WO2021042788A1

WO2021042788A1 - Blockchain-based domain name query system and method

Info

Publication number: WO2021042788A1
Application number: PCT/CN2020/094212
Authority: WO
Inventors: 白杰
Original assignee: 南京瑞祥信息技术有限公司
Priority date: 2019-09-06
Filing date: 2020-06-03
Publication date: 2021-03-11
Also published as: CN112468603A; FR3100633A1; CN112468603B

Abstract

The present application provides a blockchain-based domain name query system and method. The system comprises a public chain and a sub-chain consisting of some nodes in the public chain. Nodes in the public chain are configured with a root domain name smart contract. Nodes in the sub-chain are configured to: generate a sub-domain name smart contract by executing the root domain name smart contract, and obtain the ownership of the sub-domain name smart contract by means of competition; obtain a domain name to be queried, and determine a first domain name smart contract corresponding to said domain name; and if the nodes are configured with the first domain name smart contract, invoke the first domain name smart contract to query address information of said domain name. Compared with the prior art in which different levels of domain names are managed by a fixed server, the domain name query system provided by the present application has higher flexibility, is less vulnerable to attacks, improves the stability of the whole system, and can thus improve the network security of all parties participating in and providing network services.

Description

Domain name query system and method based on blockchain

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201910842305.X, and the invention title is "a blockchain-based domain name query system and method" on September 6, 2019, and its entire contents Incorporated in this application by reference.

Technical field

This application relates to the field of blockchain technology, in particular to a domain name query system and method based on blockchain.

Background technique

A domain name is the name of a computer or group of computers on the Internet consisting of a string of names separated by dots, used to identify the geographic location of the computer during data transmission. Domain names can be divided into different levels, including root domain names, top-level domain names, and application domain names. Among them, the root domain name is the highest-level domain name node. For example, the domain name "." is the root domain name; the top-level domain name includes the national top-level domain name and the international top-level domain name. For example, the domain name ".com." is the top-level domain name; the application domain name refers to the top-level domain name. The domain name under the domain name, for example, ".abc.com." or "www.abc.com." in the domain name is the application domain name.

Domain name query is a necessary step in the process of domain name resolution. At present, domain name system (DNS) system is usually used for domain name resolution, but the DNS system is a multi-level and highly dependent between different levels. The system, once a certain level fails or receives an attack, it will lead to the risk of the entire system crashing.

Based on this, there is an urgent need for a blockchain-based domain name query system to solve the problem that once a certain level fails or is attacked in the existing DNS system, it is easy to cause the entire system to collapse.

Summary of the invention

This application provides a blockchain-based domain name query system and method, which can be used to solve the technical problem of the existing DNS system that once a certain level fails or is attacked, it is easy to cause the entire system to collapse.

In the first aspect, an embodiment of the present application provides a domain name query system based on a blockchain. The system includes a public chain composed of multiple nodes and a sub-chain composed of some nodes in the public chain; The nodes in the chain are configured with a root domain name smart contract; the nodes in the sub-chain are configured to: generate a sub-domain smart contract by executing the root domain name smart contract, and obtain the ownership of the sub-domain smart contract in a competitive manner;

The node in the sub-chain is further configured to: obtain the domain name to be queried, determine the first domain name smart contract corresponding to the domain name to be queried; if it is configured with the first domain name smart contract, call the first domain name smart contract. The contract queries the address information of the domain name to be queried.

Optionally, the node in the sub-chain is further configured to: if it is not configured with the first domain name smart contract, determine the second domain name smart contract that manages the domain name to be queried; if it is configured with the first domain name smart contract; 2. Domain name smart contract, calling the second domain name smart contract to query the first node that owns the ownership of the first domain name smart contract; sending a domain name query request to the first node, the domain name query request including the domain name to be queried ；

The first node is configured to call the first domain name smart contract to query the address information of the domain name to be queried, and to return the address information of the domain name to be queried to the nodes in the sub-chain.

Optionally, the node in the sub-chain is further configured to: if the second domain name smart contract is not a root domain name smart contract, and the second domain name smart contract is not configured in itself, call the root domain name smart contract to query ownership The second node of the ownership of the second domain name smart contract; sending a contract invocation request to the second node, where the contract invocation request includes the second domain name smart contract;

The second node is configured to: invoke the second domain name smart contract to query the first node that owns the ownership of the first domain name smart contract, and return the first node to the node in the sub-chain;

The node in the sub-chain is further configured to send a domain name query request to the first node, where the domain name query request includes the domain name to be queried;

Optionally, the subdomain name smart contract includes a top-level domain name smart contract and an application domain name smart contract.

Optionally, the root domain name smart contract is used to manage top-level domain names, the top-level domain name smart contract is used to manage second-level domain names, and the application domain name smart contract is used to manage third-level domain names and above.

Optionally, the nodes in the sub-chain are further configured to generate a top-level domain name smart contract by executing the root domain name smart contract, and/or to generate an application domain name smart contract by executing the top-level domain name smart contract.

Optionally, the node in the sub-chain is further configured to: if the address information of the domain name to be queried is not queried by invoking the first domain name smart contract, the domain name query fails.

Optionally, the node in the sub-chain is further configured to obtain the domain name to be queried sent by the initiating node or the neighboring node corresponding to the node in the sub-chain.

In the second aspect, the embodiments of the present application provide a domain name query method based on blockchain. The method is applied to the above-mentioned system. The system includes a public chain composed of multiple nodes, and A sub-chain composed of some nodes in the chain; among them, the nodes in the public chain are configured with root domain name smart contracts; the nodes in the sub-chain are configured to: generate sub-domain smart contracts by executing the root domain name smart contracts, and use competitive Way to obtain the ownership of the subdomain name smart contract; the method includes:

The node in the sub-chain obtains the domain name to be queried;

The node in the sub-chain determines the first domain name smart contract corresponding to the domain name to be queried;

If it is configured with the first domain name smart contract, the node in the sub-chain invokes the first domain name smart contract to query the address information of the domain name to be queried.

Optionally, the method further includes:

If the node in the sub-chain invokes the first domain name smart contract and does not query the address information of the domain name to be queried, the domain name query fails.

Optionally, the method further includes:

If the first domain name smart contract is not configured by itself, the node in the sub-chain determines the second domain name smart contract that manages the domain name to be queried;

If it is configured with the second domain name smart contract, the node in the sub-chain invokes the second domain name smart contract to query the first node that owns the first domain name smart contract;

The node in the sub-chain sends a domain name query request to the first node, where the domain name query request includes the domain name to be queried;

The first node invokes the first domain name smart contract to query the address information of the domain name to be queried, and returns the address information of the domain name to be queried to the nodes in the sub-chain.

Optionally, the method further includes:

If the second domain name smart contract is not the root domain name smart contract, and the second domain name smart contract is not configured in itself, the nodes in the sub-chain call the root domain name smart contract to query the ownership of the second domain name smart contract Second node

The node in the sub-chain sends a contract invocation request to the second node, and the contract invocation request includes the second domain name smart contract;

The second node uses the second domain name smart contract to query the first node that owns the ownership of the first domain name smart contract, and returns the first node to the node in the sub-chain;

Optionally, obtaining the domain name to be queried by a node in the sub-chain includes:

The node in the sub-chain obtains the domain name to be queried sent by the initiating node or the neighboring node corresponding to the node in the sub-chain.

The embodiment of the present application also provides a device, which has the function of realizing the blockchain-based domain name query method described above. This function can be implemented by hardware executing corresponding software. In a possible design, the device includes: a processor, a transceiver, and a memory; the memory is used to store computer-executed instructions, and the transceiver is used to implement communication between the device and other devices. The entity communicates, the processor and the memory are connected through the bus, and when the device is running, the processor executes the computer execution instructions stored in the memory, so that the device executes the blockchain-based domain name described above Query method.

The embodiment of the present invention also provides a computer storage medium, and the storage medium stores a software program. When the software program is read and executed by one or more processors, it realizes the above-mentioned various possible implementations based on the Domain name query method of blockchain.

The embodiment of the present invention also provides a computer program product containing instructions, which when running on a computer, causes the computer to execute the blockchain-based domain name query method described in the various possible implementation manners.

It can be seen from the above technical solutions that this application provides a blockchain-based domain name query system, including: a public chain composed of multiple nodes, and a sub-chain composed of some nodes in the public chain. Among them, all nodes in the public chain are configured with root domain name smart contracts; nodes in the sub-chain are configured to: generate sub-domain name smart contracts by executing the root domain name smart contract, and obtain the sub-domain name by means of competition Ownership of the smart contract; and, obtain the domain name to be queried, and determine the first domain name smart contract corresponding to the domain name to be queried; if it is equipped with the first domain name smart contract, call the first domain name smart contract to query the address information of the domain name to be queried. This application deploys the DNS system in the blockchain network in the form of a sub-chain, which can realize a complete decentralized deployment. Compared with the existing DNS system, in the domain name query system provided by this application, different levels of domain names are managed by different smart contracts, and the ownership of smart contracts is obtained by nodes in the sub-chain through competition. Compared with the existing technology where a fixed server manages different levels of domain names, this method is more flexible, less vulnerable to attacks, and improves the stability of the entire system, thereby increasing the parties involved in and providing network services. Network security.

Description of the drawings

Figure 1 is a schematic structural diagram of a blockchain-based domain name query system to which an embodiment of the application is applicable;

2 is a schematic diagram of a domain name query process of a domain name query system provided by an embodiment of the application;

FIG. 3 is a schematic diagram of a domain name query process of another domain name query system provided by an embodiment of the application;

FIG. 4 is a schematic diagram of the process of performing domain name query by another domain name query system provided by an embodiment of this application;

FIG. 5 is a schematic diagram of a domain name query process of a top-level domain name provided by an embodiment of the application;

FIG. 6 is a schematic diagram of a domain name query process of a second-level domain name provided by an embodiment of the application;

FIG. 7 is a schematic flowchart of a method for querying domain names based on blockchain provided by an embodiment of the application.

detailed description

In the technical solution provided by this application, the blockchain network refers to a point-to-point network with a decentralized application architecture, and the blockchain network can perform distributed storage, public consensus, digital encryption, transaction accounting, and verification. That is, the blockchain network is a trading platform that covers distributed technology, cryptography, P2P network architecture, and various consensus algorithms that may be applied.

In this application, blockchain or blockchain data refers to the accounting information generated according to the transaction information when a transaction occurs in the blockchain network, that is, multiple transactions form one block of data, and multiple block data form one Blockchain with timestamp. The blockchain network includes nodes that establish a peer-to-peer network connection with each other. Each node is equipped with a corresponding consensus mechanism, such as a smart contract, and has sufficient computing power to perform transaction verification and accounting procedures. The node also has an interface specification that conforms to a certain unified standard to realize access to more nodes or other types of blockchain networks through the interface specification. The public chain is a point-to-point network structure composed of multiple nodes in the blockchain network, and each node has a distributed storage function and transaction and accounting functions; the nodes on the public chain provide a unified interface specification to the outside.

The following first introduces a possible system architecture to which the embodiment of the present application is applicable in conjunction with FIG. 1.

Please refer to FIG. 1, which exemplarily shows a structural diagram of a blockchain-based domain name query system to which an embodiment of the present application is applicable. The system may include: a public chain composed of multiple nodes, and a sub-chain composed of some nodes in the public chain. Obviously, in this embodiment, nodes in the public chain can also serve as sub-chain nodes at the same time. Since the nodes in the sub-chain are composed of some nodes in the public chain, they are both nodes in the sub-chain and nodes in the public chain. That is, the nodes constituting the sub-chain have the same smart contracts and functions as the nodes of the public chain.

In practical applications, public chains can provide basic blockchain services in the network, such as transactions, verification, and storage. The public chain itself may not have specific functions corresponding to any field, but as a bridge, bringing all the sub-chains (or third-party blockchain networks) connected to the public chain into the same blockchain network, so that Different access chains can exchange transactions or transfer information with each other.

In the technical solution provided by this application, all nodes in the public chain are equipped with root domain name smart contracts. Smart contract is a consensus mechanism program agreed on based on blockchain transactions, and various functions of transaction operations can be realized through smart contracts. In this embodiment of the application, through the root domain name smart contract, the node can complete the domain name query and registration service by executing the root domain name smart contract.

The nodes in the sub-chain can be configured to generate sub-domain smart contracts by executing the root domain smart contract, and obtain the ownership of the sub-domain smart contracts in a competitive manner. Among them, after a certain sub-chain node obtains the ownership of the sub-domain smart contract, the sub-chain node can be the owner of the sub-domain smart contract, that is, the sub-chain node is configured with the sub-domain smart contract.

Since the nodes that make up the sub-chain have the same smart contract as the nodes of the public chain, the nodes in the sub-chain can directly execute the root domain name smart contract, thereby generating the sub-domain name smart contract. Among them, the subdomain smart contract includes top-level domain smart contract, application domain smart contract and domain name system (Blockchain Name System, BNS) data.

In the domain name system, domain names can be divided into root domain names, top-level domain names, and application domain names. Further, application domain names can be divided into second-level domain names, third-level domain names, and fourth-level domain names. A complete domain name consists of two or more parts, each part is separated by an English period ".", the last "." is called the root domain name; the right part of the last "." is called It is a top-level domain name (Top Level Domain, TLD), also known as a first-level domain name. It contains a legal string and a domain name suffix; the left part of the top-level domain name from the left part of the string to the next "." is called the second-level domain name (Second). Level Domain, SLD); the left part of the second-level domain name is called the third-level domain name, and so on, each level of domain name controls the distribution of its next-level domain name.

In the embodiments of this application, different smart contracts are provided for domain names of different levels. The root domain name can correspond to the root domain name smart contract. The root domain name smart contract can be used to manage and maintain top-level domain names and generate top-level domain smart contracts; the top-level domain names can correspond to the top-level domain smart contracts, and the top-level domain smart contracts can be used to manage and maintain application domain names. (Such as managing second-level domain names), and generating application domain name smart contracts; application domain names can correspond to application domain name smart contracts, and application domain name smart contracts can be used to manage and maintain BNS data; BNS data can include information about third-level domain names and the fourth level Information about the domain name, etc.

Further, the nodes in the sub-chain can be specifically configured to generate a top-level domain name smart contract by executing a root domain name smart contract.

Alternatively, the nodes in the sub-chain can also be specifically configured to generate application domain name smart contracts by executing top-level domain smart contracts.

Based on the system architecture shown in FIG. 1 and the content described above, the following describes the situation of domain name query in detail.

FIG. 2 exemplarily shows a schematic diagram of a domain name query process performed by a domain name query system provided in an embodiment of the present application.

As shown in Figure 2, the node in the sub-chain (node 1 shown in Figure 2) can be further configured to: obtain the domain name to be queried, determine the first domain name smart contract corresponding to the domain name to be queried; if it is configured with the first domain name The domain name smart contract calls the first domain name smart contract to query the address information of the domain name to be queried.

Further, if the first domain name smart contract is invoked without querying the address information of the domain name to be queried, the domain name query fails.

It can be seen from the above technical solutions that this application provides a blockchain-based domain name query system, including: a public chain composed of multiple nodes, and a sub-chain composed of some nodes in the public chain. Among them, all nodes in the public chain are configured with root domain name smart contracts; nodes in the sub-chain are configured to: generate sub-domain name smart contracts by executing the root domain name smart contract, and obtain the sub-domain name by means of competition Ownership of the smart contract; and, obtain the domain name to be queried, and determine the first domain name smart contract corresponding to the domain name to be queried; if it is configured with the first domain name smart contract, call the first domain name smart contract to query the address information of the domain name to be queried. This application deploys the DNS system in the blockchain network in the form of a sub-chain, which can realize a complete decentralized deployment. Compared with the existing DNS system, in the domain name query system provided by this application, different levels of domain names are managed by different smart contracts, and the ownership of smart contracts is obtained by nodes in the sub-chain through competition. Compared with the existing technology where a fixed server manages different levels of domain names, this method is more flexible, less vulnerable to attacks, and improves the stability of the entire system, thereby increasing the parties involved in and providing network services. Network security.

According to the content shown in FIG. 2, it can be seen that the transaction request received by the node in the sub-chain (ie, node 1) originates from node 0. Node 0 can be the initiating node of this domain name rubbing transaction, or it can be the neighboring node of the node in the sub-chain (ie, node 1). That is, a node in the sub-chain (node 1 as shown in FIG. 2) may be further configured to obtain the domain name to be queried sent by the initiating node or the neighboring node corresponding to the node in the sub-chain.

According to the actual application environment, the transaction form between the initiating node and the node in the sub-chain is also different. There may be two situations in which nodes in the sub-chain obtain the domain name to be queried sent by the initiating node.

In one situation, if the initiating node can directly conduct transactions or information interaction with nodes in the sub-chain, it can directly send the domain name to be queried to the nodes in the sub-chain through the initiating node. This method is most suitable for transactions in which the initiating node and the nodes in the sub-chain are in the same blockchain network, that is, the initiating node is also a node in the domain name query system.

Another situation is that if the initiating node cannot directly conduct transactions or information interaction with nodes in the sub-chain, the initiating node can broadcast the domain name to be queried. Specifically, it may first broadcast the domain name to be queried to neighboring nodes, and then the neighboring node determines whether to receive the domain name to be queried or continue broadcasting in combination with its own role, until the node in the sub-chain receives the domain name to be queried.

The situation where the node in the sub-chain receives the domain name to be queried sent by the neighboring nodes of the node in the sub-chain may be that the initiating node does not know the location information of the core node and sends the domain name to be queried in the blockchain in the form of broadcast. In this way, With the spread of information, nodes in the sub-chain can receive the domain name to be queried through its neighboring nodes.

It should be noted that the above two situations are only exemplary descriptions. In other possible examples, if the initiating node is a neighboring node of a node in the sub-chain, then the node in the sub-chain can also be regarded as directly receiving The domain name to be queried sent by the initiating node.

Considering that in the embodiment of this application, the nodes in the sub-chain obtain the ownership of the sub-domain name smart contract through competition, that is, when the nodes in the sub-chain obtain the domain name to be queried, they may not The competition obtains the ownership of the first domain name smart contract corresponding to the domain name to be queried, that is, the situation where the first domain name smart contract is not configured for itself. Based on this, FIG. 3 exemplarily shows a flowchart of another domain name query system provided by an embodiment of the present application for domain name query.

As shown in Fig. 3, the node in the sub-chain (node 1 shown in Fig. 3) can be further configured to: obtain the domain name to be queried sent by the initiating node (node 0 as shown in Fig. 3), and determine the domain name to be queried The corresponding first domain name smart contract; if the first domain name smart contract is not configured, the second domain name smart contract that manages the domain name to be queried is determined; if the second domain name smart contract is configured, the second domain name smart contract is called to query the ownership of the first domain name smart contract. The first node of the ownership of a domain name smart contract (node 2 shown in Figure 3); sends a domain name query request to the first node. Among them, the domain name query request includes the domain name to be queried.

Correspondingly, the first node (node 2 shown in FIG. 3) can be configured to call the first domain name smart contract to query the address information of the domain name to be queried, and to return the address information of the domain name to be queried to the nodes in the sub-chain.

Based on the same considerations, in the embodiments of the present application, it may happen that the nodes in the sub-chain do not compete to obtain the ownership of the second domain name smart contract, that is, the second domain name smart contract is not configured for itself. Based on this, FIG. 4 exemplarily shows a flowchart of another domain name query system for domain name query provided by an embodiment of the present application.

As shown in Fig. 4, the node in the sub-chain (node 1 shown in Fig. 4) can be further configured to: obtain the domain name to be queried sent by the initiating node (node 0 as shown in Fig. 4), and determine the domain name to be queried Corresponding to the first domain name smart contract; if the first domain name smart contract is not configured, determine the second domain name smart contract that manages the domain name to be queried; if the second domain name smart contract is not a root domain name smart contract, and it is not configured with a second domain name smart contract The domain name smart contract calls the root domain name smart contract to query the second node (node 3 shown in Figure 4) that has the ownership of the second domain name smart contract; and sends a contract call request to the second node. Among them, the contract call request includes the second domain name smart contract.

In the domain name query system provided by the embodiments of this application, the nodes in the public chain are all configured with root domain name smart contracts, and the nodes in the sub-chain are composed of some nodes in the public chain, that is, the nodes in the sub-chain are also All are configured with a root domain name smart contract; therefore, when a node in the child chain determines that it is not configured with a second domain name smart contract, it can directly call the root domain name smart contract.

Correspondingly, the second node (node 3 shown in FIG. 4) can be configured to call the second domain name smart contract to query the first node (node 2 shown in FIG. 4) that owns the ownership of the first domain name smart contract, And return the first node to the node in the child chain.

Furthermore, the node in the sub-chain (node 1 as shown in FIG. 4) may be further configured to send a domain name query request to the first node. Among them, the domain name query request includes the domain name to be queried.

In this way, the first node (node 2 shown in FIG. 4) can be configured to call the first domain name smart contract to query the address information of the domain name to be queried, and to return the address information of the domain name to be queried to the nodes in the sub-chain.

Considering that the domain name to be queried in this application can be a domain name of different levels, correspondingly, the domain name smart contract called is also different. The following examples describe in detail the domain name query process of the domain names to be queried at different levels.

Example 1:

As shown in FIG. 5, it is a schematic diagram of a domain name query process of a top-level domain name provided by an embodiment of this application.

The node in the sub-chain (node 1 as shown in FIG. 5) can be further configured to obtain the top-level domain name to be queried sent by the initiating node (node 0 as shown in FIG. 5), and determine the corresponding top-level domain name to be queried Top-level domain smart contract; if you are equipped with the top-level domain smart contract, call the top-level domain smart contract to query the address information of the top-level domain to be queried; if you do not configure the top-level domain smart contract, call the root domain smart contract to query the ownership The node that owns the top-level domain name smart contract (node 2 as shown in FIG. 5) sends a contract invocation request to the node, and the contract invocation request includes the top-level domain name smart contract.

The node (node 2 shown in Figure 5) that owns the ownership of the top-level domain name smart contract can be configured to: call the top-level domain name smart contract to query the address information of the top-level domain name to be queried, and return the top-level domain name to the node in the sub-chain. The address information of the top-level domain name to be queried.

Example two:

As shown in FIG. 6, a schematic diagram of a domain name query process of a second-level domain name provided in an embodiment of this application.

The node in the sub-chain (node 1 shown in FIG. 6) may be further configured to obtain the second-level domain name to be queried sent by the initiating node (node 0 as shown in FIG. 6), and determine the second-level domain name to be queried The corresponding application domain name smart contract; if the application domain name smart contract is configured, the application domain name smart contract is called to query the address information of the second-level domain name to be queried; if the application domain name smart contract is not configured, the management is determined The smart contract of the top-level domain name of the second-level domain name to be queried. If you are equipped with the top-level domain name smart contract, call the top-level domain name smart contract to query the first node (node 2 shown in Figure 6) that owns the application domain name smart contract, and send a domain name query request to the first node; if you The top-level domain name smart contract is not configured, the root domain name smart contract is called to query the second node (node 3 shown in FIG. 6) that owns the top-level domain name smart contract, and a contract call request is sent to the second node.

The first node (node 2 shown in FIG. 6) can be configured to call the application domain name smart contract to query the address information of the second-level domain name to be queried, and to return the second-level domain name to be queried to the node in the sub-chain The address information of the domain name.

The second node (node 3 shown in FIG. 6) can be configured to: call the top-level domain name smart contract to query the first node that owns the application domain name smart contract, and return the first node to the nodes in the sub-chain .

It should be noted that if the domain name to be queried is a third-level or higher-level domain name, the method shown in FIG. 6 can also be used to implement the domain name query, which will not be described in detail here.

Based on the same inventive concept, the embodiments of the present application also provide a domain name query method based on blockchain. As shown in FIG. 7, it is a schematic diagram of a process corresponding to a blockchain-based domain name query method provided in an embodiment of this application. This method can be applied to the domain name query system described above. The system can include a public chain composed of multiple nodes and a sub-chain composed of some nodes in the public chain; wherein the nodes in the public chain are configured with a root domain name Smart contract; the nodes in the sub-chain are configured to: generate a sub-domain smart contract by executing the root domain smart contract, and obtain the ownership of the sub-domain smart contract in a competitive manner; the method may specifically include the following steps:

Step 101: A node in the sub-chain obtains the domain name to be queried.

Step 102: The node in the sub-chain determines the first domain name smart contract corresponding to the domain name to be queried.

Step 103: If it is configured with the first domain name smart contract, the node in the sub-chain invokes the first domain name smart contract to query the address information of the domain name to be queried.

Further, after step 103, step 104 may be included, that is, the node in the sub-chain may also return the address information of the domain name to be queried to the initiating node.

Using the above method, deploying the DNS system in the blockchain network in the form of a sub-chain can realize a complete decentralized deployment. Compared with the existing DNS system, in the domain name query method provided by this application, different levels of domain names are managed by different smart contracts, and the ownership of smart contracts is obtained by nodes in the sub-chain through competition. Compared with the existing technology where a fixed server manages different levels of domain names, this method is more flexible, less vulnerable to attacks, and improves the stability of the entire system, thereby increasing the parties involved in and providing network services. Network security.

Optionally, the method further includes:

If a node in the sub-chain invokes the first domain name smart contract and does not query the address information of the domain name to be queried, the domain name query fails.

Optionally, the method further includes:

Optionally, obtaining the domain name to be queried by the node in the sub-chain includes:

In an exemplary embodiment, a computer-readable storage medium is also provided, and a computer program or smart contract is stored in the storage medium, and the computer program or smart contract is loaded and executed by a node to implement the above-mentioned embodiments. Transaction processing method. Optionally, the aforementioned computer-readable storage medium may be Read-Only Memory (ROM), Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. .

Those skilled in the art can clearly understand that the technology in the embodiments of the present application can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solutions in the embodiments of the present application can be embodied in the form of software products, which can be stored in a storage medium, such as ROM/RAM. , Magnetic disks, optical disks, etc., including a number of instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments of the present application.

Those skilled in the art will easily think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptive changes of the present disclosure. These variations, uses, or adaptive changes follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field that are not disclosed in the present disclosure. . The description and the embodiments are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are pointed out by the following claims.

It should be understood that the present disclosure is not limited to the precise structure that has been described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

A domain name query system based on blockchain, characterized in that the system includes a public chain composed of multiple nodes, and a sub-chain composed of some nodes in the public chain; wherein the node configuration in the public chain There is a root domain name smart contract; the nodes in the sub-chain are configured to: generate a sub-domain smart contract by executing the root domain name smart contract, and obtain the ownership of the sub-domain smart contract in a competitive manner;

The node in the sub-chain is further configured to: obtain the domain name to be queried, determine the first domain name smart contract corresponding to the domain name to be queried; if it is configured with the first domain name smart contract, call the first domain name smart contract. The contract queries the address information of the domain name to be queried.
The system according to claim 1, wherein the node in the sub-chain is further configured to: if it is not configured with the first domain name smart contract, determine the second domain name smart contract that manages the domain name to be queried Contract; if it is equipped with the second domain name smart contract, call the second domain name smart contract to query the first node that owns the first domain name smart contract; send a domain name query request to the first node, the The domain name query request includes the domain name to be queried;

The first node is configured to call the first domain name smart contract to query the address information of the domain name to be queried, and to return the address information of the domain name to be queried to the nodes in the sub-chain.
The system according to claim 2, wherein the node in the sub-chain is further configured to: if the second domain name smart contract is not a root domain name smart contract, and the second domain name smart contract is not configured with the second domain name smart contract itself Contract, call the root domain name smart contract to query the second node that owns the second domain name smart contract; send a contract call request to the second node, the contract call request includes the second domain name smart contract;

The second node is configured to: invoke the second domain name smart contract to query the first node that owns the ownership of the first domain name smart contract, and return the first node to the node in the sub-chain;

The node in the sub-chain is further configured to send a domain name query request to the first node, where the domain name query request includes the domain name to be queried;

The first node is configured to call the first domain name smart contract to query the address information of the domain name to be queried, and to return the address information of the domain name to be queried to the nodes in the sub-chain.
The system according to claim 1, wherein the subdomain name smart contract includes a top-level domain name smart contract and an application domain name smart contract.
The system according to claim 4, wherein the root domain name smart contract is used to manage top-level domain names, the top-level domain name smart contract is used to manage second-level domain names, and the application domain name smart contract is used to manage third-level domain names. Domain names above the third level.
The system according to claim 4, wherein the nodes in the sub-chain are further configured to generate a top-level domain name smart contract by executing the root domain name smart contract, and/or, by executing the top-level domain name smart contract Smart contracts generate smart contracts for application domain names.
The system according to claim 1, wherein the nodes in the sub-chain are further configured to: if the first domain name smart contract is invoked without querying the address information of the domain name to be queried, the domain name query fails.
The system according to any one of claims 1 to 7, wherein the node in the sub-chain is further configured to: obtain the to-be-query sent by the initiating node or the neighboring node corresponding to the node in the sub-chain domain name.
A domain name query method based on blockchain, characterized in that the method is applied to the system according to any one of claims 1 to 8, and the system includes a public chain composed of multiple nodes, and A sub-chain composed of some nodes in the public chain; wherein the nodes in the public chain are configured with a root domain name smart contract; the nodes in the sub-chain are configured to generate a sub-domain smart contract by executing the root domain name smart contract, and Obtain the ownership of the subdomain name smart contract by means of competition; the method includes:

The node in the sub-chain obtains the domain name to be queried;

The node in the sub-chain determines the first domain name smart contract corresponding to the domain name to be queried;

If it is configured with the first domain name smart contract, the node in the sub-chain invokes the first domain name smart contract to query the address information of the domain name to be queried.
The method according to claim 9, wherein the method further comprises:

If a node in the sub-chain invokes the first domain name smart contract and does not query the address information of the domain name to be queried, the domain name query fails.