KR102142259B1 - System for distribution of content files using smart contract based on block chain and method thereof - Google Patents

Abstract

The present invention relates to a content file distribution system and method using a blockchain-based smart contract, and processes a large amount of data transaction details in an off-blockchain network based on an on-off hybrid blockchain network. By recording only the total result on the on-blockchain network at a time, it is possible to increase the number of transactions that can be processed per second, enabling real-time stable distribution of large-scale data, as well as rewarding according to the transmission contribution, so that anyone can participate as a sender. And it can provide a distribution structure that can earn profits through it.

Description

Content file distribution system using blockchain-based smart contract and its method {SYSTEM FOR DISTRIBUTION OF CONTENT FILES USING SMART CONTRACT BASED ON BLOCK CHAIN AND METHOD THEREOF}

The present invention relates to a large-capacity content file distribution system and method using a blockchain-based smart contract, and to a computer-readable recording medium recording a program for executing the same.

Recently, Block Chain technology is a technology in which all nodes connected to the network share the same ledger.If a hacker tries to alter the transaction details recorded in the ledger, there is a difficulty in altering all the shared ledgers. impossible. Thus, the data recorded on the blockchain becomes reliable.

By recording the distribution history of content on such a reliable blockchain ledger, it is possible to build an ecosystem where all parties participating in content distribution can trust each other and share profits. Therefore, there is an effect that content creators can obtain a fair profit.

However, the problem in distributing large amounts of data with the existing blockchain technology is that the number of transactions that can be processed per second is limited, and the maximum data size that can be transmitted at one time is limited.

Domestic registered patent No. 10-1344828 (announced on December 26, 2013)

The present invention was conceived to solve the above-described problem, and an object of the present invention is to process a large amount of data transaction details in an off-blockchain network based on an on-off hybrid blockchain network, and the total result By recording the number of million to the on-blockchain network at once, it is possible to increase the number of transactions that can be processed per second, thereby enabling real-time stable distribution of large-scale data, as well as enabling compensation according to the transmission contribution, so that anyone can participate as a sender. It is to provide a content file distribution system and its method using a blockchain-based smart contract that can provide a distribution structure that can generate profits.

In order to achieve the above object, the first aspect of the present invention is the first smart contract information for registering a content file, second smart contract information for storing the content file, and a third smart contract for distributing content files. A file producer node for transmitting information; A file provider node collecting and storing content files from the file producer node and transmitting fourth smart contract information for supplying content files; A file distributor node that provides a service for distribution or sale of content files stored in the file provider node; Based on the service provided from the file distributor node, a specific content file is purchased according to the file use contract information with the file distributor node and the fifth smart contract information for purchasing a specific content file is transmitted, and the file A file user node that receives a specific content file from a file provider node that has a smart contract with the distributor node; And the file producer node, the file provider node, the file distributor node, and the file user node connected to each other through a blockchain network, and transmitted from the file producer node, the file provider node, and the file user node. It is to provide a content file distribution system using a blockchain-based smart contract including a file manager node that registers 1 to 5 smart contract information on at least one distributed blockchain ledger.

Here, it is preferable that the first smart contract information transmitted from the file producer node includes file producer information data for registration of a corresponding content file and information data related to a corresponding content file.

Preferably, the second smart contract information transmitted from the file producer node may include file storage contract information data with the file provider node for storage of a corresponding content file.

Preferably, the third smart contract information transmitted from the file producer node may include file distribution contract information data with the file distributor node for distribution of a corresponding content file.

Preferably, the fourth smart contract information transmitted from the file provider node may include file supply contract information data with the file distributor node for supplying a corresponding content file.

Preferably, the fifth smart contract information transmitted from the file user node may include file use contract information data with the file distributor node for purchase and use of a corresponding content file.

Preferably, the file provider node may collect content files generated from the file producer node and store it in a separate file storage in a database (DB) for each file producer node or for each content file.

Preferably, the file manager node receives each of the first to fifth smart contract information transmitted from the file producer node, the file provider node, and the file user node, and receives a database (DB) for each file producer node or for each content file. ) To be stored and managed.

Preferably, the file manager node receives information data on purchase and use of a specific content file from the file user node, and processes the purchase price for a specific content file based on the first to fifth smart Service can be provided to settle profits according to contract information.

Preferably, the file manager node encrypts information on the corresponding content file transmitted from the file producer node, the file provider node, and the file user node and registers it in at least one distributed blockchain ledger, and the corresponding content file It is possible to provide a service so that at least one distributed blockchain ledger in which information about is encrypted and registered is shared with a plurality of other file manager nodes connected to each other in the blockchain network.

Preferably, the blockchain network may have a structure in which at least one distributed blockchain ledger in which information on a corresponding content file is encrypted and registered is distributed and stored in a blockchain storage in a blockchain storage of each file manager node.

Preferably, the file producer node may transmit a file discard request message for discarding a corresponding content file in the file manager mode.

Preferably, the file manager mode is provided with a file discard request message for the corresponding content file transmitted from the file producer node, and changes the contents registered in at least one distributed blockchain ledger so that the corresponding content file cannot be used. And, it is possible to provide a service so that the changed at least one distributed blockchain ledger is shared with a plurality of other file manager nodes connected to each other in the blockchain network.

Preferably, the file manager mode includes a file provider node connected to each other through a blockchain network so that the corresponding content file can be discarded based on receiving a file discard request message for the corresponding content file transmitted from the file producer node, and The file distributor node can transmit a file discard request message for the content file.

Preferably, the blockchain network may consist of an on-blockchain network in a state that is always connected to the network so that transaction information for transactional content files can be generated at any time and recorded in at least one distributed blockchain ledger. have.

Preferably, the file producer node generates at least one content file, receives a unique content ID from the file manager node for each generated content file, and watermarks a unique content ID corresponding to each content file. In addition, after encryption using a symmetric key and requesting verification of a corresponding content file to the file manager node, the corresponding content file may be requested to be registered as the file manager node according to the verification result.

Preferably, the file user node interlocks with the file distributor node or the file provider node to transmit a specific content file when receiving a specific content file from a file provider node with a file supply contract with the file distributor node. File transfer service option selected by the file user through one tracker peer node that has information data for and a number of contribution peer nodes that are distributed and stored as a number of content partial files According to (Option), a specific content file can be used by receiving all of a plurality of content partial files through a peer to peer (P2P) communication method.

Preferably, the tracker peer node includes hash information data for a specific content file, a seeder address list information data having the entire specific content file, and a richer partially having a specific content file. (Leacher) It may include information data for transmission of a specific content file consisting of address list information data.

Preferably, the file transfer service option is a network transmission rate option for selecting contributing peer nodes in the order of speed according to the network speed, and a transmission cost option for first selecting contributing peer nodes that are subscribed for free regardless of the network speed. Or, at least one service option among the sender reliability options that first selects contributing peer nodes with high reliability of the sender.

Preferably, the file user node, when receiving all of the plurality of content partial files from the plurality of contributing peer nodes, generates the transmission transaction result information data for a specific content file and at least one connected to each other through a blockchain network. Can be transferred to the file manager node of.

Preferably, the file manager node provides a copyright cost for the file producer node, a supply cost for the file provider node, and the file distributor node based on the first to fifth smart contract information for a specific content file. A service may be provided to settle the file license cost, which is a sales cost for the file, and the file transfer cost paid to the actual file sender nodes according to the transmission contribution rate of a specific content file.

Preferably, the file user node, when receiving and using a specific content file from a file provider node that has a file supply contract with the file distributor node, generates the file reproduction result information data for the specific content file, and the file manager Can be transmitted to the node.

Preferably, the file producer node, the file provider node, the file distributor node, the file user node, and the file manager node may be formed of at least one of a module, a device, a terminal, or a server.

Preferably, the blockchain network connected to each other between the file producer node, the file provider node, the file distributor node, and the file user node is connected to the network only when the corresponding content file is transmitted, and transaction information data for the corresponding content file transaction Is generated and recorded on at least one distributed blockchain ledger.

A second aspect of the present invention is a method for distributing content files using a system connected to each other with a file producer node, a file provider node, a file distributor node, a file user node, and a file manager node through a blockchain network, (a) The file manager node provides first smart contract information for registering content files, second smart contract information for storing content files, and third smart contract information for distributing content files through the file producer node. Transferring to; (b) collecting and storing the content file in step (a) through the file provider node, and transmitting fourth smart contract information for supplying the content file to the file manager node; (c) providing a service for distribution or sale of the content file stored in the step (b) through the file distributor node; (d) Based on the service provided in the step (c) through the file user node, a request for purchasing a specific content file as well as purchasing a specific content file according to the file use contract information with the file distributor node 5 transmitting smart contract information to the file manager node, and receiving a specific content file from the file distributor node and the smart contracted file provider node; And (e) registering the first to fifth smart contract information transmitted in steps (a), (b) and (d) to at least one distributed blockchain ledger through the file manager node. It is to provide a content file distribution method using a blockchain-based smart contract.

Here, in the step (a), the first smart contract information preferably includes file producer information data for registration of the corresponding content file and information data related to the corresponding content file, and the second smart contract information includes the corresponding content It is preferable to include file storage contract information data with the file provider node for storing the file, and the third smart contract information includes file distribution contract information data with the file distributor node for distribution of the corresponding content file. It is desirable to do.

Preferably, in step (b), the fourth smart contract information may include file supply contract information data with the file distributor node for supplying a corresponding content file.

Preferably, in step (d), the fifth smart contract information may include file use contract information data with the file distributor node for purchase and use of a corresponding content file.

Preferably, in the step (b), the file provider node collects the content files generated from the file producer node in the step (a) and stores a database (DB) for each file producer node or for each content file in a separate file storage. You can save it.

Preferably, before or after the step (e), the first to fifth smart contract information transmitted in the steps (a), (b), and (d) through the file manager node is stored for each file producer node. Alternatively, it may further include storing and managing a database (DB) for each content file.

Preferably, after step (e), when information data on purchase and use of a specific content file is received from the file user node through the file manager node, information on purchase and use of a specific content file It may further include providing a service to settle profits according to the first to fifth smart contract information along with processing a purchase price for a specific content file based on the data.

Preferably, the step (e) is at least one distributed blockchain ledger by encrypting the information on the content file transmitted in the step (a), step (b), and step (d) through the file manager node. After registration in, the service can be provided so that information on the corresponding content file is encrypted and registered at least one distributed blockchain ledger is shared with a plurality of other file manager nodes connected to each other in the blockchain network.

Preferably, the blockchain network may have a structure in which at least one distributed blockchain ledger in which information on a corresponding content file is encrypted and registered is distributed and stored in a blockchain storage in a blockchain storage of each file manager node.

Preferably, after the step (e), (f) transmitting a file discard request message for discarding a corresponding content file to the file manager mode through the file producer node; And (g) changing the contents registered in at least one distributed blockchain ledger to prevent use of the corresponding content file based on the file discard request message for the corresponding content file transmitted in step (f) through the file manager mode. Thereafter, the method may further include providing a service to share the changed at least one distributed blockchain ledger with a plurality of other file manager nodes connected to each other in the blockchain network.

Preferably, after step (g), based on the file discard request message for the content file transmitted in step (f) through the file manager mode, the content file can be discarded through a blockchain network. The method may further include transmitting a file discard request message for a corresponding content file to a file provider node and a file distributor node connected to each other.

Preferably, the blockchain network may consist of an on-blockchain network in a state that is always connected to the network so that transaction information for transactional content files can be generated at any time and recorded in at least one distributed blockchain ledger. have.

Preferably, prior to the step (a), at least one content file is generated through the file producer node, and a unique content ID is issued from the file manager node for each generated content file to correspond to each content file. In addition to watermarking the unique content ID that is created, the file manager node requests verification of the content file by encrypting it using a symmetric key, and then requests registration of the content file as the file manager node according to the verification result. It may further include steps.

Preferably, in the step (d), when a specific content file is received from a file provider node that has a file supply contract with the file distributor node through the file user node, it is interlocked with the file distributor node or the file provider node. File users through one tracker peer node with information data for the transmission of specific content files and multiple contribution peer nodes that are distributed and stored in a number of content partial files According to the file transfer service option selected by, a specific content file can be used by receiving all of a plurality of content partial files through a peer to peer (P2P) communication method.

Preferably, the tracker peer node includes hash information data for a specific content file, a seeder address list information data having the entire specific content file, and a richer partially having a specific content file. (Leacher) It may include information data for transmission of a specific content file consisting of address list information data.

Preferably, the file transfer service option is a network transmission rate option for selecting contributing peer nodes in the order of speed according to the network speed, and a transmission cost option for first selecting contributing peer nodes that are subscribed for free regardless of the network speed. Or, at least one service option among the sender reliability options that first selects contributing peer nodes with high reliability of the sender.

Preferably, when a plurality of content partial files are all transmitted from a plurality of contributing peer nodes through the file user node, at least one connected to each other through a blockchain network by generating transmission transaction result information data for a specific content file. Can be transferred to the file manager node of.

Preferably, after the step (e), the copyright cost for the file producer node and the supply to the file provider node based on the first to fifth smart contract information for a specific content file through the file manager node. Providing a service to settle the file license cost consisting of the cost, and the selling cost to the file distributor node, and the file transfer cost paid to the actual file sender nodes according to the transmission contribution rate of the specific content file. I can.

Preferably, after step (d) or step (e), when a specific content file is received and used from a file provider node that has a file supply contract with the file distributor node through the file user node, a specific content file It may further include a first step of generating the file reproduction result information data for and transmitting it to the file manager node.

Preferably, the file producer node, the file provider node, the file distributor node, the file user node, and the file manager node may be formed of at least one of a module, a device, a terminal, or a server.

Preferably, the blockchain network connected to each other between the file producer node, the file provider node, the file distributor node, and the file user node is connected to the network only when the corresponding content file is transmitted, and transaction information data for the corresponding content file transaction Is generated and recorded on at least one distributed blockchain ledger.

A third aspect of the present invention provides a computer-readable recording medium in which a program capable of executing a content file distribution method using the above-described blockchain-based smart contract is recorded.

The content file distribution method using a blockchain-based smart contract according to the present invention may be implemented as a computer-readable code on a computer-readable recording medium. The computer-readable recording medium includes all types of recording devices that store data that can be read by a computer system.

For example, computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, hard disk, floppy disk, removable storage device, and non-volatile memory. And optical data storage devices.

According to the content file distribution system and method using a block chain-based smart contract of the present invention as described above, a large amount of data transaction details are off-blockchain based on an on-off hybrid block chain network. By processing in the network and recording only the total result on the on-blockchain network at once, it is possible to increase the number of transactions that can be processed per second to enable real-time stable distribution of large-scale data, as well as compensation according to the contribution of transmission, so that anyone There is an advantage of providing a distribution structure that can participate as a sender and earn profits through it.

1 is an overall block diagram illustrating a content file distribution system using a blockchain-based smart contract according to an embodiment of the present invention.
2 is a block diagram illustrating a content file transmission process between a file user node and a file provider node applied to an embodiment of the present invention.
3 is a diagram illustrating a block chain structure applied to an embodiment of the present invention.
4 is a conceptual diagram for explaining a smart contract using a block chain technology applied to an embodiment of the present invention.
5 and 6 are overall flowcharts for explaining a content file distribution method using a blockchain-based smart contract according to an embodiment of the present invention.

The above-described objects, features, and advantages will be described in detail below with reference to the accompanying drawings, and accordingly, a person skilled in the art to which the present invention pertains can easily implement the technical spirit of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, a detailed description will be omitted.

Terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component. The terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

Terms used in the present invention have selected general terms that are currently widely used as possible while taking functions of the present invention into consideration, but this may vary according to the intention or precedent of a technician working in the field, the emergence of new technologies, and the like. In addition, in certain cases, some terms are arbitrarily selected by the applicant, and in this case, their meanings will be described in detail in the description of the applicable invention. Therefore, the term used in the present invention should be defined based on the meaning of the term and the contents of the present invention, rather than a simple term name.

When a certain part of the specification "includes" a certain component, this means that other components may be further included instead of excluding other components unless otherwise specified. In addition, terms such as “... unit” and “module” described in the specification mean a unit that processes at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments of the present invention exemplified below may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. The embodiments of the present invention are provided to more completely describe the present invention to those of ordinary skill in the art.

Combinations of each block of the attached block diagram and each step of the flowchart may be executed by computer program instructions (execution engine), and these computer program instructions are used on a processor of a general purpose computer, special purpose computer or other programmable data processing equipment. As it can be mounted, its instructions executed by the processor of a computer or other programmable data processing equipment generate means for performing the functions described in each block of the block diagram or each step of the flowchart. These computer program instructions can also be stored in computer readable or computer readable memory that can be oriented to a computer or other programmable data processing equipment to implement a function in a particular way, so that computer readable or computer readable memory The instructions stored in it are also possible to produce an article of manufacture containing instructions means for performing the functions described in each block of the block diagram or in each step of the flowchart.

In addition, since computer program instructions can be mounted on a computer or other programmable data processing equipment, a series of operation steps are performed on a computer or other programmable data processing equipment to create a process that is executed by a computer, It is also possible for instructions to perform possible data processing equipment to provide steps for performing the functions described in each block of the block diagram and each step of the flowchart.

In addition, each block or each step can represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical functions, and in some alternative embodiments referred to in blocks or steps It should be noted that it is also possible for functions to occur out of sequence. For example, two blocks or steps shown in succession may in fact be executed substantially simultaneously, and it is also possible that the blocks or steps are performed in the reverse order of the corresponding function as necessary.

1 is an overall block diagram illustrating a content file distribution system using a blockchain-based smart contract according to an embodiment of the present invention, and FIG. 2 is a file user node and a file provider applied to an embodiment of the present invention. A block diagram for explaining the content file transfer process between nodes, FIG. 3 is a diagram for explaining a block chain structure applied to an embodiment of the present invention, and FIG. 4 is a block chain technology applied to an embodiment of the present invention. It is a conceptual diagram to explain the smart contract using.

First, hereinafter, the word "at least one" is defined as a term that can refer to the singular and plural. And, although the term "at least one" may be used, it may be omitted, but the meaning is as described above.

1 to 4, the content file distribution system using a blockchain-based smart contract according to an embodiment of the present invention is largely at least one file producer node (100-1 to 100-N), at least one Of the file provider nodes (200-1 to 200-N), at least one file distributor node (300-1 to 300-N), at least one file user node (400-1 to 400-N), and at least one File manager nodes 500-1 to 500-N are included. On the other hand, since the components shown in FIGS. 1 to 4 are not essential, the content file distribution system using a blockchain-based smart contract according to an embodiment of the present invention has more or fewer components. You can also have them.

Hereinafter, components of a content file distribution system using a blockchain-based smart contract according to an embodiment of the present invention will be described in detail.

Each file producer node (100-1 to 100-N) is each file provider node (200-1 to 200-N), each file distributor node (300) through the blockchain network (10-1 and/or 10-2). -1 to 300-N), each file user node 400-1 to 400-N, and/or each file manager node 500-1 to 500-N are connected to each other.

Each of these file producer nodes 100-1 to 100-N includes first smart contract information for registration of at least one content file, second smart contract information for storage of at least one content file, and/or at least one It performs a function of transmitting the third smart contract information for distribution of the content file of the file manager nodes 500-1 to 500-N.

In addition, the first smart contract information transmitted from each file producer node (100-1 to 100-N) includes, for example, file producer information data (eg, file producer ID information, etc.) for registration of each content file and the corresponding content file. It is preferable to include related information data (eg, a hash value of the content file, basic metadata, basic selling price information, etc.).

In addition, the second smart contract information transmitted from each file producer node (100-1 to 100-N) includes, for example, a file storage contract with each file provider node (200-1 to 200-N) for storage of each content file. It is preferable to include information data (eg, content ID, content file producer ID, content file provider ID, storage contract period, settlement rate, provision capacity and condition information, etc.).

In addition, the third smart contract information transmitted from each file producer node (100-1 to 100-N) includes, for example, a file distribution contract with each file distributor node (300-1 to 300-N) for distribution of each content file. It is preferable to include information data (eg, content ID, content file producer ID, content file distributor ID, distribution contract period, settlement rate, promotion method, content file price, ownership information, etc.).

In addition, each file producer node (100-1 to 100-N) generates at least one content file, and for each created content file, a unique content ID from each file manager node (500-1 to 500-N) (Content ID, CID) is issued, a unique content ID corresponding to each content file is watermarked and encrypted using a symmetric key (e.g., CEK (Content Encryption Key, etc.)) to each file manager node ( 500-1 to 500-N), and then transfer the content file to each file manager node (500-1 to 500-N) according to the verification result (i.e., upon completion of verification approval). You can perform the function of requesting registration.

That is, each file producer node (100-1 to 100-N) generates at least one content file, and includes each file producer information data and information related to each content file for registration of each generated content file. 1 Second smart contract information with a preset file provider node (200-1 to 200-N) for storing each content file along with smart contract information and a preset file distributor node 300-1 for distribution of each content file To 300-N) to each file manager node 500-1 to 500-N.

In addition, each file producer node 100-1 to 100-N may perform a function of transmitting a file discard request message for discarding each content file to each file manager mode 500-1 to 500-N. .

On the other hand, each content file generated from each file producer node 100-1 to 100-N is, for example, a digital data file of at least one of a video data file, an image data file, an audio data file, and/or a document data file. It is desirable to be done.

And, each file provider node (200-1 to 200-N) is each file producer node (100-1 to 100-N), each file distributor node through the blockchain network (10-1 and/or 10-2) (300-1 to 300-N), each file user node (400-1 to 400-N), and/or each file manager node (500-1 to 500-N) are connected to each other.

Each of these file provider nodes (200-1 to 200-N) collects and stores each content file from each file producer node (100-1 to 100-N), and fourth smart contract information for supplying each content file To each file manager node 500-1 to 500-N.

In addition, the fourth smart contract information transmitted from each file provider node (200-1 to 200-N) includes, for example, a file supply contract with each file distributor node (300-1 to 300-N) for supplying each content file. It is preferable to include information data (eg, content ID, content file provider ID, content file distributor ID, supply contract period, settlement rate, etc.).

That is, each file provider node (200-1 to 200-N) receives the fourth smart contract information with the preset file distributor nodes (300-1 to 300-N) for supplying each content file to each file manager node (500). -1 to 500-N).

In addition, each file provider node (200-1 to 200-N) collects each content file generated from each file producer node (100-1 to 100-N), based on this in a separate file storage (not shown). It is possible to perform a function of storing a database (DB) for each file producer node and/or for each content file.

And, each file distributor node (300-1 to 300-N) is each file producer node (100-1 to 100-N), each file provider node through the blockchain network (10-1 and/or 10-2) (200-1 to 200-N), each file user node (400-1 to 400-N), and/or each file manager node (500-1 to 500-N) are connected to each other.

Each of these file distributor nodes 300-1 to 300-N includes at least one transmission channel for transmitting each content file stored in the file storage of each file provider node 200-1 to 200-N. It performs a function of providing a service for distribution and/or sale of each content file through each transmission channel.

In addition, each file distributor node (300-1 to 300-N) is a fifth smart device including file use contract information data with each file user node (400-1 to 400-N) for purchase and use of each content file. The contract information may be transmitted to each of the file manager nodes 500-1 to 500-N.

And, each file user node (400-1 to 400-N) is each file producer node (100-1 to 100-N), each file provider through the blockchain network (10-1 and/or 10-2) Nodes 200-1 to 200-N, each file distributor node 300-1 to 300-N, and/or each file manager node 500-1 to 500-N are connected to each other.

Each of these file user nodes (400-1 to 400-N) is a file with each file distributor node (300-1 to 300-N) based on the services provided from each file distributor node (300-1 to 300-N) In addition to purchasing a specific content file according to the usage contract information, the fifth smart contract information for purchasing a specific content file is transmitted to each file manager node 500-1 to 500-N, and each file distributor node ( 300-1 to 300-N) performs a function of receiving a specific content file from the smart contracted file provider nodes 200-1 to 200-N.

In addition, the fifth smart contract information transmitted from each file user node (400-1 to 400-N) includes, for example, a file with each file distributor node (300-1 to 300-N) for purchase and use of the corresponding content file. It is preferable to include the usage contract information data (eg, content ID, content file user ID, content file distributor ID, content file price and payment, content file usage period and usage method information, etc.).

In addition, each file user node (400-1 to 400-N) is a specific content from each file distributor node (300-1 to 300-N) and file provider nodes (200-1 to 200-N) with a file supply contract. When a file is received, it is linked with each file distributor node (300-1 to 300-N) and/or each file provider node (200-1 to 200-N) to have information data for transmission of a specific content file. Files through one tracker peer node (TP) and a number of contribution peer nodes (CP-1 to CP-N) that are distributed and stored as a number of content partial files According to the file transfer service option selected by the user, that is, the file user nodes 400-1 to 400-N, a specific content file is received by receiving all of the plurality of content partial files through a peer to peer (P2P) communication method. You can perform the functions you use.

Here, the tracker peer node (TP) partially has hash information data for a specific content file, seeder address list information data having the entire specific content file, and a specific content file. It is preferable to include information data for transmission of a specific content file consisting of the Leacher address list information data.

On the other hand, the file transfer service option is, for example, a network transmission rate option that selects contributing peer nodes (CP-1 to CP-N) in order of speed according to the network speed, and is subscribed for free regardless of the network speed. Among the transmission cost options for selecting the contributing peer nodes (CP-1 to CP-N) first, and/or the sender reliability options for selecting the contributing peer nodes (CP-1 to CP-N) with high reliability of the sender first It is preferable to consist of at least one service option.

On the other hand, in an embodiment of the present invention, a tracker peer node (TP) is separately provided, but the present invention is not limited thereto, and all functions of the tracker peer node (TP) are provided without the tracker peer node (TP). (200-1 to 200-N) and/or each file distributor node 300-1 and/or 300-N may be implemented to perform.

In addition, each file user node (400-1 to 400-N) transmits a specific content file when all of the plurality of content partial files are transmitted from a plurality of contributing peer nodes (CP-1 to CP-N). A function of generating transaction result information data and transmitting it to each of the file manager nodes 500-1 to 500-N connected through the blockchain network 10-1 and/or 10-2 may be performed.

At this time, the transmission transaction result information data for a specific content file generated from each file user node 400-1 to 400-N is, for example, a Merkle tree for a specific content file acquired using the Merkle Hash Tree algorithm. Merkle Tree) It is desirable to include the final transmission transaction details information data together with the root hash value.

In other words, each file user node (400-1 to 400-N) is based on an on-off hybrid blockchain network, that is, a blockchain network (10-1 and 10-2). Data transaction details (e.g., transmission transaction result information for a specific content file) are processed in the off-blockchain network 10-2, and only the total result (e.g., final transmission transaction details information, etc.) is on-blocked. By recording it in the chain network (10-1) at once, it is possible to increase the number of transactions that can be processed per second, enabling real-time stable distribution of large-capacity content files, as well as rewarding according to the contribution of the transmission, so that anyone can participate as a sender. There is an effect of providing a distribution structure that can obtain profits through this.

At this time, the ON-blockchain network (10-1) refers to a block chain network structure that is always connected to the network so that transactions occur at any time and can be recorded in a distributed blockchain ledger. And, OFF-blockchain network (10-2) does not need to be connected to the network all the time, it is connected only when the content file is transferred to transfer the content file, and only when the content file is transferred, partial file transfer for the content file It refers to a blockchain network structure in which transactions (or microtransactions) can be recorded.

That is, when all of the content files have been transferred, an overall completed transaction (eg, information on the final transfer transaction details, etc.) occurs, and this is recorded in the ON-blockchain network 10-1.

Meanwhile, each file producer node (100-1 to 100-N), each file provider node (200-1 to 200-N), each file distributor node (300-1 to 300-N), and/or each file user Blockchain networks 10-1 and/or 10-2 connected to each other between nodes 400-1 to 400-N are connected to the network only when each content file is transmitted, and transaction information data for each content file transaction is generated. And it is preferable to be made of an off-blockchain network (10-2), which is a state that can record this in at least one distributed blockchain ledger.

In addition, each file user node (400-1 to 400-N) is a specific content from each file distributor node (300-1 to 300-N) and file provider nodes (200-1 to 200-N) with a file supply contract. When a file is received and used, a function of generating file reproduction result information data for a specific content file and transmitting it to each file manager node 500-1 to 500-N may be performed.

In addition, each of the file user nodes 400-1 to 400-N generates information data on the purchase and use of the specific content file when purchasing and using a specific content file, and converts it to each file manager node 500-1 to 400-N. 500-N) can be performed.

And, each file manager node (500-1 to 500-N) is each file producer node (100-1 to 100-N), each file provider node through the blockchain network (10-1 and/or 10-2) (200-1 to 200-N), each file distributor node (300-1 to 300-N), and/or each file user node (400-1 to 400-N) are connected to each other.

Each of these file manager nodes (500-1 to 500-N) is each file producer node (100-1 to 100-N), each file provider node (through the blockchain network 10-1 and/or 10-2) 200-1 to 200-N), and/or receiving the first to fifth smart contract information for each content file transmitted from each file user node (400-1 to 400-N) and using at least one distributed block It performs the function of recording and/or registering in the Distributed Block Chain Ledger.

In addition, each file manager node (500-1 to 500-N) is each file producer node (100-1 to 100-N), each file provider node (200-1 to 200-N), and/or each file user A function of encrypting information (eg, first to fifth smart contract information, etc.) for each content file transmitted from nodes 400-1 to 400-N, and recording and/or registering it in at least one distributed blockchain ledger Can be done.

In addition, each file manager node (500-1 to 500-N) stores at least one distributed blockchain ledger in which information on each content file is encrypted and recorded and/or registered, and the blockchain network 10-1 and/or 10 -2) That is, the ON-blockchain network 10-1 may perform a function of providing a service to be shared with a plurality of other file manager nodes 500-1 to 500-N connected to each other.

At this time, the blockchain network 10-1 and/or 10-2, that is, the ON-blockchain network 10-1, encrypts information on each content file to record and/or register at least one The distributed blockchain ledger can be distributed and stored in a block chain storage (not shown) of each file manager node (500-1 to 500-N) in the form of a block chain.

In addition, the blockchain network (10-1 and/or 10-2), that is, the ON-blockchain network (10-1) is always connected to the network, and transaction information data for each content file transaction occurs at any time. And it can be recorded in at least one distributed blockchain ledger.

In addition, the blockchain networks 10-1 and/or 10-2 may consist of, for example, networks by country, region, and/or service.

In addition, each file manager node (500-1 to 500-N) is each file producer node (100-1 to 100-N), each file provider node (200-1 to 200-N), and/or each file user Each of the first to fifth smart contract information transmitted from the nodes 400-1 to 400-N is provided and converted into a database (DB) for each file producer node and/or for each content file in a separate storage (not shown). Storage and management functions can be performed.

That is, each file manager node (500-1 to 500-N) is each file producer node (100-1 to 100-N), each file provider node (200-1 to 200-N), and/or each file user First smart contract information including each file producer information data and information related to each content file for each content file transmitted from the nodes 400-1 to 400-N, each file provider node for storing each content file ( 200-1 to 200-N), including second smart contract information including file storage contract information data, and file distribution contract information data with each file distributor node (300-1 to 300-N) for distribution of each content file 3rd smart contract information, 4th smart contract information including file supply contract information data with each file distributor node (300-1 to 300-N) for supply of each content file, and/or purchase and use of each content file For each content file and/or each file producer node in a separate storage by receiving each of the fifth smart contract information including file usage contract information data with each file distributor node (300-1 to 300-N) for Each database (DB) can be stored and managed.

In addition, each file manager node (500-1 to 500-N) receives information on the purchase and use of a specific content file from each file user node (400-1 to 400-N), based on this It is possible to perform a function of providing a service to settle profits according to the first to fifth smart contract information along with the purchase price for the content file.

In addition, each file manager mode (500-1 to 500-N) receives a file discard request message for each content file transmitted from each file producer node (100-1 to 100-N), and based on this, the corresponding content file Change the contents recorded and/or registered in at least one distributed blockchain ledger to prevent use, and change the changed at least one distributed blockchain ledger to the blockchain network (10-1 and/or 10-2), that is, ON )-It is possible to perform a function of providing a service to be shared with a plurality of other file manager nodes 500-1 to 500-N connected to each other in the blockchain network 10-1.

In addition, each file manager mode (500-1 to 500-N) receives a file discard request message for each content file transmitted from each file producer node (100-1 to 100-N), and based on this, the corresponding content file Each file provider node (200-1 to 200-N) and/or each file distributor node (300-1 to 300-N) connected through the blockchain network (10-1 and/or 10-2) so that it can be discarded. ) Can perform a function of transmitting a file discard request message for the corresponding content file.

In addition, each file manager node 500-1 to 500-N receives transmission transaction result information data for a specific content file transmitted from each file user node 400-1 to 400-N, and It can perform the function of providing a service to settle the revenue from transmission.

In addition, each file manager node (500-1 to 500-N) receives transmission transaction result information data for a specific content file transmitted from each file user node (400-1 to 400-N), and It is possible to perform the function of encrypting the information data of the transmission transaction result for the contents file of, and recording and registering it in at least one distributed blockchain ledger.

In addition, each file manager node 500-1 to 500-N stores at least one distributed blockchain ledger recorded and/or registered by encrypting the transmission transaction result information data for a specific content file. 1 and/or 10-2), that is, the function of providing a service to be shared with a plurality of other file manager nodes 500-1 to 500-N connected to each other in the ON-blockchain network 10-1. Can be done.

At this time, the blockchain network 10-1 and/or 10-2, that is, the ON-blockchain network 10-1, encrypts the transmission transaction result information data for a specific content file, records and registers it. It is preferable that at least one distributed blockchain ledger is distributed and stored in a blockchain storage (not shown) of each file manager node (500-1 to 500-N) in the form of a blockchain.

In addition, each file manager node (500-1 to 500-N) is the copyright cost for each file producer node (100-1 to 100-N) based on the first to fifth smart contract information for a specific content file. , A file license fee consisting of a supply cost for each file provider node 200-1 to 200-N, and/or a sale cost for each file distributor node 300-1 to 300-N, and a specific content file It may perform a function of providing a service to calculate the file transmission cost paid to actual file sender nodes (eg, contributing peer nodes CP-1 to CP-N) according to the transmission contribution rate of.

In addition, each file manager node (500-1 to 500-N) receives file playback result information data for a specific content file transmitted from each file user node (400-1 to 400-N), and It is possible to perform a function of recording and/or registering the information data as a result of the file playback on the contents file of at least one distributed blockchain ledger.

In addition, each file manager node 500-1 to 500-N stores at least one distributed blockchain ledger recorded and/or registered by encrypting the file reproduction result information data for a specific content file. 1 and/or 10-2), that is, on-blockchain network 10-1, providing a service to be shared with a number of other file manager nodes 500-1 to 500-N connected to each other, and It is possible to perform a function of providing a service to settle profits according to the first to fifth smart contract information for the contents file of.

At this time, the blockchain network 10-1 and/or 10-2, that is, the ON-blockchain network 10-1, encrypts, records, and registers information data as a result of file playback for a specific content file. It is preferable that at least one distributed blockchain ledger is distributed and stored in a blockchain storage (not shown) of each file manager node (500-1 to 500-N) in the form of a blockchain.

Each of the aforementioned file producer nodes 100-1 to 100-N, each file provider node 200-1 to 200-N, each file distributor node 300-1 to 300-N, each file user node 400 -1 to 400-N), and/or each file manager node 500-1 to 500-N is, for example, a module, a device, a terminal, and/or a server. It is preferable that it consists of at least one.

On the other hand, each file producer node (100-1 to 100-N), each file provider node (200-1 to 200-N), and each file distributor node (300-1 to 300-N) applied in an embodiment of the present invention ), when each file user node (400-1 to 400-N), and/or each file manager node (500-1 to 500-N) is applied as a terminal, communication through wireless Internet or portable Internet It is preferable to be composed of at least one mobile terminal device among a smart phone, a smart pad, or a smart note, and in addition to a personal PC, a notebook PC, a palm PC, a mobile game machine (Mobile play-station), DMB (Digital Multimedia Broadcasting) phone with communication function, tablet PC, iPad (iPad), etc., all wired/wireless home appliances/communication devices that have a user interface to access each node can be comprehensively meant have.

On the other hand, each file producer node (100-1 to 100-N), each file provider node (200-1 to 200-N), and each file distributor node (300-1 to 300-) applied in an embodiment of the present invention N), each file user node (400-1 to 400-N), and/or each file manager node (500-1 to 500-N) is applied as a server, the blockchain network 10-1 and / Or 10-2) can be implemented as a computer that can access a remote server or terminal. Here, the computer may include, for example, a notebook equipped with a web browser, a desktop, and a laptop.

Meanwhile, the blockchain network 10-1 and/or 10-2 may be implemented using a common communication network, and the communication network may be formed of, for example, Ethernet or a mobile communication network. , It may be a communication network that is a high-speed backbone network of a large communication network capable of large-capacity, long-distance voice and data services, and includes Internet or Wi-Fi, Wibro, and Wimax for providing high-speed multimedia services. It may be a next-generation wireless network including.

The Internet is a TCP/IP protocol and various services existing at the upper layer, namely HTTP (Hyper Text Transfer Protocol), Telnet, FTP (File Transfer Protocol), DNS (Domain Name System), SMTP (Simple Mail Transfer Protocol), It refers to a global open computer network structure that provides Simple Network Management Protocol (SNMP), Network File Service (NFS), and Network Information Service (NIS), and each file producer node (100-1 to 100-N), each File provider nodes 200-1 to 200-N, each file distributor node 300-1 to 300-N, and each file user node 400-1 to 400-N are each file manager node 500-1. To 500-N). Meanwhile, the Internet may be a wired or wireless Internet, or may be a core network integrated with a wired public network, a wireless mobile communication network, or a portable Internet.

If the communication network is a mobile communication network, it may be a synchronous mobile communication network or an asynchronous mobile communication network. An example of the asynchronous mobile communication network is a wideband code division multiple access (WCDMA) communication network. In this case, although not shown in the drawings, the mobile communication network may include, for example, a radio network controller (RNC). Meanwhile, although the WCDMA network is taken as an example, it may be a next-generation communication network such as a 3G LTE network, a 4G network, a 5G network, or an IP network based on other IPs. The communication network includes each file producer node (100-1 to 100-N), each file provider node (200-1 to 200-N), each file distributor node (300-1 to 300-N), and each file user The nodes 400-1 to 400-N and each of the file manager nodes 500-1 to 500-N transmit signals and data to each other.

On the other hand, the Block Chain mentioned in an embodiment of the present invention records continuously increasing data in a specific unit of block, and each node constituting a P2P (Peer to Peer) network chains the block. It refers to a data management technology managed by a data structure in the form of a data structure or data itself composed of a data structure in the form of a chain.

At this time, blockchain data composed of a chain-type data structure is operated in the form of a distributed ledger in each node without a central system.

In addition, each blockchain node constituting the blockchain network 10-1 and/or 10-2 manages blocks with a data structure. Here, a hash value for a previous block is recorded in each block, and a previous block may be referenced through the hash value. Accordingly, the more blocks are accumulated, the more difficult it is to forgery or alter the transaction data recorded in the block, and the reliability of the transaction data recorded in each block is improved.

That is, in one embodiment of the present invention, the block chain data is data maintained by each block chain node constituting the block chain network 10-1 and/or 10-2, and at least one block is in the form of a chain. It refers to data that is composed of a data structure.

If the data recorded in each block is transactional data, the blockchain data can be used as a distributed ledger. However, the type of data recorded in each block can vary.

In addition, in one embodiment of the present invention, the block chain network 10-1 and/or 10-2 refers to a network of P2P (Peer to Peer) structure composed of a plurality of block chain nodes operating according to a block chain algorithm. do.

In addition, in an embodiment of the present invention, the block chain node refers to a subject that configures the block chain network 10-1 and/or 10-2 and maintains and manages the block chain data based on the block chain algorithm. . The blockchain node may be implemented as a single computing device, but may also be implemented as a virtual machine. When implemented as a virtual machine, multiple blockchain nodes may exist on a single computing device.

As described above, in an embodiment of the present invention, the block chain is a public transaction ledger and is a technology that prevents hacking that may occur when transacting on a specific content file. At this time, the blockchain is a form of a distributed database (DB), which is a continuously growing data record list, which cannot be arbitrarily manipulated by the operator of the distributed node, and the transaction record of the data record list is mandatory and encrypted It is running on a computer running.

The structure of the blockchain uses a consensus convergence algorithm that ensures that the data of the ledger distributed and stored in each node among large-scale nodes is always kept up to date, and this structure allows nodes to run anonymously or have good connections. It also makes it possible for an untrusted operator to participate.

3 is a diagram for explaining the structure of a block chain applied to an embodiment of the present invention, and a block chain may include a header and a body.

Here, the header may include at least one of a block hash, a version, a hash of a previous block header, and a merkle root, and the body is at least one May contain transactions.

The hash of the previous block header may mean storing a previously generated block hash to connect each block in a linked list method, and the Merkle root verifies the integrity of the transaction. It is intended to mean the value of the transaction stored in the body part, and when there are multiple transactions in the corresponding block, it can mean the value that is finally left in the binary tree form created by summing the hash values of each transaction. have.

Such a block chain can mean a public transaction ledger, and it can mean a technology to prevent hacking that may occur during virtual currency transactions. In the case of existing financial companies, transaction records are kept on a centralized server, but blockchain can record transaction details on multiple computers to all users participating in the transaction. Accordingly, the Bank of Korea defines blockchain as a decentralized open ledger management technology that jointly records and stores information and values produced by network participants.

The distributed technology of the block chain can be used to prevent data forgery by collating the transaction details recorded on multiple computers for each virtual currency transaction. In other words, since all participants share the books, the integrity of the transaction history can be guaranteed.

In addition, the blockchain provides a time stamp record to prevent double spending and modification of previous transaction records, and does not require an authorized third party, thus reducing costs required for maintenance, security and financial transactions. You can save.

Here, the double expenditure can be sent by attaching cryptocurrency to a message, such as attaching a file to an email when writing an email, if Alice sends a cryptocurrency of 100,000 won to Bob, for example, Alice's computer As the file is maintained in the file, it may mean the problem that the virtual currency is maintained on Alice's computer, so that the virtual currency of 100,000 won can be sent back to a friend other than Bob. This problem can be called the double-spending problem in computer science. In order to solve this problem, there must be an institution that manages a third ledger, but blockchain technology can be solved through distribution and disclosure of the ledger.

The block of the blockchain may mean a record that stores and approves a number of pending transactions. On average, a new block containing transactions approximately every 10 minutes can be included in the blockchain through mining.

Here, taking bitcoin as an example, mining may mean a mathematical calculation performed by computer hardware for transaction approval and security enhancement of bitcoin. In addition, bitcoin miners can receive transaction fees and newly created bitcoins for transactions they approve in exchange for the services they provide, and in the bitcoin mining market, compensation can be distributed according to the amount of calculation.

The initial appearance of the blockchain was a technology for safe storage of virtual currency. Unlike existing currencies, virtual currency can be conveniently used because it is easy to deposit and withdraw money using a smartphone, and it has been in the spotlight because of the stability of the blockchain.

This bitcoin is the most representative example of the cryptocurrency of the blockchain, so I will explain it in more detail. Bitcoin is a cryptocurrency developed by an anonymous developer named Satoshi Nakamoto, and can be obtained by mining by users using a computer network without issuing currency from a central institution. The advantage of Bitcoin is that the user has a Bitcoin wallet when sending or receiving money, and if you know the other party's address, you can send it as easily as sending an email through a QR code or address. Here, the bitcoin wallet may refer to a personal wallet used in a network that stores a private key in a blockchain.

However, the blockchain has a disadvantage that once approval is completed and the transaction details are stored in the block, cancellation is not possible, and the transaction details are disclosed to all, so that if you know who the owner of the address is, you can trace it, so you cannot maintain confidentiality.

In addition, if the private key is stolen or lost, it is difficult to return coins, and cryptocurrency is convenient and efficient because it has anonymity, but there are no records of exchanges and exchanges, so it may be abused. It may be necessary to supplement from an institutional aspect. In addition, since the blockchain is used as a currency, it has a disadvantage of high risky price volatility.

Figure 4 is a conceptual diagram for explaining a smart contract using a block chain technology applied to an embodiment of the present invention, a smart contract (Smart Contract) can perform execution and enforcement of a contract or negotiation using a block chain technology Refers to the program code.

Thus, the entire process is automated by the program code to supplement or replace legal contracts. The existing blockchain 1.0's virtual currency storage function can be programmed in various forms. Among the multiple cryptocurrencies, ethereum is a blockchain system that can execute smart contracts, and it can provide a global platform through EVM (Ethereum Virtual Machine). Developers can execute smart contracts through programming and manage digital assets such as virtual currency.

Here, Ethereum was developed to use a platform that records various information such as SNS (Social Network Service), e-mail, and electronic voting to overcome the fact that negotiations are not well conducted due to the vastness of the Bitcoin network. Ethereum can provide account management, currency generation and mining, and can use smart contracts and Distributed Applictaion (Dapp) that can run applications on EVM.

Nick Szabo, the first creator of the smart contract, defined smart contracts as a highly developed automatic contract execution method between machines in an unreliable computer networking environment, and various decentralized applications such as real estate contracts, online voting, and healthcare on the blockchain. The platform has been extended so that it can be developed.

Currently, the technology that focuses most in Blockchain 2.0 is smart contracts. Even in Bitcoin, smart contracts were possible, but only if conditional statements were available, so there were restrictions on creating desired contracts.

On the other hand, Ethereum, well known as a smart contract, can provide turing completeness, so it can support even programming on a computer, so you can program various types of transactions or contracts.

Existing contracts included legal language in documents printed by legal experts and were highly dependent on third parties. In addition, traditional contracts are time-consuming, and when disputes arise, they must rely on the judicial system, which is costly and time consuming. However, the smart contract of the blockchain can be written by a computer programmer through a digital language, and the rules and results can be defined in the same way as specifying the obligations, benefits and penalties of the contracting party in the existing traditional contract, and is developed by programming. It has the advantage that the contract can be enforced by the system.

Hereinafter, a content file distribution method using a blockchain-based smart contract according to an embodiment of the present invention will be described in detail.

5 and 6 are overall flowcharts for explaining a content file distribution method using a blockchain-based smart contract according to an embodiment of the present invention.

1 to 6, a content file distribution method using a blockchain-based smart contract according to an embodiment of the present invention is, first, a content file through each file producer node (100-1 to 100-N). First smart contract information for registration of, second smart contract information for storage of content files, and third smart contract information for distribution of content files to each file manager node 500-1 to 500-N Do (S100).

At this time, in the step S100, the first smart contract information preferably includes, for example, file producer information data for registration of a corresponding content file and information data related to a corresponding content file.

In addition, it is preferable that the second smart contract information includes, for example, file storage contract information data with each file provider node 200-1 to 200-N for storage of a corresponding content file.

In addition, the third smart contract information preferably includes, for example, file distribution contract information data with each of the file distributor nodes 300-1 to 300-N for distribution of the corresponding content file.

Meanwhile, although not shown in the drawing, before step S100, at least one content file is generated through each file producer node 100-1 to 100-N, and each file manager node ( 500-1 to 500-N), watermarking a unique content ID corresponding to each content file, and encrypting using a symmetric key to each file manager node 500-1 to 500- After requesting the verification of the content file to N), a step of requesting registration of the content file to each file manager node 500-1 to 500-N according to the verification result may be further included.

Thereafter, through each file provider node (200-1 to 200-N), the content file in the step S100 is collected and stored, and the fourth smart contract information for supplying the content file is stored in each file manager node 500- 1 to 500-N) is transmitted (S200).

In this case, in the step S200, the fourth smart contract information preferably includes, for example, file supply contract information data with each file distributor node 300-1 to 300-N for supplying the corresponding content file.

In addition, in step S200, each file provider node (200-1 to 200-N) collects content files generated from each file producer node (100-1 to 100-N) in step S100 to separate file storage In (not shown), a database (DB) for each file producer node and/or for each content file can be stored.

Then, a service for distribution or sale of the content file stored in step S200 is provided through each of the file distributor nodes 300-1 to 300-N (S300).

Next, based on the service provided in step S300 through each file user node (400-1 to 400-N), specific content according to the file use contract information with each file distributor node (300-1 to 300-N) In addition to purchasing a file, the fifth smart contract information for purchasing a specific content file is transmitted to each file manager node (500-1 to 500-N), and each file distributor node (300-1 to 300-N) A specific content file is received from the smart contracted file provider nodes 200-1 to 200-N (S400).

At this time, in the step S400, the fifth smart contract information preferably includes, for example, file use contract information data with each file distributor node 300-1 to 300-N for purchase and use of the corresponding content file. Do.

In addition, in the step S400, file provider nodes 200-1 to 200- contracted with each file distributor node 300-1 to 300-N through each file user node 400-1 to 400-N. When receiving specific content files from N), transmission of specific content files is interlocked with each file distributor node (300-1 to 300-N) and/or each file provider node (200-1 to 200-N) One tracker peer node (TP) with information data for and a plurality of contribution peer nodes (CP-1 to CP) distributed and stored in a specific content file as a plurality of content partial files It is preferable to use a specific content file by receiving all of a plurality of content partial files through a peer to peer (P2P) communication method according to a file transfer service option selected by a file user through -N).

Here, the tracker peer node (TP) partially has, for example, hash information data for a specific content file, Seeder address list information data having the entire specific content file, and a specific content file. It is preferable to include information data for transmission of a specific content file consisting of information data on a Leacher address list.

In addition, the file transfer service option is, for example, a network transmission rate option that selects contributing peer nodes (CP-1 to CP-N) in the order of speed according to the network speed, and is subscribed for free regardless of the network speed. At least one of a transmission cost option that first selects contributing peer nodes (CP-1 to CP-N), or a sender reliability option that first selects contributing peer nodes (CP-1 to CP-N) with high reliability of the sender It is desirable to have a service option of.

In addition, when all of the plurality of content partial files are transmitted from a plurality of contributing peer nodes (CP-1 to CP-N) through each file user node (400-1 to 400-N), It is preferable to generate the transmission transaction result information data and transmit it to at least one file manager node 500-1 to 500-N connected to each other through the blockchain network 10-1 and/or 10-2.

And, each file manager node (500-1 to 500-N) is based on the transmission transaction result information data for a specific content file transmitted from each file user node (400-1 to 400-N) to the file transmission contribution rate. It is desirable to provide a service to settle profits accordingly.

In addition, each file manager node (500-1 to 500-N) is a specific content file based on the transmission transaction result information data for the specific content file transmitted from each file user node (400-1 to 400-N). At least one distributed block in which the transmission transaction result information data is encrypted and recorded and/or registered in at least one distributed blockchain ledger, and then the transmission transaction result information data for a specific content file is encrypted and recorded and/or registered. Chain ledger with a number of other file manager nodes 500-1 to 500-N connected to the blockchain network 10-1 and/or 10-2, that is, ON-blockchain network 10-1. It is desirable to provide services to be shared.

Meanwhile, the transmission transaction result information data for a specific content file generated from each file user node 400-1 to 400-N is, for example, a Merkle tree for a specific content file obtained using the Merkle Hash Tree algorithm. Merkle Tree) It is desirable to include the final transmission transaction details information data along with the root hash value.

Thereafter, the first to fifth smart contract information transmitted in the steps S100, S200 and S400 through each file manager node 500-1 to 500-N is recorded in at least one distributed blockchain ledger and/ Or register (S500).

At this time, the step S500 is at least one distributed blockchain ledger by encrypting the information on the corresponding content file transmitted in the steps S100, S200, and S400 through each file manager node (500-1 to 500-N). After recording and/or registration in the blockchain network (10-1 and/or 10-2), that is, ON (ON), at least one distributed blockchain ledger recorded and/or registered by encrypting information on the content file )-It is preferable to provide a service to be shared with a plurality of other file manager nodes 500-1 to 500-N connected to each other in the blockchain network 10-1.

Additionally, after step S500, a file discard request message for discarding a corresponding content file is transmitted to each file manager mode (500-1 to 500-N) through each file producer node (100-1 to 100-N). At least one distribution to prevent the use of the corresponding content file based on the step (S600) and the file discard request message for the corresponding content file transmitted in the step S600 through each file manager mode (500-1 to 500-N) After changing the contents recorded and/or registered in the blockchain ledger, the changed at least one distributed blockchain ledger is transferred to the blockchain network (10-1 and/or 10-2), i.e., the ON-blockchain network ( 10-1) may further include providing a service to be shared with a plurality of other file manager nodes 500-1 to 500-N connected to each other (S700).

Moreover, after the step S700, a block so that the corresponding content file can be discarded based on the file discard request message for the corresponding content file transmitted in the step S600 through each file manager mode (500-1 to 500-N). Each file provider node (200-1 to 200-N) and each file distributor node (300-1 to 300-N) connected to each other through a chain network (10-1 and/or 10-2) It may further include transmitting a file discard request message.

In addition, before or after the step S500, the first to fifth smart contract information transmitted in the steps S100, S200, and S400 through each file manager node (500-1 to 500-N) is per file producer node. And/or storing and managing a database (DB) for each content file.

In addition, after the step S500, information data about the purchase and use of a specific content file from each file user node (400-1 to 400-N) through each file manager node (500-1 to 500-N) If provided, providing a service to process the purchase price for a specific content file based on information data on purchase and use of a specific content file and to settle revenue according to the first to fifth smart contract information It may further include.

In addition, after the step S500, each file producer node 100-1 to 100 based on the first to fifth smart contract information for a specific content file through each file manager node 500-1 to 500-N. The file license cost consisting of the copyright cost for -N), the supply cost for each file provider node 200-1 to 200-N, and the selling cost for each file distributor node 300-1 to 300-N, and The method may further include providing a service to calculate the file transmission cost paid to the actual file sender nodes according to the transmission contribution rate of the specific content file.

In addition, after the step S400 or step S500, each file distributor node (300-1 to 300-N) through each file user node (400-1 to 400-N) and the file provider node (200- 1 to 200-N), when a specific content file is transmitted and used, the first to generate file reproduction result information data for the specific content file and transmit it to each file manager node 500-1 to 500-N. It may further include a step.

In addition, after the first step, based on the file reproduction result information data for the specific content file transmitted in the first step through each file manager node (500-1 to 500-N) The second step of encrypting the file playback result information data and recording and/or registering it in at least one distributed blockchain ledger, and the second step through each file manager node 500-1 to 500-N. Blockchain network (10-1 and/or 10-2), i.e., ON-blockchain network, at least one distributed blockchain ledger recorded and/or registered by encrypting the file playback result information data for the content file The third step of providing a service to be shared with a plurality of other file manager nodes 500-1 to 500-N connected to each other in (10-1), and through each file manager node 500-1 to 500-N It may further include a fourth step of providing a service to settle revenue according to the first to fifth smart contract information for a specific content file.

On the other hand, the content file distribution method using a blockchain-based smart contract according to an embodiment of the present invention may also be implemented as a computer-readable code on a computer-readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data readable by a computer system is stored.

For example, computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, hard disk, floppy disk, removable storage device, and nonvolatile memory. And optical data storage devices.

In addition, the computer-readable recording medium may be distributed in a computer system connected through a computer communication network, and stored and executed as codes that can be read in a distributed manner.

Although a preferred embodiment of the content file distribution system and method using a blockchain-based smart contract according to the present invention has been described, the present invention is not limited thereto, and the claims and detailed description of the invention and the appended It is possible to perform various modifications within the scope of the drawings, and this also belongs to the present invention.

100-1 to 100-N: file producer node,
200-1 to 200-N: file provider node,
300-1 to 300-N: file distributor node,
400-1 to 400-N: file user node,
500-1 to 500-N: file manager node

Claims (39)

A file producer node for transmitting first smart contract information for registering a content file, second smart contract information for storing a content file, and third smart contract information for distributing a content file;
A file provider node collecting and storing content files from the file producer node and transmitting fourth smart contract information for supplying content files;
A file distributor node that provides a service for distribution or sale of content files stored in the file provider node;
Based on the service provided from the file distributor node, a specific content file is purchased according to the file use contract information with the file distributor node and the fifth smart contract information for purchasing a specific content file is transmitted, and the file A file user node that receives a specific content file from a file provider node that has a smart contract with the distributor node; And
The first connected to the file producer node, the file provider node, the file distributor node, and the file user node through a blockchain network, and transmitted from the file producer node, the file provider node, and the file user node. To the fifth smart contract information, including a plurality of file manager nodes for registering at least one distributed blockchain ledger,
When the file user node receives a specific content file from a file provider node that has a file supply contract with the file distributor node, the file user node interlocks with the file distributor node or the file provider node to transmit information data for a specific content file. A file transfer service option selected by the file user through one tracker peer node having a and a plurality of contribution peer nodes that are distributed and stored as a number of content partial files. According to the P2P (Peer to Peer) communication method, when all the plurality of content partial files are transmitted and a specific content file is used, and when all the multiple content partial files are transmitted from a plurality of contributing peer nodes, on-off ( ON-OFF) Based on a hybrid blockchain network, the transmission transaction result information data for a specific content file is processed in the off-blockchain network, and only the final transmission transaction detail information data, which is the sum of the results, is sent to the on-blockchain network once. To be recorded in at least one file manager node connected to each other through the on-blockchain network,
The plurality of file manager nodes encrypt information on the corresponding content file transmitted from the file producer node, the file provider node, and the file user node to register in at least one distributed blockchain ledger, and in the corresponding content file Provides a service to share at least one distributed blockchain ledger in which information is encrypted and registered with a plurality of other file manager nodes connected to each other in the on-blockchain network,
The on-blockchain network is always connected to the network so that transaction information for transactional content files can be generated at any time and recorded in at least one distributed blockchain ledger, and information on the content file is encrypted. At least one registered distributed blockchain ledger is distributed in the form of a blockchain in the blockchain storage of each file manager node.
The blockchain network connected to each other between the file producer node, the file provider node, the file distributor node, and the file user node is connected to the network only when the corresponding content file is transmitted to generate transaction information data for the corresponding content file transaction. Content file distribution system using a blockchain-based smart contract, characterized in that it consists of an off-blockchain network in which it can be recorded in at least one distributed blockchain ledger.
According to claim 1,
The first smart contract information transmitted from the file producer node includes file producer information data for registration of the content file and information data related to the content file,
The second smart contract information transmitted from the file producer node includes file storage contract information data with the file provider node for storage of a corresponding content file,
The third smart contract information transmitted from the file producer node includes file distribution contract information data with the file distributor node for distribution of the corresponding content file,
The fourth smart contract information transmitted from the file provider node includes file supply contract information data with the file distributor node for supplying a corresponding content file,
Content using a blockchain-based smart contract, characterized in that the fifth smart contract information transmitted from the file user node includes file use contract information data with the file distributor node for purchase and use of a corresponding content file. File distribution system.
According to claim 1,
The file provider node collects the content files generated from the file producer node and stores it in a separate file storage as a database (DB) for each file producer node or for each content file. Content file distribution system used.
According to claim 1,
The file manager node receives first to fifth smart contract information transmitted from the file producer node, the file provider node, and the file user node, respectively, and converts the database (DB) for each file producer node or for each content file. Content file distribution system using a blockchain-based smart contract characterized by storing and managing.
According to claim 1,
The file manager node receives information data on the purchase and use of a specific content file from the file user node, and processes the purchase price for a specific content file based on this, and the first to fifth smart contract information. A content file distribution system using a blockchain-based smart contract, characterized in that it provides a service to settle profits according to it.
delete delete According to claim 1,
The file producer node transmits a file discard request message for discarding a corresponding content file to the file manager node,
The file manager node receives a file discard request message for the corresponding content file transmitted from the file producer node, and changes the contents registered in at least one distributed blockchain ledger so that the corresponding content file cannot be used, based on this. A content file distribution system using a blockchain-based smart contract, characterized in that providing a service to share at least one distributed blockchain ledger with a plurality of other file manager nodes connected to each other in the blockchain network.
The method of claim 8,
The file manager node is a file provider node and a file distributor node connected to each other through a blockchain network so that the corresponding content file can be discarded based on receiving a file discard request message for the corresponding content file transmitted from the file producer node. A content file distribution system using a blockchain-based smart contract, characterized in that it transmits a file discard request message for the corresponding content file.
delete According to claim 1,
The file producer node generates at least one content file, receives a unique content ID from the file manager node for each generated content file, and watermarks a unique content ID corresponding to each content file. A blockchain-based smart contract, characterized in that after requesting verification of the content file to the file manager node by encrypting using a symmetric key, and requesting registration of the content file as the file manager node according to the verification result. Content file distribution system used.
delete According to claim 1,
The tracker peer node includes hash information data for a specific content file, a Seeder address list information data having the entire specific content file, and a Leacher partially having a specific content file. A content file distribution system using a blockchain-based smart contract, comprising information data for transmission of a specific content file consisting of address list information data.
According to claim 1,
The file transfer service option is a network transmission rate option that selects contributing peer nodes in the order of speed according to the network speed, a transmission cost option that first selects contributing peer nodes that are subscribed for free regardless of the network speed, or a sender. A content file distribution system using a blockchain-based smart contract, characterized in that it consists of at least one service option among sender reliability options that select contributing peer nodes in the order of high reliability.
delete According to claim 1,
The file manager node includes a copyright cost for the file producer node, a supply cost for the file provider node, and a sales cost for the file distributor node based on the first to fifth smart contract information for a specific content file. Content file distribution system using a blockchain-based smart contract, characterized in that it provides a service to settle the file license cost consisting of and the file transfer cost paid to the actual file sender nodes according to the transmission contribution rate of a specific content file .
According to claim 1,
When the file user node receives a specific content file from a file provider node that has a file supply contract with the file distributor node and uses it, generates file reproduction result information data for a specific content file and transmits it to the file manager node. Content file distribution system using a blockchain-based smart contract, characterized in that.
According to claim 1,
The file producer node, the file provider node, the file distributor node, the file user node, and the file manager node include at least one of a module, a device, a terminal, or a server. Content file distribution system used.
delete As a method for distribution of content files by using a system that is connected to each other with a file producer node, a file provider node, a file distributor node, a file user node, and a file manager node through a blockchain network,
(a) The file manager node provides first smart contract information for registering content files, second smart contract information for storing content files, and third smart contract information for distributing content files through the file producer node. Transferring to;
(b) collecting and storing the content file in step (a) through the file provider node, and transmitting fourth smart contract information for supplying the content file to the file manager node;
(c) providing a service for distribution or sale of the content file stored in the step (b) through the file distributor node;
(d) Based on the service provided in the step (c) through the file user node, a request for purchasing a specific content file as well as purchasing a specific content file according to the file use contract information with the file distributor node 5 transmitting smart contract information to the file manager node, and receiving a specific content file from the file distributor node and the smart contracted file provider node; And
(e) including the step of registering the first to fifth smart contract information transmitted in steps (a), (b), and (d) to at least one distributed blockchain ledger through the file manager node, ,
In the step (d), when a specific content file is received from a file provider node that has a file supply contract with the file distributor node through the file user node, a specific content file is interlocked with the file distributor node or the file provider node. Selected by the file user through one tracker peer node with information data for file transfer and a number of contribution peer nodes that are distributed and stored as a number of content partial files. Depending on the file transfer service option (P2P (Peer to Peer)) communication method, a number of content partial files are received and a specific content file is used, and multiple content partial files are transmitted from multiple contributing peer nodes. When received, the transaction result information data for a specific content file is processed in the off-blockchain network based on the ON-OFF hybrid blockchain network, and only the final transmission transaction detail information data is turned on. -Transfer to at least one file manager node connected to each other through the on-blockchain network to be recorded at a time on the blockchain network,
In the step (e), the information on the content file transmitted in the step (a), step (b) and step (d) is encrypted through the file manager node and registered in at least one distributed blockchain ledger. , Provides a service to share at least one distributed blockchain ledger in which information on the corresponding content file is encrypted and registered with a plurality of other file manager nodes connected to each other in the on-blockchain network,
The on-blockchain network is always connected to the network so that transaction information for transactional content files can be generated at any time and recorded in at least one distributed blockchain ledger, and information on the content file is encrypted. At least one registered distributed blockchain ledger is distributed in the form of a blockchain in the blockchain storage of each file manager node.
The blockchain network connected to each other between the file producer node, the file provider node, the file distributor node, and the file user node is connected to the network only when the corresponding content file is transmitted to generate transaction information data for the corresponding content file transaction. A content file distribution method using a blockchain-based smart contract, characterized in that it consists of an off-blockchain network that can record this on at least one distributed blockchain ledger.
The method of claim 20,
In the step (a), the first smart contract information includes file producer information data for registration of the corresponding content file and information data related to the corresponding content file, and the second smart contract information includes information for storing the corresponding content file. Includes file storage contract information data with the file provider node, and the third smart contract information includes file distribution contract information data with the file distributor node for distribution of a corresponding content file,
In the step (b), the fourth smart contract information includes file supply contract information data with the file distributor node for supplying a corresponding content file,
In the step (d), the fifth smart contract information includes file use contract information data with the file distributor node for purchase and use of a corresponding content file. File distribution method.
The method of claim 20,
In the step (b), the file provider node collects the content files generated from the file producer node in the step (a) and stores it in a separate file storage as a database (DB) for each file producer node or for each content file. Content file distribution method using a blockchain-based smart contract, characterized in that.
The method of claim 20,
Before or after the step (e), the first to fifth smart contract information transmitted in the step (a), step (b) and step (d) through the file manager node is transferred to each file producer node or content file. Content file distribution method using a blockchain-based smart contract, characterized in that it further comprises the step of storing and managing each database (DB).
The method of claim 20,
After the step (e), when information data on purchase and use of a specific content file is received from the file user node through the file manager node, information data on purchase and use of a specific content file is used. As a content file using a blockchain-based smart contract, characterized in that it further comprises the step of providing a service to settle profits according to the first to fifth smart contract information along with processing the purchase price for a specific content file. Distribution method.
delete delete The method of claim 20,
After step (e),
(f) transmitting a file discard request message for discarding a corresponding content file to the file manager node through the file producer node; And
(g) After changing the contents registered in at least one distributed blockchain ledger to prevent use of the corresponding content file based on the file discard request message for the corresponding content file transmitted in step (f) through the file manager node , Content file distribution using a blockchain-based smart contract, further comprising the step of providing a service to share the changed at least one distributed blockchain ledger with a plurality of other file manager nodes connected to each other in the blockchain network. Way.
The method of claim 27,
After step (g), based on the file discard request message for the content file transmitted in step (f) through the file manager node, files connected to each other through a blockchain network so that the content file can be discarded. A method of distributing content files using a blockchain-based smart contract, further comprising transmitting a file discard request message for the corresponding content file to a provider node and a file distributor node.
delete The method of claim 20,
Prior to the step (a), at least one content file is generated through the file producer node, and a unique content ID is issued from the file manager node for each generated content file, and a unique content file corresponding to each content file is obtained. After watermarking the content ID and encrypting it using a symmetric key, requesting verification of the content file to the file manager node, and then requesting registration of the content file to the file manager node according to the verification result. Content file distribution method using a blockchain-based smart contract, characterized in that it includes.
delete The method of claim 20,
The tracker peer node includes hash information data for a specific content file, a Seeder address list information data having the entire specific content file, and a Leacher partially having a specific content file. A content file distribution method using a blockchain-based smart contract, comprising information data for transmission of a specific content file consisting of address list information data.
The method of claim 20,
The file transfer service option is a network transmission rate option that selects contributing peer nodes in the order of speed according to the network speed, a transmission cost option that first selects contributing peer nodes that are subscribed for free regardless of the network speed, or a sender. Content file distribution method using a blockchain-based smart contract, characterized in that it consists of at least one service option among sender reliability options that select contributing peer nodes in the order of high reliability of.
delete The method of claim 20,
After the step (e), based on the first to fifth smart contract information for a specific content file through the file manager node, the copyright cost for the file producer node, the supply cost for the file provider node, and The method further comprising providing a service to account for the file license cost, which is a sales cost for the file distributor node, and the file transfer cost paid to the actual file sender nodes according to a transmission contribution rate of a specific content file. Content file distribution method using a blockchain-based smart contract.
The method of claim 20,
After step (d) or step (e),
When a specific content file is received from a file provider node that has a file supply contract with the file distributor node through the file user node and uses it, file reproduction result information data for a specific content file is generated and transmitted to the file manager node. Content file distribution method using a blockchain-based smart contract, characterized in that it further comprises a first step.
The method of claim 20,
The file producer node, the file provider node, the file distributor node, the file user node, and the file manager node include at least one of a module, a device, a terminal, or a server. Content file distribution method used.
delete A program that can execute the method of any one of items 20 to 24, 27, 28, 30, 32, 33, 35 to 37 by a computer is recorded. A computer-readable recording medium.

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