KR102041720B1 - Implementing system of flexible blockchain framework and p2p network constructing method thereof, recording medium for performing the method - Google Patents

Abstract

The present invention relates to a flexible blockchain framework creation system and a P2P network design method, capable of building an exclusive blockchain network proper for a service to be provided with high efficiency and a low cost, and a recording medium therefor. The present invention includes: a transaction module storing information related with cryptocurrencies; a block module decoding the forgery or falsification of a cryptocurrency, identifying a user who is going to get a reward for mining the cryptocurrency, and storing a transaction ID (TxHash) in a list; a peer-to-peer (P2P) network module changing an address value setting of a seed node; a blockchain network module synchronizing each node with an external node or process, or starting the generation of a block through a consensus algorithm; and a code optimizing module collecting blockchain properties, which are diffuse in the source code, into one single config file.

Description

Flexible blockchain framework implementation system and P2P network design method, recording medium for performing the above method {IMPLEMENTING SYSTEM OF FLEXIBLE BLOCKCHAIN FRAMEWORK AND P2P NETWORK CONSTRUCTING METHOD THEREOF, RECORDING MEDIUM FOR PERFORMING THE METHOD}

The present invention relates to a flexible blockchain framework implementation system, a P2P network design method, and a recording medium for performing the method. More particularly, the present invention provides a high-efficiency low-cost blockchain network suitable for a service to be provided. The present invention relates to a flexible blockchain framework implementation system, a P2P network design method, and a recording medium for performing the method.

A blockchain is a trust-based network in which various nodes decentralize and store all transaction information through a P2P network, and allow each node to proceed with a transaction through a consensus algorithm.

In existing blockchain platforms such as Bitcoin or Litecoin, blockchain property values such as block creation time or block size are distributed throughout the code, and using compilation restriction syntax such as Assert statement without considering modification It is fixed, which can cause problems such as code dependency when modifying, which makes it difficult to develop efficiently, because a large amount of compilation errors are generated even by modifying light property values.

In addition, since the IP address and port of the seed node, which informs the peer of the structure of the P2P network, are also fixed, it is difficult to separate it into its own network even if the property value of the blockchain is changed.

In addition, since the platform such as Bitcoin is not an architecture developed to build its own network, various functions added during the maintenance process are not modularized and mixed, which makes code analysis difficult and deepens the code dependency problem. Have.

Korean Patent Publication No. 10-2018-0075450 Korea Patent Registration No. 10-1673073

One aspect of the present invention is to modularize existing blockchain code into functional units, integrate blockchain attribute values into one configuration file for more efficient modification, and modify the address value of a seednode. The present invention provides a flexible blockchain framework implementation system, a P2P network design method, and a recording medium for performing the method.

The technical problem of the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

A flexible blockchain framework implementation system according to an embodiment of the present invention includes a transaction module which is formed of a transaction structure of a virtual currency and stores information related to the virtual currency; Read forgery or tampering of cryptocurrency, identify users to be compensated for cryptocurrency mining, and list the transaction IDs (TxHash) of the transactions included in the block formed through the transaction structure of the transaction module in the form of a list. A block module for storing; A peer to peer (P2P) network module for changing an address value setting of a seed node participating in the blockchain network so as to separate the blockchain network; A blockchain network module for synchronizing each node constituting the P2P network module with an external node or a process or performing block generation through a consensus algorithm; And a code optimization module for collecting blockchain properties of blockchains scattered in the source code in one configuration file so that the source code of the virtual currency can be modified.

In one embodiment, the P2P network module is a first list of a blockchain network, and a white list is a list of white nodes currently participating in the blockchain network when a new node is first connected to the blockchain network. A seed node unit comprising a seed node connected to all white nodes participating in the blockchain network by receiving information; It is composed of a set of white nodes participating in a peer-to-peer (P2P) connection to the current blockchain network, and when a new node is connected, white is generated to generate white list information consisting of the white nodes and delivers it to the seed node unit. A list unit; And a gray list unit configured as a set of gray nodes that are nodes that have participated in the blockchain network but are currently disconnected.

In one embodiment, the gray node may include white list information of the white nodes participating in the blockchain network at the time of termination.

In one embodiment, the P2P network module, when a new node wants to participate in the blockchain network, is connected to the seed node, and receives a white list information from the white list unit, wherein the new node is the first node. The second operation may be performed as a new white node added to the white list unit, and a third operation may be performed in which all the white nodes including the newly white node are connected to the seed node.

In one embodiment, the code optimization module, so that the source code is composed of only Blockchain Core Source (Blockchain Core Source) to serve as a start kit (Start Kit) for configuring a blockchain network, the user's needs You can add more features.

In one embodiment, the block module is composed of version information, a timestamp, a hash value of the previous block, and a nonce for proof of work to read a counterfeit or a modulation of a cryptocurrency. part; A base transaction unit for storing block generation transaction information which is the first transaction generated in the corresponding block, and identifying a user to be compensated for mining cryptocurrency using the stored block generation transaction information; And a transaction list unit for storing transaction IDs (TxHash) of the transactions included in the block in the form of a list.

In one embodiment, when the blockchain network module communicates with external nodes and processes using a remote procedure call server (RPC server), the blockchain network module is implemented using JSON_API open source of cryptocurrency. When communicating between a node and a process, the request side can transmit a signal and method execution request written in JSON, and return a state value or JSON result according to the transmitted signal and execution request.

In one embodiment, the blockchain network module substitutes a random nonce value into the hash function to determine whether the block hash value is smaller than the number according to the mining difficulty, and generates a block if the nonce satisfying the mining difficulty condition is identified. Proof-Of-Proof is implemented to find a block hash value that meets the mining difficulty condition by receiving another reward for mining and then substituting another random nons value into the hash function if the mining difficulty condition is not satisfied. Work, POW) consensus algorithm can be used.

According to an embodiment of the present invention, a method for designing a P2P network of a flexible blockchain framework implementation system includes: connecting a seed node constituting a seed node unit when a new node wants to participate in a blockchain network; Transferring white list information, which is a list of white nodes currently participating in the blockchain network, from the white list unit consisting of the set of white nodes to the seed node unit; Adding the new node as a new white node to the white list portion; And connecting the white node with all the white nodes including the newly white node.

In a computer-readable recording medium according to another embodiment of the present invention, a computer program for performing a P2P network design method of a flexible blockchain framework implementation system is recorded.

According to one aspect of the present invention, by changing the block chain attribute values, such as block generation speed or block size, scattered around, into a single configuration file, it is possible to change the attribute values more easily, and through the seed node With P2P network access, blockchain network separation can be performed simply by modifying the IP of the seed node.

Accordingly, it is possible to more conveniently configure and implement a blockchain network suitable for its own service, and it is possible to develop a low-cost, high-efficiency blockchain core by performing a kind of start kit.

1 is a diagram illustrating a schematic configuration of a flexible blockchain framework implementation system according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a transaction module of FIG. 1.
FIG. 3 is a diagram illustrating a blockchain network module of FIG. 1.
4 and 5 illustrate the code optimization module of FIG. 1.
6 is a view for explaining the experimental process of the transfer transaction of the blockchain according to the present invention.
7 is a view for explaining the results of the remittance transaction experiment according to the present invention.
FIG. 8 is a diagram illustrating a P2P network module of FIG. 1.
FIG. 9 is a diagram illustrating a block module of FIG. 1.
FIG. 10 is a diagram illustrating a P2P network design method of a flexible blockchain framework implementation system according to an embodiment of the present invention.

DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Crypto currency or virtual currency is a digital asset that is designed to function as an exchange, using cryptographic methods to secure transactions, control the creation of additional units, It is a kind of digital currency that certifies the transfer of assets.

Bitcoin, the first cryptocurrency, appeared in 2009. Since then, numerous cryptocurrencies such as Ethereum, Litecoin, Ripple, Monero, Zcash, Dash and Acoin have been introduced.

First, Bitcoin is the first cryptocurrency developed in 2009 using the blockchain technology first described in Satoshi Nakamoto's article "Bitcoin: A Peer to Peer Electronic Cash System" in 2008, but it is open source. Modification of constants and variables is limited, and as a result, compilation error is caused by Assert.

It also has the disadvantage that it takes a long time to analyze the source code because it is not well modularized, but it has nevertheless been the mother of most blockchains.

Litecoin is a Bitcoin-based cryptocurrency developed by Charlie Lee of MIT that changes the hashing function from SHA-256 to Scrypt and increases the block size and the maximum number of issues.

It is meaningful that the blockchain attribute values such as maximum issue amount, hashing method, block size, and block creation time can be modified relatively flexibly by removing the Assert statement of Bitcoin to modify the blockchain attribute value.

However, the limitations of the Bitcoin-based approach still exist in that the modularization is not sufficiently progressed, so that changes in a large framework such as a consensus approach require renovation of existing source code, dependency checking, and modification.

Peercoin is a project in which Bitcoin is used as a parent and proof of work (POW), a consensus algorithm of Bitcoin, is changed to proof of equity (POS) method.

It has become the parent of numerous POS-type blockchains, and it is the first project that showed the most changes in the Bitcoin-based project.

Although Bitcoin's code has been modified and implemented considering all the dependencies of the consensus algorithm, the modularity has not been progressed and the existing Bitcoin code and Peercoin's new code are clutteredly mixed.

Finally, Bytecoin is the first anonymous coin based on Cryptonote technology, using the Cryptonight algorithm, emphasizing anonymity and information protection using ring signatures, and the first independent blockchain that has nothing to do with Bitcoin based blockchain. It is also.

Created through its own blockchain core technology called Cryptonote, it is relatively easy to modify blockchain property values, but the source code length is much larger than Bitcoin and the modularity is not very complicated, so source analysis is very complicated. Even if the change is simple, it is difficult to separate the P2P network of its own blockchain.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.

1 is a diagram illustrating a schematic configuration of a flexible blockchain framework implementation system according to an embodiment of the present invention.

Referring to FIG. 1, the flexible blockchain framework implementation system 10 according to an embodiment of the present invention may include a transaction module 100, a block module 200, a P2P network module 300, and a blockchain network module ( 400 and code optimization module 500.

The transaction module 100 is formed of a transaction structure of a virtual currency, and stores information related to the virtual currency.

Referring to FIG. 2, the transaction module 100 is designed with a transaction structure of Bitcoin which is most commonly used to increase compatibility. In Unlock Time, Timestamp, which is UNIX time information, is recorded. The key information and the block height are recorded, and the number of coins to be transmitted and the remittance address information can be recorded in the outputs.

The block module 200 reads the counterfeit or modulation of the cryptocurrency, identifies a user to be compensated for the cryptocurrency mining, and checks the transactions included in the block formed through the transaction structure of the transaction module 100. Stores the transaction ID (TxHash, ID of virtual currency and token transfer status record) in list form.

The P2P network module 300 changes the address value setting of the seed node participating in the blockchain network so as to detach the blockchain network by itself.

That is, users can more easily modify the blockchain attribute value using the P2P network module 300, and can easily separate the independent P2P network by changing the address value of the seed node to an IP or domain suitable for its own blockchain. It becomes possible.

The blockchain network module 400 synchronizes each node constituting the P2P network module with an external node or a process, or proceeds with block generation through a consensus algorithm.

Referring to FIG. 3, each node constituting the blockchain network module 400 includes a daemon (a resident program that runs while operating tasks related to the operation of a computer system in a background state) and a wallet. They communicate with external nodes or processes using a remote procedure call server (Remote®Procedure®Call Server, RPC Server) and an HTTP server (HyperText Transfer Protocol Sever, HTTP Sever).

The blockchain network module 400 may proceed with a synchronization process and a block generation through consensus through such a communication method.

In one embodiment, when the blockchain network module 400 communicates with an external node and a process using a remote procedure call server, the blockchain network module 400 is implemented using the JSON_API open source of a virtual currency, and requests for communication between the external node and the process. The side can pass the signal and method execution request written in JSON method and return the state value or JSON result according to the transmitted signal and execution request.

In the present invention, the proof of work (POW) is used as a consensus method, where the proof of work refers to a method of consensus based on computing power of a computer.

In order to add a new block to the blockchain network through proof of work, it is necessary to obtain a nonce value and a hash value satisfying a specific specification (i.e., a mining difficulty condition) according to mining difficulty.

To this end, the blockchain network module 400 of the present invention substitutes an arbitrary nonce value into the hash function to determine whether the block hash value is smaller than the number according to the mining difficulty (that is, whether the mining difficulty condition is satisfied). If a nonce is found that satisfies the mining difficulty condition, the block is generated and rewarded for mining. If the mining difficulty condition is not satisfied, another nonce value is substituted into the hash function to satisfy the mining difficulty condition. Proof-Of-Work (POW) consensus algorithm can be used to find the block hash value.

The code optimization module 500 collects blockchain properties scattered in the existing source code in one configuration file so that the source code of the virtual currency can be modified.

Referring to FIG. 4, the code optimization module 500 improves the source code structure of the existing platform and collects the parameter values of blockchains scattered around the source code into a single file called a config file. And allow for fluid modifications.

In the present invention, since the code dependency problem is solved through the modularization, even if the parameter value in the configuration file is changed by the code optimization module 500, no compilation error occurs.

Referring to FIG. 5, the source code of the existing blockchain platform has a disadvantage in that unnecessary functions such as a multi signature wallet for security, a check point for checking the integrity of the blockchain, or various anonymity protocols are mixed. Have.

However, since the code optimization module 500 of the present invention serves as a start kit for configuring a blockchain network and a user adds functions as needed, the code optimization module 500 removes all unnecessary functions to facilitate source analysis. You can solve the code dependency problem.

In one embodiment, the code optimization module 500, so that the source code to be composed of only the blockchain core source (Blockchain Core Source) to act as a start kit (Start Kit) for configuring the blockchain network, the user You can add features as needed.

Hereinafter, after replacing the address of the seed node of the own blockchain implemented using the present invention with the IP address of Google Cloud Instance, it is decided to check whether the blockchain is normally implemented by experimenting the remittance function, which is the most basic function of the blockchain. do.

FIG. 6 is a diagram illustrating an experimental process of a transfer transaction of a blockchain according to the present invention, and illustrates a process of transferring from a wallet A to a wallet B of an own blockchain implemented using the flexible blockchain framework of the present invention. In this case, each wallet was tested on two different PCs.

After checking the coins existing in the wallet through the "balance command" in the wallet B terminal, 100 coins are sent to the wallet B through the "transfer command" in the wallet A terminal.

After the completion of the 14th block, the block in which the transaction is located, the "balance command" is called again from the terminal of the wallet B. As a result, it can be seen that 100 coins have been successfully transferred from the wallet A to the wallet B.

7 is a view illustrating the results of a remittance transaction experiment according to the present invention, it is possible to check the JSON value resulting from the actual transaction, it can be confirmed that the amount value is 100 that is the number of coins requesting a remittance, the wallet is a transfer destination You can check the address of B in address.

In addition, the results of the remittance test, which is the most basic function of the blockchain of FIG. 7, confirm that the blockchain network was separated independently by changing the blockchain attribute value and the seed node address value in the configuration file without any complicated process. can do.

6 and 7, through the coin transfer experiment, which is the most basic function of the blockchain, it is verified that the independent blockchain network can be easily implemented by the present invention.

Accordingly, by applying the present invention, property value changes can be more easily performed by integrating blockchain property values such as the generation speed or block size of blocks scattered in existing projects into one configuration file.

In addition, through the P2P network access through the seed node, it is easy to develop and implement a flexible blockchain framework that enables the blockchain network separation by simply modifying the IP of the seed node.

Although various companies and foundations are moving into the blockchain market to provide services using blockchain, most of the services are still Ethereum-based blockchain services that are already implemented platforms, or fork bitcoin source code. It is used.

However, by applying the flexible blockchain framework implementation system 10 according to an embodiment of the present invention having the configuration as described above, a framework capable of serving as a kind of start kit for building its own blockchain network You can deliver more efficiently and quickly.

The flexible blockchain framework implementation system 10 having the configuration as described above may execute or manufacture various software based on an operating system (OS), that is, a system. The operating system is a system program for enabling the software to use the hardware of the device, and the mobile computer operating system such as Android OS, iOS, Windows Mobile OS, Sea OS, Symbian OS, Blackberry OS, Windows, Linux, Unix, It can include any computer operating system, such as MAC, AIX, or HP-UX.

FIG. 8 is a diagram illustrating a P2P network module of FIG. 1.

Referring to FIG. 8, the P2P network module 300 includes a seed node unit 310, a white list unit 320, and a gray list unit 330.

The seed node unit 310 is a first node of the blockchain network, and a list of white nodes 321 currently participating in the blockchain network when a new node 340 is first connected to the blockchain network. It is composed of a set of seed nodes 311 connected to all the white nodes 321 participating in the blockchain network by receiving the in-white list information from the white list unit 320.

The white list unit 320 is composed of a set of white nodes 321 currently participating in a peer-to-peer (P2P) connection to the blockchain network, and the white nodes 321 when the new node 340 is connected. It generates white list information consisting of and transmits to the seed node 310.

The gray list unit 330 is composed of a set of gray nodes 331 (gray nodes), which are nodes that have participated in the blockchain network but are currently disconnected.

In one embodiment, the gray node 331 may include white list information of the white nodes 321 participating in the blockchain network at the time of termination.

In the P2P network module 300 having the above-described configuration, when the new node 340 wants to participate in the blockchain network, the new node 340 is first connected to the seed node 311, and the white list unit ( In operation 320, a first operation of receiving white list information is performed.

When the execution of the first operation is completed, the new node 340 performs the second operation of adding the new white node 321 to the white list unit 320.

When the execution of the second operation is completed, the third operation is performed in which all the white nodes 321 and the seed node 311 are connected to each other, including the node (ie, the new node 340) that has become a new white node 321. Done.

The P2P network structure (that is, the P2P network module 300) of the present invention includes a seed node 311, which is a node to which a new node 340 first connects when connecting to P2P, and a seed node unit 310 which is a set thereof. It is formed of a white node 321 which is the currently connected active node, a white list unit 320 which is a set thereof, a gray node 331 which is an inactive node, and a gray list unit 330 which is a set thereof (see FIG. 8). The new node 340 joins the P2P network through the seed node 311.

Through this, when changing the port and IP value of the seed node 311 to be connected for the first time in the configuration file, by configuring a completely separate and independent P2P network, it is possible to configure a blockchain network based on P2P network.

FIG. 9 is a diagram illustrating a block module of FIG. 1.

Referring to FIG. 9, the block module 200 may include a block header unit 210, a base transaction unit 220, and a transaction list unit 230.

The block header unit 210 is composed of version information, a UNIX-based timestamp, a hash value of a previous block, and a nonce for proof of work to read a counterfeit or a modulation of a virtual currency.

The base transaction unit 220 stores block generation transaction information, which is the first transaction generated in the block, and identifies a user to be compensated for mining cryptocurrency using the stored block generation transaction information.

The transaction list unit 230 stores the transaction IDs (TxHash) of the transactions included in the block in the form of a list.

FIG. 10 is a diagram illustrating a P2P network design method of a flexible blockchain framework implementation system according to an embodiment of the present invention.

Referring to FIG. 10, in the P2P network design method of the flexible blockchain framework implementation system according to an embodiment of the present invention, when a new node 340 intends to participate in a blockchain network, the seed node unit 310 may be used. It is connected to the seed node (311) (Seed Node) constituting the (S100).

As described above with reference to FIG. 8, here, the seed node unit 310 is the first node of the blockchain network, and when a new node 340 is first connected to the blockchain network, white currently participates in the blockchain network. Consists of a set of seed nodes 311 connected to all white nodes 321 participating in the blockchain network by receiving white list information, which is a list of nodes 321, from the white list unit 320. do.

In addition, the white list unit 320 is configured as a set of white nodes 321 participating in a peer-to-peer (P2P) connection to the current blockchain network, and the white node 321 when the new node 340 is connected. It generates white list information consisting of the ()) and transmits to the seed node (310).

When the new node 340 is connected to the seed node 311 in step S100 described above, the white list information, which is a list of the white nodes 321 participating in the blockchain network, is displayed. The transfer from the white list unit 320 formed as a set to the seed node unit 310 (S200).

When the white list information is transferred to the seed node unit 310 in step S200, a new node 340 is added to the white list unit 320 as a new white node 321 (S300).

When a new white node 321 is added to the white list unit 320 in step S300 described above, all the white nodes 321 including the node that has become a white node 321 and the seed node 311 are connected ( S400).

The P2P network of the present invention includes a seed node 311, which is a node to which a new node 340 is initially connected when connecting to P2P, a seed node unit 310, which is a set thereof, and a white node 321, which is an active node currently connected. ), The set white list 320 and the inactive node gray node 331 and the set gray list 330 (see FIG. 8), and the new node 340 is the seed node 311. Participate in P2P network through.

Through this, when the port and IP value of the seed node 311 to which the new node 340 is first connected are changed in the configuration file, a P2P network-based blockchain network can be configured by configuring a completely separate and independent P2P network. To be able.

The P2P network design method of the flexible blockchain framework implementation system according to an embodiment of the present invention as described above is implemented in the form of program instructions that can be implemented as an application or executed through various computer components, thereby being computer readable. It can be recorded on the recording medium. The computer-readable recording medium may include program instructions, data files, data structures, etc. alone or in combination.

The program instructions recorded on the computer-readable recording medium are those specially designed and configured for the present invention, and may be known and available to those skilled in the computer software arts.

Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CDROMs and DVDs, and magneto-optical media such as floptical disks. And hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like.

Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform the process according to the invention, and vice versa.

Although described above with reference to the embodiments, those skilled in the art can be variously modified and changed within the scope of the present invention without departing from the spirit and scope of the invention described in the claims below. I can understand.

According to the present invention, companies and foundations that wish to proceed with Reverse ICO (Initial Coin Offering), or companies and foundations who want to form and switch their own blockchains in an Ethereum-based decentralized application are already operating. By implementing the service on its own blockchain, it is expected that the blockchain network can be quickly and easily configured, and a fee may be charged in the process.

10: Flexible Blockchain Framework Implementation System
100: transaction module 200: block module
210: block header portion 220: base transaction portion
230: transaction list unit 300: P2P network module
310: seed node portion 311: seed node
320: white list unit 321: white node
330: gray list unit 331: gray node
340: new node 400: blockchain network module
500: code optimization module

Claims (10)

A transaction module formed of a transaction structure of a virtual currency and storing information related to the virtual currency;
Read forgery or tampering of cryptocurrency, identify users to be compensated for cryptocurrency mining, and list the transaction IDs (TxHash) of the transactions included in the block formed through the transaction structure of the transaction module in the form of a list. A block module for storing;
A peer to peer (P2P) network module for changing an address value setting of a seed node participating in the blockchain network so as to separate the blockchain network;
A blockchain network module for synchronizing each node constituting the P2P network module with an external node or a process or performing block generation through a consensus algorithm; And
Flexible blockchain framework implementation system, including a code optimization module that collects blockchain properties scattered in the source code into a single config file so that the source code of a virtual currency can be modified .
The method of claim 1, wherein the P2P network module,
As the first node of the blockchain network, when a new node is connected to the blockchain network for the first time, it receives white list information, which is a list of white nodes participating in the blockchain network, and participates in the blockchain network. A seed node unit comprising a set of seed nodes connected to all white nodes;
It is composed of a set of white nodes participating in a peer-to-peer (P2P) connection to the current blockchain network. A list unit; And
A flexible blockchain framework implementation system comprising a gray list portion consisting of a set of gray nodes, which are nodes that have participated in the blockchain network but are currently disconnected.
The method of claim 2, wherein the gray node,
A flexible blockchain framework implementation system comprising white list information of white nodes participating in the blockchain network at the time of termination.
The method of claim 2, wherein the P2P network module,
When a new node wants to participate in the blockchain network, the first operation is connected to the seed node and receives white list information from the white list unit, and the new node is added as a new white node to the white list unit. And a second operation of connecting the seed node with all white nodes including the second operation and the newly white node.
The method of claim 1, wherein the code optimization module,
Flexible blockchain frame, which allows the source code to be composed only of Blockchain Core Source, and adds functions according to the user's needs so that it can serve as a start kit for configuring a blockchain network. Work implement system.
The method of claim 1, wherein the block module,
A block header portion configured to read version information, a timestamp, a hash value of a previous block, and a nonce for proof of work to read forgery or modulation of a virtual currency;
A base transaction unit for storing block generation transaction information which is the first transaction generated in the corresponding block, and identifying a user to be compensated for mining cryptocurrency using the stored block generation transaction information; And
Flexible block chain framework implementation system including a transaction list unit for storing the transaction ID (TxHash) of the transactions included in the block in the form of a list.
The method of claim 1, wherein the blockchain network module,
When communicating with external nodes and processes using a remote procedure call server (RPC server), it is implemented using the JSON_API open source of cryptocurrency. A flexible blockchain framework implementation system that delivers a written signal and method execution request, and returns a state value or JSON result according to the signal and the execution request.
The method of claim 1, wherein the blockchain network module,
By assigning a random nonce value to the hash function, it is checked whether the block hash value is smaller than the number according to the difficulty level.If the nonce that satisfies the difficulty level is confirmed, the block is generated and the reward is obtained for the mining difficulty. If it is not satisfied, flexible using consensus algorithm of Proof-Of-Work (POW), which is implemented to find a block hash value that satisfies mining difficulty conditions while assigning another random nons value to the hash function. Blockchain framework implementation system.
Connecting to a seed node constituting the seed node unit when a new node intends to participate in the blockchain network;
Transferring white list information, which is a list of white nodes currently participating in the blockchain network, from the white list unit consisting of the set of white nodes to the seed node unit;
Adding the new node as a new white node to the white list portion; And
A method of designing a peer-to-peer network of a flexible blockchain framework implementation system, comprising: connecting all the white nodes including the newly white node and the seed node.
A computer-readable recording medium having a computer program recorded thereon for performing a P2P network design method of a flexible blockchain framework implementing system according to claim 9.

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