CN110175875A - A kind of outdoor advertising acquisition method and device based on block chain - Google Patents
A kind of outdoor advertising acquisition method and device based on block chain Download PDFInfo
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Abstract
The invention discloses a kind of outdoor advertising acquisition methods and device based on block chain, comprising: by advertisement acquisition platform, law enforcement agency and judicial expertise mechanism is respectively each member node in block chain, each member node collectively constitutes alliance's chain；Wherein, advertisement acquisition platform node is configurable for acquisition outdoor advertising sample, constructs advertising copy forensic data；The forensic data is uploaded to block chain；Meanwhile the ad data comprising violation content is pushed to law enforcement agency；Law enforcement agency's node is configured as receiving the ad data comprising violation content, and is handled according to violation degree；Judicial expertise agency node when being configured as in enforcing law generating objection to ad content, carries out judicial expertise.The present invention realizes the trusted storage of outdoor advertising acquisition data, provides reliable judgment basis for law enforcement agency, judicial expertise mechanism.
Description
Technical field
The present invention relates to block chain technical field more particularly to a kind of outdoor advertising acquisition methods and dress based on block chain
It sets.
Background technique
Only there is provided background technical informations related to the present invention for the statement of this part, it is not necessary to so constitute first skill
Art.
Outdoor advertising is the common information transmission media of modern society, and by outdoor advertising, businessman can be the outer of product
It sees the information such as characteristic, effect purposes and quickly passes to consumer, promote purchase.But part businessman can issue to make profit comprising void
Propaganda content, sensitive vocabulary, the illegal advertisement for not meeting correct values.
Inventors have found that after law enfrocement official collects the outdoor advertising sample comprising illegal content, on the one hand by
It is easy in outdoor advertising replacement itself, when being punished to related businessman, it is understood that there may be the phenomenon that denial.On the other hand, due to
The characteristic that electronic evidence is easily distorted, is easily-synthesized, once generating objection in punishment with related businessman, law enfrocement official, which exists, to be difficult to certainly
Demonstrate,prove pure situation.
Summary of the invention
To solve the above-mentioned problems, the present invention proposes a kind of outdoor advertising acquisition method and device based on block chain, area
Block chain is alliance's chain form, and network can be added after being authorized in participant, common to safeguard the operation of block chain.
In some embodiments, it adopts the following technical scheme that
A kind of outdoor advertising acquisition system based on block chain, comprising:
It is described by each member node that advertisement acquisition platform, law enforcement agency and judicial expertise mechanism are respectively in block chain
Each member node collectively constitutes alliance's chain；Wherein,
Advertisement acquisition platform node is configurable for acquisition outdoor advertising sample, constructs advertising copy forensic data；It will
The forensic data is uploaded to block chain；Meanwhile the ad data comprising violation content is pushed to law enforcement agency；
Law enforcement agency's node, be configured as receive include violation content ad data, and according to violation degree at
Reason；
Judicial expertise agency node when being configured as in enforcing law generating objection to ad content, carries out judicial mirror
It is fixed.
As further scheme, the foundation of alliance's chain includes: advertisement acquisition platform, law enforcement agency and judicial expertise
Mechanism secure permission after respectively as member node be added block chain network, block chain network be each member node distribute key and
Certificate constructs the common recognition mechanism in alliance's chain between each member node, creates channel for associated member's node, gives each member node portion
Affix one's name to the relevant intelligent contract of outdoor advertising capturing service logic.
As further scheme, the forensic data is uploaded to block chain by the advertisement acquisition platform node, if depositing
It demonstrate,proves successfully block chain and can return and unique corresponding deposit card number；Each member can carry out verification to outdoor advertising photo in alliance's chain:
It number retrieves corresponding block and obtains by depositing card and deposit card content, the photo hash value of comparison block chain storage and current outdoor wide
The hash value of photo is accused, if they are the same, then returns and is verified as very.It is verified as content one when the true respresentation outdoor advertising photo and shooting
It causes, be not tampered, the evidence that can be used as law enforcement and judicial expertise uses.
In other embodiments, it adopts the following technical scheme that
A kind of outdoor advertising acquisition method based on block chain, comprising:
Outdoor advertising photo is obtained, outdoor advertising forensic data is constructed, outdoor advertising forensic data is uploaded to block chain；
Block chain receive deposit card request after, to outdoor advertising deposit card data carry out depositing card, deposit demonstrate,prove successfully after return uniquely
It is corresponding to deposit card number；
Outdoor advertising picture is analyzed, the content of violation is checked whether there is；If so, the hash value of picture is calculated,
Corresponding block number is retrieved on block chain and is obtained by depositing card and deposit card content, compare the hash value and block chain of above-mentioned calculating
Whether the hash value of the picture of storage is consistent, if unanimously, the advertisement photo is consistent with content when shooting.
In other embodiments, it adopts the following technical scheme that
A kind of outdoor advertising acquisition device based on block chain, comprising:
Apparatus for obtaining evidence, for obtaining outdoor advertising forensic data, the outdoor advertising forensic data includes: outdoor illumination pattern
Piece, the hash value of the picture, the position of advertisement and collecting location, advertisement direction, shooting time, capture apparatus model with
And shooting sequence number information；
First receiving module, for receiving outdoor advertising forensic data；
Second receiving module, for receiving outdoor advertising picture；
Image analysis module, for checking outdoor advertising picture, whether there is or not the contents of violation, and problematic advertisement photo
The law enforcement agency's node being sent in alliance's chain；
Authentication module for calculating hash value to outdoor advertising picture, and deposits card by depositing card number inquiry into block chain
Record, whether the hash value for comparing the hash value stored on block chain and authentication module calculating is identical, and identical, return is tested
Card is true；It otherwise, is false.
In other embodiments, it adopts the following technical scheme that
A kind of terminal device comprising processor and computer readable storage medium, processor is for realizing each instruction；Meter
Calculation machine readable storage medium storing program for executing is suitable for being loaded by processor and being executed above-mentioned based on block for storing a plurality of instruction, described instruction
The outdoor advertising acquisition method of chain.
In other embodiments, it adopts the following technical scheme that
A kind of computer readable storage medium, wherein being stored with a plurality of instruction, described instruction is suitable for by terminal device
Reason device loads and executes the above-mentioned outdoor advertising acquisition method based on block chain.
Compared with prior art, the beneficial effects of the present invention are:
Outdoor advertising acquisition platform, law enforcement agency and judicial expertise mechanism can be connected by alliance's chain, significantly
Simplify the process of outdoor advertising acquisition, monitoring.Advertisement acquisition platform, which collects sample and realizes that height is credible, deposits card, and law enforcement agency receives
Illegal sample is handled, and can submit identification request to judicial expertise mechanism on advertisement acquisition platform when needing,
Judicial expertise mechanism can be quickly obtained photographic evidence by advertisement acquisition platform, take in conjunction with the outdoor advertising stored on block chain
Data are demonstrate,proved, photo opporunity, place, device therefor are verified, compare whether obtained photographic evidence is original photo, provide department in time
Method verified written opinion.
The trusted storage for realizing outdoor advertising acquisition data, provides reliably for law enforcement agency, judicial expertise mechanism
Judgment basis.
Detailed description of the invention
Fig. 1 is the outdoor advertising acquisition method flow chart based on block chain in embodiment one；
Fig. 2 is the outdoor advertising acquisition device schematic diagram based on block chain in embodiment one.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms that the present invention uses have logical with the application person of an ordinary skill in the technical field
The identical meanings understood.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Embodiment one
Block chain is a kind of shared account book technology of multiparty maintenance, using the chain type block knot for having timestamp
Structure storing data, only can increase cannot revise, while based on cryptography and the common recognition technologies such as algorithm, it is established that distributed network
In trusting relationship, it is ensured that the transaction recorded in block chain later can not deny.
In one or more embodiments, a kind of outdoor advertising acquisition system based on block chain is disclosed, comprising: by
Advertisement acquisition platform, law enforcement agency and judicial expertise mechanism are respectively each member node in block chain, each member node
Collectively constitute alliance's chain；Network can be added after being authorized in participant, common to safeguard the operation of block chain.In the present embodiment, connection
The foundation of alliance's chain includes: addition block chain network after each member secures permission, and block chain network is that each member node distributes key
And certificate, the common recognition mechanism in alliance's chain between each member node is constructed, channel is created for associated member's node, gives each member node
Dispose the relevant intelligent contract of outdoor advertising capturing service logic.
Channel is a kind of data isolation mechanism, guarantees that Transaction Information only trades participant as it can be seen that this makes multiple users
The same block catenary system can be shared and do not have to worry information leakage problem.Such as channel 1 relevant to law enforcement agency A,
It is relevant to law enforcement agency B to use channel 2.Law enforcement agency A and law enforcement agency B can't see mutually the case of other side's processing.
Intelligent contract can complete multiple business logic: such as advertisement acquisition evidence obtaining, inquiry, such as electronic bill publication,
Endorsement, inquiry.Outdoor advertisement service is only related in the present invention, so to the node deployment advertisement acquisition for participating in advertisement capturing service
The relevant intelligent contract of business.
Application program mainly provides the background service of user terminal, it is connected in endorsement node and ordering joint and block chain
Network is communicated.For example user initiates transaction motion request to endorsement node by application program, for example application program can root
According to tactful sign test of endorsing, transaction is then generated by verifying, transaction is sent to ordering joint.
In alliance's chain, advertisement acquisition platform is responsible for acquiring outdoor advertising sample, using follow shot equipment to outdoor advertising
The complete photo of high definition is shot, and the longitude and latitude of outdoor advertising, acquisition address, advertisement direction, shooting time, follow shot are set
The details such as the standby hash value of model, sequence number, photo constitute outdoor advertising forensic data and are uploaded to block chain, if depositing card
Success block chain, which can return, unique corresponding deposits card number.
Advertisement acquisition platform will deposit card number and photo uploads to image analysis server together, analyze sample photo
Problematic photo is pushed to law enforcement agency afterwards.Law enforcement agency receives the advertisement comprising illegal content, is disobeyed according to illegal
Regulation degree is handled.Judicial expertise mechanism is responsible for when case generates dispute, both sides have objection to outdoor advertising photo content
Carry out judicial expertise.
Member can carry out verification to outdoor advertising photo at any time in alliance's chain, can retrieve corresponding block by depositing card number
And obtain and deposit card content, the photo hash value of comparison block chain storage and the hash value of current outdoor advertising photo, if they are the same, then
Return is verified as very.Be verified as the true respresentation outdoor advertising photo with shooting when content is consistent, is not tampered, can be used as law enforcement with
The evidence of judicial expertise uses.This function not only realizes proving one's own innocence for law enfrocement official, also facilitates judicial expertise mechanism
Evidence obtaining.
Judicial expertise mechanism can be quickly obtained photographic evidence, in conjunction with the family stored on block chain by advertisement acquisition platform
Outer advertisement forensic data verifies photo opporunity, place, device therefor, compares whether obtained photographic evidence is original photo, and
When provide judicial expertise position paper.
Embodiment two
Alliance's chain based on above-mentioned foundation discloses a kind of family based on block chain in one or more embodiments
Outer advertisement acquisition method, as shown in Figure 1, comprising the following steps:
Step 101, follow shot equipment shoots the complete photo of high definition to outdoor advertising.
Step 102, hash value is calculated to outdoor advertising photo, and obtains longitude and latitude, acquisition address, advertisement direction, shooting
The details such as time, the model of follow shot equipment, sequence number constitute outdoor advertising forensic data.
Step 103, after the completion of outdoor advertising forensic data is collected, advertisement acquisition platform is deposited to the initiation of block chain network at once
Card request.
Step 104, according to depositing, card request constructs transaction motion to application program and the endorsement node into same channel is sent
The motion.
Step 105, endorsement node calls the relevant intelligent contract simulation of outdoor advertising capturing service logic to execute, and to holding
Application program is issued in the signature endorsement of row result.
Step 106, application program can then generate transaction by verifying according to tactful sign test of endorsing, and trade the row of being sent to
Sequence node.
Step 107, ordering joint receives the transaction comprising signing and simulating implementing result, is ranked up and is packaged to transaction
At block, it is broadcast to accounting nodes.
Step 108, accounting nodes verify the validity traded in block, and account book is written after passing through in verification, at this time
Outdoor advertising forensic data, which is deposited, to be demonstrate,proved successfully, and return is uniquely corresponding to deposit card number.
Step 109, the photo of outdoor advertising, unique corresponding card number of depositing are uploaded into image analysis server together.
Step 110, image analysis server can analyze outdoor advertising photo, check for sensitive, violation interior
Hold.
Step 111, outdoor advertising photo problematic for content, image analysis server can calculate it hash value,
And use is deposited card number and is inquired to block chain, and by depositing, card number can retrieve corresponding block and card content, contrast district are deposited in acquisition
The photo hash value of block chain storage and the hash value of current outdoor advertising photo are then returned and are verified as very if they are the same.It is verified as true
Content is consistent, is not tampered when indicating the outdoor advertising photo with shooting, and the evidence that can be used as law enforcement and judicial expertise uses.
After outdoor advertising is taken pictures and calculated, the hash value of captured outdoor advertising photo is uploaded to block chain at once；Figure
Piece analytic process is after uploading block chain, this intermediate picture has the possibility distorted；During picture analyzing, at this time
Outdoor advertising picture calculates hash value comparison stored in hash value, with block chain, as hash value, illustrates that picture does not have
Have and artificially modified.
It should be noted that endorsement node can be led to the format correctness of checking request, the submitter of request currently
Whether road has write permission etc., and simulation executes to deposit to demonstrate,prove and requests (to simulate result when executing and be not written into accounting nodes after being verified
Account book), and signature is carried out to implementing result and returns to application program, application program can be according to tactful sign test (endorsement strategy of endorsing
Transaction could effectively after defining which endorsement node signature endorsement), transaction is then generated by verifying, transaction is sent to sequence
Node.
The transaction that ordering joint sends different application is ranked up, and ultimately produces block, and block is broadcast to note
Account node.
Accounting nodes the validity traded in block is verified (verifying transaction format, if having legitimate signature, if
There are repeat business etc.), account book is written after passing through in verification.Its effect is maintenance status data, saves account book copy.
Embodiment three
In one or more embodiments, a kind of family based on block chain for realizing two the method for embodiment is disclosed
Outer advertisement acquisition device, as shown in Figure 2, comprising:
Apparatus for obtaining evidence 201 for calculating hash value to outdoor advertising photo, and obtains longitude and latitude, acquisition address, advertisement court
To, details such as shooting time, the model of follow shot equipment, sequence number, outdoor advertising forensic data is constituted.
First receiving module 202, for receiving outdoor advertising forensic data.
Second receiving module 203, for receiving outdoor advertising photo.
Image analysis module 204, for checking outdoor advertising photo, whether there is or not illegal contents, and problematic wide
It accuses photo and is sent to related law enforcement agency.
Authentication module 205, alliance's chain each member in inside can calculate hash to outdoor advertising picture by the authentication module
Value, and card record is deposited by depositing card number inquiry into block chain, compare the hash value stored on block chain and the authentication module
Whether the hash value of calculating is identical, identical, and return is verified as true.
Example IV
In one or more embodiments, a kind of terminal device, including server are disclosed, the server includes depositing
Reservoir, processor and storage on a memory and the computer program that can run on a processor, described in the processor execution
The outdoor advertising acquisition method based on block chain in embodiment two is realized when program.For sake of simplicity, details are not described herein.
It should be understood that processor can be central processing unit CPU, and processor can also be that other are general in the present embodiment
Processor, digital signal processor DSP, application-specific integrated circuit ASIC, ready-made programmable gate array FPGA or other are programmable
Logical device, discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor or
The processor is also possible to any conventional processor etc..
Memory may include read-only memory and random access memory, and provides instruction and data to processor, deposits
The a part of of reservoir can also include non-volatile RAM.For example, memory can be with the information of storage device type.
During realization, each step of the above method can by the integrated logic circuit of the hardware in processor or
The instruction of software form is completed.
The method and step in two can be embodied directly in hardware processor and execute completion in conjunction with the embodiments, or use processor
In hardware and software module combination execute completion.Software module can be located at random access memory, flash memory, read-only memory, can
In the storage medium of this fields such as program read-only memory or electrically erasable programmable memory, register maturation.The storage
The step of medium is located at memory, and processor reads the information in memory, completes the above method in conjunction with its hardware.To avoid weight
It is multiple, it is not detailed herein.
Those of ordinary skill in the art may be aware that each exemplary unit, that is, algorithm steps described in conjunction with the present embodiment
Suddenly, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions actually with hardware still
Software mode executes, specific application and design constraint depending on technical solution.Professional technician can be to each
Specific application is to use different methods to achieve the described function, but this realization is it is not considered that exceed the model of the application
It encloses.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (9)
1. a kind of outdoor advertising acquisition system based on block chain characterized by comprising
By each member node that advertisement acquisition platform, law enforcement agency and judicial expertise mechanism are respectively in block chain, it is described respectively at
Member's node collectively constitutes alliance's chain；Wherein,
Advertisement acquisition platform node is configurable for acquisition outdoor advertising sample, constructs advertising copy forensic data；It will be described
Forensic data is uploaded to block chain；Meanwhile the ad data comprising violation content is pushed to law enforcement agency；
Law enforcement agency's node is configured as receiving the ad data comprising violation content, and is handled according to violation degree；
Judicial expertise agency node when being configured as in enforcing law generating objection to ad content, carries out judicial expertise.
2. a kind of outdoor advertising acquisition system based on block chain as described in claim 1, which is characterized in that alliance's chain
Foundation include: after advertisement acquisition platform, law enforcement agency and judicial expertise mechanism secure permission respectively as member node be added
Block chain network, block chain network are that each member node distributes key and certificate, construct being total between each member node in alliance's chain
Knowledge mechanism creates channel for associated member's node, gives each member node deployment outdoor advertising capturing service logic relevant intelligence
Contract.
3. a kind of outdoor advertising acquisition system based on block chain as described in claim 1, which is characterized in that the evidence obtaining number
According to including: advertising copy, advertisement location, advertisement direction, shooting time, capture apparatus model, shooting sequence number and shooting
The hash value information of photo.
4. a kind of outdoor advertising acquisition system based on block chain as described in claim 1, which is characterized in that the advertisement is adopted
Collect platform nodes and the forensic data is uploaded to block chain, is demonstrate,proved number if depositing demonstrate,prove successfully block chain and can return to uniquely corresponding deposit；
Each member can carry out verification to outdoor advertising photo in alliance's chain: by depositing, card number retrieves corresponding block and acquisition is deposited in card
Hold, the photo hash value of comparison block chain storage and the hash value of current outdoor advertising photo are then returned and are verified as if they are the same
Very.
5. a kind of outdoor advertising acquisition method based on block chain characterized by comprising
Outdoor advertising photo is obtained, outdoor advertising forensic data is constructed, outdoor advertising forensic data is uploaded to block chain；
Block chain receive deposit card request after, to outdoor advertising deposit card data carry out depositing card, deposit demonstrate,prove successfully after return uniquely correspond to
Deposit card number；
Outdoor advertising picture is analyzed, the content of violation is checked whether there is；If so, calculating the hash value of picture, pass through
It deposits card and number retrieves corresponding block on block chain and obtain and deposit card content, the hash value and block chain for comparing above-mentioned calculating store
Picture hash value it is whether consistent, if unanimously, the advertisement photo with shooting when content it is consistent.
6. a kind of outdoor advertising acquisition method based on block chain as claimed in claim 5, which is characterized in that block chain is to family
Outer advertisement deposits card data and carries out the method for depositing card are as follows:
Card request is deposited in the initiation of advertisement acquisition platform, and application program requests construction transaction motion and into same channel according to card is deposited
Endorsement node sends the motion；
Node of endorsing calls the relevant intelligent contract simulation of outdoor advertising capturing service logic to execute, and signs and carry on the back to implementing result
Book issues application program；
Application program can then generate transaction by verifying, transaction is sent to ordering joint according to tactful sign test of endorsing.
Ordering joint receives the transaction comprising signing and simulating implementing result, and block is ranked up and be packaged into transaction, broadcasts
To accounting nodes；
Accounting nodes verify the validity traded in block, and account book is written after passing through in verification, the evidence obtaining of outdoor advertising at this time
Data, which are deposited, to be demonstrate,proved successfully.
7. a kind of device for realizing the described in any item outdoor advertising acquisition methods based on block chain of claim 5-6, special
Sign is, comprising:
Apparatus for obtaining evidence, for obtaining outdoor advertising forensic data, the outdoor advertising forensic data include: outdoor illumination picture,
The hash value of the picture, the position of advertisement and collecting location, advertisement direction, shooting time, capture apparatus model and
Shoot sequence number information；
First receiving module, for receiving outdoor advertising forensic data；
Second receiving module, for receiving outdoor advertising picture；
Image analysis module, for checking outdoor advertising picture, whether there is or not the contents of violation, and problematic advertisement photo is sent
To law enforcement agency's node in alliance's chain；
Authentication module for calculating hash value to outdoor advertising picture, and deposits card record by depositing card number inquiry into block chain,
Whether the hash value that the hash value and the authentication module stored on comparison block chain calculates is identical, and identical, return is verified as
Very；It otherwise, is false.
8. a kind of terminal device comprising processor and computer readable storage medium, processor is for realizing each instruction；It calculates
Machine readable storage medium storing program for executing is for storing a plurality of instruction, which is characterized in that described instruction is suitable for by processor load and perform claim
It is required that the described in any item outdoor advertising acquisition methods based on block chain of 5-6.
9. a kind of computer readable storage medium, wherein being stored with a plurality of instruction, which is characterized in that described instruction is suitable for by terminal
Simultaneously perform claim requires the described in any item outdoor advertising acquisition methods based on block chain of 5-6 for the processor load of equipment.
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| CN110716932A (en) * | 2019-09-09 | 2020-01-21 | 平安国际智慧城市科技股份有限公司 | Data processing method, system, device and storage medium |
| CN110908813A (en) * | 2019-11-18 | 2020-03-24 | 深圳前海环融联易信息科技服务有限公司 | Intelligent contract calling method, device, system, computer equipment and storage medium |
| CN111339203A (en) * | 2020-02-28 | 2020-06-26 | 北京金和网络股份有限公司 | Block chain data acquisition method, device and system |
| CN112632305A (en) * | 2021-01-05 | 2021-04-09 | 安徽大学 | Photo file management method and system based on block chain technology |
| CN113763054A (en) * | 2021-09-24 | 2021-12-07 | 支付宝(杭州)信息技术有限公司 | Advertisement verification method and device based on block chain and electronic equipment |
| CN114095174A (en) * | 2021-10-19 | 2022-02-25 | 海南波罗密信息科技有限公司 | Method, device and equipment for acquiring and storing industrial statistical data based on block chain |
| CN114528589A (en) * | 2022-01-26 | 2022-05-24 | 广东南方新视界传媒科技有限公司 | Outdoor media ecological management system and method based on block chain |
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| CN110908813B (en) * | 2019-11-18 | 2022-08-05 | 深圳前海环融联易信息科技服务有限公司 | Intelligent contract calling method, device, system, computer equipment and storage medium |
| CN111339203A (en) * | 2020-02-28 | 2020-06-26 | 北京金和网络股份有限公司 | Block chain data acquisition method, device and system |
| CN112632305A (en) * | 2021-01-05 | 2021-04-09 | 安徽大学 | Photo file management method and system based on block chain technology |
| CN113763054A (en) * | 2021-09-24 | 2021-12-07 | 支付宝(杭州)信息技术有限公司 | Advertisement verification method and device based on block chain and electronic equipment |
| CN114095174A (en) * | 2021-10-19 | 2022-02-25 | 海南波罗密信息科技有限公司 | Method, device and equipment for acquiring and storing industrial statistical data based on block chain |
| CN114095174B (en) * | 2021-10-19 | 2023-11-10 | 海南波罗密信息科技有限公司 | Block chain-based industrial statistical data acquisition and storage method, device and equipment |
| CN114528589A (en) * | 2022-01-26 | 2022-05-24 | 广东南方新视界传媒科技有限公司 | Outdoor media ecological management system and method based on block chain |
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