CN113901413B - Electronic contract evidence-storing system based on block chain - Google Patents
Electronic contract evidence-storing system based on block chain Download PDFInfo
- Publication number
- CN113901413B CN113901413B CN202111266118.5A CN202111266118A CN113901413B CN 113901413 B CN113901413 B CN 113901413B CN 202111266118 A CN202111266118 A CN 202111266118A CN 113901413 B CN113901413 B CN 113901413B
- Authority
- CN
- China
- Prior art keywords
- contract
- party
- module
- information
- blockchain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- KAICRBBQCRKMPO-UHFFFAOYSA-N phosphoric acid;pyridine-3,4-diamine Chemical compound OP(O)(O)=O.NC1=CC=NC=C1N KAICRBBQCRKMPO-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims description 8
- 238000012790 confirmation Methods 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000012552 review Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 2
- 238000007726 management method Methods 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 1
- 208000025174 PANDAS Diseases 0.000 description 1
- 208000021155 Paediatric autoimmune neuropsychiatric disorders associated with streptococcal infection Diseases 0.000 description 1
- 240000000220 Panda oleosa Species 0.000 description 1
- 235000016496 Panda oleosa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/64—Protecting data integrity, e.g. using checksums, certificates or signatures
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Computer Hardware Design (AREA)
- Health & Medical Sciences (AREA)
- Bioethics (AREA)
- General Health & Medical Sciences (AREA)
- Databases & Information Systems (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses an electronic contract certification system based on a blockchain, and relates to the technical field of electronic contract certification. The intelligent contract system comprises a DAPP module, an intelligent contract module, a third party module and a block chain; the DAPP module comprises a contract creation unit, an invitation joining unit and a voting unit; the contract creation unit is used for creating a management contract by a first party and returning a pair of public key and private key; the invitation joining unit is used for sending the agreement created by the first party to the second party; the intelligent contract module is used for being called by the DAPP module, controlling data streaming on a chain and sending the data of the DAPP to a blockchain for storage; the third party module is used for registering the identity of the user and carrying out identity authentication. The transparency, fairness and fairness of the agreed information are effectively guaranteed, and the trust crisis is eliminated.
Description
Technical Field
The invention belongs to the technical field of electronic contract certification, and particularly relates to an electronic contract certification system based on a block chain.
Background
With the increasing frequency of the evidence of the electronic data in the judicial cases in recent years, the security pressure of the court and the notarization place is increased suddenly, and some folk institutions start to be added into the practical exploration of the evidence security of the electronic data of the third party, and the blockchain technology has paid attention to the third party evidence preserving institutions because of the characteristics of decentralization, common maintenance, reliable data, privacy protection and the like.
When two parties of A and B perform a contract, the contract is often tampered, lost, missed and the like, so that the contract cannot be guaranteed to be fair and fair, and the two parties suffer loss, and therefore, in order to solve the problem, an electronic contract storage system based on a block chain is provided.
Disclosure of Invention
The invention aims to provide an electronic contract certification system based on a blockchain, which solves the problems in the technical background.
In order to solve the technical problems, the invention is realized by the following technical scheme:
The invention relates to an electronic contract storage system based on a block chain, which comprises a DAPP module, an intelligent contract module, a third party module and the block chain;
The DAPP module comprises a contract creation unit, an invitation joining unit and a voting unit;
The contract creation unit is used for creating a management contract by a first party and returning a pair of public key and private key;
the invitation joining unit is used for sending the agreement created by the first party to the second party;
The intelligent contract module is used for being called by the DAPP module, controlling data streaming on a chain and sending the data of the DAPP to a blockchain for storage;
the third party module is used for registering the identity of the user and carrying out identity authentication;
The method for storing the electronic contract further comprises the following steps:
Step one: the first party enters through the DAPP module, inputs identity information, performs identity verification through the third party module, automatically creates a digital identity for the first party, and creates contracted content after returning a pair of public key and private key;
Step two: calling an md5 method of the intelligent contract module, carrying out encryption hash encapsulation on contract information to form a block structure, and broadcasting the block structure to other nodes of the block chain;
step three: the first party sends the established contract connection to the second party, the second party enters the DAPP module through a link, inputs identity information, automatically establishes a digital identity for the second party and returns a pair of public keys and private keys, and the second party confirms whether the contract right and the contract obligation are correct, and joins the contract after the confirmation is finished;
Step four: if the second party fulfills the contract before the contract expires, the notary reviews the contract evidence submitted by the second party, confirms the contract without errors and selects to open the contract, and the first and second parties simultaneously confirm whether the contract without errors, at the moment, the contract information state is marked as fulfilled, after the contract evidence is hashed after the contract information is opened, the information is assembled into blocks through the intelligent combination module and broadcast to other sections;
Step five: if the second party does not fulfill the contract after the contract expires, changing the contract state to 'expired', voting by the notary and the first party, and determining whether the real-name authentication information of the two parties and the contract information need to be uploaded to the judicial office or not through the voting unit, wherein the voting options are 'yes' and 'no', and the voting time is 30 minutes;
if the number of the options is larger than the number of the options, the contracted content and the personal information are hashed, and then the information is sent to a blockchain for storage through the intelligent contract module;
If the number of the options is not more than the number of the options which are yes, the option result needs to be privately agreed by both parties within seven days;
If the agreement is reached, the third party notary performs appointed closing;
if the agreement is not reached, continuing to hash the contract information and the personal information, and then sending the information to a blockchain for storage through the intelligent contract module.
Further, the identity information of the first party and the second party comprises a name, an identity card number and a mobile phone number.
Further, the public key is an account address of the user on the blockchain, and the private key is a unique key for operating the account.
Further, in the third step, after the joining contract is completed, the intelligent contract is automatically executed, the information and the result of the second party are recorded, and the intelligent contract module writes the execution result into the blockchain.
Further, in the fourth step, the other nodes receive the block to verify and confirm the contract information, modify the contract information state to be fulfilled, select whether to close the current contract or not, or if the expiration time is up, automatically close the contract, and modify the contract state to be closed.
The invention has the following beneficial effects:
The invention can ensure that the contracted content can not be modified before the expiration of the contracted time, whether the contracted content is both the contracted parties and the platform or the third party notary, if the contracted is due to expiration of the time due to the reasons of unreliability or the contract is not carried out, the contracted notary can vote in a minority compliance majority to judge whether the contracted information is uploaded to the judicial office, and the judicial office intervenes. The transparency, fairness and fairness of the agreed information are effectively guaranteed, and the trust crisis is eliminated.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block chain based architecture diagram of an electronic contract certification system;
FIG. 2 is a flow chart of the method for storing electronic contract according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention is an electronic contract certification system based on blockchain, which includes a DAPP module, an intelligent contract module, a third party module and a blockchain.
The DAPP module comprises a contract creation unit, an invitation joining unit and a voting unit, and is used for users to autonomously operate the contracted life flow and flow direction.
The contract creation unit is used for creating a management contract for the first party and returning a pair of public keys and private keys.
The invitation joining unit is used for sending the agreement created by the first party to the second party.
The intelligent contract module is used for being called by the DAPP module, controlling data streaming on a chain, and sending the data of the DAPP to the blockchain for storage, so that the blockchain contract data cannot be modified to ensure that the information is reliable, the whole contract data life cycle is traceable, and contract fairness and fairness are effectively ensured.
The third party module is used for registering the identity of the user, carrying out identity authentication and submitting public security bureau authentication service.
The blockchain is used for data storage and authentication, and the operated data is subjected to hash parallel chain storage and authentication through the intelligent contract, so that trusted data is provided for users.
As shown in FIG. 2, the method also comprises an electronic contract certification method, which comprises the following steps:
Step one: the first party enters the DAPP module, inputs information of name, ID card number and mobile phone number, and the intelligent contract module requests the public security bureau or the third party authority to carry out identity authentication. And automatically creating a digital identity for the first party, returning a pair of public key and private key, and entering into the appointment management and creation appointment by the first party, wherein the appointment content comprises appointment titles, appointment parties, appointment expiration time, rights and obligations of the parties, appointment places, mobile phone numbers, names and identity card number information of the parties. The contracted content can be contract, oath, promise, pictures, characters and the like, and the application software can be QQ, weChat, heaven cat, panda and the like.
Step two: calling an md5 method of the intelligent contract module, carrying out encryption hash encapsulation on contract information to form a block structure, and broadcasting the block structure to other nodes of the block chain; after receiving the block structure, other nodes verify the contract information and confirm the contract to agree.
Step three: after the creation is completed, the first party sends the agreed short link to the second party, the second party inputs name, ID card number and mobile phone number information system to request the authority of the third party such as public security bureau to carry out identity authentication after entering Dapp modules through links, and automatically creates digital identity for the second party and returns a pair of public key and private key, and the second party confirms whether the agreed right and obligation are correct or not, and joins the agreement after the confirmation is completed. After the joining contract is completed, the intelligent contract is automatically executed, the information and the result of the second party are recorded, and the intelligent contract module writes the execution result into the block chain. The contract information state is modified to "on" at this point. In order to avoid disputes caused by divergence of contracted content clauses, both parties can invite a third party notary to join the contract by both parties, the third party notary is generated by public security, worker letter, judicial and other mechanism members, the number of notary is limited to be an odd number, and meanwhile, a digital identity is automatically created for a third party authority. The Dapp module may access the contract execution results and view information on the contracted blockchain.
Step four: if the contract is fulfilled before the contract expires, the notary reviews the contract evidence submitted by the second party, confirms the contract without errors and selects to open the contract, and the first party and the second party simultaneously confirm whether the contract without errors, at the moment, mark the contract information state as fulfilled, after the contract evidence hash is completed, the information is assembled into blocks through the intelligent combination module and broadcast to other nodes, so that the other nodes can receive the blocks to verify and confirm the contract information, modify the contract information state as fulfilled, and select whether to close the current contract or not, or the expiration time is up to the time of automatically closing the contract, and modify the contract state as closed.
Step five: if the second party does not fulfill the contract after the contract expires, the contract state is changed into 'expired', and after the notary negotiates with the first party, the voting unit is used for voting to determine whether the real-name authentication information and the contract information of the two parties need to be uploaded to the judicial bureau, the voting options are 'yes' and 'no', and the voting time is 30 minutes.
If the number of the options is larger than the number of the options, the options result is obtained by hashing the contracted content and the personal information, and then the information is sent to the blockchain for storage through the intelligent contract module.
If the number of the No options is larger than the number of the Yes options, the option result needs to be privately agreed by both parties within seven days.
If agreements are made, the third party notary makes an agreed closure.
If the agreement is not reached, continuing to hash the contract information and the personal information, and then sending the information to a blockchain for storage through the intelligent contract module.
The identity information of the first party and the second party comprises a name, an identity card number and a mobile phone number, and the identity of the user is ensured to be real from the source in a real-name authentication mode by using the name, the identity card number and the mobile phone number.
The public key is an account address of a user on the blockchain, and the private key is a unique key for operating the account.
In the third step, after the joining contract is completed, the intelligent contract is automatically executed, the information and the result of the second party are recorded, and the intelligent contract module writes the execution result into the blockchain.
In the fourth step, the other nodes receive the block to verify and confirm the contract information, modify the contract information state to be fulfilled, select whether to close the current contract or not, or automatically close the contract when the expiration time is up, and modify the contract state to be closed.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (5)
1. An electronic contract certification system based on a blockchain is characterized in that: the intelligent contract system comprises a DAPP module, an intelligent contract module, a third party module and a blockchain;
The DAPP module comprises a contract creation unit, an invitation joining unit and a voting unit;
The contract creation unit is used for creating a management contract by a first party and returning a pair of public key and private key;
the invitation joining unit is used for sending the agreement created by the first party to the second party;
The intelligent contract module is used for being called by the DAPP module, controlling data streaming on a chain and sending the data of the DAPP to a blockchain for storage;
the third party module is used for registering the identity of the user and carrying out identity authentication;
The electronic contract certification method of the system comprises the following steps:
Step one: the first party enters through the DAPP module, inputs identity information, performs identity verification through the third party module, automatically creates a digital identity for the first party, and creates contracted content after returning a pair of public key and private key;
Step two: calling an md5 method of the intelligent contract module, carrying out encryption hash encapsulation on contract information to form a block structure, and broadcasting the block structure to other nodes of the block chain;
step three: the first party sends the established contract connection to the second party, the second party enters the DAPP module through a link, inputs identity information, automatically establishes a digital identity for the second party and returns a pair of public keys and private keys, and the second party confirms whether the contract right and the contract obligation are correct, and joins the contract after the confirmation is finished;
Step four: if the second party fulfills the contract before the contract expires, the notary reviews the contract evidence submitted by the second party, confirms the contract without errors and selects to open the contract, and the first and second parties simultaneously confirm whether the contract without errors, at the moment, the contract information state is marked as fulfilled, after the contract evidence is hashed after the contract information is opened, the information is assembled into blocks through the intelligent combination module and broadcast to other sections;
Step five: if the second party does not fulfill the contract after the contract expires, changing the contract state to 'expired', and voting by the notary and the first party, and determining whether the real-name authentication information and the contract information of the two parties need to be uploaded to the judicial bureau or not through the voting unit, wherein the voting options are 'yes' and 'no', and the voting time is 30 minutes;
if the number of the options is larger than the number of the options, the contracted content and the personal information are hashed, and then the information is sent to a blockchain for storage through the intelligent contract module;
If the number of the options is not more than the number of the options which are yes, the option result needs to be privately agreed by both parties within seven days;
If the agreement is reached, the third party notary performs appointed closing;
if the agreement is not reached, continuing to hash the contract information and the personal information, and then sending the information to a blockchain for storage through the intelligent contract module.
2. The blockchain-based electronic contract forensic system according to claim 1 is characterized in that the identity information of the first party and the second party comprises names, identification numbers and mobile phone numbers.
3. The blockchain-based electronic agreement forensic system according to claim 1 wherein the public key is the user's account address on the blockchain and the private key is the only key to operate the account.
4. The blockchain-based electronic contract certification system of claim 1, wherein in the third step, after the joining contract is completed, the intelligent contract is automatically executed, the information and the result of the second party are recorded, and the intelligent contract module writes the execution result into the blockchain.
5. The blockchain-based electronic contract forensic system according to claim 1 in which in step four, other nodes receive blocks to verify and confirm contract information, modify the contract information state to fulfilled, and choose whether to close the current contract or if the expiration time is up, will automatically close the contract, and modify the contract state to "closed".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111266118.5A CN113901413B (en) | 2021-10-28 | 2021-10-28 | Electronic contract evidence-storing system based on block chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111266118.5A CN113901413B (en) | 2021-10-28 | 2021-10-28 | Electronic contract evidence-storing system based on block chain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113901413A CN113901413A (en) | 2022-01-07 |
| CN113901413B true CN113901413B (en) | 2024-06-11 |
Family
ID=79027366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111266118.5A Active CN113901413B (en) | 2021-10-28 | 2021-10-28 | Electronic contract evidence-storing system based on block chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113901413B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110458730A (en) * | 2019-08-01 | 2019-11-15 | 中盾云链(广州)信息科技有限公司 | A kind of personal electric signing system and method based on block chain |
| CN111130751A (en) * | 2019-11-04 | 2020-05-08 | 杭州云萃流图网络科技有限公司 | Appointment information processing method, device and system based on block chain and electronic equipment |
| CN111130770A (en) * | 2019-12-18 | 2020-05-08 | 杭州云萃流图网络科技有限公司 | Block chain based information evidence storage method and system, user terminal, electronic equipment and storage medium |
| KR20200114188A (en) * | 2019-03-28 | 2020-10-07 | 권형석 | Electronic voting method using smart contract based block chain And system |
| WO2021088546A1 (en) * | 2019-11-08 | 2021-05-14 | 蚂蚁区块链科技(上海)有限公司 | Blockchain account-based privacy data query method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018047085A1 (en) * | 2016-09-08 | 2018-03-15 | Thomson Reuters Global Resources Unlimited Company | Systems and methods for providing identity assurance for decentralized applications |
-
2021
- 2021-10-28 CN CN202111266118.5A patent/CN113901413B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200114188A (en) * | 2019-03-28 | 2020-10-07 | 권형석 | Electronic voting method using smart contract based block chain And system |
| CN110458730A (en) * | 2019-08-01 | 2019-11-15 | 中盾云链(广州)信息科技有限公司 | A kind of personal electric signing system and method based on block chain |
| CN111130751A (en) * | 2019-11-04 | 2020-05-08 | 杭州云萃流图网络科技有限公司 | Appointment information processing method, device and system based on block chain and electronic equipment |
| WO2021088546A1 (en) * | 2019-11-08 | 2021-05-14 | 蚂蚁区块链科技(上海)有限公司 | Blockchain account-based privacy data query method and device |
| CN111130770A (en) * | 2019-12-18 | 2020-05-08 | 杭州云萃流图网络科技有限公司 | Block chain based information evidence storage method and system, user terminal, electronic equipment and storage medium |
Non-Patent Citations (1)
| Title |
|---|
| 基于区块链3.0架构的身份认证系统;李嶒;宿州学院学报;20191115(11);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113901413A (en) | 2022-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111970129B (en) | Data processing method and device based on block chain and readable storage medium | |
| CN107231351B (en) | Electronic certificate management method and related equipment | |
| CN112468441B (en) | Cross-heterogeneous-domain authentication system based on block chain | |
| CN110278462A (en) | A kind of mobile film projection authorization management method based on block chain | |
| CN112307125B (en) | Signing method and device for realizing encrypted electronic contract based on blockchain intelligent contract | |
| CN111737352B (en) | Supply chain information collaborative management method based on block chain | |
| CN112202612B (en) | Block link point management method, storage medium, node and block chain system | |
| WO2022152008A1 (en) | Cross-chain collaborative governance system and method, and device and storage medium | |
| CN114579943A (en) | Employee digital identity management system and method based on block chain | |
| CN111510298A (en) | Cross-domain trusted data exchange method and system based on block chain | |
| WO2023115850A1 (en) | Consortium blockchain consensus identity authentication method | |
| CN114205136A (en) | Traffic data resource sharing method and system based on block chain technology | |
| CN112822178A (en) | Business cooperative data sharing and privacy protection method based on block chain | |
| CN111221914A (en) | Data exchange sharing tracing method based on block chain | |
| WO2021252297A1 (en) | Blockchain driven embedded video and digital signatures on signed documents | |
| CN115065480A (en) | Electronic contract system and signing method based on block chain certificate storage | |
| CN113901413B (en) | Electronic contract evidence-storing system based on block chain | |
| CN114401091A (en) | Device cross-domain authentication management method and device based on block chain | |
| CN104639328B (en) | A kind of GOOSE message authentication method and system | |
| CN113239409A (en) | Block chain-based steel structure traceability system and method | |
| Datta | Security analysis of network protocols: Compositional reasoning and complexity-theoretic foundations | |
| CN116614519A (en) | Video and related information lightweight trusted uplink method based on optimization consensus algorithm | |
| Wu et al. | Redactable consortium blockchain based on verifiable distributed chameleon hash functions | |
| Drăgan et al. | Bootstrapping online trust: Timeline activity proofs | |
| AU2019201432A1 (en) | A system, method, computer program and data signal for creating, executing and verifying an electronic agreement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |