CN112861080A - Multimedia data management method and device based on block chain - Google Patents

Multimedia data management method and device based on block chain Download PDF

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Publication number
CN112861080A
CN112861080A CN202110349413.0A CN202110349413A CN112861080A CN 112861080 A CN112861080 A CN 112861080A CN 202110349413 A CN202110349413 A CN 202110349413A CN 112861080 A CN112861080 A CN 112861080A
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multimedia
file
blockchain
identifier
data
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黄湘影
岑健明
吴能斌
张志群
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Industrial and Commercial Bank of China Ltd ICBC
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Industrial and Commercial Bank of China Ltd ICBC
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/27Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor

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  • General Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Data Mining & Analysis (AREA)
  • Multimedia (AREA)
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  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
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Abstract

The invention provides a multimedia data management method and a device based on a block chain, which are used in the field of the block chain, in particular to a multimedia service provider node on the block chain, wherein the method comprises the following steps: acquiring a multimedia file uploaded by a user terminal; storing the multimedia file locally and generating a corresponding file identifier, a user identity identifier, a timestamp and file information; combining and encrypting the file identification, the user identity identification, the timestamp and the file information to obtain a characteristic identification; broadcasting the feature identifiers on a block chain. By adopting the technical scheme, the information capable of identifying the multimedia file is uplink-stored, so that a multimedia service provider is ensured not to tamper with the data, and the integrity of the data and the copyright of the multimedia data are ensured.

Description

Multimedia data management method and device based on block chain
Technical Field
The present invention relates to the field of blockchain technologies, and in particular, to a method and an apparatus for managing multimedia data based on blockchains.
Background
Multimedia data (e.g., audio, image, animation) is heavily used and generated every day. For example, an announcing user may view hundreds of millions of hours of video each day. Copyright owners typically enter into copyright agreements with multimedia providers. Therefore, in the multimedia data management community, how to guarantee the copyright of the multimedia data has been a difficult problem for many years. Multimedia data includes text, audio, video, pictures, animation, and the like. Due to the unstructured nature of multimedia files, the underlying multimedia data is stored and transmitted using a centralized architecture. The centralized architecture design can cause a single point of failure while it is difficult to ensure that the multimedia service provider does not tamper with the data. Therefore, it is difficult to guarantee data integrity and copyright of multimedia data.
Disclosure of Invention
In view of the problems in the prior art, the present invention provides a multimedia data management method and apparatus based on a block chain, an electronic device, and a computer-readable storage medium, which can at least partially solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, a method for managing multimedia data based on a blockchain is provided, where the method is used for a multimedia service provider node on the blockchain, and includes:
acquiring a multimedia file uploaded by a user terminal;
storing the multimedia file locally and generating a corresponding file identifier, a user identity identifier, a timestamp and file information;
combining and encrypting the file identification, the user identity identification, the timestamp and the file information to obtain a characteristic identification;
broadcasting the feature identifiers on a block chain.
Further, the multimedia data management method based on the block chain further comprises the following steps:
and carrying out distributed accounting according to the feature identification.
Further, the multimedia data management method based on the block chain further comprises the following steps:
acquiring registration data uploaded by a user terminal;
registering the user terminal according to the registration data;
wherein the registration data comprises: user information, account numbers for receiving and paying.
Further, the multimedia data management method based on the block chain further comprises the following steps:
acquiring multimedia file characteristic identifiers broadcast by other multimedia service provider nodes on a chain;
and carrying out distributed accounting according to the multimedia file characteristic identification.
Further, the multimedia data management method based on the block chain further comprises the following steps:
acquiring a browsing or downloading request of a multimedia file, wherein the browsing or downloading request comprises: multimedia file identification, payment account number and transaction timestamp;
calculating the charging amount according to the multimedia file identifier and a preset charging rule;
broadcasting the transaction timestamp, the payment account number and the charge amount over a blockchain for transmission over the chain to a bank node for deduction.
Further, the browsing or downloading request is encrypted data, and the multimedia data management method further includes:
and decrypting the encrypted data and verifying the legality.
In a second aspect, there is provided a blockchain-based multimedia data management apparatus for a multimedia service provider node on a blockchain, comprising:
the multimedia file acquisition module is used for acquiring a multimedia file uploaded by a user terminal;
the file processing module is used for storing the multimedia file locally and generating a corresponding file identifier, a user identity identifier, a timestamp and file information;
the characteristic identifier generating module is used for carrying out combined encryption on the file identifier, the user identity identifier, the timestamp and the file information to obtain a characteristic identifier;
and the broadcasting module broadcasts the characteristic identifier on the block chain.
Further, the multimedia data management apparatus based on a block chain further includes:
and the accounting module is used for carrying out distributed accounting according to the characteristic identification.
In a third aspect, an electronic device is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the above-mentioned multimedia data management method based on block chains when executing the program.
In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the above-mentioned blockchain-based multimedia data management method.
The multimedia data management method based on the block chain provided by the invention is used for a multimedia service provider node on the block chain, and comprises the following steps: acquiring a multimedia file uploaded by a user terminal; storing the multimedia file locally and generating a corresponding file identifier, a user identity identifier, a timestamp and file information; combining and encrypting the file identification, the user identity identification, the timestamp and the file information to obtain a characteristic identification; broadcasting the feature identifiers on a block chain. By adopting the technical scheme, the information capable of identifying the multimedia file is uplink-stored, so that a multimedia service provider is ensured not to tamper with the data, and the integrity of the data and the copyright of the multimedia data are ensured.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. In the drawings:
FIG. 1 is a block chain structure diagram according to an embodiment of the present invention;
figure 2 shows the structure of a multimedia operator node in an embodiment of the invention;
fig. 3 is a first flowchart illustrating a method for managing multimedia data based on a blockchain according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a second method for managing multimedia data based on blockchains according to an embodiment of the present invention;
FIG. 5 is a third flowchart illustrating a method for managing multimedia data based on blockchains according to an embodiment of the present invention;
fig. 6 shows the contents of step S800 and step S900 in the embodiment of the present invention;
fig. 7 shows the contents of step S1000 and step S1100 in the embodiment of the present invention;
FIG. 8 illustrates a block diagram of an autonomic identity card management system in an embodiment of the present invention;
FIG. 9 is a diagram showing a structure of a multimedia data management system in the embodiment of the present invention;
fig. 10 is a flowchart illustrating a multimedia data upload processing in an embodiment of the present invention;
FIG. 11 is a flow chart illustrating a data access process for a multimedia block chain in an embodiment of the present invention;
fig. 12 is a block diagram of a block chain-based multimedia data management apparatus according to an embodiment of the present invention;
fig. 13 is a block diagram of an electronic device according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
FIG. 1 is a block chain structure diagram according to an embodiment of the present invention; as shown in fig. 1, the blockchain is composed of a plurality of multimedia service provider nodes and a plurality of bank nodes;
the multimedia service provider node is used for receiving and presenting multimedia data, such as: tencent, Aiqiyi, etc., the bank node is used for providing collection business for the multimedia service provider.
The multimedia service provider is responsible for receiving information broadcasted from other service providers, the information comprises a user identity identifier which is unique in the whole network, unique service provider information and a unique multimedia identifier, the browsing or downloading transaction information which is broadcasted by the multimedia provider and received by the bank node comprises a unique transaction timestamp in the whole network, the charging amount of the browsing or downloading transaction and the bank account information corresponding to the user, and the charging amount is calculated according to a preset uniform charging rule in the whole network. When receiving a browse or download transaction request, the multimedia service provider node performs validity verification based on the received information, determines the validity of the browse or download transaction of the request, and initiates a payment request to a corresponding bank node after the verification is passed.
The bank node is responsible for receiving a payment request sent in a multimedia service provider block chain, carrying out validity verification on the payment request based on the transaction request information, returning success to the multimedia service provider after the verification is successful, paying corresponding cost to an account of the multimedia service provider, then carrying out block packaging and whole-network broadcast consensus on the transaction related information, and writing the information into a storage layer after the consensus is successful.
Blockchains are an innovative non-centralized architecture for distributed billing techniques that can share data in a large network without using a centralized system but by a party that can implement multiple untrusted parties. The data structure of the blockchain is composed of blocks, which all retain transaction information. Each block is linked together with a previous block to form a chain. Each block holds information about the transaction, the state of the data. And the intelligent contract is a program defined by a user and is defined and deployed in the blockchain network.
Autonomous identity cards (SSI) are an innovative model application of blockchain autonomous identity cards, with autonomous authentication allowing users to truly own their identity data and be used by themselves without any intermediaries. Since the autonomous identity is indeed consistent with the design of the blockchain. Thus, autonomous identity cards are considered killer applications that apply blockchain techniques. The distributed identification card DID is intended to support personal identification cards, and includes human-readable information and can be used in different platforms.
Figure 2 shows the structure of a multimedia operator node in an embodiment of the invention; referring to fig. 2, the multimedia service provider node includes: the system comprises an autonomous identity card management unit, a multimedia data management unit and an access management unit.
The multimedia data architecture management based on the block chain technology comprises a service layer, a down-chain data layer and an up-chain data layer.
Uplink data layer: the data layer is a block chain network layer and stores the information of the electronic identity card through an intelligent contract and a block chain network.
The data layer under the chain: the data layer is a down-link data layer for storing multimedia data
And (3) a service layer: the service layer provides services for the block chain multimedia management system, and comprises user autonomous identity card management and multimedia data management.
Among them, referring to fig. 8 and 9, the autonomous identity card unit includes: the autonomous identity card registration module is used for the user to apply for the electronic identity card, update the electronic identity card and cancel the electronic identity card; the face recognition module is used for carrying out face recognition on the user; the signing agreement module is used for interactively signing a multimedia service agreement with a registered user; the autonomous identity card management module is used for issuing electronic identity cards and/or certificates.
The multimedia data management unit comprises a protocol generation part, a protocol acquisition part and a protocol destruction part.
Fig. 3 is a first flowchart illustrating a multimedia data management method based on a blockchain according to an embodiment of the present invention, where the multimedia data management method is executed by a multimedia service provider node, and referring to fig. 3, the method may include the following steps:
step S100: acquiring a multimedia file uploaded by a user terminal;
specifically, the user terminal accesses the multimedia service provider node, and uploads a multimedia file, where the multimedia file includes multimedia data (such as a movie, a television show, a small video, and the like) and a user identity, a multimedia data name, attribute information (such as a data size, a format, and the like), and the like.
Step S200: storing the multimedia file locally and generating a corresponding file identifier, a user identity identifier, a timestamp and file information;
specifically, after receiving the multimedia file, the multimedia service provider node locally stores the multimedia file and displays the multimedia file on the server, and in addition, outputs a user identity, an uploaded timestamp, file information and the like according to the multimedia file.
Step S300: combining and encrypting the file identification, the user identity identification, the timestamp and the file information to obtain a characteristic identification;
the parameters capable of identifying the multimedia data are encrypted and combined to obtain the characteristic identification capable of representing the multimedia data, uploading time and an uploader.
Step S400: broadcasting the feature identifiers on a block chain.
The characteristic identification is broadcasted to the blockchain based on an intelligent contract so that each node on the blockchain can receive and account, decentralized storage of the characteristic identification of the multimedia file is achieved, a multimedia service provider is guaranteed not to tamper with data, and data integrity and copyright of the multimedia data are guaranteed.
In an alternative embodiment, referring to fig. 4, the method for managing multimedia data based on a block chain further includes:
step S500: and carrying out distributed accounting according to the feature identification.
Specifically, not only other nodes on the blockchain need to be billed, but also the current node needs to be billed, so as to ensure the unification of the billing data of each node.
In an alternative embodiment, referring to fig. 5, the method for managing multimedia data based on a blockchain further includes:
step S600: acquiring registration data uploaded by a user terminal;
step S700: registering the user terminal according to the registration data;
wherein the registration data comprises: user information, account numbers for receiving and paying.
Specifically, if a user wishes to access the blockchain node, the user needs to register with the blockchain node and enter an account for payment.
In an alternative embodiment, referring to fig. 6, the method for managing multimedia data based on a block chain further includes:
step S800: acquiring multimedia file characteristic identifiers broadcast by other multimedia service provider nodes on a chain;
step S900: and carrying out distributed accounting according to the multimedia file characteristic identification.
Specifically, by adopting the technical scheme, the messages broadcast on the chain by other nodes can be accounted.
In an alternative embodiment, referring to fig. 7, the method for managing multimedia data based on a block chain further includes:
step S1000: acquiring a browsing or downloading request of a multimedia file, wherein the browsing or downloading request comprises: multimedia file identification, payment account number and transaction timestamp;
step S1100: calculating the charging amount according to the multimedia file identifier and a preset charging rule;
step S1200: broadcasting the transaction timestamp, the payment account number and the charge amount over a blockchain for transmission over the chain to a bank node for deduction.
Specifically, when a user needs to browse or download a certain multimedia file, the user request is allowed after deducting the fee in advance, and the public trust can be improved and the problems of charge disorderly and the like can be prevented by broadcasting the charging information on the link.
In an optional embodiment, if the browsing or downloading request is encrypted data, before charging, the encrypted data needs to be decrypted and validity verified before proceeding to the next step.
For a better understanding of the present application, reference is made to fig. 10 and 11 for a supplementary description of the implementation of an embodiment of the present invention:
fig. 10 shows a flow chart of a multimedia data upload processing in an embodiment of the present invention, as shown in fig. 10, including the following steps:
step S501: the multimedia owner applies for the user from the multimedia service provider;
step S502: a service provider acquires a user account and user information;
step S503: the owner uploads a multimedia data channel service provider platform;
step S504: the multimedia service provider stores the multimedia information in a local multimedia database 1, and generates a whole-network unique identification information, a user self-owned identity card unique identification information, a whole-network unique uploading timestamp, a video size and a video duration for the multimedia file to be combined and encrypted.
Step S505: and formally releasing the video file to the APP, and sending the encrypted information obtained in the step S504 to a block chain network for broadcasting.
Fig. 11 shows a data access processing flow diagram of a multimedia block chain in an embodiment of the present invention, which specifically includes the following steps:
step S601: acquiring encrypted transaction information broadcasted by a multimedia service provider;
and the multimedia service provider node receives an access request, wherein the information comprises the network-wide unique identification information of the payment access of the multimedia file, the network-wide unique transaction timestamp, the downloaded multimedia file ID, the access amount, the multimedia owner information and the multimedia service provider 2 information preset by the multimedia owner.
Step S602: decrypting the information and verifying the validity of the information;
the multimedia service provider node decrypts the received information based on a pre-agreed encryption algorithm, and verifies the validity of the information.
Step S603: and sending a transaction request of the payee to the corresponding bank node based on the amount of money in the information and the corresponding bank information.
Specifically, the multimedia service provider node sends a payee transaction request to the corresponding bank node based on the amount recorded in the decrypted received information and the bank information set by the user.
By adopting the technical scheme, the independent identity card management achieves decentralization and protects personal privacy, and no centralized organizer masters personal identity information, so that the personal identity card is ensured to be owned by a multimedia owner.
Through the structure that important information of data on a chain and important information of data under the chain can be stored on the chain, and video and picture information are stored, the privacy of a user follows, and the data of the user, namely the video and picture information cannot be tampered randomly.
The video and the picture can not be stored through the block chain, the block chain self-identity card technology is introduced, the management of the user self-identity card is realized, the copyright of the video and the picture in the system can be stored, other users can not change the video picture without authorization, the privacy of the users can be protected while the users own the self-identity card, and the pictures and the video can be safely accessed.
Service data between a multimedia data service provider and a bank are subjected to data isolation through a block chain data isolation technology, and each block chain user can only access data of an isolation area with corresponding authority, so that the safety and privacy of service account book data are improved. The service data is stored in an encryption protection mode, and even if the database is directly accessed by bypassing the block chain, the service data cannot be accessed.
The algorithm is safe: by adopting the SM2, SM3 and SM4 algorithms, the information of each transaction is encrypted, and besides the encryption in the transmission information, the information of the block chain is also encrypted and stored, so that the multimedia software is ensured not to be tampered.
Based on the same inventive concept, the embodiment of the present application further provides a multimedia data management apparatus based on a block chain, which can be used to implement the methods described in the foregoing embodiments, as described in the following embodiments. Because the principle of solving the problem of the multimedia data management device based on the blockchain is similar to that of the method, the implementation of the multimedia data management device based on the blockchain can refer to the implementation of the method, and repeated details are not repeated. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 12 is a block diagram of a multimedia data management apparatus based on a block chain according to an embodiment of the present invention. As shown in fig. 12, the multimedia data management apparatus based on a block chain specifically includes: a multimedia file acquisition module 10, a file processing module 20, a feature identifier generation module 30 and a broadcast module 40.
The multimedia file obtaining module 10 obtains a multimedia file uploaded by a user terminal;
the file processing module 20 stores the multimedia file locally and generates a corresponding file identifier, a user identity identifier, a timestamp and file information;
the feature identifier generating module 30 performs combination encryption on the file identifier, the user identity identifier, the timestamp and the file information to obtain a feature identifier;
the broadcast module 40 broadcasts the feature identifiers over the blockchain.
The characteristic identification is broadcasted to the blockchain based on an intelligent contract so that each node on the blockchain can receive and account, decentralized storage of the characteristic identification of the multimedia file is achieved, a multimedia service provider is guaranteed not to tamper with data, and data integrity and copyright of the multimedia data are guaranteed.
In an optional embodiment, the multimedia data management apparatus based on a blockchain further includes:
and the accounting module is used for carrying out distributed accounting according to the characteristic identification.
The apparatuses, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or implemented by a product with certain functions. A typical implementation device is an electronic device, which may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
In a typical example, the electronic device specifically includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor executes the program to implement the steps of the above-mentioned multimedia data management method based on block chains.
Referring now to FIG. 13, shown is a schematic diagram of an electronic device 600 suitable for use in implementing embodiments of the present application.
As shown in fig. 13, the electronic apparatus 600 includes a Central Processing Unit (CPU)601 that can perform various appropriate works and processes according to a program stored in a Read Only Memory (ROM)602 or a program loaded from a storage section 608 into a Random Access Memory (RAM)) 603. In the RAM603, various programs and data necessary for the operation of the system 600 are also stored. The CPU601, ROM602, and RAM603 are connected to each other via a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.
The following components are connected to the I/O interface 605: an input portion 606 including a keyboard, a mouse, and the like; an output portion 607 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage section 608 including a hard disk and the like; and a communication section 609 including a network interface card such as a LAN card, a modem, or the like. The communication section 609 performs communication processing via a network such as the internet. The driver 610 is also connected to the I/O interface 605 as needed. A removable medium 611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 610 as necessary, so that a computer program read out therefrom is mounted as necessary on the storage section 608.
In particular, according to an embodiment of the present invention, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, an embodiment of the present invention includes a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the above-described blockchain-based multimedia data management method.
In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 609, and/or installed from the removable medium 611.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A method for managing multimedia data based on a blockchain, the method being used for a multimedia service provider node on the blockchain, and comprising:
acquiring a multimedia file uploaded by a user terminal;
storing the multimedia file locally and generating a corresponding file identifier, a user identity identifier, a timestamp and file information;
combining and encrypting the file identification, the user identity identification, the timestamp and the file information to obtain a characteristic identification;
broadcasting the feature identifiers on a block chain.
2. The method of claim 1, further comprising:
and carrying out distributed accounting according to the feature identification.
3. The method of claim 1, further comprising:
acquiring registration data uploaded by a user terminal;
registering the user terminal according to the registration data;
wherein the registration data comprises: user information, account numbers for receiving and paying.
4. The method of claim 1, further comprising:
acquiring multimedia file characteristic identifiers broadcast by other multimedia service provider nodes on a chain;
and carrying out distributed accounting according to the multimedia file characteristic identification.
5. The method of claim 1, further comprising:
acquiring a browsing or downloading request of a multimedia file, wherein the browsing or downloading request comprises: multimedia file identification, payment account number and transaction timestamp;
calculating the charging amount according to the multimedia file identifier and a preset charging rule;
broadcasting the transaction timestamp, the payment account number and the charge amount over a blockchain for transmission over the chain to a bank node for deduction.
6. The blockchain-based multimedia data management method according to claim 5, wherein the browsing or downloading request is encrypted data, and the multimedia data management method further comprises:
and decrypting the encrypted data and verifying the legality.
7. A blockchain based multimedia data management apparatus for a multimedia service provider node on a blockchain, comprising:
the multimedia file acquisition module is used for acquiring a multimedia file uploaded by a user terminal;
the file processing module is used for storing the multimedia file locally and generating a corresponding file identifier, a user identity identifier, a timestamp and file information;
the characteristic identifier generating module is used for carrying out combined encryption on the file identifier, the user identity identifier, the timestamp and the file information to obtain a characteristic identifier;
and the broadcasting module broadcasts the characteristic identifier on the block chain.
8. The blockchain-based multimedia data management apparatus according to claim 7, further comprising:
and the accounting module is used for carrying out distributed accounting according to the characteristic identification.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method for block chain based multimedia data management according to any of claims 1 to 6 are implemented by the processor when executing the program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for blockchain-based multimedia data management according to any one of claims 1 to 6.
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