KR20210125215A - Blockchain Nodes and Blockchain System Having the Same - Google Patents

Abstract

A blockchain node and blockchain system including the same may provide an interface for a user-centered business model to create a customized smart contract object that combines smart contracts and human computer Interaction (HCI) when creating a smart contract using the blockchain and improve the productivity by applying a rule of a user-centered model when creating a smart contract. The blockchain system of the present invention comprises: a blockchain network; and one or more clients connected to the blockchain network.

Description

Blockchain Nodes and Blockchain System Having the Same}

The present invention relates to a blockchain system, and more particularly, a user-customized smart contract object that combines a smart contract and HCI (Human Computer Interaction) by providing an interface for a user-centered business model when creating a smart contract using a blockchain It relates to a blockchain node that creates a blockchain and a blockchain system including the same.

Blockchain is primarily known for financial transactions, limiting its use to financial institutions. However, blockchain has come a long way and can provide a secure platform for decartelized applications.

These advances have made blockchains capable of hosting applications such as cryptocurrencies, decentralized applications, smart contracts, and other underlying technologies.

Blockchain eliminates issues such as trust, transparency, autonomy, and immutability in peer-to-peer networks. These attributes make blockchains more secure and are the main reason businesses are moving to blockchain-based technologies.

As blockchains share information or ledgers across peer nodes, it is almost impossible to change data stored in a blockchain database. Technically, as mentioned, changing certain information would require attacking at least 51% of the nodes in the blockchain.

Popularity and security may be one of the main factors businesses adopt blockchain, but businesses have their own models and frameworks.

These models and frameworks may differ from business to business or organization to organization. Therefore, in order to better transform the technology, it is necessary to understand the business model along with computer technology. There are many models of running a business, but models such as customer-to-business and customer-to-customer are emerging.

In general, these models can be classified into a value-based business model, a demand-based business model, a resource-based business model, a network-based business model, and a customer-centric business model.

These models are at the heart of how businesses make decisions.

These models consist of business rules set by the business. This is a factor that makes it difficult for Human Computer Interaction (HCI) to create a generalized framework for blockchain, and while efforts are being made to find a point where HCI can be introduced, it is still in its infancy.

Korean Patent No. 10-2025837

In order to solve this problem, the present invention provides an interface for a user-centered business model when creating a smart contract using a block chain to create a user-customized smart contract object that combines a smart contract and HCI (Human Computer Interaction). The purpose is to provide a blockchain node and a blockchain system including the same.

A block chain system according to the features of the present invention for achieving the above object,

a blockchain network comprising one or more blockchain nodes; and

one or more clients connected to the blockchain network;

Each of the blockchain nodes receives a source code for contract information, converts the received source code into EVM (Ethereum Virtual Machine) byte code, and creates a smart contract object from the EVM byte code, It is characterized in that the graphical user interface is exposed to the client in a specific area when the contract object is created.

In one or more blockchain nodes belonging to the blockchain network according to the features of the present invention,

Receives the source code for contract information, converts the received source code into EVM (Ethereum Virtual Machine) byte code, creates a smart contract object from the EVM byte code, and creates the smart contract object in a specific area characterized in that it is formed as a graphical user interface.

The smart contract object includes a user module (User Module) for exposing a specific area to the client as a graphical user interface; And it is characterized in that it includes an organization module (Organization Module) containing important information to maintain security.

According to the above-described configuration, the present invention has the effect of improving productivity by easily applying the rules of the user-centered model when creating a smart contract.

The present invention has the effect of creating a user-customized smart contract that combines a smart contract and HCI (Human Computer Interaction) in a block chain.

1 is a diagram showing the configuration of a system for generating a smart contract using a block chain according to an embodiment of the present invention.
2 is a diagram showing an example of a block chain node according to a conventional embodiment.
3 is a diagram schematically illustrating the internal configuration of a block chain node according to an embodiment of the present invention.
4 is a diagram illustrating a smart contract creation process according to an embodiment of the present invention.
5 is a diagram illustrating the concept of an interface for a user-centered business model in a smart contract according to an embodiment of the present invention.
6 is a diagram illustrating an example of a graphical user interface of a user module provided to a client according to an embodiment of the present invention.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

Blockchain is a technology that records and manages the ledger that records data information jointly by computing devices participating in the network by distributing it to a P2P network rather than a central server of a specific institution. In the existing system, there was an arbitrary central administrator, and the role of confirming and clearing data between both parties and keeping transaction records, but the blockchain ultimately makes the role of such central administrator unnecessary, resulting in low system infrastructure costs and There is also the advantage of increasing data integrity as the number of participating computing devices increases.

In addition, the smart contract described in the present invention uses a block chain technology base to automate the mutual agreement implementation and verification process with a network. All computing devices participating in the network jointly verify, record, and store transaction information in the form of automated contract processing on the basis of building trust in the contract and contract results through a shared network between stakeholders. More specifically, it refers to program code that can perform the execution and execution of contracts or negotiations using blockchain technology.

The present invention provides an interface for a user-centered business model when creating a smart contract using a block chain. In other words, it is a combination of smart contract and HCI (Human Computer Interaction).

1 is a diagram showing the configuration of a block chain system for generating a smart contract using a block chain according to an embodiment of the present invention.

The system 100 according to an embodiment of the present invention may include a blockchain network 110 including a plurality of blockchain nodes 111 , 112 , 113 and one or more clients 120 . Here, the client 120 means a terminal used by a user or an expert, and may provide a path for the user to access the block chain nodes 111 , 112 , 113 included in the block chain network 110 .

Blockchain technology is used for most cryptocurrency transactions, including Bitcoin. Since the transaction process of cryptocurrency is used in a decentralized electronic ledger, a server is operated on each computer of many users running blockchain software, enabling free transactions between individuals without a central bank.

Here, the transaction can include all kinds of contracts beyond the act of transferring ownership of goods. For example, cryptocurrencies may include cryptocurrencies with smart contract functions, such as Ethereum.

Cryptocurrency is a block chain technology composition and monetary system that guarantees the record keeping and security of the network, and applies the rules (blockchain protocol) designed for the entire network as a transaction authentication token so that it can have intrinsic value essential for digital transactions. Allows authentication and authorization to be granted to a space that can be stored inside a transaction.

The block chain system 100 may create a contract using a language used for coding of the block chain. The block chain system 100 can prove the authenticity of the contract by using the block chain. The blockchain system 100 can provide a complete digital contract model by performing a contract through cross-signature authentication.

The blockchain system 100 may create a contract in a smart contract manner and authenticate the created contract. The block chain system 100 may provide a tool that enables the contract to be renewed or canceled by consensus by recording the generated contract in the block chain.

A non-face-to-face contract may be performed by the blockchain system 100 . The blockchain system 100 can be applied to the field of e-commerce. The blockchain system 100 may perform non-face-to-face transactions such as contracts, fulfillment, cancellation, and refund necessary for e-commerce. Transactions performed can be verified by multiple blockchain nodes. Accordingly, fraud or unilateral breach of contract between the parties can be prevented.

Each client 120 may mean a terminal used by a user. The blockchain network 110 may include a first blockchain node 111 , a second blockchain node 112 , and a third blockchain node 113 . The client 120 may be connected to the blockchain network 110 .

For example, the client 120 can access the blockchain network 110 by being connected to the first blockchain node 111 , the second blockchain node 112 , and the third blockchain node 113 . The blockchain nodes 111 , 112 , and 113 may serve as a server connecting the user's client 120 to the blockchain network 110 .

The blockchain nodes 111, 112, and 113 may receive source codes for contract information. The blockchain nodes 111, 112, and 113 may receive information and convert the received information into source codes. The blockchain nodes 111, 112, and 113 may serve to allow general users to access the blockchain and to distribute information to the blockchain.

The blockchain nodes 111, 112, and 113 can convert the source code into EVM byte code. Here, the EVM (Ethereum Virtual Machine) serves to generate the state and logic of the program. Each smart contract contains different states and logic, and the smart contract exists in the form of byte code. Bytecode can be executed by the EVM. The EVM byte code converted from the source code can be executed by the EVM included in the blockchain nodes 111, 112, and 113.

Blockchain nodes 111, 112, 113 can create smart contract objects from EVM bytecodes. A smart contract is also referred to as a smart contract, and it refers to a function that concludes and executes various types of contracts such as financial transactions, real estate contracts, and notarizations based on blockchain. For example, Ethereum is a blockchain-based cryptocurrency in which smart contracts can be implemented. A smart contract is a function that enables transactions between people who have smart contract accounts. Through smart contracts, transactions can be performed without the intervention of a third party.

Not only can an individual make a transaction to an individual, but an individual can make a transaction to many or an individual to another smart contract.

The blockchain nodes 111, 112, and 113 can create blocks. A third party can mine blocks by using the blockchain nodes 111, 112, and 113.

The mining method may include Proof of Work (POW), Proof of Stake (POS), or Delegated Proof of Stake (DPOS).

2 is a diagram showing an example of a blockchain node according to a conventional embodiment, FIG. 3 is a diagram schematically showing the internal configuration of a blockchain node according to an embodiment of the present invention, and FIG. 4 is an embodiment of the present invention It is a view showing the creation process of a smart contract according to , and FIG. 5 is a view showing the concept of an interface for a user-centered business model in a smart contract according to an embodiment of the present invention, and FIG. 6 is a client according to an embodiment of the present invention It is a diagram showing an example of a graphical user interface of the user module provided in the .

The block chain nodes 111 , 112 , and 113 according to an embodiment of the present invention include a memory unit 114 , a control unit 115 , a communication unit 116 , and a block chain process 130 .

The block chain process 130 includes a block generation unit 131 , a block chain control unit 132 , a block propagation unit 133 , and a block verification unit 134 .

The block generating unit 131 may generate a new block including the user's personal information-related transaction details (transactions) corresponding to a predefined time. In addition, the block generating unit 131 may generate a new block to include basic information related to the transaction.

The block chain control unit 132 may control a new block to be connected to its own block chain (Blockchain). That is, the block chain control unit 312 may control a new block to be additionally connected to a block chain in which each block including the transaction details related to personal information is connected in the form of a chain.

The block propagation unit 133 may broadcast a new block to the network to verify the validity of the new block connected to its own block chain.

For example, the block propagation unit 133 may transmit the new block to at least one node (eg, a server of a service provider or a server of a data broker) included in the network. Then, the new block propagated to the network verifies the validity of the block in the block chain node that received the new block, and when the verification is successfully completed, it can be further connected to the block chain of the node.

The block verification unit 134 may receive blocks generated by other blockchain nodes that have formed a network.

The block verifying unit 134 may verify the validity of the received block. For example, the validity of the block can be verified based on the public key and hash value for the block digitally signed by the block chain node.

The conventional blockchain node shown in FIG. 2 shows that the interaction with the client 120 through the cryptocurrency and the Decartelized application is limited to the interface of the application.

Users cannot create their own custom smart contracts, and all users are provided with the same service.

The present invention introduces HCI (Human Computer Interaction) into the block chain through smart contracts, considering a user-centered approach to block chain business.

Blockchain is based on cryptography, peer-to-peer networks, and consensus.

The control unit 115 receives the source code for the information of the contract, converts the received source code into EVM (Ethereum Virtual Machine) byte code, creates a smart contract object 140 from the EVM byte code, and the smart contract object When the 140 is generated, a specific area is controlled to expose the graphical user interface to the client 120 .

When configuring the smart contract 140 using a specific program language, the control unit 115 divides a specific area of the smart contract into specific modules to expose to the client 120 .

In other words, the smart contract 140 is a computer protocol for establishing, verifying, and executing a specific contract by itself. In Ethereum, the smart contract 140 is a program code that can change the state of Ethereum, is included in the block 101, is propagated to each node, and operates in an EVM (Ethereum Virtual Machine) to generate a state transition. That is, the smart contract 140 is a program code capable of changing the state of Ethereum and storing data, such as manipulating not only block header data, but also data of specific values, senders, and received messages.

As shown in Fig. 4, the smart contract 140 in Ethereum is programmed in the Solidity language.

The smart contract 140 programmed in the Solidity language is compiled into byte code by a compiler (solc).

The compiled byte code is included in block 101 and executed by the EVM.

As shown in FIG. 5 , the control unit 115 provides a user module 141 that exposes a specific area to the client 120 in the form of a graphic user interface when the smart contract 140 is created, and security such as contacts. An Organization Module 142 containing important information to be maintained is formed. A specific area of the user module 141 is coupled to cryptocurrency and decartellized applications.

The control unit 115 may temporarily store cryptocurrency, an application program, the generation of the smart contract 140 , the generation of the block 101 , and the like in the memory unit 114 .

The control unit 115 may receive a new block from another block chain node through the communication unit 116 or generate and transmit a new block or smart contract 140 .

This smart contract 140 is to introduce HCI (Human Computer Interaction) to the block chain.

The user module 141 may configure a graphic user interface in a specific area.

The graphical user interface of the user module 141 provides selection information for creating a smart contract based on a menu.

The control unit 115 receives input information necessary for creating a smart contract through the graphical user interface of the user module 141, compiles it, and creates a customized smart contract object to be executed.

The client 120 may receive the graphical user interface of the user module 141 and input information necessary for creating a smart contract.

As shown in FIG. 6 , the graphical user interface of the user module 141 provides information based on a menu, and the level 1, level 2, and level 3 options are provided by the organization for user selection and smart contract creation. It changes dynamically depending on the level.

Users can intuitively understand the various combinations that can be used to create smart contracts.

A graphical user interface can achieve the purpose of introducing HCI (Human Computer Interaction) to the blockchain through a menu and a method of selecting it.

In the above, the embodiment of the present invention is not implemented only through an apparatus and/or method, and may be implemented through a program for realizing a function corresponding to the configuration of the embodiment of the present invention, a recording medium in which the program is recorded, etc. And, such an implementation can be easily implemented by an expert in the technical field to which the present invention belongs from the description of the above-described embodiment.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improved forms of the present invention are also provided by those skilled in the art using the basic concept of the present invention as defined in the following claims. is within the scope of the right.

100: block chain system 101: block
110: blockchain network 111: first blockchain node
112: second blockchain node 113: third blockchain node
120: client 130: blockchain process
140: smart contract 141: user module
142: organization module

Claims (8)

a blockchain network comprising one or more blockchain nodes; and
one or more clients connected to the blockchain network;
Each of the blockchain nodes receives the source code for contract information, converts the received source code into EVM (Ethereum Virtual Machine) byte code, and creates a smart contract object from the EVM byte code, A block chain system, characterized in that when a contract object is created, a graphical user interface is exposed to the client in a specific area. According to claim 1,
The smart contract object includes a user module (User Module) for exposing a specific area to the client as a graphical user interface; and
A blockchain system, characterized in that it includes an Organization Module containing important information that must be secured. 3. The method of claim 2,
The graphical user interface of the user module is a block chain system, characterized in that it provides selection information for creating a smart contract based on a menu. 3. The method of claim 2,
Each of the blockchain nodes receives input information necessary for smart contract creation through the graphical user interface of the user module, compiles it, and creates a customized smart contract object to be executed. 3. The method of claim 2,
A block chain system, characterized in that the specific area of the user module is coupled to cryptocurrency and decartellized applications. In one or more blockchain nodes belonging to a blockchain network,
Receives the source code for contract information, converts the received source code into EVM (Ethereum Virtual Machine) byte code, creates a smart contract object from the EVM byte code, and a specific area when the smart contract object is created A blockchain node characterized in that it forms a graphical user interface. 7. The method of claim 6,
The smart contract object includes a user module (User Module) for exposing a specific area to the client as a graphical user interface; and
A blockchain node comprising an Organization Module containing important information that must be secured. 7. The method of claim 6,
The graphical user interface of the user module provides selection information for creating a smart contract based on a menu to the client,
A block chain node, characterized in that it receives input information necessary for creating a smart contract through the graphical user interface of the user module, compiles it, and creates a customized smart contract object to be executed.

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