CN112668989B - Electronic contract signing method based on blockchain technology - Google Patents
Electronic contract signing method based on blockchain technology Download PDFInfo
- Publication number
- CN112668989B CN112668989B CN202011444862.5A CN202011444862A CN112668989B CN 112668989 B CN112668989 B CN 112668989B CN 202011444862 A CN202011444862 A CN 202011444862A CN 112668989 B CN112668989 B CN 112668989B
- Authority
- CN
- China
- Prior art keywords
- contract
- signing
- parties
- user
- picture
- 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
- 238000000034 method Methods 0.000 title claims abstract description 76
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 238000011084 recovery Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000012795 verification Methods 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Landscapes
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention relates to the technical field of blockchain, in particular to an electronic contract signing method based on the blockchain technology, which comprises the following steps of A) providing blank contracts, hash algorithms and contract signing operation interfaces for two parties; b) Extracting blank contract hash values; c) The two parties respectively operate a contract signing operation interface to obtain contract filling results, and respectively form operation process files; d) Comparing the contract filling results of the two parties; e) Signing the contract filling results by the two parties respectively, extracting hash values of the operation process files respectively, and extracting the hash values of the contract filling results after signing by the two parties; f) And (5) storing the hash values of the files in a chain manner, and completing signing of the electronic contract. The invention has the beneficial effects that: the electronic contract signing method by using the blockchain technology can solve the problem of lack of safety in traditional paper contract signing, can ensure consistency of the contracts of the two parties, and has confidentiality in storing the electronic contract.
Description
Technical Field
The invention relates to the technical field of blockchain, in particular to an electronic contract signing method based on a blockchain technology.
Background
With the development of internet technology and the perfection of corresponding laws and regulations, electronic contracts are beginning to be widely used. Traditional electronic contract management modes often rely on third party servers, data centers, etc., with security being primarily dependent on the company trustworthiness of the third party electronic contract service provider. The data is stored in a third party in a centralized way, and if the third party violates a contract or the data system is attacked, the data can pose a great threat to the privacy of the user.
Chinese patent, publication No. CN110084072A, publication No. 2019, publication No. 08 and publication No. 02, disclose an electronic contract on-line verification method based on a blockchain network, carry on-line verification to the electronic contract through a blockchain system platform, users upload the electronic contract file to the blockchain system platform, the blockchain system obtains the first hash value of uploading the electronic contract file through calculating, find and match the first hash value of the electronic contract file of the blockchain system in the blockchain network with the first hash value of uploading the electronic contract file obtained, and obtain the verification result message sent by the blockchain network. By adopting the technical scheme, the electronic contract can be verified on line by utilizing the first hash value of the electronic contract.
Disclosure of Invention
In order to solve the technical problem of low safety of online signing of electronic contracts, the invention provides an electronic contract signing method based on a blockchain technology.
The invention solves the technical problems by adopting the following scheme: an electronic contract signing method based on a blockchain technology,
a) Providing blank contracts, hash algorithms and contract signing operation interfaces for the two parties;
b) The two parties respectively extract blank contract hash values by using a hash algorithm and store the blank contract hash values in respective local areas;
c) The two parties respectively operate a contract signing operation interface, fill in the contents to be filled in the contract to obtain a contract filling result, and the contract signing operation interface records the respective mouse and keyboard operations simultaneously and respectively forms an operation process file;
d) Comparing the contract filling results of the two parties, if the comparison results are consistent, entering the step E), otherwise, re-executing the step C);
e) Signing the contract filling results by the two parties respectively, extracting hash values of the operation process files respectively, and extracting the hash values of the contract filling results after signing by the two parties;
f) And (3) storing the blank contract hash value, the contract filling result hash value signed by the two parties and the operation process file hash values of the two parties in a chain manner, and completing signing of the electronic contract.
And the users of the two parties complete signing of the electronic contract through an operation contract signing interface, and the hash value of the electronic blank contract is extracted and stored before. The user signature is obtained after the comparison of the contract filling results of the two parties has no obvious difference, and the contract filling result hash value after the two party signature and the operation process file hash value of the two parties are extracted. And finally uploading the hash value of the blank contract, the hash value of the contract filling result after signing by the two parties and the hash value of the operation process file of each of the two parties to the blockchain node for storage, and completing the signing process of the electronic contract.
The method ensures the authenticity of the electronic contracts of the two parties of the user by comparing the operation process of signing the electronic contracts of the two parties of the user with the contract filling result, extracts the hash value of the blank contract, the hash value of the contract filling result after signing the two parties and the hash value of the operation process file of each of the two parties for uplink storage, and ensures the safety of the electronic contracts.
Preferably, the contract signing interface in step a) includes: the electronic contract display device comprises a contract display area, a submitting button, a resetting button and an information prompt area, wherein the contract display area is used for displaying an electronic contract document and a character input box, the submitting button is used for submitting and uploading after the electronic contract signing operation is completed, and the resetting button is used for recovering the electronic contract to a blank contract.
Preferably, the method of forming the operation procedure file in the step C) includes:
c1 Record the user mouse operation process: recording click action information, drag information and movement information of user mouse operation as a mouse operation sequence, wherein the click action information comprises a click key value, a click coordinate position and a click time stamp, the drag information comprises drag start and stop point coordinates and drag time stamps corresponding to the drag start and stop points, when the mouse is not clicked to move, the mouse pointer coordinates are recorded at a set frequency and are associated with the time stamps to form a pointer coordinate sequence, the pointer coordinate sequence forms movement information, and the click time stamp and the drag time stamp both use contract signing operation interface construction completion time as a time starting point;
c2 Record the user keyboard operation process: recording keyboard input characters and associating character time stamps to form a keyboard input sequence, wherein the character time stamps take the construction completion time of a contract signing operation interface as a time starting point;
c3 Encrypting the mouse operation sequence and the keyboard input sequence to generate an operation process file.
And (3) recording mouse and keyboard operations of users of both sides in the process of signing the electronic contract, adding a time stamp, generating respective operation process files of both sides, and uploading to the comparison node.
Preferably, the method for comparing the results of the two contracts in the step D) comprises the following steps:
d1 Uploading the respective operation process files to the comparison node by the two parties;
d2 The virtual machine is constructed by the comparison nodes, the virtual machine loads operation process files of the two parties respectively, recovers the respective operation processes of the two parties according to the mouse and keyboard operation processes recorded by the operation process files, and records the results of the two recovery;
d3 Comparing the two restored results, if the similarity of the two restored results exceeds the set threshold, judging that the compared results are consistent, and entering the step E), otherwise, re-executing the step C).
And constructing a virtual machine on the comparison node, and restoring operation process files of the users of the two parties through the virtual machine. Checking the similarity of the restoration results, and if the similarity is higher than a set threshold value, describing the reliability and the authenticity of the operation process files loaded by the virtual machine.
Preferably, in step D2), the result of the two restorations is recorded in the form of a picture;
in step D3), the method for comparing the results of the two restorations comprises:
d31 Presetting an information window covering a position where a user is required to fill in a blank contract;
d32 Calculating the similarity of the two restoration result pictures in the information window;
d33 If the lowest value of the similarity of all the information windows exceeds the set threshold, the comparison result is consistent, the step E) is carried out, otherwise, the step C) is re-executed.
And comparing the contract filling results of the two parties, so as to prevent the inconsistent filling contents of the parts to be filled in the two parties in the contracts.
Preferably, in step C), the contract signing operation interface periodically records the operation result of the user on the blank contract in the form of a picture, and as a check point picture, associates the check point picture with the latest user keyboard or mouse operation;
in step D2), the virtual machine generates a corresponding checkpoint recovery picture according to the latest user keyboard or mouse operation associated with the checkpoint picture, compares the checkpoint recovery picture with the checkpoint picture, if the comparison is consistent, continues to recover the user operation, otherwise, terminates the recovery operation, notifies the user of failure in recovery, and returns to step C).
And periodically recording the electronic contract operation result of the user on the contract signing interface, and taking the recorded electronic contract operation result of the user as a check point picture. The electronic contract displayed in the form of the picture can more accurately reflect the reliability of the user operation recovered by the virtual machine.
Preferably, in step C), the contract signing operation interface further provides a manual generation check point button, when the user clicks the manual generation check point button, the operation result of the user on the blank contract is recorded in a picture form to be used as a check point picture, and the user clicks the manual generation check point button to be used as an associated operation of the manual check point picture.
The manually generated checkpoints are selected based on important information subjectively considered by the user on the electronic contract, and more accurate contract signing interface operation result confirmation means is provided for the user.
Preferably, the method for manually generating the important check point comprises the following steps:
a coverage window for filling in a position required by a user in a coverage blank contract is preset:
marking positions needing to be filled by users in a blank contract, constructing a coverage window for each position needing to be filled, and recording the position and the size of the coverage window of each position needing to be filled;
when a user clicks a manual generation check point button, capturing picture information in the coverage window as a check point picture;
the collection of checkpoint pictures is taken as an important checkpoint.
By carrying out similarity monitoring on the picture information of each filling position of the electronic contract, the higher accuracy of the electronic contracts of the clients of the two parties can be ensured.
The invention has the beneficial effects that: the electronic contract signing method by using the blockchain technology can solve the problem of lack of safety in traditional paper contract signing, can ensure consistency of the contracts of the two parties, and has confidentiality in storing the electronic contract.
Drawings
Fig. 1 is a flowchart of an electronic contract signing method according to the first embodiment.
Fig. 2 is a schematic diagram of a contract signing operation interface in accordance with the first embodiment.
Fig. 3 is a flowchart of the result of contract filling for a pair of comparison parties according to an embodiment.
100, a contract signing interface, 101, a contract display area, 102, a reset button, 103, a submit button, 104 and an information prompt area.
Detailed Description
Embodiment one:
a method for signing an electronic contract based on a blockchain technology, as shown in fig. 1, comprises the following steps,
the two parties are provided with a blank contract, a hash algorithm, and a contract signing operations interface 100.
And respectively extracting blank contract hash values by the two parties by using a hash algorithm, and storing the blank contract hash values in respective local areas.
The two parties respectively operate a contract signing operation interface, fill in the contents to be filled in the contract to obtain a contract filling result, and the contract signing operation interface records the respective mouse and keyboard operations simultaneously and respectively forms an operation process file.
The contract signing operation interface periodically records the operation result of the user on the blank contract in the form of pictures, and the operation result is used as a check point picture, and the check point picture is associated with the latest user keyboard or mouse operation. The contract signing operation interface also provides a manual generation check point button, when the user clicks the manual generation check point button, the operation result of the user on the blank contract is recorded in a picture form to serve as a check point picture, and the user clicks the manual generation check point button to serve as the association operation of the manual check point picture. The method for manually generating the important check points comprises the following steps: a coverage window for filling in a position required by a user in a coverage blank contract is preset: marking positions needing to be filled by users in a blank contract, constructing a coverage window for each position needing to be filled, and recording the position and the size of the coverage window of each position needing to be filled; when a user clicks a manual generation check point button, capturing picture information in the coverage window as a check point picture; the collection of checkpoint pictures is taken as an important checkpoint.
The method for forming the operation process file comprises the following steps:
c1 Record the user mouse operation process: recording click action information, drag information and movement information of user mouse operation as a mouse operation sequence, wherein the click action information comprises a click key value, a click coordinate position and a click time stamp, the drag information comprises drag start and stop point coordinates and drag time stamps corresponding to the drag start and stop points, when the mouse is not clicked to move, the mouse pointer coordinates are recorded at a set frequency and are associated with the time stamps to form a pointer coordinate sequence, the pointer coordinate sequence forms movement information, and the click time stamp and the drag time stamp all use the time of construction completion of a contract signing operation interface as a time starting point.
C2 Record the user keyboard operation process: recording keyboard input characters and associating character time stamps to form a keyboard input sequence, wherein the character time stamps take the construction completion time of the contract signing operation interface as a time starting point.
C3 Encrypting the mouse operation sequence and the keyboard input sequence to generate an operation process file.
Comparing the contract filling results of the two parties, if the comparison results are consistent, entering the step E), otherwise, re-executing the step C).
As shown in fig. 3, the method for comparing the results of the two contracts includes:
d1 Both parties upload respective operation process files to the comparison node.
D2 The virtual machine is constructed by the comparison nodes, the virtual machine loads operation process files of the two parties respectively, recovers the respective operation processes of the two parties according to the mouse and keyboard operation processes recorded by the operation process files, and records the results of the two recovery in the form of pictures.
The virtual machine generates a corresponding check point restoration picture according to the latest user keyboard or mouse operation associated with the check point picture, compares the corresponding check point restoration picture with the check point picture, if the comparison is consistent, continues restoring the user operation, otherwise, terminates the restoration operation, notifies the user of restoration failure, and returns to the step C).
D3 Comparing the two restored results, if the similarity of the two restored results exceeds the set threshold, judging that the compared results are consistent, and entering the step E), otherwise, re-executing the step C).
The method for comparing the results of the two restorations comprises the following steps:
d31 Presetting an information window covering a position where a user is required to fill in a blank contract;
d32 Calculating the similarity of the two restoration result pictures in the information window;
d33 If the minimum value of the similarity of all the information windows exceeds the set threshold, judging that the comparison results are consistent, entering the step E), otherwise, re-executing the step C)
Signing the contract filling results by the two parties respectively, extracting hash values of the operation process files respectively, and extracting the hash values of the contract filling results after signing by the two parties.
And (3) storing the blank contract hash value, the contract filling result hash value signed by the two parties and the operation process file hash values of the two parties in a chain manner, and completing signing of the electronic contract.
As shown in fig. 2, in the present embodiment, the contract signing interface 100 includes: contract display area 101, submit button 103, reset button 102, and information prompt area 104. The contract display area 101 is used for displaying an electronic contract document and a character input box, the submit button 103 is used for submitting and uploading after the electronic contract signing operation is completed, and the reset button 102 is used for recovering the electronic contract to a blank contract.
The above-described embodiment is only a preferred embodiment of the present invention, and is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.
Claims (6)
1. A signing method of electronic contract based on block chain technology is characterized in that,
a) Providing blank contracts, hash algorithms and contract signing operation interfaces for the two parties;
b) The two parties respectively extract blank contract hash values by using a hash algorithm and store the blank contract hash values in respective local areas;
c) The two parties respectively operate a contract signing operation interface, the contents to be filled in the contract are filled in, a contract filling result is obtained, the contract signing operation interface simultaneously records the respective mouse and keyboard operations, and the operation process files are respectively formed, and the method comprises the following steps:
c1 Record the user mouse operation process:
recording click action information, drag information and movement information of user mouse operation as a mouse operation sequence, wherein the click action information comprises a click key value, a click coordinate position and a click time stamp, the drag information comprises drag starting point coordinates and drag time stamps corresponding to the drag starting point and the drag ending point, when the mouse is not clicked to move, the mouse pointer coordinates are recorded with set frequency and associated with the time stamps to form a pointer coordinate sequence, the pointer coordinate sequence forms movement information, and the click time stamp and the drag time stamp both take the construction completion time of a contract signing operation interface as a time starting point;
c2 Record the user keyboard operation process:
recording keyboard input characters and associating character time stamps, and forming a keyboard input sequence, wherein the character time stamps take the construction completion time of a contract signing operation interface as a time starting point;
c3 Encrypting the mouse operation sequence and the keyboard input sequence to generate an operation process file;
d) Comparing the contract filling results of the two parties, if the comparison results are consistent, entering the step E), otherwise, re-executing the step C), wherein the comparison method comprises the following steps:
d1 Uploading the respective operation process files to the comparison node by the two parties;
d2 The virtual machine is constructed by the comparison nodes, the virtual machine loads operation process files of the two parties respectively, recovers the respective operation processes of the two parties according to the mouse and keyboard operation processes recorded by the operation process files, and records the results of the two recovery;
d3 Comparing the results of the two restoration, if the similarity of the two restoration results exceeds a set threshold, judging that the comparison results are consistent, and entering the step E), otherwise, re-executing the step C);
e) Signing the contract filling results by the two parties respectively, extracting hash values of the operation process files respectively, and extracting the hash values of the contract filling results after signing by the two parties;
f) And (3) storing the blank contract hash value, the contract filling result hash value signed by the two parties and the operation process file hash values of the two parties in a chain manner, and completing signing of the electronic contract.
2. The method for signing an electronic contract based on blockchain technology as in claim 1, wherein,
the contract signing operation interface in the step A) comprises the following steps: the electronic contract signing system comprises a contract display area, a submitting button, a resetting button and an information prompt area, wherein the contract display area is used for displaying an electronic contract document and a character input frame, the submitting button is used for submitting and uploading after the electronic contract signing operation is completed, and the resetting button is used for recovering the electronic contract to a blank contract.
3. The method for signing an electronic contract based on blockchain technology as in claim 1, wherein,
in the step D2), recording the result of the two restoration in the form of a picture;
in step D3), the method for comparing the results of the two restorations comprises:
d31 Presetting an information window covering a position where a user is required to fill in a blank contract;
d32 Calculating the similarity of the two restoration result pictures in the information window;
d33 If the lowest value of the similarity of all the information windows exceeds the set threshold, the comparison result is consistent, the step E) is carried out, otherwise, the step C) is re-executed.
4. The method for signing an electronic contract based on blockchain technology as in claim 1, wherein,
in the step C), the contract signing operation interface periodically records the operation result of the user on the blank contract in the form of pictures, and the operation result is used as a check point picture to associate the check point picture with the nearest user keyboard or mouse operation;
in step D2), the virtual machine generates a corresponding checkpoint recovery picture according to the latest user keyboard or mouse operation associated with the checkpoint picture, compares the checkpoint recovery picture with the checkpoint picture, if the comparison is consistent, continues to recover the user operation, otherwise, terminates the recovery operation, notifies the user of failure in recovery, and returns to step C).
5. The method for signing an electronic contract based on blockchain technology as in claim 4, wherein,
in the step C), the contract signing operation interface also provides a manual generation check point button, when the user clicks the manual generation check point button, the operation result of the user on the blank contract is recorded in a picture form to be used as a check point picture, and the user clicks the manual generation check point button to be used as the association operation of the manual check point picture.
6. A method of signing an electronic contract based on blockchain technology as in claim 3, wherein the method of manually generating an important checkpoint comprises:
a coverage window for filling in a position required by a user in a coverage blank contract is preset:
marking positions needing to be filled by users in a blank contract, constructing a coverage window for each position needing to be filled, and recording the position and the size of the coverage window of each position needing to be filled;
when a user clicks a manual generation check point button, capturing picture information in the coverage window as a check point picture;
the collection of checkpoint pictures is taken as an important checkpoint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011444862.5A CN112668989B (en) | 2020-12-11 | 2020-12-11 | Electronic contract signing method based on blockchain technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011444862.5A CN112668989B (en) | 2020-12-11 | 2020-12-11 | Electronic contract signing method based on blockchain technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112668989A CN112668989A (en) | 2021-04-16 |
| CN112668989B true CN112668989B (en) | 2024-04-16 |
Family
ID=75402059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011444862.5A Active CN112668989B (en) | 2020-12-11 | 2020-12-11 | Electronic contract signing method based on blockchain technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112668989B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114491462B (en) * | 2022-02-10 | 2023-07-18 | 重庆傲雄在线信息技术有限公司 | Method, system, equipment and storage medium for signing multiple electronic files at one time |
| CN114792270B (en) * | 2022-06-27 | 2022-09-23 | 浙江数秦科技有限公司 | Loan contract online signing system based on block chain |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610578A (en) * | 2016-01-25 | 2016-05-25 | 杭州复杂美科技有限公司 | Block chain information archiving and privacy protection method |
| CN109639651A (en) * | 2018-11-22 | 2019-04-16 | 安云印(天津)大数据科技有限公司 | Contract based on living body authentication and block chain technology signs authentication method and its system online |
| CN111898991A (en) * | 2020-08-03 | 2020-11-06 | 深圳市大中华区块链科技有限公司 | Block chain-based official seal management method and system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113537984A (en) * | 2018-06-26 | 2021-10-22 | 创新先进技术有限公司 | Content verification method and device based on block chain and electronic equipment |
-
2020
- 2020-12-11 CN CN202011444862.5A patent/CN112668989B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610578A (en) * | 2016-01-25 | 2016-05-25 | 杭州复杂美科技有限公司 | Block chain information archiving and privacy protection method |
| CN109639651A (en) * | 2018-11-22 | 2019-04-16 | 安云印(天津)大数据科技有限公司 | Contract based on living body authentication and block chain technology signs authentication method and its system online |
| CN111898991A (en) * | 2020-08-03 | 2020-11-06 | 深圳市大中华区块链科技有限公司 | Block chain-based official seal management method and system |
Non-Patent Citations (3)
| Title |
|---|
| A highly trusted demand response system based on block-chain;Feixiang Gong等;《 2020 Asia Energy and Electrical Engineering Symposium (AEEES)》;20200717;第1024-1027页 * |
| 区块链与未来法治;郑戈;《东方法学》;20180510;第75-86页 * |
| 基于SimpleChain Beta的跨链交互与持续稳态思考;俞学劢;《信息化建设》;20191115;第54-56页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112668989A (en) | 2021-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109257340B (en) | Website tamper-proof system and method based on block chain | |
| CN112668989B (en) | Electronic contract signing method based on blockchain technology | |
| CN109543065B (en) | Video active identification method combined with block chain | |
| CN110490004B (en) | Processing method of electronic signature file, client, computer equipment and medium | |
| CN110535660A (en) | A kind of evidence obtaining service system based on block chain | |
| CN103348325A (en) | Data loss monitoring of partial data streams | |
| CN104541266A (en) | Mechanism for synchronising devices, system and method | |
| CN111814141B (en) | Off-line process evidence obtaining and storing method based on block chain | |
| CN108629637A (en) | electronic invoice processing system and electronic invoice processing method | |
| CN107231370A (en) | A kind of data monitoring method based on cloud computing | |
| CN111339040A (en) | Cloud storage method, device, equipment and storage medium for data files | |
| CN116015945A (en) | Electronic file secure transmission method, system and medium based on electronic signature | |
| CN112579958B (en) | Webpage conversion method, webpage conversion device, computer equipment and readable storage medium | |
| CN112231771B (en) | Block chain-based electronic contract online signing and security method | |
| US20180295145A1 (en) | Multicomputer Digital Data Processing to Provide Information Security Control | |
| CN112905935A (en) | Page recording method, page recording animation generation method, equipment and storage medium | |
| CN104935436A (en) | User verification method and user verification system | |
| CN104519054A (en) | Digital signature method, device and system | |
| CN113111283B (en) | Forensic server, forensic server method, storage medium, and program product | |
| CN112668990B (en) | Electronic contract online signing method based on process deposit certificate | |
| CN109040781A (en) | Video authentication method, device, system, electronic equipment and readable medium | |
| CN114020191A (en) | Operation video generation method and device of service page, computer equipment and medium | |
| WO2019123798A1 (en) | Data management system | |
| CN107231369A (en) | A kind of efficient data processing method based on cloud computing | |
| CN112668991B (en) | High-confidentiality electronic contract signing and verifying method |
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 |