CN110290111A - Operating right management method, device and block chain node, storage medium - Google Patents
Operating right management method, device and block chain node, storage medium Download PDFInfo
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- CN110290111A CN110290111A CN201910459400.1A CN201910459400A CN110290111A CN 110290111 A CN110290111 A CN 110290111A CN 201910459400 A CN201910459400 A CN 201910459400A CN 110290111 A CN110290111 A CN 110290111A
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- block
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
- H04L63/0876—Network architectures or network communication protocols for network security for authentication of entities based on the identity of the terminal or configuration, e.g. MAC address, hardware or software configuration or device fingerprint
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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Abstract
Present disclose provides a kind of operating right management method, device and block chain nodes, storage medium, are related to field of communication technology.The operating right management method executes the block of rights management by determining；Then according to the intelligent contract stored in determined block, whether defining the competence, it is legal to the operation behavior of block chain to manage object；Finally when operation behavior of the rights management object to block chain is confirmed as legal, the rights management object is allowed to execute the operation behavior to block chain, from the leakage problem that may be not present to the Crypted password of data, while malicious node attack is also avoided, improves the safety of data.
Description
Technical field
This disclosure relates to field of communication technology, and in particular, to a kind of operating right management method, device and block chain link
Point, storage medium.
Background technique
In the level of application scenarios, block chain can be divided into publicly-owned chain, privately owned chain, alliance's chain etc..Publicly-owned chain, which refers to, appoints
Common recognition can be added in who, and can read write-in common recognition data；The common recognition of alliance's chain is clicked through by some block chain links preselected
Row controls, and exists simultaneously the relationship cooperated with each other and do not trusted each other between block chain node；And privately owned chain refers to write-in permission
It is controlled by the promoter of chain, and it is readable limited.For privately owned chain and alliance's chain, if the operation behavior to block chain is not subject to
Isolation control or legal verifying, privately owned chain, alliance's chain be typically easy to only to be possessed a small amount of malicious node attack for calculating power and compared with
Difficult pursuit attack source, Information Security are low.
In the prior art, usually using modes such as Network Isolation, data encryption and communication encryptions, privately owned chain, connection are reduced
Alliance's chain is only possessed the risk of a small amount of malicious node attack for calculating power, once however Network Isolation not enough thoroughly or password is let out
Reveal and privately owned chain, alliance's chain is caused to be disclosed, privately owned chain, the safety of data in alliance's chain are still lower.
Summary of the invention
To overcome the problems in correlation technique, present disclose provides a kind of operating right management method, device and areas
Block chain node, storage medium.
According to the first aspect of the embodiments of the present disclosure, a kind of operating right management method is provided, block link network is applied to
Block chain node in network, which comprises
Determine the block for executing rights management；
According to the intelligent contract stored in determined block, defining the competence manages object and is to the operation behavior of block chain
It is no legal；
When operation behavior of the rights management object to block chain is confirmed as legal, allow the rights management object pair
Block chain executes the operation behavior.
According to embodiment of the present disclosure second aspect, a kind of operation behavior rights management device is additionally provided, is applied to block
Block chain node in chain network, described device include:
Block determining module is configured to determine the block for executing rights management；
Legal determining module is configured to according to the intelligent contract stored in determined block, and define the competence management pair
As whether the operation behavior to block chain is legal；
Operation behavior execution module, be configured to when rights management object the operation behavior of block chain is confirmed as it is legal
When, allow the rights management object to execute the operation behavior to block chain.
According to the embodiment of the present disclosure third aspect, a kind of block chain node is additionally provided, is applied in block chain network, institute
Stating block chain node includes:
Processor；
Memory for storage processor executable instruction；
Wherein, the processor is configured to:
Determine the block for executing rights management；
According to the intelligent contract stored in determined block, defining the competence manages object and is to the operation behavior of block chain
It is no legal；
When operation behavior of the rights management object to block chain is confirmed as legal, allow the rights management object pair
Block chain executes the operation behavior.
According to embodiment of the present disclosure fourth aspect, a kind of computer readable storage medium is provided, is stored thereon with calculating
Machine program instruction, when which is executed by processor the step of the realization above method.
Through the above technical solutions, a kind of operating right management method that the disclosure provides, executes permission pipe by determining
The block of reason；Then according to the intelligent contract stored in determined block, define the competence the operation for managing object to block chain
Whether behavior is legal；Finally when operation behavior of the rights management object to block chain is confirmed as legal, allow the permission
It manages object and the operation behavior is executed to block chain, from the leakage problem that may be not present to the Crypted password of data, while
Malicious node attack is avoided, the safety of data is improved.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram of implementation environment shown according to an exemplary embodiment；
Fig. 2 is a kind of flow chart of operating right management method shown according to an exemplary embodiment；
Fig. 3 is a kind of specific flow chart of operating right management method shown according to an exemplary embodiment；
Fig. 4 is a kind of specific flow chart of operating right management method shown according to an exemplary embodiment；
Fig. 5 is a kind of flow chart of operating right management method shown according to an exemplary embodiment；
Fig. 6 is a kind of block diagram of the operating right managing device shown according to another exemplary embodiment；
Fig. 7 is the specific block diagram of the block determining module in Fig. 6；
Fig. 8 is a kind of block diagram of block chain node shown according to an exemplary embodiment.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
Block chain is the decentralization distributed data base system for participating in maintenance jointly by nodes all in block chain network,
It is by a series of data chunks generated based on cryptography method at each data block is a block in block chain.
According to the sequencing of generation time, block is linked together in an orderly manner, forms a data chain, is visually known as area
Block chain.Block chain is generated by its special block and transaction, indentification protocol can not forge with that can not change, is completely traceable
Security feature.
The related notion explanation being related in block chain technology:
Block chain node: block chain network is based on P2P (Peer to Peer, peer-to-peer network) network, each participates in business
With the node that block storage, verifying, the P2P network node forwarded are all in a block chain network.
The write-in of block chain data: block chain node to block chain network publication " transaction " (Transaction) by realizing
Data are written to block chain.Use oneself private key to the signature of transaction comprising user in transaction, to prove the identity of user.Transaction
The new block of generation is recorded by " miner " (the block chain node for executing block chain common recognition competition mechanism), is then published to block
Chain network, and after being passed through and received by other block chain node verifications, transaction data is written into block chain.
Intelligent contract: technically, intelligent contract is considered as network server, and only server is not to make
It is set up on the internet, but is erected on block chain with IP address, so as to run specific contract program above it.
But unlike network server, intelligent contract does not depend on some specific hardware device, in fact, the generation of intelligent contract
Code is executed by all equipment for participating in digging mine.
Intelligent contract is the assembler language being programmed on block chain, such as similar with Solidity or Javascript
Specific language pre-establishes intelligent contract when creating block chain.These bytecodes provide finger to the functionality of block chain really
Draw, therefore code can be easy to interact with it, such as transfer pin currency and record event.
The characteristic that block chain has:
Decentralization: entire block catenary system does not have the hardware of centralization or management organization, the power between arbitrary node
Benefit and obligation are all impartial, and the damage of any node or lose the running that can not all influence whole system.It therefore can also
To think that block chain has fabulous robustness.
It goes trustization: participating in carrying out data exchange between each node in entire block catenary system being without trusting each other
, the operation regulation of whole system is that open and clear, all data content is also rule that are disclosed, therefore specifying in system
It is that can not cannot also cheat other nodes then within the scope of scope and time, between node.
Based on block chain technology, the embodiment of the present disclosure provides a kind of operating right management method, and this method can be applied
Block chain node in block chain network 101 as shown in Figure 1.As shown in Figure 2, which comprises
S11: the block for executing rights management is determined.
Wherein, managing entitlement includes rights management range: for example, the transaction of the legitimacy of newly generated block, block is held
Capable legitimacy, node ID can Content of communciation legitimacy etc..The object of rights management: e.g., including the producer of block
Whether the both sides or multi-party participant that whether legal, transaction executes are legal, whether intelligent contract account is legal etc..Rights management
Authentication mode: for example, P2P connection or communication when certification, when generating block certification, trade execute when certification, certainly
The contract of definition authenticates.The level of rights management: for example, the rules of competence, authority content.
It is that iteration may occur at any time to update for the block in block chain node, and it is existing in block
It can also happen that update, therefore, it is necessary to find in current block chain node newest state after iteration for the content of intelligent contract
Block is as the block for executing rights management.
S12: according to the intelligent contract stored in determined block, define the competence the operation row for managing object to block chain
It whether legal is；If it is, executing S13.
, by the writable wound generation block of intelligent contract, only generation can also be being created in the case where block chain is in original state
The address that the code of intelligence contract is specified in block, can also be can be written into outside block chain by address lookup intelligence contract
Configuration in and by configuration distributing to it is all participate in common recognition block chain nodes.
Wherein, rights management object can be with to the operation behavior of block chain are as follows: for example, A miner newly generates in block chain
One block, newly one block chain node of addition modify to the content of the intelligent contract stored in block chain node etc..
Define the competence manage object to the operation behavior of block chain whether polymerization process can be with are as follows: for example, when arranging in intelligent contract
The account for not including A miner in the account of new block is generated, therefore, if being that A miner exists to the operation behavior of block chain node
A block is newly generated in block chain, it is determined that the operation behavior is illegal.For another example agreement allows to add in intelligent contract
The id information for entering block chain node includes the id information of B block chain node, when the operation behavior to block chain is B block chain node
When issuing addition request to block chain, it is determined that the operation behavior is legal.
S13: the rights management object is allowed to execute the operation behavior to block chain.
A kind of operating right management method that the disclosure provides executes the block of rights management by determining；Then basis
The intelligent contract stored in determined block, whether defining the competence, it is legal to the operation behavior of block chain to manage object；Finally
When operation behavior of the rights management object to block chain is confirmed as legal, the rights management object is allowed to hold block chain
The row operation behavior from the leakage problem that may be not present to the Crypted password of data, while also avoiding malicious node attack,
Improve the safety of data.
Optionally, the block chain node include the first block sequence, the first block sequence include wound generation block and
By multiple blocks in different order after wound generation block iteration.First block constructed earliest claims in block chain node
And include two ID numbers for the block of subsequent foundation to create generation block, one be the block itself ID number, the other is preceding
The ID number of sequence block.
As shown in figure 3, S11 includes:
S111: judging whether to receive the second block sequence comprising multiple blocks of another block chain node transmission,
If it is, S112 is executed, if it is not, then executing S114.
S112: according to the ID for the block that iteration earliest in the second block sequence goes out, from the first block sequence
Inquire the preamble block for the block that earliest iteration goes out in the second block sequence.
Wherein, in the first block sequence, the number of blocks of iteration is less than the second block sequence after the preamble block
(normally, block chain node only receives number of blocks greater than the number of blocks of iteration after preamble block to number of blocks in column
Second block sequence).
S113: the preamble block is determined as to execute the block of rights management.
S12 is specially whether to receive the second block sequence according to the intelligent contract verifying stored in the preamble block
It is legal.
For example, the first block sequence includes A1 block, A2 block, A3 block, the area A4 according to the sequencing that block creates
Block, A5 block, the second block sequence include B1 block, B2 block, B3 block according to the sequencing of block creation, wherein the
The block that the two earliest iteration of block sequence go out is B1 block, and preamble block of the B1 block in the first block sequence is A3 block,
In the first block sequence, the quantity of the block of iteration is 2, in the second block sequence, the iteration after A3 after A3 block
The quantity of block be 3, therefore, the calculation power of the second block sequence is stronger, can by the second block sequence the latest iteration go out area
The state of block needs to verify whether the second block sequence is legal, and therefore, it is necessary in advance by the area A3 as current world outlook
Whether block is legal (for example, whether the ID of verifying B1 block closes as the second block sequence of block verifying for executing rights management
Method).
S114: the block that iteration goes out the latest in the first block sequence is determined as the area for executing rights management
Block.
Optionally, as shown in figure 4, the method also includes:
S14: the block that iteration goes out the latest in the second block sequence is determined as the block for executing rights management.
It, can be by the block of iteration out is true the latest in the second block sequence when the second block sequence is verified legal
It is set to the block for executing rights management, is then return to the operation of S12.It is stored with recently more in the block that iteration goes out the latest
Therefore new intelligent contract more meets requirement of the current time to rights management.
Therefore the intelligent contract being stored in the block that iteration goes out the latest most into update more meets current time to permission
The requirement of management.
Optionally, as shown in figure 5, the intelligence contract is including having permission, imparting is regular and authority content, S12 include:
Assign rule and authority content according to the permission, define the competence manage object to the operation behavior of block chain whether
It is legal.
Assuming that the object of rights management is only the producer of block, i.e. permission assigns rule how to assign the production of some block
The digging mineral rights of survivor's account limits.It is " ring label " that the permission of initialization, which assigns rule, and the authority content of initialization is the generation of B block
Person's account, which is endowed, digs mineral rights limit.
It prescribes a time limit when needing to assign A block producer digging mineral rights, it can be by the area of A block, B block, C block on block chain
Block producer's account carry out the confirmation of ring label (i.e. A block, B block, C block block producer's account reach common understanding) give birth to afterwards
Effect, authority content is endowed at this time for producer's account of A block and B block digs mineral rights limit.
When it is " ballot " that permission, which assigns rule, the authority content of initialization has for B digs mineral rights limit.
Prescribe a time limit when assigning A and digging mineral rights, and block producer's account of A, B, C on block chain vote after confirm after it is raw
It imitates (i.e. the two of them of block producer's account of A block, B block, C block are reached common understanding), authority content is A and B at this time
Producer's account, which is endowed, digs mineral rights limit.
Fig. 6 is a kind of block diagram of operating right managing device 600 shown according to an exemplary embodiment, the device application
Block chain node in block chain network, for implementing in above method embodiment.It should be noted that the embodiment of the present invention
The technical effect of provided operating right managing device 600, basic principle and generation is identical with above-described embodiment, is brief
Description, the present embodiment part do not refer to place, can refer to corresponding contents in the above embodiments.As shown in fig. 6, the device is at least
Including block determining module 601, legal determining module 602, operation behavior execution module 603.
Block determining module 601 is configured to determine the block for executing rights management.
Legal determining module 602 is configured to according to the intelligent contract stored in determined block, and define the competence management
Whether object is legal to the operation behavior of block chain.
Operation behavior execution module 603 is configured to be confirmed as closing to the operation behavior of block chain when rights management object
When method, the rights management object is allowed to execute the operation behavior to block chain.
A kind of operating right managing device 600 that the disclosure provides is held when executing above-mentioned functional module by determination
The block of row rights management；Then it according to the intelligent contract stored in determined block, defines the competence and manages object to block
Whether the operation behavior of chain is legal；Finally when operation behavior of the rights management object to block chain is confirmed as legal, allow
The rights management object executes the operation behavior to block chain, asks from may be not present the leakage of the Crypted password of data
Topic, while malicious node attack is also avoided, improve the safety of data.
Optionally, as shown in fig. 7, as one of specific embodiment, the block chain node includes the first block
Sequence, the first block sequence include wound generation block and by multiple blocks in different order after wound generation block iteration,
Block determining module 601 includes:
Submodule 701 is inquired, is configured to when the comprising multiple blocks that receive the transmission of another block chain node
When two block sequences, according to the ID for the block that iteration earliest in the second block sequence goes out, from the first block sequence
Inquire the preamble block for the block that earliest iteration goes out in the second block sequence, wherein in the first block sequence, institute
The number of blocks of iteration after preamble block is stated less than the number of blocks in the second block sequence.
Block determines submodule 702, is configured to for the preamble block being determined as to execute the block of rights management.
The legal determining module 602 is specifically configured to be connect according to the intelligent contract verifying stored in the preamble block
Whether legal receive the second block sequence.
Optionally, the block determining module 601 be further configured to by the second block sequence the latest iteration go out
Block is determined as the block for executing rights management.
Optionally, the block chain node include the first block sequence, the first block sequence include wound generation block and
By multiple blocks in different order after wound generation block iteration, the block determining module 601 is further configured to not connect
Receive another block chain node transmission the second block sequence comprising multiple blocks when, by the first block sequence most
The block that late iteration goes out is determined as the block for executing rights management.
Specifically, the intelligent contract includes having permission imparting rule and authority content,
Legal determining module 602 is configured to assign rule and authority content according to the permission, and define the competence management pair
As whether the operation behavior to block chain is legal.
About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method
Embodiment in be described in detail, no detailed explanation will be given here.
Fig. 8 is a kind of block diagram of block chain node 800 shown according to an exemplary embodiment.For example, block chain node
800 may be provided as a server.Referring to Fig. 8, block chain node 800 includes processor 822, quantity can for one or
Multiple and memory 832, for storing the computer program that can be executed by processor 822.The meter stored in memory 832
Calculation machine program may include it is one or more each correspond to one group of instruction module.In addition, processor 822 can be with
It is configured as executing the computer program, to execute above-mentioned operating right management method.For example, processor 822 can execute
Determine the block for executing rights management；According to the intelligent contract stored in determined block, defines the competence and manage object to area
Whether the operation behavior of block chain is legal；When operation behavior of the rights management object to block chain is confirmed as legal, allow institute
It states rights management object and the operation behavior is executed to block chain.
In addition, block chain node 800 can also include power supply module 826 and communication component 850, which can
To be configured as executing the power management of block chain node 800, which, which can be configured as, realizes block chain node
800 communication, for example, wired or wireless communication.In addition, the block chain node 800 can also include that input/output (I/O) connects
Mouth 858.Block chain node 800 can be operated based on the operating system for being stored in memory 832, such as Windows
ServerTM, Mac OS XTM, UnixTM, LinuxTM etc..
In a further exemplary embodiment, a kind of computer readable storage medium including program instruction is additionally provided, it should
The step of above-mentioned operating right management method is realized when program instruction is executed by processor.For example, the computer-readable storage
Medium can be the above-mentioned memory 832 including program instruction, and above procedure instruction can be by the processor of block chain node 800
822 execute to complete above-mentioned operating right management method.
In a further exemplary embodiment, a kind of computer program product is also provided, which includes energy
Enough computer programs executed by programmable device, which has is used for when being executed by the programmable device
Execute the code section of above-mentioned operating right management method.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (10)
1. a kind of operating right management method, which is characterized in that applied to the block chain node in block chain network, the method
Include:
Determine the block for executing rights management；
According to the intelligent contract stored in determined block, defining the competence manages whether object closes the operation behavior of block chain
Method；
When operation behavior of the rights management object to block chain is confirmed as legal, allow the rights management object to block
Chain executes the operation behavior.
2. the method according to claim 1, wherein the block chain node include the first block sequence, it is described
First block sequence includes wound generation block and by multiple blocks in different order after wound generation block iteration, the determination to
Execute rights management block include:
When receiving the second block sequence comprising multiple blocks of another block chain node transmission, according to secondth area
The ID for the block that earliest iteration goes out in block sequence, changes earliest from inquiring in the second block sequence in the first block sequence
The preamble block for the block that generation goes out, wherein in the first block sequence, the number of blocks of iteration is small after the preamble block
Number of blocks in the second block sequence；
The preamble block is determined as to execute the block of rights management；
Described define the competence manages whether object is legal to the operation behavior of block chain to include:
It is whether legal that the second block sequence is received according to the intelligent contract verifying stored in the preamble block.
3. according to the method described in claim 2, it is characterized in that, described when rights management object is to the operation row of block chain
When to be confirmed as legal, after allowing the rights management object to execute the operation behavior to block chain, the method is also
Include:
The block that iteration goes out the latest in the second block sequence is determined as the block for executing rights management.
4. the method according to claim 1, wherein the block chain node include the first block sequence, it is described
First block sequence includes wound generation block and by multiple blocks in different order after wound generation block iteration, the determination to
Execute rights management block include:
When not receiving the second block sequence comprising multiple blocks of another block chain node transmission, by firstth area
The block that iteration goes out the latest in block sequence is determined as the block for executing rights management.
5. the method according to claim 1, wherein the intelligence contract includes having permission imparting rule and permission
Content, it is described according to the intelligent contract stored in determined block, it defines the competence and manages object to the operation behavior of block chain
Whether legal include:
Rule and authority content are assigned according to the permission, defining the competence manages whether object closes the operation behavior of block chain
Method.
6. a kind of operation behavior rights management device, which is characterized in that described applied to the block chain node in block chain network
Device includes:
Block determining module is configured to determine the block for executing rights management；
Legal determining module is configured to define the competence according to the intelligent contract stored in determined block and manage object pair
Whether the operation behavior of block chain is legal；
Operation behavior execution module is configured to when operation behavior of the rights management object to block chain is confirmed as legal,
The rights management object is allowed to execute the operation behavior to block chain.
7. device according to claim 6, which is characterized in that the block chain node includes the first block sequence, described
First block sequence includes wound generation block and by multiple blocks in different order after wound generation block iteration, and the block is true
Cover half block includes:
Submodule is inquired, is configured to when the second block sequence comprising multiple blocks for receiving the transmission of another block chain node
When column, according to the ID for the block that iteration earliest in the second block sequence goes out, from the first block sequence described in inquiry
The preamble block for the block that earliest iteration goes out in second block sequence, wherein in the first block sequence, the preamble area
The number of blocks of iteration is less than the number of blocks in the second block sequence after block；
Block determines submodule, is configured to for the preamble block being determined as to execute the block of rights management；
The legal determining module is specifically configured to according to the intelligent contract verifying reception stored in the preamble block
Whether the second block sequence is legal.
8. device according to claim 7, which is characterized in that the block determining module is further configured to described second
The block that iteration goes out the latest in block sequence is determined as the block for executing rights management.
9. a kind of block chain node, which is characterized in that be applied in block chain network, the block chain node includes:
Processor；
Memory for storage processor executable instruction；
Wherein, the processor is configured to:
Determine the block for executing rights management；
According to the intelligent contract stored in determined block, defining the competence manages whether object closes the operation behavior of block chain
Method；
When operation behavior of the rights management object to block chain is confirmed as legal, allow the rights management object to block
Chain executes the operation behavior.
10. a kind of computer readable storage medium, is stored thereon with computer program instructions, which is characterized in that the program instruction
The step of any one of Claims 1 to 5 the method is realized when being executed by processor.
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| CN110855777A (en) * | 2019-11-12 | 2020-02-28 | 腾讯科技（深圳）有限公司 | Node management method and device based on block chain |
| CN111291420A (en) * | 2020-01-21 | 2020-06-16 | 国家市场监督管理总局信息中心 | Distributed off-link data storage method based on block chain |
| CN111897795A (en) * | 2020-06-24 | 2020-11-06 | 苏宁金融科技(南京)有限公司 | Management method, device and system of alliance chain |
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