WO2022247069A1

WO2022247069A1 - Blockchain-based mining method and apparatus, and mobile terminal and storage medium

Info

Publication number: WO2022247069A1
Application number: PCT/CN2021/119096
Authority: WO
Inventors: 宋轩; 邹若彤; 张浩然; 庄湛; 云沐晟; 潘泰仰
Original assignee: 南方科技大学
Priority date: 2021-05-27
Filing date: 2021-09-17
Publication date: 2022-12-01
Also published as: CN113364596A

Abstract

Disclosed in the embodiments of the present invention are a blockchain-based mining method and apparatus, and a mobile terminal and a storage medium. The method comprises: acquiring block header information, which is released by a blockchain, of a block to be generated; determining whether close interaction with a target mobile terminal occurs, and if so, acquiring identity information of the target mobile terminal; sending the identity information of the target mobile terminal to a server, and receiving encrypted identity information of the target mobile terminal that is returned by the server; generating physical interaction information according to the encrypted identity information of the target mobile terminal and encrypted identity information of the current mobile terminal itself, and storing the physical interaction information locally; generating a random item according to the locally stored physical interaction information; calculating a Hash value according to the block header information and the random item; and if the Hash value satisfies a block forming condition, generating the block to be generated. By means of the technical solution provided in the embodiments of the present invention, the dependence of mining on a computing power is reduced, computing power resources and electricity resources are saved on, and mining costs are also reduced, thereby improving the enthusiasm of users for participating in mining.

Description

A blockchain-based mining method, device, mobile terminal and storage medium

technical field

Embodiments of the present invention relate to the technical field of blockchain, and in particular, to a blockchain-based mining method, device, mobile terminal, and storage medium.

Background technique

Blockchain is a distributed data storage technology model based on P2P network, consensus mechanism, encryption algorithm and other technologies that is jointly participated and maintained by many network nodes. Its consensus mechanism refers to the consensus reached among all bookkeeping nodes to determine the validity of the blockchain content, which is an important mechanism to ensure the stable operation of the blockchain. Among them, the most commonly used consensus mechanisms are Proof of Work (POW), Proof of Stake (POS), and Delegated Proof of Stake (DPOS). Among them, POW is the most commonly used, and its core design idea is to propose a computational problem with asymmetric characteristics, that is, it is difficult to find the answer to this problem, but it is very easy to verify the answer to this problem. The mining algorithms applicable to the POW consensus mechanism are roughly divided into two categories. The first category is called computational difficulty, and the second category is called memory difficulty. Although the algorithms of these two methods are simple and easy to implement, neither of them produces any real social value, and wastes a lot of computing power and power resources, making it difficult to shorten the block confirmation time. At the same time, due to the close relationship between mining and computing power, with the emergence of mining pools to concentrate computing power, the blockchain system designed based on the original POW consensus mechanism scheme is also vulnerable to computing power attacks and bifurcation attacks of the Bitcoin network .

technical problem

Embodiments of the present invention provide a blockchain-based mining method, device, mobile terminal, and storage medium to solve problems such as waste of computing power and power resources, high computational difficulty, and vulnerability to attacks caused during the mining process.

technical solution

In the first aspect, the embodiment of the present invention provides a blockchain-based mining method, the method comprising:

Obtain the block header information of the block to be generated released by the blockchain;

Judging whether close interaction occurs with the target mobile terminal, if so, obtaining the identity information of the target mobile terminal; sending the identity information of the target mobile terminal to a server, and receiving the target mobile terminal returned by the server encrypted identity information;

generating physical interaction information according to the encrypted identity information of the target mobile terminal and its own encrypted identity information and storing it locally;

generating a random item according to the locally stored physical interaction information;

calculating a hash value according to the block header information and the random item;

If the hash value satisfies the block generation condition, the block to be generated is generated.

In the second aspect, the embodiment of the present invention also provides a blockchain-based mining device, which includes:

The information acquisition module is used to obtain the block header information of the block to be generated released by the block chain;

A close interaction determination module, configured to determine whether close interaction occurs with the target mobile terminal, and if so, obtain the identity information of the target mobile terminal;

An information encryption module, configured to send the identity information of the target mobile terminal to a server, and receive the encrypted identity information of the target mobile terminal returned by the server;

An information generating module, configured to generate physical interaction information according to the encrypted identity information of the target mobile terminal and its own encrypted identity information and store it locally;

A random item generating module, configured to generate a random item according to the locally stored physical interaction information;

a hash value calculation module, configured to calculate a hash value according to the block header information and the random item;

A block generation module, configured to generate the block to be generated if the hash value satisfies the block generation condition.

In the third aspect, the embodiment of the present invention also provides a mobile terminal, the mobile terminal includes:

one or more processors;

memory for storing one or more programs;

When the one or more programs are executed by the one or more processors, the one or more processors implement the blockchain-based mining method provided by any embodiment of the present invention.

In the fourth aspect, the embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the blockchain-based mining method provided by any embodiment of the present invention is implemented. .

Beneficial effect

The embodiment of the present invention provides a blockchain-based mining method. Firstly, the block header information of the block to be generated issued by the blockchain is obtained, and then it is judged whether there is a close interaction between the mobile terminal and the target mobile terminal. , then obtain the identity information of the target mobile terminal, and then send the identity information to the server to receive the corresponding encrypted identity information returned by the server, and then use the encrypted identity information of the target mobile terminal and its own encrypted identity information to generate physical interaction information storage Locally, a random item is generated according to the locally stored physical interaction information, and a hash value is calculated according to the obtained block header information and the generated random item, so as to generate a block to be generated when the hash value meets the block generation condition. The method provided by the embodiment of the present invention uses the random items generated by the close physical interaction information between miners to replace the random items generated at high speed by using a large number of computing resources in the traditional method to carry out blockchain mining, based on the real-world physical interaction Finiteness and confidence to ensure the equality of mining equipment, thereby reducing the dependence of the mining process on computing power, and lowering the threshold for mining, that is, reducing the cost of mining and increasing the enthusiasm of users to participate in mining. At the same time, due to the limited number of physical interactions between users, super computing power nodes are not easy to appear, which makes the computing power dispersed and can effectively prevent attacks. In addition, by encrypting the acquired identity information of the mobile terminal, and using the encrypted information to generate physical interaction information and then generate random items, the private information of the user can be kept confidential, thereby improving the security of user information.

Description of drawings

Fig. 1 is the flowchart of the blockchain-based mining method provided by Embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of a blockchain-based mining device provided in Embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a mobile terminal provided by Embodiment 3 of the present invention.

Embodiments of the present invention

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processing, many of the steps may be performed in parallel, concurrently, or simultaneously. Additionally, the order of steps may be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not included in the figure. The processing may correspond to a method, function, procedure, subroutine, subroutine, or the like.

Embodiment one

FIG. 1 is a flowchart of a blockchain-based mining method provided by Embodiment 1 of the present invention. This embodiment can be applied to the situation where common mobile devices are used for mining through physical interaction, and the method can be executed by the blockchain-based mining device provided by the embodiment of the present invention, which can be implemented by hardware and/or software Generally, it can be integrated into a mobile terminal, which can be, but not limited to, various notebook computers, smart phones, tablet computers, and portable wearable devices. As shown in Figure 1, it specifically includes the following steps:

S11. Obtain the block header information of the block to be generated issued by the block chain.

Among them, the block header information may include block version number, parent block hash value, Merkle tree root hash value, timestamp, difficulty target, etc., and block generation conditions can be determined according to the block header information. Exemplarily, based on the bitcoin-based block generation algorithm, the hash calculation of the block header can be performed through the secure hash algorithm SHA-256, and the block generation condition can be that the calculated 256-bit value is less than the difficulty target in the block header information. In order to control the block generation time at the preset time, that is, the expected average block generation time, the mining difficulty can be adjusted periodically, that is, the required difficulty target can be re-determined. For example, assume that the preset time is expected_time, and every N An adjustment is made after each block, and the adjustment period is about expected_time/1440N days, which can be adjusted by the following formula:

Among them, target represents the new difficulty target, current_target represents the current difficulty target, and actual_time represents the real average block generation time. The difficulty target is regularly adjusted up or down through the above formula, so that the block generation time tends to be stable.

S12. Determine whether close interaction occurs with the target mobile terminal, and if so, acquire identity information of the target mobile terminal. Among them, close interaction can be an interactive state that lasts for a preset duration within a preset distance range. By determining the close interaction in the real world as the only condition to trigger the generation of random items and then calculate the hash value, it can effectively prevent users from falsifying data. During the user's use of the mobile terminal, it may also include some other physical interaction processes. When an interaction occurs, it can first be judged whether the mobile terminal has closely interacted with other mobile terminals. If so, the other mobile terminal As a target mobile terminal, and obtain the identity information of the target mobile terminal, so as to subsequently generate random items. Wherein, the identity information may be information such as a hardware address (Media Access Control Address, MAC) of the mobile terminal that can uniquely determine the identity of the terminal. In this embodiment, the close interaction can be based on the close interaction determined by Bluetooth, then when the mobile terminal participates in the mining process, it can scan other devices through Bluetooth, and collect the MAC address of the other party when the close interaction occurs .

Optionally, judging whether close interaction occurs with the target mobile terminal includes: obtaining the Bluetooth strength and motion state of the target mobile terminal; and judging whether close interaction occurs with the target mobile terminal according to the Bluetooth strength and motion state. Specifically, signals such as Bluetooth strength and motion status of the target mobile terminal can be used to judge whether close interaction occurs, and further, its own motion state can be added for comparison to improve the accuracy of close interaction determination. Wherein, the motion state may be the acceleration of the mobile terminal and the like. After obtaining the Bluetooth strength of the target mobile terminal, the measurement distance between the mobile terminal and the target mobile terminal can be calculated according to the following formula:

Among them, d represents the measurement distance, RSSI represents the Bluetooth strength, abs() represents the absolute value, a represents the signal strength at a distance of one meter, and n represents the environmental attenuation factor. After the corresponding measurement distance is calculated, it can be compared with the preset distance range of the close interaction to judge the close interaction.

Further optionally, judging whether a close interaction occurs with the target mobile terminal according to the Bluetooth strength and motion state includes: inputting the Bluetooth strength and motion state into the trained deep learning model to obtain a predicted close interaction probability, and according to the close interaction The interaction probability judges whether close interaction occurs with the target mobile terminal. Specifically, because the accuracy of the calculation method for measuring the distance is not high enough, and the value of a will change due to different models of mobile terminals, and at the same time, Bluetooth will be subject to various interferences and obstacles in different environments, so that the selection of n Values can become very inaccurate. Therefore, this embodiment can further propose a method for predicting the close interaction probability, which can be implemented specifically by using a trained deep learning model. The deep learning model can be a deep neural network (Deep Neural Networks, DNN), etc. The input can be the Bluetooth strength and motion status signals collected by the mobile terminal of the mining user through Bluetooth broadcasting, and the output is the close interaction probability. Through the trained deep learning model to analyze and judge the various signals collected from other mobile terminals, a probability value can be obtained, so that the current mobile terminal and the target mobile terminal can be more accurately analyzed according to this probability value Possibility of close interaction between them.

Optionally, before obtaining the identity information of the target mobile terminal, it also includes: if it is determined that there is a close interaction with the target mobile terminal, then obtaining the side channel data of the target mobile terminal; combining the side channel data of the target mobile terminal with its own The side channel data is sent to the server, and the validity result of the close interaction determined and obtained according to the side channel data of the target mobile terminal and its own side channel data returned by the server is received.

Among them, the side channel data refers to the interaction data of other channels generated when there is close interaction with the target mobile terminal. These data can be stored in the storage space of the mobile terminal, and specifically can include GPS data and WiFi data, etc., side channel data It can enhance the probability of a real event happening and being recognized. Then, when it is determined by any of the above methods that close interaction has occurred between the mobile terminal and the target mobile terminal, the side channel data of the target mobile terminal can be obtained and stored locally, and at the same time, its own side channel data can be collected to map the side channel data of the target mobile terminal. The channel data and its own side channel data are sent to the server, and the confidence algorithm in the server is used to judge whether the two parties in the close interaction actually interact, that is, to determine whether the current close interaction is an effective close interaction, thereby improving the credibility and fairness of the mining process sex. After the server completes the judgment, it can return the validity result of the corresponding close interaction to the mobile terminal, so that the mobile terminal can determine whether to trigger subsequent events according to the validity result, specifically, only when the validity result is valid , obtain the identity information of the target mobile terminal, and then generate physical interaction information and generate random numbers, etc., if the validity result is invalid, it is not considered that there is close interaction between the mobile terminal and the target mobile terminal, and the subsequent mining process.

S13. Send the identity information of the target mobile terminal to the server, and receive the encrypted identity information of the target mobile terminal returned by the server.

Specifically, after the identity information of the target mobile terminal is obtained, the identity information of the target mobile terminal can be sent to the server to encrypt the identity information, thereby protecting the user's private information. Specifically, an encryption method such as AES can be used to encrypt Identity information is encrypted. A relational database including identity information and encrypted identity information can be maintained on the server side, so that the mobile terminal can use the obtained identity information of the target mobile terminal to obtain a unique encrypted identity information. After the mobile terminal obtains the encrypted identity information of the target mobile terminal, it can be stored locally, and the user of the mobile terminal is restricted from viewing the identity information of other mining users locally. At the same time, the mobile terminal can send its own identity information to the server before participating in mining, so as to obtain its own encrypted identity information and store it locally for future use. In addition, the server may not record or store private information such as the number of close contacts, close contact locations, and close contact objects of the user, so as to protect the privacy of the user.

S14. Generate physical interaction information according to the encrypted identity information of the target mobile terminal and its own encrypted identity information, and store it locally.

Specifically, the mobile terminal can generate a new physical interaction information and store it locally after each acquisition of the encrypted identity information of the target mobile terminal, that is, all the physical interaction information generated after starting to participate in mining can be stored locally. Further, The amount of stored physical interaction information can be limited. Specifically, the earlier physical interaction information can be deleted in the order of generation time. The generation time of the stored physical interaction information can also be limited. Specifically, the physical interaction information before the preset time range can be deleted. Information is removed so that recent physical interaction information can be used later to generate random items.

S15. Generate a random item according to the locally stored physical interaction information.

Specifically, the mobile terminal can generate random items according to locally stored physical interaction information, different physical interaction information can be randomly arranged, and the generated random items can form a block header together with previously obtained block header information.

S16. Calculate the hash value according to the block header information and random items.

Specifically, after each random item is generated, the hash value of the reconstructed block header can be calculated through the secure hash algorithm SHA-256.

S17. If the hash value satisfies the block generation condition, generate a block to be generated.

Specifically, the block generation condition can be that the 256-bit value generated by the calculation determined above is smaller than the difficulty target in the block header information. After the hash value is calculated, it can be judged whether the hash value satisfies the block production condition, and if so, the block to be generated is generated. If not, you can change the order of physical interaction information to regenerate random items, and calculate the hash value again to determine whether it can meet the block production conditions until a miner successfully completes the block production. Among them, the block includes a block header and a block body, and the block body mainly contains transaction information. Optionally, the transaction information is stored in a Merkle tree, so that nodes can verify the packaged transaction data.

On the basis of the above technical solution, optionally, after generating the block to be generated if the hash value satisfies the block generation condition, it also includes: confirming that the block to be generated has completed block generation according to the preset block generation confirmation mechanism; Random items are used to settle block rewards. Specifically, in the blockchain, new transactions will be broadcast to all nodes, and each node will collect new transactions into a block. When a node solves the block problem according to the generated random items, then Generate the block to be generated and broadcast the block to be generated to all nodes. All nodes accept the block to be generated only when all transactions in the block to be generated are verified by hash and there are no invalid transactions such as double-spending transactions. Generate a block and indicate acceptance of the block to be generated by creating the next block in the blockchain, and can also use the hash of the block as part of the new random entry to confirm the block to be generated Complete the block. After the block to be generated is confirmed, the block reward of the block to be generated can be settled, and the block reward is the reward that can be obtained by successfully solving the problem of block generation.

Further optionally, settlement of block rewards is based on random items, including: distributing block rewards to block miners and other miners participating in the generation of random items according to the preset distribution ratio; The contribution of the number of close interactions in the process is redistributed to the block rewards distributed by other miners.

Specifically, 50% of the block reward can be allocated to the block miners, and the other 50% can be allocated to other miners participating in the generation of random items, and can be based on other miners in the process of generating random items The contribution of the number of close interactions is redistributed to the 50% of the block rewards allocated by other miners, and can be distributed according to the following distribution formula:

Among them, r represents the reward that some other miner can get, t represents the number of close interactions contributed by the other miner in the process of generating random items, T represents the total number of close interactions used to generate random items, that is, the physical interaction information used The amount of , R represents the block reward distributed by all other miners.

Further optionally, the method also includes: creating a volunteer user, and the volunteer user enables the authority to obtain the number of real-time close interactions; randomly select at least one sample from the volunteer users as a benchmark volunteer user; set the benchmark volunteer user's real-time The median of the number of close interactions is determined as the benchmark number of interactions; correspondingly, the settlement of block rewards is based on random items, including: settlement of block rewards based on random items and benchmark interactions; in accordance with the preset block confirmation mechanism After confirming that the block to be generated is completed, it also includes: settlement of the sharing rewards of the benchmark volunteer users according to the real-time close interaction times and the benchmark interaction times of each benchmark volunteer user, and the sharing reward changes linearly with the block reward.

Specifically, a volunteer user can be an attribute obtained by an ordinary user applying for sharing rewards from the server, and is a user of the same level as an ordinary user. After receiving an application from an ordinary user, a corresponding volunteer user can be created for the ordinary user. During the period as a volunteer user, you need to agree to enable the permission to be recorded and obtain the number of real-time close interactions, and be subject to the authenticity (whether it is forged) and reliability (whether it can represent the actual frequency of close interactions of the group) of the number of real-time close interactions verification. At the same time, volunteer users can cancel their sharing permissions at any time and actively change to ordinary users. At this time, the number of real-time close interactions will no longer be recorded. If the number of real-time close interactions of a volunteer user exceeds the preset maximum number of interactions, it exceeds the acceptable normal level, and it is judged as an unqualified sharing. At this time, the information provided by the volunteer will be unreliable. Therefore, you can Change the volunteer user to an ordinary user, and ignore volunteer applications within a preset time range (such as one month), so as to avoid using the volunteer user as a standard in the near future. Among them, the preset maximum number of interactions can be determined by the 3σ confidence interval range of the daily contact times of all volunteers selected in the same period of the previous day. In particular, when the data is large enough, the daily contact times of all volunteer users will conform to the normal distributed.

At the beginning of each block generation, a certain sample can be randomly selected from volunteer users as a benchmark volunteer user. By re-random selection before each block is produced, some users can be prevented from being used as benchmark volunteer users for a long time, making the standard used each time more authentic and reliable. After determining the benchmark volunteer users, the median of the real-time close interactions of all benchmark volunteer users can be determined as the benchmark interaction times, which is used for adjustment of subsequent block rewards. The determined benchmark interaction times can be recorded in In the block header information. Correspondingly, the amount of block rewards is related to the distribution of the close interaction times of all users on that day. The number of incentive interactions can be set according to the determined benchmark interaction times to adjust the block rewards. Specifically, the following formula can be applied:

P=M×K

Among them, P represents the number of incentive interactions, M represents the number of benchmark interactions, and K represents the adjustment factor, and 1<K<2. The specific value of the adjustment factor can be determined by the user scale and the number of daily close interactions of users. The average daily close interaction of all users on that day The closer the number of interactions is to the number of incentive interactions, the higher the block reward. The initial block reward can be an ideal reward value, and the ideal reward value will be halved every time a certain block is generated, and the current block reward should not be higher than the ideal reward value. Correspondingly, after successfully completing the block generation, the volunteer users selected as the benchmark can obtain a certain sharing reward, which can change linearly with the actual block generation reward and is shared by all benchmark volunteer users. Specifically, the sharing reward can be settled according to the following formula:

Among them, A represents the proximity value, L represents the number of real-time close interactions provided by a benchmark volunteer user, M represents the number of benchmark interactions, s represents the sharing reward that the benchmark volunteer user can get, and A _sum represents the sum of all benchmark volunteer users Close to the sum of values, S represents the total sharing reward. That is, when the number of real-time close interactions of the benchmark volunteer user is closer to the benchmark number of interactions, the more sharing rewards can be obtained. By setting up volunteer users and randomly selecting benchmark volunteer users before each block, the median of the real-time close interaction times of benchmark volunteer users is determined as the benchmark interaction times, and then set according to the benchmark interaction times Different mining reward mechanisms allow higher rewards for the number of close interactions in line with the current social state, effectively preventing malicious mining through frequent interactions between miners.

Optionally, packaging rewards can also be set, that is, when the blocks are successfully distributed and the block rewards are distributed, certain rewards can be obtained according to the total amount of transactions packaged by the user. Similar to the Gas mechanism of the Ethereum system, the user's transactions The probability of being verified and packaged faster can be obtained by increasing the paid Gas value, and part of the Gas is used as a packaging reward.

The method provided in this embodiment has the characteristics of light weight because the physical interaction technology can only be applied to mobile devices, and the computing power of mobile devices is relatively small and the amount of packaged transaction data in each block is small. The popularity of mobile devices is high and the threshold for use is low, which can attract more users to participate in mining in daily life and increase the scale of users, thereby realizing the dispersion of computing power and enhancing system security. Based on the lightweight characteristics of this method, it is suitable for blockchain-Internet of Things technology, and supports mobile devices for large-scale users of the Internet of Things. The distributed computing power of large-scale users, as well as the limitation and confidence of physical interaction can prevent malicious attacks and bring system security, so that it can have more and wider applications in smart cities and smart medical care.

The technical solution provided by the embodiment of the present invention first obtains the block header information of the block to be generated released by the block chain, and then judges whether close interaction occurs between the mobile terminal and the target mobile terminal, and if so, obtains the target mobile terminal Then send the identity information to the server to receive the corresponding encrypted identity information returned by the server, and then use the encrypted identity information of the target mobile terminal and its own encrypted identity information to generate physical interaction information and store it locally, so that according to the local storage The physical interaction information generates random items, and calculates the hash value according to the obtained block header information and the generated random items, so as to generate the block to be generated when the hash value meets the block generation conditions. By using the random items generated by the close physical interaction information between the miners to replace the random items generated at high speed by using a large number of computing resources in the traditional method to carry out blockchain mining, the mining is guaranteed based on the limitation and confidence of the physical interaction in the real world The equipment is equal, thereby reducing the dependence of the mining process on computing power, and lowering the mining threshold, that is, reducing the cost of mining and increasing the enthusiasm of users to participate in mining. At the same time, due to the limited number of physical interactions between users, super computing power nodes are not easy to appear, which makes the computing power dispersed and can effectively prevent attacks. In addition, by encrypting the acquired identity information of the mobile terminal, and using the encrypted information to generate physical interaction information and then generate random items, the private information of the user can be kept confidential, thereby improving the security of user information.

Embodiment two

Fig. 2 is a schematic structural diagram of a block chain-based mining device provided by Embodiment 2 of the present invention. The device can be implemented by hardware and/or software, and generally can be integrated into a mobile terminal to execute any of the present invention. In the blockchain-based mining method provided in the embodiment, the mobile terminal can be, but not limited to, various notebook computers, smart phones, tablet computers, and portable wearable devices. As shown in Figure 2, the device includes:

The information acquisition module 21 is used to acquire the block header information of the blocks to be generated issued by the block chain;

The close interaction judgment module 22 is used to judge whether there is a close interaction with the target mobile terminal, if so, obtain the identity information of the target mobile terminal;

The information encryption module 23 is used for sending the identity information of the target mobile terminal to the server, and receiving the encrypted identity information of the target mobile terminal returned by the server;

The information generation module 24 is used to generate physical interaction information according to the encrypted identity information of the target mobile terminal and its own encrypted identity information and store it locally;

A random item generating module 25, configured to generate random items according to locally stored physical interaction information;

Hash value calculation module 26, for calculating the hash value according to block header information and random items;

The block generating module 27 is configured to generate a block to be generated if the hash value satisfies the block generation condition.

On the basis of the above technical solution, optionally, the close interaction determination module 22 includes:

A data acquisition unit, configured to acquire the Bluetooth strength and motion status of the target mobile terminal;

The close interaction determination unit is configured to determine whether close interaction occurs with the target mobile terminal according to the Bluetooth strength and motion state.

On the basis of the above technical solution, optionally, the close interaction determination unit is specifically used for:

Input the Bluetooth strength and motion state into the trained deep learning model to obtain the predicted close interaction probability, and judge whether close interaction occurs with the target mobile terminal according to the close interaction probability.

On the basis of the above technical solution, optionally, the blockchain-based mining device also includes:

The side channel data acquisition module is used to acquire the side channel data of the target mobile terminal if it is determined that there is close interaction with the target mobile terminal before acquiring the identity information of the target mobile terminal;

The close connection validity determination module is used to send the side channel data of the target mobile terminal and its own side channel data to the server, and receive the close interaction determined by the side channel data of the target mobile terminal and its own side channel data returned by the server effectiveness results.

The block confirmation module is used to confirm that the block to be generated is completed according to the preset block confirmation mechanism after the block to be generated is generated if the hash value satisfies the block generation condition;

The block reward settlement module is used to settle the block reward according to random items.

On the basis of the above technical solutions, the optional block reward settlement module includes:

A block reward allocation unit is used to distribute block rewards to block miners and other miners participating in random item generation according to the preset distribution ratio;

The redistribution unit is used to redistribute the block rewards allocated to other miners according to the contribution of the close interaction times of each miner in the process of generating random items.

Volunteer user creation module, which is used to create volunteer users, and volunteer users have the authority to obtain the number of real-time intimate interactions;

The benchmark volunteer user selection module is used to randomly select at least one sample from the volunteer users as the benchmark volunteer user; the benchmark interaction number determination module is used to determine the median of the real-time close interaction times of the benchmark volunteer users as the benchmark number of interactions;

Correspondingly, the block reward settlement module is specifically used for:

Settle block rewards based on random items and benchmark interactions;

The blockchain-based mining device also includes:

The sharing reward settlement module is used to settle the sharing rewards of the benchmark volunteer users according to the real-time close interaction times and the benchmark interaction times of each benchmark volunteer user after confirming that the block to be generated is completed according to the preset block confirmation mechanism , the sharing reward changes linearly with the block reward.

The blockchain-based mining device provided by the embodiments of the present invention can execute the blockchain-based mining method provided by any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method.

It is worth noting that in the above-mentioned embodiments of the blockchain-based mining device, the included units and modules are only divided according to functional logic, but are not limited to the above-mentioned divisions, as long as the corresponding functions can be realized In addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present invention.

Embodiment Three

Fig. 3 is a schematic structural diagram of a mobile terminal provided by Embodiment 3 of the present invention, showing a block diagram of an exemplary mobile terminal suitable for implementing the embodiments of the present invention. The mobile terminal shown in FIG. 3 is only an example, and should not limit the functions and scope of use of this embodiment of the present invention. As shown in Figure 3, the mobile terminal includes a processor 31, a memory 32, an input device 33, and an output device 34; the number of processors 31 in the mobile terminal can be one or more, and one processor 31 is taken as an example in Figure 3 , the processor 31, the memory 32, the input device 33 and the output device 34 in the mobile terminal may be connected through a bus or in other ways. In FIG. 3, connection through a bus is taken as an example.

The memory 32, as a computer-readable storage medium, can be used to store software programs, computer-executable programs and modules, such as program instructions/modules corresponding to the blockchain-based mining method in the embodiment of the present invention (for example, based on the block chain Information acquisition module 21, close interaction determination module 22, information encryption module 23, information generation module 24, random item generation module 25, hash value calculation module 26 and block generation module 27) in the block chain mining device. The processor 31 executes various functional applications and data processing of the mobile terminal by running the software programs, instructions and modules stored in the memory 32, that is, realizes the aforementioned blockchain-based mining method.

The memory 32 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required by a function; the data storage area may store data created according to the use of the mobile terminal, and the like. In addition, the memory 32 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices. In some examples, the memory 32 may further include a memory that is set remotely relative to the processor 31, and these remote memories may be connected to the mobile terminal through a network.

Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The input device 33 can be used to obtain the block header information of the blocks to be generated issued by the block chain, and to generate key signal inputs related to user settings and function control of the mobile terminal. The output device 34 can be used for broadcasting the generated blocks and so on.

Embodiment Four

Embodiment 4 of the present invention also provides a storage medium containing computer-executable instructions, the computer-executable instructions are used to execute a blockchain-based mining method when executed by a computer processor, the method comprising:

Judging whether there is a close interaction with the target mobile terminal, if so, obtaining the identity information of the target mobile terminal;

Sending the identity information of the target mobile terminal to the server, and receiving the encrypted identity information of the target mobile terminal returned by the server;

Generate physical interaction information according to the encrypted identity information of the target mobile terminal and its own encrypted identity information and store it locally; generate random items according to the locally stored physical interaction information;

Calculate hash value based on block header information and random items;

If the hash value satisfies the block generation conditions, a block to be generated is generated.

The storage medium may be any of various types of memory devices or storage devices. The term "storage medium" is intended to include: installation media such as CD-ROMs, floppy disks, or tape drives; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc. ; non-volatile memory, such as flash memory, magnetic media (eg hard disk or optical storage); registers or other similar types of memory elements, etc. The storage medium may also include other types of memory or combinations thereof. Also, the storage medium may be located in a computer system in which the program is executed, or may be located in a different second computer system connected to the computer system through a network such as the Internet. The second computer system may provide program instructions to the computer for execution. The term "storage medium" may include two or more storage media that may reside in different locations, such as in different computer systems connected by a network. The storage medium may store program instructions (eg embodied as computer programs) executable by one or more processors.

Of course, a storage medium containing computer-executable instructions provided by an embodiment of the present invention, the computer-executable instructions are not limited to the method operations described above, and can also execute the blockchain-based blockchain provided by any embodiment of the present invention. Related operations in the mining method.

A computer readable signal medium may include a data signal carrying computer readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. .

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Through the above description about the implementation, those skilled in the art can clearly understand that the present invention can be realized by means of software and necessary general-purpose hardware, and of course can also be realized by hardware, but in many cases the former is a better embodiment . Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a floppy disk of a computer , read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), flash memory (FLASH), hard disk or optical disc, etc., including several instructions to make a computer device (which can be a personal computer) , server, or network device, etc.) execute the methods described in various embodiments of the present invention.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims

A blockchain-based mining method, characterized in that it comprises:

Obtain the block header information of the block to be generated released by the blockchain;

Judging whether close interaction occurs with the target mobile terminal, if so, obtaining the identity information of the target mobile terminal;

sending the identity information of the target mobile terminal to a server, and receiving the encrypted identity information of the target mobile terminal returned by the server;

generating physical interaction information according to the encrypted identity information of the target mobile terminal and its own encrypted identity information and storing it locally;

generating a random item according to the locally stored physical interaction information;

calculating a hash value according to the block header information and the random item;

If the hash value satisfies the block generation condition, the block to be generated is generated.
The blockchain-based mining method according to claim 1, wherein said judging whether close interaction occurs with the target mobile terminal includes:

Obtain the Bluetooth strength and motion status of the target mobile terminal;

Judging whether close interaction occurs with the target mobile terminal according to the Bluetooth strength and the motion state.
The blockchain-based mining method according to claim 2, wherein the judging whether close interaction occurs with the target mobile terminal according to the Bluetooth strength and the motion state includes:

Input the bluetooth strength and the motion state into the trained deep learning model to obtain the predicted close interaction probability, and judge whether close interaction occurs with the target mobile terminal according to the close interaction probability.
The blockchain-based mining method according to claim 1, wherein, before said acquiring the identity information of said target mobile terminal, further comprising:

If it is determined that a close interaction with the target mobile terminal occurs, acquiring side channel data of the target mobile terminal;

Sending the side channel data of the target mobile terminal and its own side channel data to the server, and receiving the close interaction returned by the server and determined according to the side channel data of the target mobile terminal and its own side channel data effectiveness results.
The mining method based on block chain according to claim 1, wherein, after said if said hash value satisfies the condition of producing a block, after generating said block to be generated, further comprising:

Confirm that the block to be generated is completed according to the preset block confirmation mechanism;

The block reward is settled according to the random item.
The blockchain-based mining method according to claim 5, wherein said settlement of block rewards according to said random items includes:

According to the preset distribution ratio, the block rewards are distributed to the block miners and other miners participating in the generation of the random items;

The block generation rewards allocated to the other miners are redistributed according to the contribution of the number of close interactions of each of the other miners in the process of generating the random item.
The blockchain-based mining method according to claim 5, wherein the method further comprises:

Create a volunteer user, and the volunteer user opens the authority to obtain the number of real-time close interactions;

Randomly select at least one sample from the volunteer users as a benchmark volunteer user; determine the median of the number of real-time close interactions of the benchmark volunteer users as the benchmark interaction number;

Correspondingly, the settlement of the block reward according to the random item includes:

Settle the block generation reward according to the random item and the reference number of interactions;

After confirming that the block to be generated is completed according to the preset block confirmation mechanism, it also includes:

The sharing rewards of the benchmark volunteer users are settled according to the real-time close interaction times of each benchmark volunteer user and the benchmark interaction times, and the sharing rewards vary linearly with the block generation rewards.
A blockchain-based mining device, characterized in that it comprises:

The information acquisition module is used to obtain the block header information of the block to be generated released by the block chain;

A close interaction determination module, configured to determine whether close interaction occurs with the target mobile terminal, and if so, obtain the identity information of the target mobile terminal;

An information encryption module, configured to send the identity information of the target mobile terminal to a server, and receive the encrypted identity information of the target mobile terminal returned by the server;

An information generating module, configured to generate physical interaction information according to the encrypted identity information of the target mobile terminal and its own encrypted identity information and store it locally;

A random item generating module, configured to generate a random item according to the locally stored physical interaction information;

a hash value calculation module, configured to calculate a hash value according to the block header information and the random item;

A block generating module, configured to generate the block to be generated if the hash value satisfies the block-out condition.
A mobile terminal, characterized in that it comprises:

one or more processors;

memory for storing one or more programs;

When the one or more programs are executed by the one or more processors, the one or more processors implement the blockchain-based mining method according to any one of claims 1-7.
A computer-readable storage medium on which a computer program is stored, wherein when the program is executed by a processor, the blockchain-based mining method according to any one of claims 1-7 is implemented.