KR102153673B1 - Method, system and recordable medium for storing and transmission processing of intelligent CCTV video data using the edge blockchain - Google Patents

Abstract

The purpose of the present invention is to provide a method and system for processing storage and transmission of CCTV video data, capable of efficiently storing intelligent CCTV video data in each divided edge area by introducing the concept of an edge blockchain, and preventing forgery of video data by applying a method of a blockchain. To this end, the system for processing storage and transmission of CCTV video data comprises: a plurality of CCTV nodes for photographing CCTV video data; and a cloud server including a data storage for storing the photographed CCTV video data. The system divides a plurality of edge areas including the predetermined number of nodes based on a geographic location of the CCTV nodes, and includes an edge blockchain as one ledger for each edge area. The CCTV nodes included in the edge areas further include an edge storage for storing an edge blockchain related to the photographed surveillance video data. In addition, the edge blockchain is a closed type blockchain in which each CCTV node within the same edge area shares the same edge blockchain. Through the method, video data can be processed safely and efficiently by dividing a management area into edge areas based on an edge blockchain in an intelligent CCTV video surveillance environment, and specifically, a lightweight blockchain can be formed according to characteristics of an edge storage on CCTV.

Description

Method, system and recordable medium for storing and transmission processing of intelligent CCTV video data using the edge blockchain}

The present invention relates to a method and system for safe storage and transmission of intelligent CCTV image data, and more particularly, by introducing the concept of an edge block chain, efficiently storing intelligent CCTV image data in each divided edge area It relates to a new processing method and system capable of storing and transmitting CCTV video data that can prevent forgery and alteration of video data by applying the chain method.

Intelligent CCTV video information needs to be processed by storing video information on a cloud server to provide meaningful intelligent video surveillance services such as big data, video analysis, artificial intelligence analysis, behavior and pattern prediction, and risk prediction.

In particular, as shown in FIG. 1, the cloud server has a great advantage in that it can flexibly store a large amount of image data, but there may be various risks such as manipulation and alteration of image information in the cloud server when storing image information.

If specific video information is changed, problems may arise in various video surveillance and security fields, such as invasion of privacy of individuals appearing in the video and loss of tracking information of the suspect.

Accordingly, the present invention proposes a safe and efficient processing method that guarantees the integrity of CCTV video information using a block chain.

Prior Art 1 (KR 2019-0083295 A) is a method and system for certifying and authenticity of digital evidence of cctv video using blockchain, and is included in the blockchain network. In the control of one node, when a predetermined event occurs, the first node generating block data including confirmation data of a first control image corresponding to the event; And storing the block data generated by the first node in a first block chain, and sharing the block data with a central server and at least one other node, wherein the confirmation data corresponds to the event. File identification information of the first control video, server identification information in which the control video is stored, time information corresponding to the control video, information on the person in charge for the control video, or a hash value of the control video.

On the other hand, another prior art 2 (KR 1950507 B1) is a blockchain-based method of providing secure processing of camera video. In this technology, the image captured by the camera is based on a block chain. As a security processing technology, in a system configured to access the video captured by the camera through a network, a security process that utilizes a blockchain technique to prevent unauthorized exposure of the camera shot video or the forgery of the shot video data due to hacking. It's about technology. According to the present invention, there is an advantage of preventing unauthorized exposure or forgery of camera shot images by hacking, and it is possible to prevent hacking of camera shot images stored in the video storage, as well as block chain update cycle (e.g. : 3 minutes) short enough, it is possible to achieve security processing even for real-time camera images, and prevent leakage or forgery of private images generated in the premises.

As such, CCTV image data may fundamentally damage integrity such as manipulation by external hacking. If CCTV video data is mounted on a blockchain, manipulation by external hacking can be prevented. There are aspects that do not fit the site requirements of, protection, and security.

In addition, there is a disadvantage that when a blockchain is envisioned in a cloud server, data integrity cannot be guaranteed in the event of loss or change in the data transmission process between CCTV and the cloud.

Prior Patent 1: Korean Patent Publication (KR 2019-0083295 A) Method and system for certifying and authenticity of digital evidence of cctv video using blockchain Prior Patent 2: Korean Patent Registration Publication (KR 1950507 B1) Blockchain-based method of providing secure processing of camera video

An object of the present invention is to provide a method and system for safe storage and transmission processing of intelligent CCTV video data using an edge block chain.

Another object of the present invention is to provide a method of removing verified data from a CCTV node in order to verify the integrity of intelligent CCTV image data using an edge block chain and save storage.

The present invention provides a system for storing and transmitting intelligent CCTV image data using an edge block chain, comprising: a plurality of CCTV nodes for generating image data by photographing CCTV images; And a cloud server including a data storage for receiving and storing the captured CCTV image data, wherein the system is divided into a plurality of edge areas including a predetermined number of nodes based on the geographic location of the CCTV node, and , Each edge area uses an edge block chain as a ledger, and the CCTV node included in the edge area further includes an edge storage for storing the edge block chain related to the captured image data, and the The edge block chain is characterized in that it is a closed block chain in which each CCTV node within the same edge area shares the same edge block chain.

According to another embodiment of the present invention, there is provided a method of processing the storage and transmission of intelligent CCTV image data using an edge blockchain, comprising: photographing CCTV image data in a plurality of CCTV nodes; Dividing into a plurality of edge areas including a predetermined number of the nodes based on the geographical location of the CCTV node; Creating an edge blockchain as one ledger for each edge area; Storing the generated edge blockchain in edge storage in the CCTV node; The edge block chain is characterized in that it is a closed block chain that shares the same edge block chain between each CCTV node within the edge area.

According to another embodiment of the present invention, as an edge block chain for processing the storage and transmission of intelligent CCTV image data, it is divided into a plurality of edge areas including a predetermined number of the nodes based on the geographical location of the CCTV nodes. And, as an edge block chain that is one ledger for each edge area, each CCTV node within the same edge area is a closed block chain that shares the same edge block chain, and the edge included in the edge block chain. The block consists of an edge block header and edge block data, and the edge block header contains an ID of a video data block consisting of a plurality of video data chunks in a CCTV node belonging to the edge area. And the edge block data includes an ID list of the plurality of chunks, the image data block is a unit stored in one edge block, and all the image data blocks and chunks have respective IDs, and the edge block The chain manages the block ID and chunk ID as data, and a program for storing and transmitting intelligent CCTV video data using an edge block chain that does not store the CCTV video data on the data area of the edge block chain is recorded. It is characterized in that it is a computer-readable recording medium.

According to the present invention, the edge block chain method was introduced for efficient storage of image information, and through this, the number of nodes required on the block chain is not large, it is possible to operate even in an ultra-light size, and end-to-end end-to-end integrity is guaranteed. It works.

The edge blockchain is characterized by the fact that CCTV becomes one node, and data deletion is also possible for completed data, so it has the advantage that the capacity required for the operation of the edge blockchain does not accumulate and increase continuously.

In addition, when integrity is damaged in the data transmission process, only the damaged part is retransmitted and recovered as original data, so it has better efficiency in the bandwidth process.

In other words, according to the present invention, while having all the advantages of the existing block chain, there is an effect that it can additionally solve the storage space problem, bandwidth problem, and end-to-end integrity security problem that could not be solved.

1 is a diagram showing a cloud server environment that stores a plurality of CCTV and image data.
2 and 3 are diagrams for explaining the structure of a general block chain.
4 is a diagram illustrating a CCTV environment to which the present invention is applied, by dividing an edge area based on a geographical location.
5 is a diagram illustrating a relationship between an edge area including an edge block chain and a cloud server according to an embodiment of the present invention.
6 is a diagram showing edge storage capable of storing data in each CCTV node.
7 is a diagram illustrating details of a data structure of an edge blockchain according to an embodiment of the present invention.
8 is a diagram showing a recording range of an edge block chain according to an embodiment of the present invention.
9 is a diagram illustrating a streaming process to a cloud server according to an embodiment of the present invention.
FIG. 10 is a diagram for explaining a method of processing when a problem occurs in chunk data as an example of occurrence of an integrity defect.
11 is a diagram illustrating a process of processing when an integrity defect occurs according to an embodiment of the present invention.
12 is a view for explaining a process of securing a data capacity of a CCTV node by removing a verified edge block according to an embodiment of the present invention.

Advantages and features of the present invention, and a method of achieving it will become more apparent with reference to the embodiments to be described later in detail together with the accompanying drawings.

However, the present invention is not limited to a few limited embodiments disclosed below, but may be implemented in various different forms within the scope of substantially the same purpose and effect, and these embodiments are also considered to be included in the technical matters of the present invention. I will be able to.

In the present specification, examples are provided to make the disclosure of the present invention clearer, and to completely understand the scope of the invention to those of ordinary skill in the art to which the present invention belongs.

And the scope of the present invention will be defined by the scope of the claims to be described later.

Accordingly, well-known components, well-known operations, and well-known detailed techniques in some embodiments have not been described in detail in order to avoid obscuring interpretation of the present invention.

In addition, throughout the specification, the same reference numerals refer to the same constituent elements, and terms used herein are only for describing exemplary embodiments, and are not intended to limit the present invention.

In the present specification, the singular form should be interpreted as including the plural form unless specifically stated in the text, and the component or action mentioned as including (or provided) does not exclude the presence or addition of one or more other components or actions. .

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings that can be 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 excessively or ideally unless otherwise defined.

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

2 and 3 are diagrams for explaining the structure of a general block chain.

Blockchain is a distributed computing technology that allows small data to be managed, called blocks, to be stored in a distributed data storage environment based on a chain-type connection created based on the P2P method, so that they cannot be arbitrarily modified and the results of future changes can be viewed. Based on data forgery prevention technology, this is a form of distributed data storage technology that is basically a change list that records continuously changing data in all participating nodes, and is designed to prevent arbitrary manipulation by the operator of the distributed node. Already well-known examples of blockchain applications include Bitcoin as a decentralized electronic ledger that records the transaction process of cryptocurrencies, and most cryptocurrencies are based on the form of blockchain technology. In other words, blockchain is a data distributed processing technology, and it is a technology in which all users participating in the network distribute and store data such as all transaction details. The data stored in this way is called a block, and it is called a block chain because several blocks are grouped in chronological order. Since all of these users have transaction details, when checking the transaction details, it is necessary to check and check the ledgers held by all users, so the blockchain is sometimes referred to as a public ledger or a distributed ledger.

A general block chain has a structure as shown in FIG. 2, and in block data, not only the transaction details of the contract, but also any type of data can be stored. For example, CCTV image information may be stored as it is in block data.

Blockchain generally can be made up of a set of numerous nodes (users) as shown in FIG. 3, and users with legitimate authority may newly participate in this node.

However, there are several difficult parts to completely configure CCTV video information with such a block chain.

First, there is a problem of how to store large amounts of data in multiple nodes (ie, in terms of storage capacity). In particular, CCTV image data is generally large, so when all CCTV images are shared by each node on a blockchain, a problem requiring a huge amount of capacity and a problem of transmission bandwidth occurs.

Next, assuming that the blockchain is configured on a cloud server, there is a question of how to know when information loss occurs due to hacking or the like in the middle of transmission between CCTV and cloud server.

4 is a diagram illustrating a situation in which a block chain is managed by dividing it into an edge area to explain the necessity of an edge block chain.

When a CCTV video surveillance system as shown in FIG. 4A is configured on a map, it is very difficult in reality to manage a large number of CCTV video data of hundreds or more with one block chain.

In the existing blockchain, it is practically impossible to store and transmit all the video data of the CCTV surveillance network, so a new blockchain structure will be required. In the present invention, an edge blockchain was devised for this purpose.

First, as shown in FIG. 4B, several edge areas are divided based on the geographical location of the CCTV. Each edge area may consist of about 3 to 5 CCTVs, and of course, the number of these specific numbers is not strictly limited, and as another example, only one edge area or 10 or more CCTVs There may also be an edge area.

5 is a diagram illustrating a relationship between an edge area including an edge block chain and a cloud server according to an embodiment of the present invention.

Here, CCTV becomes one node, and edge blockchain is one ledger between each edge area. In the same edge area, the same edge blockchain is shared between nodes 1 to 3. do.

In addition, this edge blockchain is composed of a private blockchain rather than an open one for security.

6 is a diagram showing edge storage capable of storing data in each CCTV node.

As shown in FIG. 6, CCTV nodes 1 to 3 each have edge storage capable of storing data. Edge storage can be various lightweight storage devices such as MicroSD, and the edge blockchain is commonly stored in edge storage on each CCTV node located within the same edge area.

7 is a diagram illustrating details of a data structure of an edge blockchain according to an embodiment of the present invention.

When compared with the existing block chain, the edge block chain has a block ID (Block ID) added, and the block data of the edge block has a list of chunk IDs.

First, one block (eg, block A, block B, etc.) is a unit stored in one edge block. And one block has multiple chunks of data. And every block and chunk has its own ID.

The chunk ID of the edge block is included as a list of chunk IDs in the block data of the block chain. In this case, only the block ID and chunk ID are actually managed data in the edge blockchain.

In other words, CCTV video data itself is not stored directly on the data area of the edge blockchain. The reason for processing in this way is to create and store Dash Block ID and Chunk ID that directly include real data in the blockchain because the capacity to be processed becomes too large when the entire data is shared and stored by all nodes in the edge area. .

In other words, since only the hash list is managed in the edge blockchain, there is not much capacity itself to be stored and processed by the blockchain-managed capacity and all edge participating nodes.

However, since the chunk ID and block ID are stored, the integrity of the image information (real image data) can be checked later.

The following describes how to generate the chunk ID and block ID.

The formula for creating the chunk ID is as shown in Equation 1 below.

[Equation 1]

CID =

In addition, the block ID generation formula is as shown in Equation 2 below.

[Equation 2]

BID =

The variables and indicated abbreviations used here are as follows.

S: Pre-shared secret value (requires pre-shared between edge and server)

P(x) _S : The value of generating the xth pseudorandom number with S as a seed

H(x): hashed x

HMAC(x) _K : Value of HMAC(Hash Message Authentication Code) processed value with K as key

BD: Actual Block data value

CD: Actual Chunk data value

CID: Chunk ID value

BID: Block ID value

CCTV_ID: Unique ID value of CCTV

: XOR 연산자

: XOR operator

Nonce: Nonce value on the blockchain

ctr_c: The number of current Chuck counts (e.g., starting at 1, and according to FIG. 7, ctr_c=1 for Chuck A and ctr_c=2 for Chunk B)

ctr_b: Count of the current block (e.g., starting at 1, and according to Fig. 8, ctr_b=1 in case of Block A in CCTV node A, and ctr_b=2 in case of Block B)

In the case of generating a chunk ID in this way, the chunk ID must have a CD, that is, chunk data in advance, to be able to be calculated.

On the other hand, in the case of a block ID, it is possible to generate the target CCTV ID and the S value shared in advance.

In other words, a person who does not have a pre-shared key S value cannot generate a chunk ID even if the chunk data is known in advance, and a person who does not have a pre-shared key S value cannot generate a block ID.

In other words, only those who know the pre-shared key S value can create the nth block ID of a specific CCTV.

In other words, even if a malicious person attempts to arbitrarily manipulate it, an ID corresponding to a specific chunk or block cannot be generated without knowing the pre-shared key S value.

Therefore, due to this characteristic, it is possible to prevent manipulation of image data and check whether or not to manipulate image data.

8 is a diagram showing a recording range of an edge block chain according to an embodiment of the present invention.

As shown in FIG. 8, the edge block chain records both the Chunk ID and Block ID values of all CCTVs between the same edge area. The edge blockchain ledger is managed singly between edge areas, and the corresponding edge blockchain is shared as original information in CCTV nodes between the same edge areas.

The data on the edge blockchain is a set of chunk ID and block ID values, and the size of the edge blockchain itself is not large because large-scale video data, which is actual video data, is not stored on the edge blockchain.

Here, the three main differences between the general blockchain and the edge blockchain are as follows.

1) The number of nodes included in the edge blockchain is small (i.e. limited to the number of CCTV nodes in the edge area)

2) The size required by the edge blockchain is small (that is, it is a lightweight size. The actual video is not stored in the edge blockchain, only ID is managed)

3) Edge blockchain is created and processed at the end. In other words, end-to-end security (integrity guarantee) becomes possible.

9 is a diagram illustrating a streaming process to a cloud server according to an embodiment of the present invention.

As shown in Figure 9, in the present invention, the CCTV node performs data streaming to the cloud server. Here, streaming transmission is performed in block units, and at this time, an edge block is included in the block header. In other words, the receiving side cloud?? The server can check the integrity of the actual video data (CCTV video data A included in the body) through the header of block A (which includes the edge block A).

The occurrence of integrity defects during data transmission between the CCTV node and the cloud server may be an attack by a hacker or data loss due to simple network instability during the transmission process. In the case of streaming, since edge blocks A, B, and C are transmitted together with actual image data, the cloud server can check the integrity of image information during the transmission process.

FIG. 10 is a diagram for explaining a method of processing when a problem occurs in chunk data as an example of occurrence of an integrity defect.

10 assumes that a problem occurs in Chunk A and Chunk D. Since edge block A included in the header of block A already has ID information of Chunk A and Chunk D as a chunk list, the cloud server side uses this information to prevent loss or change of the corresponding data (Chunk A and Chunk D). Problems can be detected.

11 is a diagram illustrating a process of processing when an integrity defect occurs according to an embodiment of the present invention.

The cloud server side including CCTV data storage can confirm that there is a defect in data integrity through comparison of the edge block (block header) and actual image data. In this case, a request for retransmission of integrity defect data is made to the corresponding CCTV node (Node 1) based on the ID information on the part where the integrity defect occurs.

The CCTV node (Node 1) searches for the block in the edge blockchain based on the received block ID and chunk ID. When a block is found, the actual chunk data mapped as the chunk ID is fetched.

Then, the part of the chunk data (Chunk A and Chunk D) requested by the server side (that is, only the integrity defect part) is transferred back to the cloud server side. In this case, since the entire block is not delivered, but only the chunk data in which a problem has occurred is re-delivered, transmission efficiency and transmission performance are greatly improved.

The cloud server that received only the defective part of the integrity checks the transmitted chunk from the edge blockchain again to reverify the integrity.

Thus, when the integrity verification is completed, the cloud server notifies the CCTV node (Node 1) that the integrity verification has been completed.

The CCTV node (Node 1) recognizes that the integrity verification has been confirmed and responds with a completion confirmation message.

12 is a view for explaining a process of securing a data capacity of a CCTV node by removing a verified edge block according to an embodiment of the present invention.

The CCTV node (Node 1) has edge storage, but the storage capacity that can be stored is not large. Therefore, it is necessary to more efficiently secure storage space by removing data from the storage space for which integrity verification has been completed.

This should be done periodically, especially when the edge storage storage space is running out, it should be done more quickly.

Referring to FIG. 12, a cloud server including a CCTV data storage fully verifies the integrity of image data based on an edge block, and a block ID list verified in this process is separately stored and managed.

If the CCTV node (Node 1) requests a list of verified block IDs to secure storage capacity, there may be a case.

At this time, the cloud server extracts and retrieves the verified edge block list (Block ID List).

And the cloud server responds to the CCTV node (Node 1) with the verified edge block list (Block ID List).

Based on the received block ID, the CCTV node (Node 1) finds and removes all verified edge blocks from storage. At this time, it is possible to further secure storage space by removing the verified video file.

Through the above method, video data can be handled safely and efficiently by dividing the management area into edge areas based on the edge block chain in the intelligent CCTV video surveillance environment. In particular, the lightweight block chain is suitable for the characteristics of edge storage on CCTV. Configuration is possible.

By extracting block ID and chunk ID from CCTV video data through a predetermined formula, it is possible to construct an edge block chain, and since the edge block is transmitted as header information during streaming, it is possible to guarantee end-to-end integrity, and loss in the transmission process. When it occurs, it becomes possible to detect it and restore it to the original image.

The present invention is not limited to the specific preferred embodiments described above, and any person having ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims can implement various modifications. And it will be apparent that such a change will fall within the scope of the description of the claims.

Claims (13)

In the system that processes the storage and transmission of intelligent CCTV video data using an edge block chain,
A plurality of CCTV nodes for generating image data by photographing CCTV images;
It is composed of a cloud server including a data storage for receiving and storing the captured CCTV image data,
The system divides into a plurality of edge areas including a predetermined number of nodes based on the geographic location of the CCTV node, and uses an edge blockchain as a ledger for each edge area,
The CCTV node included in the edge area further includes an edge storage for storing an edge block chain related to the captured image data,
The edge block chain is a closed block chain in which each CCTV node within the same edge area shares the same edge block chain,
The edge block included in the edge block chain is composed of an edge block header and edge block data, and the edge block header contains a plurality of video data chunks in CCTV nodes belonging to the edge area. A block ID of an image data block consisting of) is additionally included, and the edge block data includes a list of chunk IDs of the plurality of chunks.
delete The method according to claim 1,
The image data block is a unit stored in one edge block,
All the video data blocks and chunks have their respective IDs,
The edge blockchain manages the block ID and chunk ID as data, and does not store the CCTV image data in the data area of the edge blockchain. The intelligent CCTV image data storage and transmission processing system. The method of claim 3,
The block ID is an intelligent CCTV image data storage and transmission processing system, characterized in that generated according to the formula 1 below.
{Formula 1}
BID =

(However, S: secret value shared in advance between edge block and cloud server, HMAC(x) _K : value obtained by HMAC processing x with K as key,

: XOR operator, P(x) _S : The value of generating the xth pseudorandom number with S as a seed, H(x): The value of hashing x, ctr_b: The number of counts of the current edge block, BID: Block ID, CCTV_ID: CCTV node's unique ID)
The method of claim 3,
The chunk ID is an intelligent CCTV image data storage and transmission processing system, characterized in that generated according to Formula 2 below.
{Formula 2}
CID =

(However, S: the secret value shared in advance between the edge block and the cloud server, P(x) _S : The value generated by the xth pseudorandom number with S as the seed, HMAC(x) _K : HMAC processing the x with K as the key One value,

: XOR operator, H(x): hashed value of x, Nonce: nonce value on the blockchain, ctr_c: current chuck count, CID: Chunk ID, CD: actual chunk data)
The method according to claim 4 or 5,
The block ID can be created only by knowing the ID of the CCTV node and the S value, which is the pre-shared secret value,
The chunk ID is an intelligent CCTV image data storage and transmission processing system, characterized in that it is possible to check whether the CCTV image data has been manipulated or not because the chunk ID must have a CD value as the chunk data.
The method of claim 3,
The edge blockchain records the block ID and chunk ID values of all CCTV nodes within the same edge area,
All CCTV nodes within the same edge area share the original information of the same edge block chain with each other.
The method of claim 7,
The CCTV node streams and transmits the captured image data to the cloud server in block units,
Storage of intelligent CCTV image data, characterized in that the header information of each block of the transmitted image data includes information of the edge block corresponding to the block, and the body information includes the actual captured image data. Transmission processing system.
The method of claim 8,
The cloud server receiving the streaming transmission performs integrity verification by comparing the block ID and chunk ID included in the edge block with actual image data,
When an integrity defect occurs, the block ID and the chunk ID of the corresponding part where the defect occurs are transmitted to the CCTV node, and only the chunk data in the block corresponding to the defect is received again to complete the integrity verification. Data storage and transmission processing system.
The method of claim 9,
The cloud server performs data integrity verification based on the edge block, stores the verified block ID list, and delivers the block ID list when requested from the CCTV node,
The CCTV node is an intelligent CCTV image data storage and transmission processing system, characterized in that it removes the verified edge block based on the received block ID list and also removes the corresponding image data.
In the method of processing the storage and transmission of intelligent CCTV video data using an edge block chain,
Photographing CCTV image data in a plurality of CCTV nodes;
Dividing into a plurality of edge areas including a predetermined number of the nodes based on the geographical location of the CCTV node;
Creating an edge blockchain as one ledger for each edge area;
Storing the generated edge blockchain in edge storage in the CCTV node;
The edge block chain is a closed block chain that shares the same edge block chain between each CCTV node within the edge area, and the edge block included in the edge block chain includes an edge block header and edge block data ( block data), and the edge block header additionally includes a block ID of a video data block composed of a plurality of video data chunks in a CCTV node belonging to the edge area, and the edge block data includes the plurality of An intelligent CCTV video data storage and transmission processing method, characterized in that it includes a list of chunk IDs of three chunks.
The method of claim 11,
Streaming the image data captured by the CCTV node to a cloud server in block units;
Performing integrity verification by comparing each block ID and chunk ID of the edge block included in the edge block chain with actual image data in the cloud server receiving the streaming transmission;
When an integrity defect occurs, transmitting a block ID and a chunk ID of the corresponding portion where the defect occurs to the CCTV node to re-receive only the chunk data in the block corresponding to the defect;
Storing a verified block ID list when data integrity verification is completed;
Transmitting the block ID list to the CCTV node upon request from the CCTV node; And
And removing the verified edge block based on the block ID list received from the CCTV node and removing the corresponding image data.
As an edge block chain for processing the storage and transmission of intelligent CCTV image data, it is divided into a plurality of edge areas including a predetermined number of the nodes based on the geographical location of the CCTV nodes, and one ledger for each edge area. As an edge blockchain, each CCTV node within the same edge area is a closed blockchain that shares the same edge blockchain, and the edge blocks included in the edge blockchain include an edge block header and The ID of a video data block consisting of a plurality of video data chunks in a CCTV node belonging to the edge area is included in the edge block header, and the edge block data includes the plurality of A list of IDs of three chunks is included, and the image data block is a unit that is stored in one edge block, and all the image data blocks and chunks have respective IDs, and the edge block chain stores the block ID and the chunk ID. A computer-readable recording medium in which a program for storing and transmitting intelligent CCTV image data using an edge block chain is recorded, characterized in that the CCTV image data is not stored in the data area of the edge block chain. .

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