KR20220168415A - Embedding blockchain method and system using external storage media - Google Patents

Abstract

An embedding blockchain method using an external storage medium and a system thereof are disclosed. The embedding blockchain method comprises the following steps of: transmitting blockchain data to an external storage medium if the blockchain data satisfies an upload condition; receiving an address where the blockchain data is stored from the external storage medium; and transmitting the address to a second blockchain system. The second blockchain system transmits the address to allow a user terminal to receive the blockchain data from the external storage medium when the blockchain data is requested from the user terminal.

Description

Embedding block chain method and system using external storage media

The present invention relates to an embedded blockchain method and apparatus, and more particularly, to a method and system for reducing the size of data stored in a blockchain system using an external storage medium.

In the blockchain system, as the size of data stored in the blockchain increases, the size of the storage space that each node of the blockchain must include also increases. However, since the capacity of the storage medium has limitations in terms of cost and performance, it is necessary to reduce the weight of blockchain data.

Conventional block-chain lightweight technology summarizes block-chain data to create one block and deletes the rest of the block-chain. However, the conventional blockchain lightweight technology has a problem in that data loss occurs due to data summary.

Therefore, there is a demand for a method of reducing the capacity of a block chain without data loss.

The present invention is to reduce the capacity of the block chain by storing the block chain data in an external storage medium and managing the address where the block chain data is stored in the external storage medium as a block chain when the block chain data increases to a predetermined size or more. Methods and systems can be provided.

In addition, the present invention verifies the block chain data before storing it in an external storage medium, and verifies the last block hash by bringing the block chain from the address where the block chain data is stored, thereby ensuring that the data stored in the external storage medium is not forged or tampered with. A method and system can be provided.

An embedding block chain method according to an embodiment of the present invention includes the steps of transmitting the block chain data to an external storage medium when the block chain data satisfies an upload condition; Receiving an address where the block chain data is stored from the external storage medium; And transmitting the address to a second block chain system, wherein the second block chain system, when receiving a request for the block chain data from a user terminal, transmits the address so that the user terminal can use the external storage medium. It is possible to receive the block chain data from

In the step of transmitting to the external storage medium of the embedding block chain method according to an embodiment of the present invention, when the block chain data exceeds a preset size or length, it is determined that the block chain data satisfies the upload condition. can do.

In the step of transmitting to the external storage medium of the embedding block chain method according to an embodiment of the present invention, the current time is a preset time, or the difference between the current time and the time when the previous block chain data is transmitted to the external storage medium is the default In the case of a set time interval, it can be determined that the block chain data satisfies the upload condition.

In the step of transmitting to the external storage medium of the embedding block chain method according to an embodiment of the present invention, if the current block chain data is a block at a preset location, it can be determined that the block chain data satisfies the upload condition. .

In the step of transmitting to the external storage medium of the embedding block chain method according to an embodiment of the present invention, when the block chain data satisfies the upload condition, the block chain data is verified, and the block chain data is verified. If passed, the block chain data can be transmitted to an external storage medium.

The embedding block chain method according to an embodiment of the present invention may further include restarting the block chain by setting the hash value of the last block of the address to the genesis block.

In the embedding block chain method according to an embodiment of the present invention, when the hash value of the last block of the address is set to the genesis block, the hash value held by each of the block chain nodes included in the first block chain system is set to the last block. A step of verifying whether the signature is the same as the hash value and validating the signature may be further included.

An embedding block chain method according to an embodiment of the present invention includes receiving an address of an external storage medium in which a first block chain signature and block chain data are stored from a first block chain system; verifying the signature of the first block chain using a public key of the first block chain system; and storing the address as block chain data of a second block chain system when the first block chain signature is verified.

The embedding block chain method according to an embodiment of the present invention further includes transmitting the address when the block chain data is requested from a user terminal, and the user terminal stores the external storage medium according to the address. It is possible to receive the block chain data from the external storage medium by accessing it.

The step of verifying the first block chain signature of the embedding block chain method according to an embodiment of the present invention includes receiving a first block chain signature and a first block chain certificate from the first block chain system; decrypting the certificate to obtain a public key of the first block chain system; verifying the first blockchain signature with the public key; and storing the genesis block when the first block chain signature is verified.

The embedding block chain system according to an embodiment of the present invention transmits the block chain data to an external storage medium when the block chain data satisfies the upload condition, and receives the address where the block chain data is stored from the external storage medium. and a first block chain system for transmitting the address to a second block chain system; and a second block chain system that stores the address and transmits the address when the block chain data is requested from the user terminal so that the user terminal receives the block chain data from the external storage medium. there is.

In the first block chain system of the embedding block chain system according to an embodiment of the present invention, when the block chain data satisfies the upload condition, the block chain data is verified, and the block chain data passes verification. In this case, the block chain data can be transmitted to an external storage medium.

The first block chain system of the embedding block chain system according to an embodiment of the present invention may restart the block chain by setting the hash value of the last block of the address to the genesis block.

The second block chain system of the embedding block chain system according to an embodiment of the present invention receives the address of the external storage medium in which the first block chain signature and block chain data are stored from the first block chain system, and receives the first block chain data. The first block chain signature is verified using the public key of the chain system, and when the first block chain signature is verified, the address can be stored as block chain data of the second block chain system.

The second block chain system of the embedding block chain system according to an embodiment of the present invention receives a first block chain signature and a first block chain certificate from the first block chain system, decrypts the certificate, and A public key of one block chain system is acquired, the signature of the first block chain is verified with the public key, and the genesis block can be stored when the signature of the first block chain is verified.

According to one embodiment of the present invention, when the block chain data increases to a predetermined size or more, by storing the block chain data in an external storage medium and managing the address where the block chain data is stored in the external storage medium as a block chain, The capacity of the chain can be reduced.

In addition, according to one embodiment of the present invention, the data stored in the external storage medium is verified by verifying the block chain data before storing it in the external storage medium and verifying the last block hash by bringing the block chain from the address where the block chain data is stored. It can be guaranteed that the above is not tampered with.

1 is a diagram illustrating an embedded block chain system according to an embodiment of the present invention.
2 is a diagram illustrating an operation process of an embedding block chain system according to an embodiment of the present invention.
3 is a diagram illustrating a certificate and signature registration process of an embedded block chain system according to an embodiment of the present invention.
4 is a diagram illustrating an address registration process of an embedded block chain system according to an embodiment of the present invention.
5 is a diagram illustrating an address verification and restart process of an embedded block chain system according to an embodiment of the present invention.
6 is a flowchart illustrating an embedding block chain method performed by a block chain client according to an embodiment of the present invention.
7 is a flowchart illustrating an embedding block chain method performed by the second block chain system according to an embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes can be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents or substitutes to the embodiments are included within the scope of rights.

Terms used in the examples are used only for descriptive purposes and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are given to the same components regardless of reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description will be omitted.

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

1 is a diagram illustrating an embedded block chain system according to an embodiment of the present invention.

The embedded block chain system may include a first block chain system 110, an external storage medium 120, and a second block chain system 130 as shown in FIG.

The first block chain system 110 may be composed of a block chain client 111 and a plurality of block chain nodes. In addition, the block chain client 111 is one of the block chain nodes included in the first block chain system 110, transmits block chain data to the external storage medium 120, and transmits the address where the block chain data is stored to the second block chain. It may be a block chain node that performs an operation of transmitting to the block chain system 130.

That is, the block chain client 111 may be a node that performs the embedding block chain method among block chain nodes included in the first block chain system 110 . Depending on the embodiment, all block chain nodes included in the first block chain system 110 may operate as block chain clients 111, and among block chain nodes included in the first block chain system 110, the block chain A block chain node to operate as the client 111 may be designated.

In addition, the external storage medium 120 may be a separate storage medium not included in the first block chain system 110 and the second block chain system 130, as shown in FIG. Among the block chain nodes included in the system 110, a block chain node other than the block chain client 111 may be a separate storage medium not used in the block chain system.

The block chain client 111 may check whether the block chain data stored in the first block chain system 110 satisfies the upload condition. For example, if the block chain data exceeds a preset size or length, the block chain client 111 may determine that the block chain data satisfies the upload condition. In addition, when the current time is a preset time or the difference between the current time and the time when the previous block chain data is transmitted to the external storage medium 120 is a preset time interval, the block chain client 111 determines that the block chain data is uploaded. It may be determined that the condition is satisfied.

And, if the current block chain data is a block at a preset location, the block chain client 111 may determine that the block chain data satisfies the upload condition. For example, when the upload condition is set to be the M-th block, the block chain client 111 selects the M-th block, the 2M-th block, The 3Mth block,?? can be judged as block chain data that satisfies the upload condition.

And, when the block chain data stored in the first block chain system 110 satisfies the upload condition, the block chain client 111 may transmit the block chain data to the external storage medium 120. At this time, the block chain client 111 verifies the block chain data, and when the block chain data passes the verification, it may transmit the block chain data to the external storage medium 120.

At this time, the external storage medium 120 may store the received block chain data and transmit the address where the block chain data is stored to the block chain client 111.

The block chain client 111 may transmit the address where block chain data is stored to the second block chain system 130 .

At this time, the second block chain system 130 may store the received address as block chain data of the second block chain system. And, the second block chain system 130 may receive a request for block chain data stored in the external storage medium 120 from the user terminal. At this time, the second block chain system 130 may transmit the address received and stored from the block chain client 111 to the user terminal. At this time, the user terminal may receive block chain data from the external storage medium 120 by accessing the external storage medium 120 according to the received address.

In addition, the block chain client 111 may restart the block chain by setting the last block hash value of the address where the block chain data is stored as the genesis block. At this time, when the last block hash value of the address where the block chain data is stored is set to the genesis block, the block chain client 111 retrieves the hash value possessed by each of the block chain nodes included in the first block chain system 110. It can be verified by checking whether it is the same as the last block hash value and validating the signature.

In addition, the block chain client 111 may transmit the address of the external storage medium in which the first block chain signature and block chain data are stored to the second block chain system 130 before transmitting the address where the block chain data is stored.

At this time, the second block chain system 130 may verify the first block chain signature using the public key of the first block chain system.

Specifically, the second block chain system 130 may receive a first block chain signature and a first block chain certificate from the block chain client 111 of the first block chain system. At this time, the blockchain client 111 may generate the first blockchain signature by collecting signatures generated by each of the blockchain nodes of the first blockchain system by encrypting the genesis block hash value with their own private key. At this time, the genesis block hash value may be the hash value of the first block among the blocks stored in each of the block chain nodes. For example, the genesis block hash value consists of (block number: 0, previous block hash: empty, data: empty) from the existing block structure, block number, block hash, previous block hash, and data (transaction list). It can be a hashed value.

In addition, the second block chain system 130 may obtain the public key of the first block chain system 110 by decrypting the first block chain certificate. Next, the second block chain system 130 may verify the first block chain signature with the obtained public key.

At this time, the second block chain system 130 can decrypt the genesis block hash value from each of the signatures included in the first block chain signature. And, if all the decrypted genesis block hash values are the same, the second block chain system 130 may determine that the first block chain signature is verified.

When the first blockchain signature is verified, the second blockchain system 130 may store the genesis block hash value and the public key of the first blockchain system 110 . On the other hand, if the first block chain signature is not verified, the second block chain system 130 may not store the genesis block hash value.

The embedded block chain system increases the capacity of the block chain by storing the block chain data in an external storage medium and managing the address where the block chain data is stored in the external storage medium as a block chain when the block chain data increases to a predetermined size or more. can be lightened.

In addition, the embedding blockchain system verifies block chain data before storing it in an external storage medium, and verifies the last block hash by bringing the block chain from the address where the block chain data is stored, so that the data stored in the external storage medium is not forged or tampered with. can guarantee

2 is a diagram illustrating an operation process of an embedding block chain system according to an embodiment of the present invention.

In step 210, the block chain client 111 of the first block chain system 110 may check whether the block chain data 211 satisfies the upload condition.

When the block chain data 211 satisfies an upload condition such as a predetermined size or time, the block chain client 111 may transmit the block chain data to the external storage medium 120.

In step 220, the external storage medium 120 may store the received block chain data and transmit the address where the block chain data is stored to the block chain client 111.

In step 230, the block chain client 111 may transmit the address where the block chain data is stored to the second block chain system 130. At this time, the second block chain system 130 may store the received address 231 as block chain data of the second block chain system. Specifically, the second block chain system 130 may request the last hash of block chain data by accessing the external storage medium 120 using the received address 231 . In addition, the second block chain system 130 may store a block including the last hash and address 231 of the block chain data received from the external storage medium 120 as block chain data of the two block chain system.

In step 240, the second block chain system 130 may receive a request for block chain data stored in the external storage medium 120 from the user terminal 200. At this time, the second block chain system 130 may transmit the address received and stored from the block chain client 111 to the user terminal 200 . In addition, the second block chain system 130 may transmit the last hash of block chain data received from the external storage medium 120 to the user terminal 200 .

In step 250, the user terminal 200 may request block chain data by accessing the external storage medium 120 according to the address received in step 250.

In step 260, the external storage medium 120 may transmit block chain data to the user terminal 200 according to the request of the user terminal 200. At this time, the user terminal 200 may compare the last hash of the block chain data received from the external storage medium 120 and the last hash received from the second block chain system 130 . And, when the last hash of the block chain data received from the external storage medium 120 and the last hash received from the second block chain system 130 are the same, the user terminal 200 receives the block chain data received from the external storage medium 120. It is determined that the block chain data has not been forged and tampered with, and the received block chain data can be provided to the user.

In addition, when the last hash of the blockchain data received from the external storage medium 120 and the last hash received from the second blockchain system 130 are different, the user terminal 200 receives the received data from the external storage medium 120. It is determined that one block chain data has been forged and tampered with, and the user can be notified that the block chain data has been forged and tampered with.

3 is a diagram illustrating a certificate and signature registration process of an embedded block chain system according to an embodiment of the present invention.

The blockchain client 111 includes the first blockchain node 1 certificate, which is the certificate of the first blockchain node 1 of the first blockchain system, the first blockchain node 2 certificate, which is the certificate of the first blockchain node 2, and the first blockchain node 2 certificate. A first blockchain node 3 certificate, which is a certificate of blockchain node 3, may be collected. In addition, the blockchain client 111 transmits the first blockchain certificate 310 including the first blockchain node 1 certificate, the first blockchain node 2 certificate, and the first blockchain node 3 certificate to the second blockchain system. (130).

In addition, the blockchain client 111 has the signature of the first blockchain node 1 generated by the first blockchain node 1 of the first blockchain system by encrypting the genesis block hash value with its own private key, and the first blockchain node 2. The first block chain node 2 signature generated by encrypting the genesis block hash value with its private key, and the first block chain node 3 signature generated by the first block chain node 3 encrypting the genesis block hash value with its private key can be collected

In addition, the blockchain client 111 converts the first blockchain signature 320 including the signature of the first blockchain node 1, the signature of the first blockchain node 2, and the signature of the first blockchain node 3 to the second blockchain system. (130).

At this time, the second block chain system 130 may obtain the public key of the first block chain system 110 by decrypting the first block chain certificate. Next, the second block chain system 130 may verify the first block chain signature 420 with the obtained public key.

For example, when the result of decrypting the signatures included in the first block chain signature 420 with the public key is the same, the second block chain system 130 may determine that the first block chain signature is verified. In addition, when the results obtained by decrypting the signatures included in the first block chain signature 420 with the public key are different, the second block chain system 130 may determine that the first block chain signature has not been verified.

When the first blockchain signature is verified, the second blockchain system 130 may store the genesis block. On the other hand, if the first blockchain signature is not verified, the second blockchain system 130 may not store the genesis block.

4 is a diagram illustrating an address registration process of an embedded block chain system according to an embodiment of the present invention.

The block chain client 111 may check whether the block chain data stored in the first block chain system 110 satisfies the upload condition. For example, if the block chain data exceeds a preset size or length, the block chain client 111 may determine that the block chain data satisfies the upload condition. In addition, when the current time is a preset time or the difference between the current time and the time when the previous block chain data is transmitted to the external storage medium 120 is a preset time interval, the block chain client 111 determines that the block chain data is uploaded. It may be determined that the condition is satisfied.

When the block chain data stored in the first block chain system 110 satisfies the upload condition, the block chain client 111 can verify the block chain data. For example, the block chain client 111 may perform multi-signature verification on signatures included in the first block chain signature 320 .

In addition, since block chain data connects block hash values from the first block to the last block, if the data of at least one block from the first block to the last block is changed, the hash values of all blocks may change. Therefore, by checking the last block hash value, it is possible to check whether the block chain data has been forged or altered.

Therefore, the blockchain client 111 transmits the last block hash value of the blockchain data to the blockchain nodes included in the first blockchain system 110, and the last block chain data managed by each of the blockchain nodes. You can request confirmation whether it is the same as the block hash value. In addition, each blockchain node can check whether the last block hash value received is the same as the last block hash value it has stored. In addition, when the received last block hash value and the last block hash value stored by the block chain nodes are the same, each of the block chain nodes may transmit a signature to the block chain client 111 or another block chain node. When the last block hash value is the same in all nodes, the block chain client 111 may determine that the block chain data has passed verification.

For example, the blockchain client 111 may transmit the last block hash value to the first blockchain node 3. In addition, if the last block hash value received and the last block hash value stored by the first block chain node 3 are the same, the first block chain node 3 signature and the last block hash value will be transmitted to the first block chain node 2. can

The first block chain node 2 and the first block chain node 1 may also operate in the same way as the first block chain node 3. In addition, when the first block chain node 1 has the same last block hash value as the received last block hash value, the first block chain node 1 signature is the first block chain received from the first block chain node 2. The node 2 signature, the first block chain node 3 signature, and the last block hash value may be transmitted to the block chain client 111.

In addition, the blockchain client 111 may transmit the last block hash value to the first blockchain node 3, the first blockchain node 2, and the first blockchain node 1 in parallel. And, the blockchain client 111 receives the first blockchain node 1 signature, the first blockchain node 2 signature, and the first blockchain node 2 signature from the first blockchain node 3, the first blockchain node 2, and the first blockchain node 1. Can receive block chain node 3 signature. At this time, if a signature is not received from at least one blockchain node, the blockchain client 111 may determine that the blockchain data does not pass verification.

If the block chain data passes verification, the block chain client 111 is the last block chain node among the block chain nodes included in the first block chain system 110, and the last block hash value and the first block chain signature 320 ) can be transmitted. At this time, the last block chain node may be the node that last transmitted the signature to the block chain client 111. For example, the last block chain node in FIG. 4 may be the first block chain node 1.

Next, the block chain client 111 may transmit block chain data to the external storage medium 120. At this time, the external storage medium 120 may store the received block chain data and transmit the address where the block chain data is stored to the block chain client 111.

The block chain client 111 may transmit the address 410 and the first block chain signature 320 received from the external storage medium 120 to the second block chain system 130. At this time, the second block chain system 130 may store the received address 231 as block chain data of the second block chain system.

5 is a diagram illustrating an address verification and restart process of an embedded block chain system according to an embodiment of the present invention.

The second block chain system 130 may receive a first block chain signature and a first block chain certificate from the block chain client 111 of the first block chain system. At this time, the second block chain system 130 may obtain the public key of the first block chain system 110 by decrypting the first block chain certificate 310 . Next, the second block chain system 130 may verify the first block chain signature 320 with the obtained public key. When the first block chain signature is verified, the second block chain system 130 may store an address where block chain data is stored and a time stamp 510 . In this case, the time stamp may be information indicating the time when the block was created according to the address where block chain data is stored in the second block chain system 130 . And, the time stamp can be used to check the creation time of the block in the process of the second block chain system 130 maintaining the block chain data.

In addition, the block chain client 111 of the first block chain system 110 may restart the block chain by setting the hash value of the last block of block chain data to the genesis block. At this time, when the last block hash value of the block chain data is set to the genesis block, the block chain client 111 converts the hash value held by each of the block chain nodes included in the first block chain system 110 to the last block hash value. It can be verified by checking whether it is equal to the value and validating the signature.

6 is a flowchart illustrating an embedding block chain method performed by a block chain client according to an embodiment of the present invention.

In step 610, the block chain client 111 may transmit the address of the external storage medium in which the first block chain signature and block chain data are stored to the second block chain system 130.

In step 620, the blockchain client 111 may check whether the blockchain data stored in the first blockchain system 110 satisfies the upload condition. For example, if the block chain data exceeds a preset size or length, the block chain client 111 may determine that the block chain data satisfies the upload condition. In addition, when the current time is a preset time or the difference between the current time and the time when the previous block chain data is transmitted to the external storage medium 120 is a preset time interval, the block chain client 111 determines that the block chain data is uploaded. It may be determined that the condition is satisfied. And, if the current block chain data is a block at a preset location, the block chain client 111 may determine that the block chain data satisfies the upload condition.

When the block chain data stored in the first block chain system 110 satisfies the upload condition, the block chain client 111 may perform step 630. In addition, when the block chain data stored in the first block chain system 110 does not satisfy the upload condition, the block chain client 111 determines when the block chain data stored in the first block chain system 110 satisfies the upload condition. Step 620 may be repeatedly performed until.

In step 630, the block chain client 111 may verify the block chain data.

In step 640, the block chain client 111 may check whether the verification in step 630 is successful. If the verification is successful, the block chain client 111 may perform step 650. Also, if verification fails, the block chain client 111 may perform step 620.

In step 650, the block chain client 111 may transmit block chain data to the external storage medium 120. At this time, the external storage medium 120 may store the received block chain data and transmit the address where the block chain data is stored to the block chain client 111.

In step 660, the block chain client 111 may receive an address where block chain data is stored from the external storage medium 120.

In step 670, the block chain client 111 may transmit the address where the first block chain signature and block chain data are stored to the second block chain system 130.

In step 680, the block chain client 111 may restart the block chain by setting the last block hash value of the address where the block chain data is stored as the genesis block.

7 is a flowchart illustrating an embedding block chain method performed by the second block chain system according to an embodiment of the present invention.

In step 710, the second block chain system 130 may receive a first block chain signature and a first block chain certificate from the block chain client 111 of the first block chain system.

In step 720, the second block chain system 130 may obtain the public key of the first block chain system 110 by decrypting the first block chain certificate received in step 720.

In step 730, the second block chain system 130 may verify the first block chain signature with the public key obtained in step 720.

In step 740, the second blockchain system 130 may check whether the verification of step 730 is successful. If the verification is successful, the second blockchain system 130 may perform step 750. Also, if verification fails, the second block chain system 130 may perform step 710.

In step 750, the second blockchain system 130 may store the genesis block.

In step 760, the second block chain system 130 may receive the address where the first block chain signature and block chain data are stored from the block chain client 111.

In step 770, the second block chain system 130 may verify the first block chain signature received in step 760 with the public key obtained in step 720.

In step 780, the second block chain system 130 may check whether the verification in step 770 is successful. If verification is successful, the second blockchain system 190 may perform step 750. Also, if verification fails, the second block chain system 130 may perform step 760.

In step 790, the second block chain system 130 may store the address received in step 770 as block chain data of the second block chain system.

The present invention can reduce the capacity of the block chain by storing the block chain data in an external storage medium and managing the address where the block chain data is stored in the external storage medium as a block chain when the block chain data increases to a predetermined size or more. can

In addition, the present invention verifies the block chain data before storing it in an external storage medium, and verifies the last block hash by bringing the block chain from the address where the block chain data is stored, thereby ensuring that the data stored in the external storage medium is not forged or tampered with. can do.

On the other hand, the embedding block chain system or the embedding block chain method according to the present invention is written as a program that can be executed on a computer and can be implemented in various recording media such as magnetic storage media, optical reading media, and digital storage media.

Implementations of the various techniques described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or combinations thereof. Implementations may include a computer program product, e.g., a machine-readable storage device (computer readable storage device), for processing by, or for controlling the operation of, a data processing device, e. can be implemented as a computer program tangibly embodied in a viable medium). A computer program, such as the computer program(s) described above, may be written in any form of programming language, including compiled or interpreted languages, and may be written as a stand-alone program or in a module, component, subroutine, or computing environment. It can be deployed in any form, including as other units suitable for the use of. A computer program can be deployed to be processed on one computer or multiple computers at one site or distributed across multiple sites and interconnected by a communication network.

Processors suitable for processing a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from read only memory or random access memory or both. Elements of a computer may include at least one processor that executes instructions and one or more memory devices that store instructions and data. In general, a computer may include, receive data from, send data to, or both, one or more mass storage devices that store data, such as magnetic, magneto-optical disks, or optical disks. It can also be combined to become. Information carriers suitable for embodying computer program instructions and data include, for example, semiconductor memory devices, for example, magnetic media such as hard disks, floppy disks and magnetic tapes, compact disk read only memory (CD-ROM) ), optical media such as DVD (Digital Video Disk), magneto-optical media such as Floptical Disk, ROM (Read Only Memory), RAM (RAM) , Random Access Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), and the like. The processor and memory may be supplemented by, or included in, special purpose logic circuitry.

In addition, computer readable media may be any available media that can be accessed by a computer, and may include all computer storage media.

Although this specification contains many specific implementation details, they should not be construed as limiting on the scope of any invention or what is claimed, but rather as a description of features that may be unique to a particular embodiment of a particular invention. It should be understood. Certain features that are described in this specification in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable subcombination. Further, while features may operate in particular combinations and are initially depicted as such claimed, one or more features from a claimed combination may in some cases be excluded from that combination, and the claimed combination is a subcombination. or sub-combination variations.

Similarly, while actions are depicted in the drawings in a particular order, it should not be construed as requiring that those actions be performed in the specific order shown or in the sequential order, or that all depicted actions must be performed to obtain desired results. In certain cases, multitasking and parallel processing can be advantageous. Further, the separation of various device components in the embodiments described above should not be understood as requiring such separation in all embodiments, and the program components and devices described may generally be integrated together into a single software product or packaged into multiple software products. You have to understand that you can.

On the other hand, the embodiments of the present invention disclosed in this specification and drawings are only presented as specific examples to aid understanding, and are not intended to limit the scope of the present invention. In addition to the embodiments disclosed herein, it is obvious to those skilled in the art that other modified examples based on the technical idea of the present invention can be implemented.

110: first block chain system
120: external storage medium
130: second block chain system

Claims (17)

If the block chain data satisfies the upload condition, transmitting the block chain data to an external storage medium;
Receiving an address where the block chain data is stored from the external storage medium; and
Transmitting the address to a second blockchain system
including,
The second block chain system,
When the block chain data is requested from the user terminal, the embedding block chain method transmits the address so that the user terminal receives the block chain data from the external storage medium. According to claim 1,
The step of transmitting to the external storage medium,
The embedding block chain method of determining that the block chain data satisfies an upload condition when the block chain data exceeds a preset size or length. According to claim 1,
The step of transmitting to the external storage medium,
When the current time is a preset time or the difference between the current time and the time when the previous block chain data is transmitted to an external storage medium is a preset time interval, the block chain data satisfies the upload condition. Embedding block chain method. According to claim 1,
The step of transmitting to the external storage medium,
An embedding block chain method of determining that the block chain data satisfies the upload condition if the current block chain data is a block at a preset location. According to claim 1,
The step of transmitting to the external storage medium,
If the block chain data satisfies the upload condition, verify the block chain data,
When the block chain data passes verification, the embedding block chain method of transmitting the block chain data to an external storage medium. According to claim 1,
Restarting the block chain by setting the last block hash value of the address as the genesis block
Embedding blockchain method further comprising. According to claim 6,
If the last block hash value of the address is set to the genesis block, check whether the hash value held by each of the block chain nodes included in the first block chain system is the same as the last block hash value and the validity of the signature step to verify
Embedding blockchain method further comprising. Receiving an address of an external storage medium in which a first block chain signature and block chain data are stored from a first block chain system;
verifying the signature of the first block chain using a public key of the first block chain system; and
Storing the address as block chain data of a second block chain system when the first block chain signature is verified.
Embedding blockchain method including. According to claim 8,
Accessing the external storage medium with the address and requesting the last hash of the block chain data;
Including more,
The step of storing as the block chain data,
An embedding block chain method for storing a block including the last hash and the address as block chain data of a second block chain system. According to claim 8,
Transmitting the address when the block chain data is requested from the user terminal
Including more,
The user terminal,
An embedding block chain method for accessing the external storage medium according to the address and receiving the block chain data from the external storage medium. According to claim 10,
The user terminal,
Receiving the last hash of the block chain data together with the address from a second block chain system;
Embedding block chain method for comparing the last hash of the block chain data received from the external storage medium and the last hash received from the second block chain system to check whether the block chain data stored in the external storage medium is forged or falsified. According to claim 8,
The step of verifying the first block chain signature,
Receiving a first block chain signature and a first block chain certificate from the first block chain system;
decrypting the certificate to obtain a public key of the first block chain system;
verifying the first blockchain signature with the public key; and
Storing the genesis block when the first block chain signature is verified
Embedding blockchain method including. When the block chain data satisfies the upload condition, the block chain data is transmitted to an external storage medium, the address where the block chain data is stored is received from the external storage medium, and the address is transmitted to the second block chain system 1st block chain system; and
A second block chain system that stores the address and transmits the address when the block chain data is requested from the user terminal so that the user terminal receives the block chain data from the external storage medium.
Embedded blockchain system that includes. According to claim 13,
The first block chain system,
If the block chain data satisfies the upload condition, the block chain data is verified, and if the block chain data passes the verification, the block chain data is transmitted to an external storage medium. According to claim 13,
The first block chain system,
An embedded block chain system that restarts the block chain by setting the last block hash value of the address to the genesis block. According to claim 13,
The second block chain system,
Receiving the address of the external storage medium in which the first block chain signature and block chain data are stored from the first block chain system;
The first block chain signature is verified using the public key of the first block chain system;
When the first block chain signature is verified, the embedded block chain system stores the address as block chain data of the second block chain system. According to claim 16,
The second block chain system,
Receiving a first block chain signature and a first block chain certificate from the first block chain system;
Decrypting the certificate to obtain a public key of the first block chain system;
verifying the first block chain signature with the public key;
When the first block chain signature is verified, the embedded block chain system for storing the genesis block.

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