KR20210125164A - The blockchain-based learner competition platform system - Google Patents

Abstract

A blockchain-based learner competition platform system is provided. The blockchain-based learner competition platform system comprises: a first to an n^th node (n is a natural number of 2 or more) corresponding to learner nodes or judge nodes; a management server recording learner content at a blockchain-based distributed ledger by allowing a part or all of the first to the n^th node to participate therein and managing the distributed ledger such that the first to the n^th node share the distributed ledger; a user terminal device capable of retrieving, using and evaluating the content through a request to the management server by using an application; a verification server performing a qualification validation process operation for a usage subject of the user terminal device; and a big data analysis module determining a talent, an aptitude and a level for the usage subject of a corresponding learner node with an artificial intelligence technique by analyzing an evaluation result from evaluation of learner content registered at the learner node through the user terminal device, and outputting a result for a learner's career selection. Each of the user terminal device and the management server registers DID information at a blockchain. The management server receives an electronic qualification statement, which is capable of verifying an identity, a qualification, a history and a career of the usage subject of the user terminal device, from the verification server and transfers the electronic qualification statement to the user terminal device, wherein the electronic qualification statement includes the DID information of the management server and the DID information of the user terminal device. The user terminal device performs an electronic signature process on the electronic qualification statement. The present invention can ensure integrity and reliability through forgery prevention.

Description

The blockchain-based learner competition platform system

The present invention relates to a blockchain-based learner contest platform system. In more detail, not only educational institutions such as schools but also educational institutions such as schools provide learner contest items hosted by various institutions, register content representing learners' talents, and the general public can evaluate them and receive rewards accordingly. It is about a platform system for a blockchain-based learner contest that provides a platform system that has

Blockchain is a data distributed processing technology that distributes and stores all data that is managed by all users participating in the network. It is also called 'Distributed Ledger Technology (DLT)' or 'Public Transaction Ledger' in that the ledger containing transaction information is not held by the transaction subject or a specific institution, but is a technology shared by all network participants. . Blockchain is a name given to the fact that blocks containing transaction contents are linked like a chain. This block chain is a technology to prevent hacking, such as forgery or forgery of transaction contents, and it uses a method to prevent data forgery by sending transaction details to all users participating in the transaction and collating them with each transaction.

The core concept of blockchain is decentralization, which aims for P2P (Peer to Peer) transactions, away from the existing financial system that secures and manages all transactions in financial institutions. P2P refers to a communication network that connects personal computers without a server or client, and each connected computer acts as a server and client and shares information.

In the existing financial system, financial companies have kept transaction records on a central server, whereas in a blockchain based on the P2P method, transaction information is stored in blocks and connected in turn, and it is shared by all participants.

Virtual Currency, also called electronic money or cryptocurrency, refers to money that is traded online without real money such as bills or coins. Unlike regular currencies issued by governments or central banks of each country, virtual currencies are valued according to rules set by the person who first invented them. In addition, due to the decentralization feature, the government or central bank does not manage transaction details and because it is distributed based on blockchain technology, certain institutions such as the government do not guarantee the value or payment.

Korean Patent Laid-Open Patent No. 10-2017-0137388 (Announcement Date December 13, 2017)

The technical problem to be solved by the present invention is to provide various learner contest items based on block chain, induce learners to participate in the content, conduct screening by opening it to the general public, and provide all participants and judges with It is to provide a blockchain-based learner contest platform system that distributes rewards so that learners can perform fair screening while showing their diverse talents.

However, the technical problems to be solved by the present invention are not limited to the above problems, and may be variously expanded without departing from the technical spirit and scope of the present invention.

The blockchain-based learner contest platform system according to an embodiment of the present invention for solving the above problems, the first to nth nodes (n is a natural number greater than or equal to 2) corresponding to the learner node or the examiner node, the first Some or all of the to n-th nodes participate to record learner content in a blockchain-based distributed ledger, and a management server that manages to share the distributed ledger among the first to n-th nodes, the management server using an application A user terminal device that can search for, use, and evaluate the content through a request for a user terminal device, a verification server that performs a qualification verification procedure operation of a user of the user terminal device, and the learner content registered in the learner node to the user terminal device includes a big data analysis module that analyzes the evaluation results evaluated through The user terminal device and the management server each register DID information in the block chain, and the management server receives an electronic verification certificate that can verify the identity, qualification, history and career of the user of the user terminal device from the verification server. It is transmitted to the user terminal device, but the electronic verification document includes DID information of the management server and DID information of the user terminal device, and the user terminal device performs a digital signature procedure on the electronic verification document.

Other specific details of the invention are included in the detailed description and drawings.

According to the present invention, it is possible to evaluate and examine the talents of learners from various viewpoints, and by recording the related activities on the block chain, integrity and reliability can be secured through forgery prevention.

In addition, according to the present invention, since it is possible to verify the identity of the examiners who evaluate the learner, it is possible to derive a reliable examination result.

In addition, according to the present invention, participation can be induced by providing rewards to learners and judges, and various competitions can be hosted using the rewards.

However, the effects of the present invention are not limited to the above effects, and may be variously expanded without departing from the spirit and scope of the present invention.

1 is a diagram illustrating a distributed processing system using a block chain to which the technical idea according to the present invention can be applied.
2 and 3 are block diagrams showing the connection of blocks used in the block chain system.
4 is a block diagram illustrating a blockchain-based learner contest platform system according to an embodiment of the present invention.
5 is a block diagram illustrating a blockchain-based learner contest platform system according to another embodiment of the present invention.
6 is a block diagram of a computing device of a node according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments, and is not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and/or "comprising" refers to the presence of one or more other components, steps, operations and/or elements mentioned. or addition is not excluded.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same components in the drawings, and repeated descriptions of the same components are omitted.

A distributed processing system using a blockchain requires a consensus algorithm to determine the transaction details to be used for block generation after comparing the transaction details (transaction information) generated by each node for each time period. Through this consensus algorithm, nodes participating in the distributed system have the same transaction details that everyone can agree on, and through this, they trust the system.

The consensus algorithm applied to the existing blockchain has several methods, such as a proof-of-work method called PoW, a proof-of-stake method called PoS, and a delegated proof-of-stake method called DPoS. The consensus algorithm applied to the existing blockchain is described below.

(1) PoW (Proof of Work) method

It is a method in which the authority to create blocks is given to the node that solves the computational problem required for block generation first, and the transaction history of the node is trusted. The method adopted by Bitcoin, the first to apply blockchain technology, may be effective in a small system, but as the transaction details and the number of nodes increase, the processing speed for block generation becomes very slow, and all nodes equipped with mining equipment operate together. Because of the work, inefficient energy wastage occurs.

(2) PoS (Proof of Stake) method

It is a method of comparing the transaction details of nodes that want to participate in the consensus process among nodes and trusting the transaction details of many of them. Since it is a method similar to direct election, the reliability of transaction details is very high, but if the number of participating nodes increases, the processing speed becomes slow, and it is not suitable for services that require real-time processing.

(3) DPoS (Delegated Proof of Stake) method

It is a method of trusting the transaction details of many of them by comparing the transaction details of a specified number of nodes that have been delegated authority from the lower nodes. As an indirect election method, the processing speed is fast because only a specified number of nodes participate in the consensus, but there is a problem that the specified node may be hacked and the trust of the system may be broken by unity of more than 51% of the specified nodes.

1 is a diagram illustrating a distributed processing system using a block chain to which the technical idea according to the present invention can be applied.

Referring to FIG. 1 , a distributed processing system 100 using a block chain is a distributed network system composed of a plurality of nodes 110-170. The nodes 110 to 170 constituting the distributed network 100 may be electronic devices having computing power, such as computers, mobile terminals, and dedicated electronic devices.

In general, the distributed network 100 can store and refer to information commonly known to all participating nodes in a connected bundle of blocks called a block chain. The nodes 110-170 can communicate with each other and can be divided into a full node that stores, manages, and propagates the block chain and a light node that can simply participate in transactions. . In this specification, when referring to a node without a separate description, it often refers to a complete node that participates in a distributed network and performs an operation to create, store, or verify a blockchain, but is not limited thereto.

Each block connected to the block chain includes transaction details, that is, transactions within a certain period. The nodes can manage transactions by creating, storing, or verifying the blockchain according to their respective roles.

According to an embodiment, the transaction may represent various types of transactions. In one embodiment, the transaction may correspond to a financial transaction for indicating the ownership status of virtual currency and its change. In another embodiment, the transaction may correspond to a physical transaction for indicating the ownership status of the object and its change. In another embodiment, the transaction may correspond to an information sharing process to represent the recording, storage and transfer of information. Nodes performing a transaction in the distributed network 100 may have a private key and a public key pair each cryptographically related.

2 and 3 are block diagrams showing the connection of blocks used in the block chain system.

Referring to FIG. 2 , the block chain 200 is a kind of distributed database of one or more sequentially connected blocks 210 , 220 , 230 . The block chain 200 is used to store and manage the user's transaction details in the block chain system, and each node participating in the network of the block chain system creates a block and connects to the block chain 200 . Although a limited number of blocks 210 , 220 , and 230 are illustrated in FIG. 2 , the number of blocks that can be included in the block chain is not limited thereto.

Each block included in the block chain 200 may be configured to include a block header 211 and a block body 213 . The block header 211 may include a hash value of the previous block 220 to indicate a connection relationship between blocks. In the process of verifying whether the block chain 200 is valid, the connection relationship in the block header 211 is used. The block body 213 may include data stored and managed in the block 210 , for example, a transaction list or a transaction chain.

Referring to FIG. 3 , the block header 211 may include a hash 2112 of a previous block, a hash 2113 of a current block, and a nonce 2114 . Also, the block header 211 may include a root 2115 indicating a header of a transaction list in a block.

As described above, the blockchain 200 may include one or more connected blocks. The one or more blocks are connected based on a hash value in the block header 211 . The hash value 2112 of the previous block included in the block header 211 is the same as the current hash 2213 included in the previous block 220 as a hash value of the previous block 220 . The one or more blocks are chained by the hash value of the previous block in each block header. Nodes participating in the distributed network verify the validity of a block based on the hash value of the previous block included in the one or more blocks, so it is impossible for a single malicious node to forge or alter the contents of an already created block do.

The block body 213 may include a transaction list 2131 . The transaction list 2131 is a list of blockchain-based transactions. For example, the transaction list 2131 may include a record of financial transactions made in the blockchain-based financial system. The transaction list 2131 may be expressed in the form of a tree, for example, the amount of money transmitted by user A to user B is recorded in the form of a list, and the storage length in the block is the length of the transaction included in the current block. It can be increased or decreased based on the number.

In addition, the block 210 may include other information 2116 other than the information included in the block header 211 and the block body 213 .

Nodes participating in a decentralized network have the same blockchain, and the same transactions are stored in blocks. A block containing a list of transactions is shared on the network, so all participants can verify it.

4 is a block diagram illustrating a blockchain-based learner contest platform system according to an embodiment of the present invention.

Referring to FIG. 4 , the blockchain-based learner contest platform system 10 according to an embodiment of the present invention includes first, second, third, ... n-th nodes (that is, first to second n node) (N1 to Nn), the management server 300 , the verification server 350 , the user terminal device 400 , and the application 450 .

The blockchain-based learner contest platform system 10 of the present invention participates in a plurality of nodes, that is, the first to n-th nodes (N1 to Nn) (here, a node is an electronic device constituting a distributed network). The contents representing the various talents of learners are registered in the management server 300 based on the blockchain, and the contents are recorded in the blockchain-based distributed ledger and then shared by the first to nth nodes (N1 to Nn). In this case, the first to n-th nodes N1 to Nn are configured to include a node (a learner node) that registers the contents and a node (examiner node) that evaluates the registered contents.

That is, when learners register contents at a node in which they participate, they are disclosed to the general public, and judges who have passed an appropriate verification process participate to evaluate the contents and receive a predetermined reward according to the evaluation activity. Similarly, the learner participation node receives a predetermined reward according to content registration and a predetermined reward according to the evaluation results of the reviewers.

The learner node and the reviewer node may register or evaluate the contents through the user terminal device 400 , and they may build a contents sharing network that performs contents registration, evaluation, and management.

The reviewer node may search for information on contents registered through the first to n-th nodes N1 to Nn through the application 450 of the user terminal device 400 , and search for contents registered in each node. can be used and evaluated.

The contents provided by the plurality of nodes (first to nth nodes) may include various contents according to the item of the learner contest, for example, a dance contest, a drone contest, an AI coding contest, a creator contest. , English Ambassador Contest, Mathematical Oral Contest, etc. may include contents corresponding to the relevant item within various contest platforms.

In contrast, the reviewer node performs identification through an appropriate verification process, records the examiner's identity and evaluation results together on the block chain, and through this, prevents forgery of contents and secures the reliability of evaluation results.

In the present invention, compensation for content registration and evaluation using virtual currency can be paid through a smart contract, and royalties for content registration, use, and evaluation can be made transparent. Accordingly, a reasonable and systematic compensation system can be established. In addition, various talents of learners can be discovered through evaluation of the contents registered by the learners, and the contents can be recorded on the block chain and used as materials for customized consulting for learners. Various evaluations of learners can be performed fairly and reliably.

By providing rewards through virtual currency to examiners as well as learners, communication and feedback between the two parties can be sufficiently performed.

Furthermore, the present invention can be developed into a personalized career consulting system, and can help to select an appropriate career path according to the talent, interest, and level of the learner through big data analysis using artificial intelligence technology.

The blockchain-based learner contest platform system 10 according to the present invention may further include a big data analysis module 370 .

The big data analysis module 370 analyzes the evaluation results for the contents registered in the learner node to determine the talent, aptitude, and level of the learner, and outputs the results for the learner's career selection based on the data. can

Content evaluation is performed by a large number of verified reviewers, and it can prevent distorted evaluation results, so it can be used as basic data to understand the talent or level of learners. That is, the big data analysis module 370 may collect content evaluation results, analyze it based on artificial intelligence technology, and output selection items for determining a learner's career path.

In addition, by using the platform system 10 in the present invention, it is possible to manage the learning history and content evaluation results of learners and to provide career consulting, and the subject performing the career consulting can be defined as a 'learning code'. This learning code may correspond to any one of the above-described first to n-th nodes (N1 to Nn). Learning Cody can record and view the learning history and content evaluation results of learners on the blockchain-based distributed ledger, and through this, the learners’ academic performance, extracurricular activities, educational environment, special skills/aptitude, potential/aptitude, and development potential It is possible to consult the correct learning direction and life direction of the learner by analyzing such factors.

In the blockchain-based learner contest platform system 10 according to the present invention, the first to n-th nodes (N1 to Nn) register various contest contents in the management server 300 based on the block chain, and store learner information. It may be configured to register, and the management server 300 manages contents and learner information registered in each node through a blockchain-based distributed ledger.

In addition, the first to nth nodes (N1 to Nn) communicate with the management server 300 and share the distributed ledger while inquiring and viewing contents and learner information recorded in the distributed ledger, and the management server 300 ) manages the distributed ledger, and provides the collected and recorded information to the user terminal device 400 so that a learner registers and searches for contents through the application 450 of the user terminal device 400, and a reviewer selects the contents are designed to be used and evaluated.

According to the present invention, it is possible to manage, supervise and guide by correctly setting the career and learning direction or education direction that the learner should proceed, and to build the learner's portfolio by applying the concept of learning code, and the learner's learning status I can manage my living conditions systematically and rationally.

For the first to nth nodes (N1 to Nn), identity authentication can be performed at the node corresponding to the examiner node through the management server 300 and the verification server 350, and the management server 300 and the verification server ( 350) may perform identity verification using the DID.

DID is a distributed identifier that can prove that you are yourself by CRUD (Create, Read, Update, Delete) of user-centered information that can identify an individual. carry out DID is an identifier generated based on the user's public key.

A DID document refers to a set of data necessary for an individual to authenticate themselves and prove their association with the DID. The DID document is the target of DID's CRUD execution. That is, the DID document means information necessary for verification when using a service, and the included data set includes properties such as public key, authentication method, and digital signature value.

A DID document is created based on the transaction contents by searching in the corresponding blockchain using the DID, and the method of reading the DID document based on the DID may be different for each blockchain.

In relation to the identification verification of the examiner node, in the operation execution procedure of the management server 300 and the verification server 350, first, the examiner node and the management server 300 register their own DIDs in the block chain. And, when a qualification verification request is generated from a third party, for example, a user of the first node N1 to a user of the examiner node, the examiner node transmits the qualification verification request to the management server 300 .

The management server 300 receives an electronic verification certificate that can verify the identity, qualification, history, career, etc. of the user of the examiner node from the verification server 350 and delivers it to the examiner node, and the electronic verification document includes the management server 300 ) and the DID of the reviewer node.

The user of the examiner node performs a digital signature on the received electronic verification certificate, and the examiner node delivers the electronic verification document to the node requesting qualification verification. The node provided with the electronic verification certificate can verify the electronic signature of the electronic verification certificate by searching from the blockchain using the DID registered in the electronic verification certificate. If the digital signature values match, the user's qualification verification of the reviewer node can be trusted.

When a user authenticated by the first to n-th nodes N1 to Nn performs an evaluation on learner content, the identity of the recorder may be recorded together. Therefore, the evaluation information of a specific learner and the identity information of the recorder can be shared by all nodes on the block chain, and it is almost impossible to forge or falsify the information recorded on the block chain. In addition, since the content evaluation information is recorded according to the passage of time in the learner's life cycle, it can be used for consulting such as the learner's future activities or job recommendation based on this.

According to the present invention, blockchain data (eg, content, learner information, various evaluation items, etc.) has a value because of the system operating cost. To this end, cryptocurrency is used for the transaction of blockchain data, and cryptocurrency basically adopts a bandwidth model as a technology. In other words, it allows users to deposit virtual currency and use a portion of the total transaction throughput based on the stakes according to the amount. However, to facilitate transactions, the concept of a usage rental model is introduced. A new field called secondary signature or payer signature is provided so that a subject with a certain amount of permission to use the blockchain can handle other people's transactions on their behalf. A blockchain company that is a service provider deposits a large amount of virtual currency to process the service user's transaction and charges a certain amount.

The virtual currency according to the disclosed embodiment is understood as a concept that collectively refers to all kinds of non-real money whose transaction details are managed through a block chain, such as electronic money and cryptocurrency.

The virtual currency according to the disclosed embodiment may be a coin-type virtual currency in which a separate mainnet is built and managed accordingly, or may be a token-type virtual currency utilizing the infrastructure of other coins such as the Ethereum network, but this The invention is not limited thereto.

The blockchain-based learner contest platform system 10 according to the present invention can be serviced in a form that utilizes the infrastructure of an existing blockchain platform such as Ethereum, and will be serviced using its own infrastructure when the mainnet is developed later. may be

The virtual currency according to an embodiment of the present invention is paid as a reward for using the service of the blockchain-based learner contest platform system 10, can be used for transactions between users, and has a stake through the initial ICO It can also be paid to users.

In an embodiment of the present invention, a transaction between users and a method of paying virtual currency accordingly may be performed by a smart contract. According to the embodiment, a contract for registering content in each node and recording or viewing content evaluation may also be performed by a smart contract, and at least a part or all of the reward for the use of learner content is paid through virtual currency could be

From the learner's point of view, virtual currency may be paid as a reward as a result of registering content in the platform system 10, and virtual currency may be paid in return for using the content.

5 is a block diagram illustrating a blockchain-based learner contest platform system according to another embodiment of the present invention.

Referring to FIG. 5 , the platform system 11 according to another embodiment of the present invention includes a management server 311 , a verification server 351 , block chain holding servers 500 , and user terminal devices 600 . consists of including

In the platform system 11 according to another embodiment of the present invention, each of the user terminal devices 600 is connected to the terminal device used by the learner node or the examiner node of the first to nth nodes N1 to Nn described above. respond It is assumed that the user terminal device of the learner node is the first terminal device 610 and the user terminal device of the examiner node is the second terminal device 620 .

The learner node or reviewer node of the first to nth nodes (N1 to Nn) described above records contents or content evaluation results on the block chain, and is managed using the application 450 of the first terminal device 610 . The contents are transmitted to at least one of the server 311 or the block chain holding servers 500 , and the transmitted contents are propagated to the block chain holding servers 500 , and stored and managed in each server.

The examiner can search for, use, and evaluate the contents registered from the management server 311 using the application 450 of the second terminal device 620, and record the evaluation items on the block chain. The evaluation information on the contents is propagated to the blockchain holding servers 500 through the management server 311, and they share the evaluation information through the distributed ledger and prevent forgery.

Each of the user terminal devices 600 transmits and receives information necessary to use the service of the platform system 11 according to the disclosed embodiment to and from the management server 311 . The management server 311 may acquire, store, and verify information necessary for platform operation by using the information stored in the blockchain holding servers 500 .

The platform system 11 according to another embodiment of the present invention processes a transaction between the user terminal devices 600 using virtual currency as described above. The virtual currency according to the disclosed embodiment may be a coin-type virtual currency in which a separate mainnet is built and managed accordingly, or may be a token-type virtual currency utilizing the infrastructure of other coins such as the Ethereum network, but this The invention is not limited thereto.

The platform system 11 according to another embodiment of the present invention may also be serviced in a form that utilizes the infrastructure of an existing block chain platform such as Ethereum, and may be serviced using its own infrastructure when the mainnet is developed later. have.

The virtual currency according to the disclosed embodiment is paid as a reward for using the service of the platform system 11, can be used for transactions between users, and can also be paid to users who hold shares through an initial ICO.

In another embodiment according to the present invention, the virtual currency paid to each of the user terminal devices 600 is managed by the management server 311 as an already created or issued state, and the activity of each of the user terminal devices 600 . may be paid according to

For example, the management server 311 manages the already issued virtual currency, and may additionally issue virtual currency in some cases. The management server 311 verifies the information stored in the block chain holding servers 500 to determine its integrity, and based on this, the user terminal devices 600 may be paid virtual currency according to the activity.

In one embodiment, the management server 311 may verify the identity information of the examiner together with the verification server 351 . The verification server 351 performs qualification verification of individual nodes corresponding to the user terminal devices 600 according to the request of the management server 311 using the DID as described above.

The management server 311 receives an electronic verification certificate capable of verifying the identity, qualification, history, career, etc. of the node user to the second terminal device 620 from the verification server 351 , and the second terminal device 620 . and the electronic verification certificate includes the DID of the management server 311 and the DID of the second terminal device 620 .

The user of the second terminal device 620 performs an electronic signature on the received electronic verification certificate, and the second terminal device 620 transmits the electronic verification certificate to the node requesting the qualification verification. The node provided with the electronic verification certificate can verify the electronic signature of the electronic verification certificate by searching from the blockchain using the DID registered in the electronic verification certificate.

In general, cryptocurrency mining is performed by one of Proof Of Work (POW), Proof Of Stake (POS), and Delegated Proof of Stake (DPoS). The above methods are one of the distributed consensus algorithms used to guarantee the reliability of the distributed system.

In the disclosed embodiment, the transaction between the user terminal devices 600 and the method of payment of virtual currency accordingly are performed by a smart contract. According to an embodiment, a contract for recording or viewing content and evaluation items may also be performed by a smart contract, and at least some or all of the compensation according to the use of the content may be paid through virtual currency.

In the embodiment shown in FIG. 5 , the first terminal device 610 and the second terminal device 620 communicate with the management server 311 providing services in the platform system 11 according to the disclosed embodiment and necessary information. can transmit and receive.

6 is a block diagram of a computing device of a node according to an embodiment of the present invention.

Referring to FIG. 6 , the computing device 1000 of a node according to an embodiment of the present invention includes a processor 1100 and a memory 1200 , and the processor 1100 includes one or more cores and a graphic processing unit and/or Alternatively, it may include a connection path (eg, a bus, etc.) for transmitting and receiving signals with other components.

The processor 1100 according to an embodiment executes the operation of the platform system described with reference to FIGS. 4 and 5 by executing one or more instructions stored in the memory 1200 .

For example, the processor 1100 collects information on content registered by one or more users by executing one or more instructions stored in the memory, collects one or more learner information, collects evaluation information for each content, The collected information is recorded in a block chain, and related information is provided to at least one user based on the information recorded in the block chain.

Meanwhile, the processor 1100 may further include a random access memory (RAM) and a read-only memory (ROM) for temporarily and/or permanently storing a signal (or data) processed therein. . In addition, the processor 1100 may be implemented in the form of a system on chip (SoC) including at least one of a graphic processing unit, a RAM, and a ROM.

The memory 1200 may store programs (one or more instructions) for processing and controlling the processor 1100 . Programs stored in the memory 1200 may be divided into a plurality of modules according to functions.

The operations of the system described in relation to the embodiment of the present invention may be implemented directly in hardware, as a software module executed by hardware, or by a combination thereof. A software module may contain random access memory (RAM), read only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, hard disk, removable disk, CD-ROM, or It may reside in any type of computer-readable recording medium well known in the art to which the present invention pertains.

The components of the present invention may be implemented as a program (or application) to be executed in combination with a computer, which is hardware, and stored in a medium. The components of the present invention may be implemented as software programming or software components, and similarly, embodiments may include various algorithms implemented as data structures, processes, routines, or combinations of other programming constructs, including C, C++ , Java, assembler, etc. may be implemented in a programming or scripting language. Functional aspects may be implemented in an algorithm running on one or more processors.

It is to be understood that the above-described embodiments are illustrative in all respects and not restrictive, and the scope of the present invention will be indicated by the following claims rather than the foregoing detailed description. And it should be construed that all changes and modifications derived from the meaning and scope of the claims as well as equivalent concepts are included in the scope of the present invention.

100: decentralized network
110-170: nodes
200: Blockchain
210, 220, 230: block
N1 to N4: first to fourth nodes
300, 311: management server
350, 351: verification server
370: big data analysis module
400: user terminal device
450: application
500: Blockchain holding servers
600: user terminal devices

Claims (1)

first to n-th nodes corresponding to the learner node or the examiner node (n is a natural number greater than or equal to 2);
a management server in which some or all of the first to n-th nodes participate to record learner contents in a blockchain-based distributed ledger, and manage the distributed ledger to be shared among the first to n-th nodes;
a user terminal device capable of searching for, using, and evaluating the content through a request to the management server using an application;
a verification server for performing a procedure for verifying a user's qualification of the user terminal device; and
By analyzing the evaluation result of evaluating the learner content registered in the learner node through the user terminal device, the talent, aptitude and level of the user of the learner node are determined using artificial intelligence technology, and A big data analysis module for outputting results; includes;
The user terminal device and the management server each register DID information in the block chain, and the management server receives an electronic verification certificate that can verify the identity, qualification, history and career of the user of the user terminal device from the verification server. A block chain-based learner that transmits to the user terminal device, but the electronic verification document includes DID information of the management server and DID information of the user terminal device, and the user terminal device performs a digital signature procedure on the electronic verification document Competition platform system.

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