring a certificate storing number which is returned by the block chain and uniquely corresponds to the contract.

In this embodiment, the contract signing node provides a contract template, and the obtained contract formulating instruction may be a modification of the contract template, and a formulated contract is generated according to the contract template and the formulating instruction.

In this embodiment, when the contract with the contract is linked to the blockchain, the content of the link may be any one or more of an authorization agreement of the contract signing party, a contract abstract, a contract original text, a type of the contract signing party, and a name of the contract signing party.

In one embodiment, for a signed contract, the contract signing party actively triggers uplink operation at the contract signing node, and after uplink is successful, the block chain returns a certificate deposit number uniquely corresponding to the contract signing node.

In a specific embodiment, the contract signing party initiates a contract wind control analysis process at a contract signing node according to the wind control requirement. Before initiating the process of the wind control analysis, the contract signing party finishes registration at a contract signing node and acquires an access identifier transmitted by a DID applet, the access identifier is also linked to a block chain, a contract original text needing the wind control analysis is stored at the contract signing node, and a hash value of the contract needing the sub-control analysis is linked to the block chain.

Specifically, as shown in fig. 4, the whole flow of the wind control analysis is specifically as follows:

after the contract signing party logs in the contract signing node, the contract signing node selects the contract which needs to be subjected to wind control analysis. It should be noted that the contract signing node holds at least one contract related to the contract signing party, and the contract signing node may display each contract related to the contract signing party, and the user may autonomously select a contract to be managed.

The contract signing party selects a contract service node for providing service at the contract signing node, and it should be noted that the contract service node may be a service platform of a financial service company, and may also be other platforms capable of providing service related to a contract, and the protection scope of the present application is not limited by the specific type of the contract service node.

And generating a corresponding demand instruction of the wind control analysis according to the selected contract and the selected contract service node. After the requirement instruction is generated, the contract signing node obtains the access identifier through the DID applet.

And the contract signing node transmits the access identifier to the block chain, and the block chain verifies the access identifier. And after the verification is passed, returning verification passing information of the access identifier to the contract signing node. And after obtaining the verification passing information, the contract signing node generates a first management authorization instruction, transmits the first management authorization to the block chain according to the instruction, and stores the first management authorization on the chain. Meanwhile, the contract signing node transmits the contract original text to the block chain.

After the block chain acquires the first management authorization instruction and the contract original text, extracting keywords in the contract original text according to a preset intelligent contract, and transmitting the extracted keywords to the contract service node. It should be noted that the intelligent contract includes a field list preset by the contract signing node, and the field list includes a required keyword sequence. When the intelligent contract is executed, only the keywords which can be identified in the original contract text are assigned, and the keywords in the other field lists are null. And the keywords which are transmitted to the contract service nodes and subjected to value assignment are extracted keywords.

And after acquiring the first management authorization instruction and the extracted keywords, the contract service node performs sub-control analysis according to the keywords of the contract, and obtains a wind control analysis result and financial services according to the wind control analysis result. The financial services include, but are not limited to, consumption, enterprise, etc.

And linking the wind control analysis result and the financial service to a block chain, returning the wind control analysis result and the financial service to a contract signing node, and displaying the wind control analysis result and the financial service to a contract signing party. After the contract signing party is determined, the contract service node is authorized to execute the financial service, and the execution result is linked to the block chain.

In the embodiment, the whole process of the contract wind control analysis is completed based on the contract signing node, the block chain and the contract service node, the trace of the whole contract management process is realized, the application and the check of the subsequent financial service are facilitated, meanwhile, the management process is traceable, and the risk of the contract being tampered is avoided.

In an embodiment, as shown in fig. 5, when the block chain-based contract management method is applied to a contract service node, the implemented steps flow as follows:

step 501, obtaining a certificate storage number of the contract and obtaining a management requirement of the contract, wherein the certificate storage number is uniquely corresponding to the contract.

In this embodiment, for a contract that has obtained a certificate deposit number, the contract service node can initiate management of the contract through the certificate deposit number. The certificate storing number is that the contract signing party links the contract to the block chain through the contract signing node, the block chain is returned to the contract signing node, and the certificate storing number is uniquely corresponding to the contract.

And 502, acquiring an access identifier corresponding to the contract signing party associated with the contract according to the certificate storing number, wherein the access identifier is used for identifier verification when the block chain is accessed.

In one embodiment, the certificate storing number is uniquely corresponding to the contract, and the contract signing party is corresponding to the access identification. After the unique corresponding contract is determined through the certificate storing number, the contract signing party of the contract can be determined through the contract, and then the access identification can be obtained through the contract signing party. The access identifier is obtained after the contract signing party successfully registers in the contract signing node and is linked to the block chain. By means of the access identifier, the block chain can be accessed.

In one embodiment, the certificate storing number and the access identifier are correspondingly stored in the block chain identifier manager. The specific process of acquiring the access identifier corresponding to the contract signing party associated with the contract according to the certificate storing number is as follows: transmitting the certificate storing number to a block chain identifier management party; and acquiring an access identifier returned by the block chain identifier manager, wherein the block chain identifier manager is used for correspondingly storing the access identifier and the evidence storage number.

In this embodiment, since the access identifier and the certificate storing number are stored by the block chain identifier manager, the access identifier can be quickly acquired by the certificate storing number, so that the speed of the whole contract processing process is increased, and the efficiency of the block chain verification process is improved.

Step 503, the access identifier is transmitted to the block chain.

In this embodiment, the contract service node transmits the access identifier to the blockchain, and the blockchain verifies the access identifier transmitted by the contract service node through the access identifier stored in the chain. And after the verification is successful, returning verification passing information of the access identifier to the contract service node.

And step 504, after the verification passing information of the access identifier returned by the blockchain is acquired, accessing the blockchain to manage the contract according to the management requirement.

In this embodiment, after obtaining the verification passing information returned by the block chain, the contract service node may access the block chain to complete subsequent contract management.

In one embodiment, after obtaining the verification passing information of the access identifier returned by the block chain, the specific process of accessing the block chain to manage the contract according to the management requirement is as follows: after obtaining verification passing information of the access identifier returned by the block chain, generating a second management authorization instruction according to the management requirement; transmitting a second management authorization instruction to the block chain, wherein the block chain is used for broadcasting the second management authorization instruction, and the second management authorization instruction is used for authorizing the contract signing node to provide a contract; and acquiring the contract returned by the block chain, and managing the contract according to the management requirement.

In a specific embodiment, a contract wind control analysis process is initiated by the contract service node. Before initiating the process of the wind control analysis, the contract signing party finishes registration at a contract signing node and acquires an access identifier transmitted by a DID applet, the access identifier is also linked to a block chain, a contract original text needing the wind control analysis is stored at the contract signing node, and a hash value of the contract needing the sub-control analysis is linked to the block chain. The access identification and the evidence storing number are correspondingly stored to the block chain identification management party.

Specifically, as shown in fig. 6, the flow of the wind control analysis is as follows:

the contract server can select the financial company providing the service through the contract service node, and the contract server inputs the deposit number of the contract through the contract service node. And the contract service node transmits the certificate storing number to the block chain identifier manager to obtain an access identifier returned by the block chain contract manager. And the contract service node accesses the block chain through the access identifier.

And the contract service node generates a second management authorization instruction according to the certificate storage number and the selected financial company providing the service, and transmits the second management authorization instruction to the block chain, wherein the second management authorization instruction comprises the information of the contract signing node where the contract signing party is located.

And the block chain transmits the second management authorization instruction to the contract signing node in a broadcast mode, and the contract platform transmits the contract original text to the block chain according to the second management authorization instruction.

After acquiring the contract original text, the block chain extracts keywords in the contract original text according to a preset intelligent contract and transmits the extracted keywords to the contract service node. It should be noted that the intelligent contract includes a field list preset by the contract signing node, and the field list includes a required keyword sequence. When the intelligent contract is executed, only the keywords which can be identified in the original contract text are assigned, and the keywords in the other field lists are null. And the keywords which are transmitted to the contract service nodes and subjected to value assignment are extracted keywords.

And after the contract service node acquires the second management authorization instruction and the extracted keywords, performing sub-control analysis according to the keywords of the contract, and obtaining a wind control analysis result and financial services according to the wind control analysis result. The financial services include, but are not limited to, consumption, enterprise, etc.

In an embodiment, as shown in fig. 7, when the contract management method based on a blockchain is applied to a blockchain, the implemented steps flow as follows:

and 701, acquiring an access identifier transmitted by the contract signing node, and storing the access identifier on the block chain.

In this embodiment, the access identifier is obtained by the block chain identifier manager after the contract signing party completes registration at the contract signing node. After the block chain obtains the access identifier for the first time, the access identifier is stored in the chain and used for verifying the access identifier received again in the follow-up process.

And step 702, acquiring the access identifier transmitted by the contract signing node again, and verifying the acquired access identifier again according to the access identifier stored in the block chain.

And after the block chain acquires the access identifier again, verifying the acquired access identifier again by using the access identifier stored in the block chain before. When the access identifier on the chain has the same identifier as the obtained access identifier, the obtained access identifier passes the verification.

And 703, after the obtained access identifier passes the verification, returning verification passing information of the access identifier to the contract signing node to receive the access of the contract signing node.

In this embodiment, the blockchain may be any one of public, private, and alliance types of blockchains, and the scope of protection of the present application is not limited to the specific type of blockchain.

In one embodiment, initiation of contract demand management from a contract contracting node can be achieved. Specifically, after the access identifier obtained again passes the verification, the following process is further included after the verification passing information of the access identifier is returned to the contract signing node: acquiring a first management authorization instruction transmitted by a contract signing node; after a first management authorization instruction is broadcasted on a chain, a contract service node indicated by the first management authorization instruction is determined, wherein the first management authorization instruction is used for authorizing the contract service node to manage a contract; and transmitting the first management authorization instruction to the contract service node.

In one embodiment, the block chain is configured to generate a certificate number and return the certificate number to the contract signing node, and specifically includes: acquiring a contract transmitted by a contract signing node; and generating a certificate storing number which is uniquely corresponding to the contract according to the contract, and returning the certificate storing number to the contract signing node.

In an embodiment, the verifying the access identifier transmitted by the contract service node by the blockchain specifically includes: receiving the access identifier transmitted by the contract service node; verifying the access identifier transmitted by the contract service node according to the access identifier stored on the block chain; and after the access identifier transmitted by the contract service node passes the verification, returning verification passing information of the access identifier to the contract service node to receive the access of the contract service node.

In one embodiment, initiation of contract demand management from a contract service node can be achieved. After the access identifier transmitted by the contract service node passes the verification, returning verification passing information of the access identifier to the contract service node, specifically including: receiving a second management authorization instruction transmitted by the contract service node; after a second management authorization instruction is broadcasted on the chain, a contract signing node indicated by the second management authorization instruction is determined, wherein the second management authorization instruction is used for authorizing the contract signing node to provide a contract; and acquiring a contract signing node to provide a contract, and transmitting the contract signing node to a contract service node.

According to the method provided by the embodiment of the application, the contract signing node verifies the identity information of the contract signing party, after the verification is passed, the access mark is obtained, the block chain verifies the access mark, and after the verification is passed, the contract signing party can access the block chain through the contract signing node. That is, when accessing the blockchain, the identity information of the user itself is not the verification of the blockchain, but the access identifier. For the contract signing party, the access identification special for accessing the block chain can be obtained only through the identity verification of the contract signing node. Therefore, the efficiency of the block chain verification process can be greatly improved, the efficiency of the contract management process is further improved, and better use experience is provided for users.

The contract management process based on the block chain can be marked in the whole contract management process, so that the contract is prevented from being lost or tampered. Meanwhile, when necessary, for example, judicial calling is required, comprehensive and accurate data related to the contract can be obtained.

The contract signing node and the contract service node can respectively initiate a contract management process, so that more channels are provided for the contract management process, the contract management process is more flexible, and the user experience is improved.

Based on the same concept, the embodiment of the application provides a contract management system based on a block chain.

In one embodiment, as shown in fig. 8, a contract contracting node 801 and a blockchain 802 are included. Specifically, the contract signing node 801 is configured to obtain identity information of a contract signing party associated with the contract, verify the identity information, and when the identity information verification passes, obtain an access identifier, and link the access identifier to the blockchain 802, where the access identifier is used for identifier verification when accessing the blockchain 802.

And the block chain 802 is configured to acquire the access identifier transmitted by the contract signing node 801 and store the access identifier in the block chain.

The contract signing node 801 is further configured to, after acquiring the management requirement of the contract, transmit the access identifier to the blockchain 802 again, and after acquiring the verification passing information of the access identifier returned by the blockchain 802, access the blockchain 802.

The block chain 802 is further configured to acquire an access identifier re-transmitted by the contract signing node 801, verify the re-acquired access identifier according to the access identifier stored in the block chain, and return verification passing information of the access identifier to the contract signing node 801 after the re-acquired access identifier passes verification.

In one embodiment, as shown in fig. 9, the block chain 802 based contract management system further includes a contract service node 803.

The contract signing node 801 is configured to generate a first management authorization instruction according to a management requirement after acquiring verification passing information of the access identifier, which is returned by the block chain 802, and transmit the first management authorization instruction to the block chain 802, where the first management authorization instruction is used for authorizing the contract service node 803 to manage a contract.

The block chain 802 is configured to acquire the first management authorization instruction transmitted by the contract signing node 801, broadcast the first management authorization instruction on the chain, determine the contract service node 803 indicated by the first management authorization instruction, and transmit the first management authorization instruction to the contract service node 803.

And the contract service node 803 acquires the first management authorization instruction and manages the contract according to the first management authorization instruction.

In one embodiment, as shown in FIG. 10, the blockchain 802 based contract management system also includes a blockchain identification manager 804.

And the contract signing node 801 is configured to transmit the identity information to the block chain identifier manager 804 when the identity information passes verification, and acquire an access identifier returned by the block chain identifier manager 804.

And the block chain identifier manager 804 is configured to generate an access identifier according to the identity information, and return the access identifier to the contract signing node 801.

In one embodiment, the contract signing node 801 is configured to obtain proposed contracts that are not signed, obtain signatures of contract signing parties to the proposed contracts, generate contracts that are signed according to the proposed contracts and the signatures of the proposed contracts, and link the contracts to the block chain 802.

And the block chain 802 is configured to generate a certificate storing number uniquely corresponding to the contract according to the contract, and return the certificate storing number to the contract signing node 801.

And the contract signing node 801 is used for acquiring the evidence storing number and transmitting the evidence storing number to the block chain identifier manager 804.

And the block chain identifier manager 804 is configured to correspondingly store the certificate storing number and the access identifier.

In one embodiment, the contract service node 803 is configured to obtain a certificate storing number of the contract and obtain a management requirement of the contract, obtain an access identifier corresponding to a contract signing party associated with the contract according to the certificate storing number, and transmit the access identifier to the block chain 802.

And the block chain 802 is configured to receive the access identifier transmitted by the contract service node 803, verify the access identifier transmitted by the contract service node 803 according to the access identifier stored in the block chain, and return verification passing information of the access identifier to the contract service node 803 after the access identifier transmitted by the contract service node 803 passes verification.

And the contract service node 803 is configured to access the block chain 802 after obtaining the verification passing information of the access identifier.

In one embodiment, the contract service node 803 is configured to generate a second management authorization instruction according to the management requirement after acquiring the verification passing information of the access identifier, which is returned by the blockchain 802, and transmit the second management authorization instruction to the blockchain 802, where the second management authorization instruction is used to authorize the contract signing node 801 to provide a contract.

And the block chain 802 is configured to acquire the second management authorization instruction transmitted by the contract service node 803, broadcast the second management authorization instruction on the chain, determine the contract signing node 801 indicated by the second management authorization instruction, and transmit the second management authorization instruction to the contract signing node 801.

And the contract signing node 801 is configured to obtain the second management authorization instruction and provide the contract according to the second management authorization instruction.

In one embodiment, the contract service node 803 is configured to transmit the credit number to the block chain identifier manager 804, and obtain an access identifier returned by the block chain identifier manager 804.

And the block chain identifier manager 804 is configured to return the access identifier stored corresponding to the certificate storing number to the contract service node 803.

In a specific embodiment, a system architecture of the contract management system based on the blockchain is shown in fig. 11, and includes an application layer, an interface layer, a service layer, a blockchain, and a resource layer.

The application layer comprises contract signing nodes and contract service nodes. The contract signing node realizes the interaction between the contract signing party and the contract management system through the contract signing platform, and the contract service node realizes the interaction between the contract signing party and the contract management system through the contract service platform.

The Interface layer includes an Application Programming Interface (API), an Interface of a Software Development Kit (SDK), an Interface of a programmable Application program (Web Service) based on a world wide Web (Web), and the like.

The service layer provides a plurality of financial services through the interface, and the financial services can be realized through the contract signing node or the contract service node in the application layer and matched with the block chain. The financial service comprises one or more of authentication authorization, contract management, evidence storage and discharge and charging differentiation, wherein the authentication authorization comprises one or more of personal real name, enterprise real name, DID access, key escrow, authorization record and user center; contract management comprises intelligent management, intelligent filing, keywords, content identification, verification statistics, intelligent retrieval and the like; the certificate storage and discharge comprises one or more of contract certificate storage, contract inspection, authorization inspection, contract templates, network overview and data analysis; the charging and sub-moistening comprises one or more of charging management, sub-moistening management, conversion rate analysis, intelligent operation and maintenance, calling statistics and partner management. In addition, other financial service contents can be added according to needs, and the protection scope of the application is not limited by the specific contents of the financial service.

The block chain is a alliance chain, is based on a block chain as a Service (BaaS) platform, is connected with a contract signing node and a contract Service node in an application layer, and completes data interaction and processing. The alliance chain is a contract management alliance chain formed by being combined with a certificate authority, and the certificate authority realizes information interaction on the chain by issuing a certificate.

The resource layer comprises one or more basic resources of public cloud, private cloud, mixed cloud and physical machine, and provides a resource foundation for the normal operation of the whole contract management system. It should be noted that the resource layer may also include other types of basic resources, and the scope of protection of the present application is not limited by the type of resources included in the resource layer.

Based on the same concept, embodiments of the present application provide a contract signing node apparatus, and specific implementations of the apparatus may refer to the description of the method embodiment section, and repeated details are not repeated, as shown in fig. 12, the apparatus mainly includes:

an identity obtaining module 1201, configured to obtain identity information of a contract signing party associated with the contract, and verify the identity information;

a first identifier obtaining module 1202, configured to obtain an access identifier when identity information verification passes, and link the access identifier to a block chain, where the access identifier is used for identifier verification when the block chain is accessed;

a first identifier application module 1203, configured to transmit the access identifier to the blockchain again after acquiring the management requirement of the contract;

the first processing module 1204 is configured to access the blockchain after obtaining verification passing information of the access identifier, which is returned by the blockchain, so as to manage the contract according to the management requirement.

The embodiment of the present application further provides a contract service node apparatus, and specific implementation of the apparatus may refer to the description of the method embodiment, and repeated details are not repeated, as shown in fig. 13, the apparatus mainly includes:

the number obtaining module 1301 is configured to obtain a certificate storage number of the contract and obtain a management requirement of the contract, where the certificate storage number uniquely corresponds to the contract;

a second identifier obtaining module 1302, configured to obtain, according to the certificate storing number, an access identifier corresponding to a contract signing party associated with the contract, where the access identifier is used for identifier verification when accessing the block chain;

a second identifier application module 1303, configured to transmit the access identifier to the block chain;

and the second processing module 1304 is configured to access the block chain after obtaining verification passing information of the access identifier, which is returned by the block chain, so as to manage the contract according to the management requirement.

The embodiment of the present application further provides a block chain apparatus, and the specific implementation of the apparatus may refer to the description of the method embodiment section, and repeated descriptions are omitted, as shown in fig. 14, the apparatus mainly includes:

an obtaining module 1401, configured to obtain an access identifier transmitted by a contract signing node, and store the access identifier in a block chain;

the verification module 1402 is configured to obtain the access identifier transmitted by the contract signing node again, and verify the obtained access identifier again according to the access identifier stored in the block chain;

the information feedback module 1403 is configured to, after the obtained access identifier passes the verification, return verification passing information of the access identifier to the contract signing node to receive access of the contract signing node.

Based on the same concept, an embodiment of the present application further provides an electronic device, as shown in fig. 15, the electronic device mainly includes: a processor 1501, a memory 1502, and a communication bus 1503, wherein the processor 1501 and the memory 1502 communicate with each other via the communication bus 1503. The memory 1502 stores programs executable by the processor 1501, and the processor 1501 executes the programs stored in the memory 1502, so as to implement the following steps:

acquiring the identity information of a contract signing party associated with a contract, and verifying the identity information; when the identity information passes the verification, acquiring an access identifier, and linking the access identifier to the block chain, wherein the access identifier is used for identifier verification when the block chain is accessed; after acquiring the management requirements of the contract, transmitting the access identifier to the block chain again; after obtaining verification passing information of the access identification returned by the block chain, accessing the block chain to manage the contract according to the management requirement;

or, the following steps are implemented: acquiring a certificate storage number of the contract and acquiring the management requirement of the contract, wherein the certificate storage number is uniquely corresponding to the contract; acquiring an access identifier corresponding to a contract signing party associated with the contract according to the certificate storing number, wherein the access identifier is used for identifier verification when the block chain is accessed; transmitting the access identifier to the block chain; after obtaining verification passing information of the access identification returned by the block chain, accessing the block chain to manage the contract according to the management requirement;

or, the following steps are implemented: acquiring an access identifier transmitted by a contract signing node, and storing the access identifier on a block chain; acquiring the access identifier transmitted by the contract signing node again, and verifying the acquired access identifier again according to the access identifier stored on the block chain; and after the obtained access identifier passes the verification, returning verification passing information of the access identifier to the contract signing node to receive the access of the contract signing node.

The communication bus 1503 mentioned in the above electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus 1503 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 15, but this is not intended to represent only one bus or type of bus.

The Memory 1502 may include a Random Access Memory (RAM) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Alternatively, the memory may be at least one memory device located remotely from the processor 1501.

The Processor 1501 may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like, and may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, and discrete hardware components.

In still another embodiment of the present application, there is also provided a computer-readable storage medium having stored therein a computer program which, when run on a computer, causes the computer to execute the block chain-based contract management method described in the above embodiment. Specifically, the following steps are realized:

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The available media may be magnetic media (e.g., floppy disks, hard disks, tapes, etc.), optical media (e.g., DVDs), or semiconductor media (e.g., solid state drives), among others.

It is noted that, in this document, 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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A block chain-based contract management method is applied to contract signing nodes and comprises the following steps:

acquiring identity information of a contract signing party associated with a contract, and verifying the identity information;

when the identity information passes verification, acquiring an access identifier, and linking the access identifier to a block chain, wherein the access identifier is used for identifier verification when accessing the block chain;

after the management requirement of the contract is acquired, the access identifier is transmitted to the block chain again;

and after the verification passing information of the access identifier returned by the block chain is acquired, accessing the block chain to manage the contract according to the management requirement.

2. The block chain-based contract management method according to claim 1, wherein the management demand of the contract contains contract service node information for managing the contract;

after the verification passing information of the access identifier returned by the block chain is obtained, accessing the block chain to manage the contract according to the management requirement includes:

after the verification passing information of the access identifier returned by the block chain is acquired, generating a first management authorization instruction according to the management requirement;

transmitting the first management authorization instruction to the blockchain, wherein the blockchain is used for broadcasting the first management authorization instruction, and the first management authorization instruction is used for authorizing the contract service node to manage the contract.

3. The block chain based contract management method according to claim 1, wherein said obtaining an access identifier when the identity information is verified comprises:

when the identity information passes the verification, transmitting the identity information to a block chain identifier management party;

and acquiring the access identifier returned by the block chain identifier manager, wherein the access identifier is generated according to the identity information.

4. The blockchain-based contract management method according to claim 3, further comprising:

acquiring a proposed contract which is not signed, and acquiring a signature of the contract signing party on the proposed contract;

generating the contract with completed signing according to the proposed contract and the signature of the proposed contract;

after the generating the contract for which the subscription is completed, the method further includes:

linking the contract to the blockchain;

obtaining a deposit certificate number which is returned by the block chain and uniquely corresponds to the contract;

and transmitting the deposit certificate number to a block chain identifier manager, wherein the block chain identifier manager is used for correspondingly storing the deposit certificate number and the access identifier.

5. A block chain-based contract management method is applied to contract service nodes and comprises the following steps:

acquiring a certificate storage number of a contract and acquiring a management requirement of the contract, wherein the certificate storage number is uniquely corresponding to the contract;

acquiring an access identifier corresponding to a contract signing party associated with the contract according to the certificate storing number, wherein the access identifier is used for identifier verification when a block chain is accessed;

transmitting the access identifier to the block chain;

6. The contract management method based on the blockchain according to claim 5, wherein after the verification passing information of the access identifier returned by the blockchain is obtained, the blockchain is accessed to manage the contract according to the management requirement, and the method comprises:

after the verification passing information of the access identifier returned by the block chain is acquired, generating a second management authorization instruction according to the management requirement;

transmitting the second management authorization instruction to the blockchain, wherein the blockchain is used for broadcasting the second management authorization instruction, and the second management authorization instruction is used for authorizing the contract signing node to provide the contract;

and acquiring the contract returned by the block chain, and managing the contract according to the management requirement.

7. The block chain-based contract management method according to claim 5, wherein the acquiring an access identifier corresponding to a contract signing party associated with the contract according to the certificate-holding number includes:

transmitting the certificate storing number to a block chain identifier management party;

and acquiring the access identifier returned by the block chain identifier manager, wherein the block chain identifier manager is used for correspondingly storing the access identifier and the evidence storage number.

8. A contract management method based on a block chain is characterized by being applied to the block chain and comprising the following steps:

acquiring an access identifier transmitted by a contract signing node, and storing the access identifier on the block chain;

acquiring the access identifier transmitted by the contract signing node again, and verifying the acquired access identifier again according to the access identifier stored on the block chain;

and after the access identifier obtained again passes the verification, returning verification passing information of the access identifier to the contract signing node so as to accept the access of the contract signing node.

9. The method according to claim 8, wherein after the reacquired access identifier passes verification and returns verification passing information of the access identifier to the contract signing node, the method further comprises:

acquiring a first management authorization instruction transmitted by the contract signing node;

after the first management authorization instruction is broadcasted on a chain, determining a contract service node indicated by the first management authorization instruction, wherein the first management authorization instruction is used for authorizing the contract service node to manage the contract;

and transmitting the first management authorization instruction to the contract service node.

10. The block chain-based contract management method according to claim 8, further comprising:

acquiring the contract transmitted by the contract signing node;

and generating a certificate storing number which is uniquely corresponding to the contract according to the contract, and returning the certificate storing number to the contract signing node.

11. The block chain-based contract management method according to claim 8, further comprising:

receiving the access identifier transmitted by the contract service node;

verifying the access identifier transmitted by the contract service node according to the access identifier stored on the block chain;

and after the access identifier transmitted by the contract service node passes the verification, returning verification passing information of the access identifier to the contract service node so as to receive the access of the contract service node.

12. The method according to claim 11, wherein after the contract service node returns the verification-passed information of the access identifier to the contract service node after the access identifier transmitted by the contract service node is verified, the method further comprises:

receiving a second management authorization instruction transmitted by the contract service node;

after the second management authorization instruction is broadcasted on the chain, determining a contract signing node indicated by the second management authorization instruction, wherein the second management authorization instruction is used for authorizing the contract signing node to provide the contract;

and acquiring the contract provided by the contract signing node and transmitting the contract signing node to the contract service node.

13. A block chain-based contract management system is characterized by comprising contract signing nodes and block chains;

the contract signing node is used for acquiring identity information of a contract signing party associated with a contract, verifying the identity information, acquiring an access identifier when the identity information is verified, and chaining the access identifier to a block chain, wherein the access identifier is used for identifier verification when the block chain is accessed;

the block chain is used for acquiring an access identifier transmitted by a contract signing node and storing the access identifier on the block chain;

the contract signing node is further configured to retransmit the access identifier to the block chain after acquiring the management requirement of the contract, and access the block chain after acquiring verification passing information of the access identifier returned by the block chain;

the block chain is further configured to acquire the access identifier retransmitted by the contract signing node, verify the reacquired access identifier according to the access identifier stored in the block chain, and return verification passing information of the access identifier to the contract signing node after the reacquired access identifier passes verification.

14. The blockchain-based contract management system of claim 13, further comprising a contract service node;

the contract signing node is configured to generate a first management authorization instruction according to the management requirement after acquiring verification passing information of the access identifier, which is returned by the block chain, and transmit the first management authorization instruction to the block chain, where the first management authorization instruction is used to authorize the contract service node to manage the contract;

the block chain is used for acquiring a first management authorization instruction transmitted by the contract signing node, determining the contract service node indicated by the first management authorization instruction after the first management authorization instruction is broadcasted on the chain, and transmitting the first management authorization instruction to the contract service node;

and the contract service node acquires the first management authorization instruction and manages the contract according to the first management authorization instruction.

15. The blockchain-based contract management system of claim 14, further comprising a blockchain identification manager;

the contract signing node is used for transmitting the identity information to a block chain identifier manager and acquiring the access identifier returned by the block chain identifier manager when the identity information passes verification;

and the block chain identifier management party is used for generating the access identifier according to the identity information and returning the access identifier to the contract signing node.

16. The blockchain-based contract management system of claim 15,

the contract signing node is used for acquiring a proposed contract which is not signed, acquiring a signature of the contract signing party on the proposed contract, generating the contract which is signed according to the proposed contract and the signature of the proposed contract, and linking the contract to the block chain;

the block chain is used for generating a certificate storing number which is only corresponding to the contract according to the contract and returning the certificate storing number to the contract signing node;

the contract signing node is used for acquiring the certificate storing number and transmitting the certificate storing number to the block chain identifier management party;

and the block chain identifier manager is used for correspondingly storing the certificate storage number and the access identifier.

17. The blockchain-based contract management system according to claim 16,

the contract service node is used for acquiring a certificate storing number of a contract, acquiring the management requirement of the contract, acquiring the access identifier corresponding to a contract signing party associated with the contract according to the certificate storing number, and transmitting the access identifier to the block chain;

the block chain is used for receiving the access identifier transmitted by the contract service node, verifying the access identifier transmitted by the contract service node according to the access identifier stored on the block chain, and returning verification passing information of the access identifier to the contract service node after the access identifier transmitted by the contract service node passes the verification;

and the contract service node is used for accessing the block chain after acquiring the verification passing information of the access identifier.

18. The blockchain-based contract management system of claim 17,

the contract service node is configured to generate a second management authorization instruction according to the management requirement after obtaining verification passing information of the access identifier, which is returned by the blockchain, and transmit the second management authorization instruction to the blockchain, where the second management authorization instruction is used to authorize the contract signing node to provide the contract;

the block chain is used for acquiring a second management authorization instruction transmitted by the contract service node, determining the contract signing node indicated by the second management authorization instruction after the second management authorization instruction is broadcasted on the chain, and transmitting the second management authorization instruction to the contract signing node;

and the contract signing node is used for acquiring the second management authorization instruction and providing the contract according to the second management authorization instruction.

19. The blockchain-based contract management system of claim 17,

the contract service node is used for transmitting the certificate storing number to a block chain identifier manager and acquiring the access identifier returned by the block chain identifier manager;

and the block chain identifier management party is used for returning the access identifier stored corresponding to the certificate storing number to the contract service node.

20. A contract signing node apparatus, comprising:

the identity acquisition module is used for acquiring the identity information of a contract signing party associated with a contract and verifying the identity information;

a first identifier obtaining module, configured to obtain an access identifier when the identity information verification passes, and link the access identifier to a block chain, where the access identifier is used for identifier verification when accessing the block chain;

the first identifier application module is used for transmitting the access identifier to the block chain again after acquiring the management requirement of the contract;

and the first processing module is used for accessing the block chain after acquiring the verification passing information of the access identifier returned by the block chain so as to manage the contract according to the management requirement.

21. A contract service node apparatus, comprising:

the system comprises a number acquisition module, a contract management module and a contract management module, wherein the number acquisition module is used for acquiring a certificate storage number of a contract and acquiring the management requirement of the contract, and the certificate storage number is uniquely corresponding to the contract;

a second identifier obtaining module, configured to obtain, according to the certificate storing number, an access identifier corresponding to a contract signing party associated with the contract, where the access identifier is used for identifier verification when accessing a block chain;

the second identification application module is used for transmitting the access identification to the block chain;

and the second processing module is used for accessing the block chain after acquiring the verification passing information of the access identifier returned by the block chain so as to manage the contract according to the management requirement.

22. A blockchain apparatus, comprising:

the acquisition module is used for acquiring the access identifier transmitted by the contract signing node and storing the access identifier on the block chain;

the verification module is used for acquiring the access identifier transmitted by the contract signing node again and verifying the acquired access identifier again according to the access identifier stored on the block chain;

and the information feedback module is used for returning the verification passing information of the access identifier to the contract signing node to receive the access of the contract signing node after the obtained access identifier passes the verification.

23. An electronic device, comprising: the system comprises a processor, a memory and a communication bus, wherein the processor and the memory are communicated with each other through the communication bus;

the memory for storing a computer program;

the processor, configured to execute the program stored in the memory, and implement the block chain-based contract management method according to any one of claims 1 to 4;

or, implementing the blockchain-based contract management method of any one of claims 5 to 7;

or, implementing the blockchain-based contract management method of any one of claims 8 to 12.

24. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the blockchain-based contract management method of any one of claims 1 to 4;

or, the computer program when executed by a processor implements the blockchain-based contract management method of any one of claims 5 to 7;

alternatively, the computer program when executed by a processor implements the blockchain-based contract management method of any one of claims 8 to 12.