WO2020073521A1 - Blockchain-based automobile data sharing method and apparatus, device, and storage medium - Google Patents

Abstract

A blockchain-based automobile data sharing method and apparatus, a device and a storage medium, which belong to the technical field of automobile trading. Said method comprises: a main engine plant node acquiring automobile information and a unique identifier corresponding to the automobile information, so as to generate an automobile details block, and uploading same in a blockchain system so as to form a new blockchain, the main engine plant node broadcasting the uploaded automobile details block to other nodes, and after receiving the broadcast, the other nodes recording the unique identifier, the automobile information and a hash value; and a dealer node acquiring maintenance information, so as to generate a maintenance block, and uploading to the blockchain and broadcasting same. By means of the decentralization features of the blockchain, an automobile's information sharing system from production to sale, etc. is established, realizing participation of multiple parties in various links and achieving the purpose of jointly maintaining automobile data of the blockchain, providing reliable automobile data for estimation of used cars.

Description

Car data sharing method, device, equipment and storage medium based on blockchain

This application requires the priority of the Chinese patent application submitted to the China Patent Office on October 11, 2018, with the application number 201811182819.9 and the invention titled "Blockchain-based car data sharing method, device, equipment and storage medium". The entire contents are incorporated in this application by reference.

Technical field

This application relates to the field of automobile transaction technology, and in particular to a blockchain-based automobile data sharing method, device, equipment, and storage medium.

Background technique

In the used car trading market, the valuation of used cars is crucial. The general process of second-hand car valuation is usually for second-hand car dealers to pick up the car, inspect the car, and evaluate the pre-sale price. When evaluating the pre-sale price of used cars, comprehensively evaluate the pre-sale price according to the following indicators:

1. Credible indicators: brand, model, time of listing, appearance and interior wear;

2. Unreliable indicators: mileage, whether it is overhauled, whether it is a major accident, whether auto parts are replaced, and daily use.

Among them, for untrusted indicators, second-hand car dealers cannot obtain accurate data, but other parts of the automotive industry chain, such as OEMs and insurance companies, have some data. Even first-hand dealers do not have a complete car after-sales process, and there must be multiple links to provide services together. Due to the fact that car value-related data and information are scattered throughout the industry, used car dealers are unable to evaluate accurate data on all aspects of mobile phones.

Summary of the invention

In view of this, it is necessary to provide a method, device, computer equipment, and storage medium for car data sharing based on the blockchain to address the problem of low valuation accuracy caused by the lack of reliable data in the automotive industry when used car valuation.

A car data sharing method based on blockchain includes the following steps:

The host plant node obtains the car information and the unique identifier corresponding to the car information, generates the car detail block from the unique identifier and the car information, and then links the car detail block in the blockchain system to form a new Blockchain, the host factory node records the unique identifier, the car information and the hash value in the car details block on the chain in a preset on-chain list;

The host factory node broadcasts the on-chain car detail block to other nodes in the blockchain system, and after receiving the broadcast, the other node broadcasts the unique identifier corresponding to the car detail block , The car information and the hash value are recorded in the on-chain list corresponding to its own node;

The dealer node obtains maintenance information, and the maintenance information contains a unique identifier. The dealer node generates the maintenance information into a maintenance block, and the maintenance block is chained in the blockchain system and passed The chain structure of the blockchain system links the maintenance block to the hash value corresponding to the unique identifier to form a new blockchain, and the dealer node also records the maintenance information To the listed list corresponding to the unique identifier in its own node;

The dealer node broadcasts the maintenance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the maintenance information corresponding to the maintenance block to In the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the maintenance block to the on-chain list in the own node corresponding to the unique identifier.

A car data sharing device based on blockchain includes the following modules:

The car information on-chain module is set as a host factory node to obtain car information and a unique identifier corresponding to the car information, generate a car detail block from the unique identifier and the car information, and place the car detail block in the block The chain in the chain system forms a new blockchain, and the host plant node records the unique identifier, the car information and the hash value in the car detail block on the chain on the preset In the chain list;

A broadcasting and recording module is set up so that the host plant node broadcasts the on-chain car detail block to other nodes in the blockchain system, and after receiving the broadcast, the other node sends the car detail area The unique identifier, the car information and the hash value corresponding to the block are recorded in the on-chain list corresponding to the own node;

The maintenance information on-chain module is set as a dealer node to obtain maintenance information, the maintenance information contains a unique identifier, the dealer node generates the maintenance information into a maintenance block, and places the maintenance block in the block On the chain system, and through the chain structure of the blockchain system, link the maintenance block to the hash value corresponding to the unique identifier to form a new blockchain, the dealer The node also records the maintenance information to the on-chain list corresponding to the unique identifier in its own node;

The broadcast and update module is set up such that the dealer node broadcasts the maintenance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node corresponds the maintenance block The maintenance information is recorded in the on-chain list corresponding to the unique identifier in the own node, and the hash value corresponding to the maintenance block is updated in the on-chain list corresponding to the unique identifier in the own node.

A computer device includes a memory and a processor. The memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, the processor causes the processor to perform the following steps: a host factory node acquires a car The unique identifier corresponding to the information and the automobile information, generating the automobile detail block from the unique identifier and the automobile information, and uploading the automobile detail block in the blockchain system to form a new blockchain, The host factory node records the unique identifier, the car information and the hash value in the car detail block on the chain in a preset on-chain list;

The host factory node broadcasts the on-chain car detail block to other nodes in the blockchain system, and after receiving the broadcast, the other node broadcasts the unique identifier corresponding to the car detail block , The car information and the hash value are recorded in the on-chain list corresponding to its own node;

The dealer node obtains maintenance information, and the maintenance information contains a unique identifier. The dealer node generates the maintenance information into a maintenance block, and the maintenance block is chained in the blockchain system and passed The chain structure of the blockchain system links the maintenance block to the hash value corresponding to the unique identifier to form a new blockchain, and the dealer node also records the maintenance information To the listed list corresponding to the unique identifier in its own node;

The dealer node broadcasts the maintenance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the maintenance information corresponding to the maintenance block to In the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the maintenance block to the on-chain list in the own node corresponding to the unique identifier.

A storage medium storing computer-readable instructions, when the computer-readable instructions are executed by one or more processors, causes the one or more processors to perform the following steps: a host plant node obtains automobile information and the automobile information Corresponding to the unique identifier, the unique identifier and the car information are used to generate a car detail block, and the car detail block is uploaded in the blockchain system to form a new block chain. The host plant node will The unique identifier, the car information and the hash value in the car detail block on the chain are recorded in a preset on-chain list;

The host factory node broadcasts the on-chain car detail block to other nodes in the blockchain system, and after receiving the broadcast, the other node broadcasts the unique identifier corresponding to the car detail block , The car information and the hash value are recorded in the on-chain list corresponding to its own node;

The dealer node obtains maintenance information, and the maintenance information contains a unique identifier. The dealer node generates the maintenance information into a maintenance block, and the maintenance block is chained in the blockchain system and passed The chain structure of the blockchain system links the maintenance block to the hash value corresponding to the unique identifier to form a new blockchain, and the dealer node also records the maintenance information To the listed list corresponding to the unique identifier in its own node;

The dealer node broadcasts the maintenance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the maintenance information corresponding to the maintenance block to In the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the maintenance block to the on-chain list in the own node corresponding to the unique identifier.

The above-mentioned block chain-based car data sharing method, device, computer equipment, and storage medium include a host factory node to obtain car information and a unique identifier corresponding to the car information, and generate the car detail area from the unique identifier and the car information Block, the vehicle detail block is chained in the blockchain system to form a new blockchain, and the host plant node links the unique identifier, the car in the vehicle detail block that is chained The information and hash value are recorded in a preset on-chain list; the OEM node broadcasts the on-chain car detail block to other nodes in the blockchain system, and the other nodes receive After broadcasting, record the unique identifier, the car information and the hash value corresponding to the car detail block to the on-chain list corresponding to the own node; the dealer node obtains the maintenance information, the maintenance information Contains a unique identifier, the dealer node generates a maintenance block from the maintenance information, uploads the maintenance block in the blockchain system, and passes the blockchain system Of the chain structure, linking the maintenance block to the hash value corresponding to the unique identifier to form a new blockchain, the dealer node also records the maintenance information to its own node Uniquely identifying the listed on the chain; the dealer node broadcasts the maintenance block on the chain to other nodes in the blockchain system. After receiving the broadcast, the other nodes The maintenance information corresponding to the maintenance block is recorded in the on-chain list corresponding to the unique identifier in the own node, and the hash value corresponding to the maintenance block is updated to correspond to the unique identifier in the own node Is on the list. This application introduces a blockchain system. With the help of the decentralized characteristics of the blockchain, a set of information sharing systems for vehicles from production to sales is constructed to achieve the participation of all parties in various links and to jointly maintain the purpose of maintaining automotive data on the blockchain. Provide reliable car data for used car estimates.

BRIEF DESCRIPTION

By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments, and are not considered to limit the present application.

FIG. 1 is a flowchart of a block chain-based car data sharing method in an embodiment;

2 is a flowchart of determining the uniqueness of car information in an embodiment;

3 is a schematic structural diagram of a blockchain system in an embodiment;

FIG. 4 is a structural diagram of a blockchain-based car data sharing device in an embodiment.

detailed description

In order to make the purpose, technical solutions and advantages of the present application more clear, the following describes the present application in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

Those skilled in the art can understand that unless specifically stated, the singular forms "a", "an", "said" and "the" used herein may also include the plural forms. It should be further understood that the word "comprising" used in the specification of this application refers to the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or their groups.

FIG. 1 is a flowchart of a blockchain-based car data sharing method in an embodiment of this application, including the following steps:

Step S1, the car information is on the chain: the OEM node obtains the unique identifier corresponding to the car information and the car information, generates the car details block with the unique identifier and the car information, and links the car details block in the blockchain system to form a new In the blockchain, the host factory node records the unique identifier, car information and hash value in the car details block on the chain in the preset on-chain list.

Blockchain system is a system based on blockchain technology, also known as distributed ledger technology, is an Internet database technology. It is characterized by decentralization, openness and transparency, allowing each user to participate in maintaining database records. Blockchain system mainly includes network layer, consensus layer and data layer. Blockchain system is a new application mode of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, encryption algorithm and so on. Among them, the data layer encapsulates the underlying data blocks and related data encryption and timestamps and other basic data and basic algorithms, and the underlying data blocks are presented in a chain structure, that is, the blockchain is a chronological sequence of data blocks A chained data structure combined in a sequentially connected manner, and a tamper-proof and unforgeable distributed ledger guaranteed by cryptography.

Therefore, the use of blockchain technology in this step can achieve distributed recording and distributed storage of car data. The so-called distributed record is that any computer that records car information in the host factory that produces the car can be set as one of the blockchain systems. Node, this node records car information for the host plant node, generates car detail blocks and uploads them in the blockchain system. The car information is not recorded by a centralized organization. The so-called distributed storage is that data can be stored in all The nodes involved in maintaining data are not stored centrally in the centralized institutional node, that is, there can be multiple OEM nodes in this step, and multiple OEM nodes can store the produced car information in the blockchain system Wind up. All the nodes in the blockchain system are preset in the database with a list of on-chains. The list of on-chains includes the unique identifiers, car information and hash values corresponding to all the blockchains. The unique identifier, car information and hash value corresponding to the car details block of the chain are recorded in the chain list.

In this step, the car information may include at least one item of brand, model, mileage, or number of charging times. The unique identifier can be a car engine number, a vehicle identification number or a frame number. The unique identifier is preferably a vehicle identification number. The vehicle identification number is a group of seventeen alphanumerics. It is a unique set of numbers used on a car that can be identified Information such as the manufacturer of the car, engine, and chassis serial number. The hash value is the hash value of the last block in the chain that is on the chain. In this step, the process of uploading the automobile detail block in the blockchain system is to store the automobile detail block in the data layer of the blockchain system.

Step S2, broadcast and record: the OEM node broadcasts the on-chain car detail block to other nodes in the blockchain system. After receiving the broadcast, the other nodes broadcast the unique identifier, car information and Kazakhstan corresponding to the car detail block The hope value is recorded in the linked list corresponding to its own node.

All nodes in the blockchain system are preset with an on-chain list, and this step achieves the purpose of synchronizing the on-chain lists of each node, that is, the car information is consistent. Therefore, after the node of the host factory completes the chain, it will also broadcast the block on the chain. After receiving the broadcast, the other nodes will synchronously update or record the list on the chain in their respective nodes. The process of recording is the process of adding information to the list on the chain, and the process of updating is the process of replacing the latest information in the list with the chain. After the information synchronization in this step, as long as any node in the blockchain system can view all car information in all blockchain systems, and the car information is the latest information.

Step S3, the maintenance information is uploaded to the chain: the dealer node obtains the maintenance information, and the maintenance information contains a unique identifier. The dealer node generates the maintenance block from the maintenance information, and the maintenance block is uploaded in the blockchain system and passes the block The chain structure of the chain system links the maintenance block to the hash value corresponding to the unique identifier to form a new blockchain. The dealer node also records the maintenance information to the on-chain list corresponding to the unique identifier in its own node. In this step, any computer that records maintenance information in the dealer is set as a node in the blockchain system, and this node is the dealer node. Among them, the maintenance information includes maintenance time and maintenance items. As long as the dealer node obtains the maintenance information once, it will generate a maintenance block and go to the chain.

Step S4, broadcast and update: the dealer node broadcasts the maintenance block on the chain to other nodes in the blockchain system. After receiving the broadcast, the other nodes record the maintenance information corresponding to the maintenance block in their own nodes and unique In the on-chain list corresponding to the identifier, the hash value corresponding to the maintenance block is updated to the on-chain list corresponding to the unique identifier in its own node. Since all the nodes in the blockchain system have preset the list of already-on-chain, not only the nodes of the host factory need to broadcast other nodes, but the dealer nodes also broadcast the maintenance blocks on the blockchain. All nodes of the system realize the purpose of synchronizing car data. In this step, the usual maintenance and repair process of the car is also recorded in the blockchain system through the chain, for all nodes to view, all nodes can understand whether the car is maintained on time, whether it has been overhauled and replaced key components, etc. Unreliable indicators provide accurate data for subsequent used car valuation.

In the traditional car transaction process, various links such as OEMs, dealers, insurance companies, and car management agencies related to car data are scattered throughout the industry, which makes it difficult for subsequent second-hand car pricing. In this embodiment, the vehicle information when the car leaves the factory is uploaded to the blockchain system through the host factory node, and the maintenance information of the vehicle is uploaded through the dealer, and these vehicle data are unique as long as they are in the blockchain system Nodes can view these data. Each participant in the blockchain system has equal status, which ensures the safety and reliability of the uploaded data and cannot be tampered with. It provides reliable and accurate car data for second-hand car estimates.

In one embodiment, in step S1, a unique identifier and car information are used to generate a car detail block, and the car detail block is uploaded in the blockchain system to form a new blockchain, as shown in FIG. 2, It also includes the judging of the uniqueness of the car information by the node of the host factory:

Step S101: Compare the unique identifier: the OEM node compares the unique identifier with all the unique identifiers in the on-chain list. When there is no unique identifier in the on-chain list, the OEM node generates the car from the unique identifier and the car information Detail block, the car detail block is uploaded in the blockchain system, resulting in a blockchain that generates car information. All the unique identifiers recorded in the chained list are the car information that has been chained. In order to ensure the uniqueness of the car information that the node of the host factory will be chained, to avoid the problem of the same car information being chained multiple times, this step The unique identifier obtained by the factory node is compared with all the unique identifiers in the on-chain list to determine whether it is on-chain car information. When there is no unique identifier in the on-chain list, the car information has not been on-chain , The OEM node continues to generate car detail blocks and go to the chain. After the completion of the chain, in order to synchronize and unify the data, the OEM node also records the unique identifier, car information and hash value corresponding to the car details block just chained on the chain list, and broadcasts to achieve synchronization.

Step S102, judging the car information: when the on-chain list contains a unique identifier, continue to judge whether the car information and the car information corresponding to the unique identifier in the on-chain list are the same. chain. When the unique list is included in the list, the car information is considered to be on the chain. At this time, continue to determine whether the car information on the chain is the same as the car information provided by the OEM employees obtained by the OEM node. It means the same car information. In order to avoid repeated chaining, the node of the host factory does not chain the car information.

Step S103, chaining: if different, the OEM node will generate a car detail block with the unique identifier and car information, and the car detail block will be chained in the blockchain system, and through the chain structure of the blockchain system, Link the car detail block to the hash value corresponding to the unique identifier to form a new blockchain, and record the car information corresponding to the car detail block to the on-chain list corresponding to the unique identifier, corresponding to the car detail block The hash value of is updated to the listed list corresponding to the unique identifier. When judging that the car information on the chain is different from the latest car information obtained by the node of the host factory, it is considered that there is a case where the car information is updated before the car leaves the factory. This car information is not repeated on the chain, but the updated information should be connected to the chain. On the blockchain, at this time, the OEM node continues to generate car details blocks and upload the chain. After the completion of the chain, in order to synchronize and unify the data, the OEM node will also record the information of the car that has just been chained, update the hash value, and broadcast to achieve synchronization.

In this embodiment, in order to determine the uniqueness of the car information to be chained, it is compared with the unique identifier and car information in the chained list to ensure the uniqueness of the car information on the chain, so that it can be viewed on any node The latest and only car data to avoid duplication and confusion of car data.

In one embodiment, the insurance company node obtains insurance information, and the insurance information contains a unique identifier, the insurance company node generates insurance blocks from the insurance information, and the insurance blocks are uploaded in the blockchain system, and through the blockchain system The structure of the chain links the insurance block to the hash value corresponding to the unique identifier to form a new blockchain; the insurance company node also records the insurance information corresponding to the insurance block to its own node corresponding to the unique identifier. In the chain list, update the hash value corresponding to the insurance block to the on-chain list corresponding to the unique identifier in its own node; the insurance company node also broadcasts the on-chain insurance block to other nodes in the blockchain system After receiving the broadcast, other nodes record the insurance information corresponding to the insurance block to the on-chain list corresponding to the unique identifier in their own node, and update the hash value corresponding to the insurance block to correspond to the unique identifier in their own node Is on the list.

In this embodiment, any computer that records insurance information in an insurance company is set as a node in the blockchain system, and the node is an insurance company node. Insurance information includes insurance time, claim time and claim details. As long as the insurance company node obtains the insurance information once, it will generate an insurance block once and perform on-chain and broadcast to achieve synchronization of the insurance information. In addition, the participation of insurance companies can use the car data in the blockchain system to provide car owners with financial services, such as providing insurance and loan services to car owners based on their vehicle usage. In this embodiment, the insurance information generated by the insurance company ’s insurance business for the car is shared in the blockchain system. The insurance company can provide information about major accidents related to the car and participate in the common maintenance of the car data. Any participant can understand The unreliable indicator of a certain car, and the data source is reliable and accurate, which brings its important reference value for the subsequent used car evaluation.

In one embodiment, the supervisory node obtains the penalty information, and the penalty information contains a unique identifier, the supervisory node generates the penalty block from the penalty information, and the penalty block is uploaded to the blockchain system and passed through the chain of the blockchain system. Structure, linking the penalty block to the hash value corresponding to the unique identifier to form a new blockchain; the supervisory node also records the penalty information corresponding to the penalty block to its own node on the chained list corresponding to the unique identifier , Update the hash value corresponding to the penalty block to the already-listed list corresponding to the unique identifier in its own node; the penalty node also broadcasts the penalty block on the chain to other nodes in the blockchain system, and other nodes receive After the broadcast, record the penalty information corresponding to the penalty block to the on-chain list corresponding to the unique identifier in its own node, and update the hash value corresponding to the penalty block to the already-on-chain corresponding to the unique identifier in its own node List.

In this embodiment, any computer that records the penalty information in the vehicle management office is set as a node in the blockchain system, and this node is a supervision node. Penalty information includes penalty time and penalty details. As long as the supervising node obtains the penalty information once, it will generate a penalty block and upload and broadcast it to synchronize the penalty information. In this embodiment, the punishment information of the vehicle management agency for the vehicle during the supervision process is shared into the blockchain system. The vehicle management office can provide details of the punishment related to the vehicle, and participate in the joint maintenance of the vehicle data by any participant. Understanding the details of a car ’s historical penalties, and the reliable and accurate data sources, not only bring its important reference value for subsequent used car evaluation, but the participation of the vehicle management office increases the government ’s control of the blockchain system.

In one embodiment, the dealer node obtains the car pre-sale price information, and the car pre-sale price information contains a unique identifier. The dealer node generates the pre-sale price block from the car pre-sale price information, and places the pre-sale price block in the zone. Blockchain system is on the chain, and through the chain structure of the blockchain system, the pre-sale price block is linked to the hash value corresponding to the unique identifier to form a new blockchain; the dealer node will also pre-sale price area The pre-sale price information corresponding to the block is recorded in the on-chain list corresponding to the unique identifier in its own node, and the hash value corresponding to the pre-sale price block is updated to the on-chain list corresponding to the unique identifier in its own node; The dealer node also broadcasts the pre-sale price block on the chain to other nodes in the blockchain system. After receiving the broadcast, the other nodes record the pre-sale price information corresponding to the pre-sale price block to their own nodes and unique In the on-chain list corresponding to the identifier, the hash value corresponding to the pre-sale price block is updated to the on-chain list corresponding to the unique identifier in its own node.

In this embodiment, the dealer node not only generates and broadcasts maintenance information on the maintenance block, but also generates and sells pre-sale price blocks on the car pre-sale price information. The car pre-sale price information includes the pre-sale time and the pre-sale price. As long as the dealer node obtains the price information of the car pre-sale, it will generate a price block of the car pre-sale and conduct the chain and broadcast. The dealer in the dealer node can be a first-hand dealer or a second-hand dealer. Used car dealers can view the car data of each on-chain car according to the on-chain list built into the database, in order to obtain accurate data of each link of the car, combined with the estimation algorithm, and finally calculate the used car price and obtain the used car The car price is more precise. In this embodiment, the car sales price disclosed by the dealer node is uploaded to the blockchain system for all nodes to view, so as to achieve the purpose of making the car sales price public and transparent.

In one embodiment, the dealer node generates the pre-sale price block from the pre-sale price information of the car. Before the pre-sale price block is uploaded to the blockchain system, the dealer node also includes the unique identifier and the Compare all the unique identifiers in the chain list. When the unique identifiers are included in the on-chain list, determine whether the pre-sale price information of the car corresponds to the unique identifier in the on-chain list. Whether the pre-sale price is the same, if it is the same, the dealer node does not upload the car pre-sale price information, if it is different, the dealer node generates the pre-sale price block from the car pre-sale price information, and the pre-sale price block On the blockchain in the blockchain system. This embodiment is used for judging whether the pre-sale price information of the car is duplicated. When judging, the pre-sale price of the last chain in the already-listed list is compared to avoid repeating the chain when the pre-sale price does not float. Further avoid the complexity of data in the blockchain system.

In one embodiment, the dealer node obtains the actual price information of the car after the completion of the car sale. The actual price information of the car contains a unique identifier. The dealer node generates the actual price block of the actual price information of the car and places the actual price block in the area. Blockchain system is chained, and through the chain structure of the blockchain system, the actual price block is linked to the hash value corresponding to the unique identifier to form a new blockchain; the dealer node also corresponds the actual price block The actual price information is recorded in the on-chain list corresponding to the unique identifier in its own node, and the hash value corresponding to the actual price block is updated to the on-chain list in its own node corresponding to the unique identifier; the dealer node also Broadcast the actual price block of the chain to other nodes in the blockchain system. After receiving the broadcast, the other nodes record the actual price information corresponding to the actual price block to their own nodes on the chained list corresponding to the unique identifier In, update the hash value corresponding to the actual price block to the on-chain list corresponding to the unique identifier in its own node.

In this embodiment, the dealer node not only generates the car pre-sale price information and then broadcasts the car pre-sale price block, but also generates the actual price block on the chain and broadcasts the actual price information after the car is completed. The information includes sales time and sales price, and may also include seller information and buyer information. This embodiment provides more transparent and open car data for subsequent car sales.

In one embodiment, as shown in FIG. 3, there are four nodes in the blockchain system, which are the host factory node 1, the dealer node 2, the insurance company node 3, and the supervision node 4. The four nodes are preset with a list on the chain. The list on the chain can be as shown in Table 1 below:

Uniquely identifies Vehicle identification number 1 Hash XXXX Car information Brand, model, mileage, charging times Car pre-sale price Pre-sale time Car actual price information Sales time Maintenance information Maintenance time Insurance information Insurance time, claim time, claim details Penalty information Penalty time, penalty details

Table 1

All nodes in the blockchain system are preset with a car data viewing interface. Any node will store the unique identifier, car information, car pre-sale price information, and car actual price information in the on-chain list stored through the car data viewing interface. , Maintenance information, insurance information, punishment information and other at least one piece of information is displayed for the car buyer to view.

In one embodiment, all nodes in the blockchain system can be given permission when registering in the blockchain system. For example, the OEM node can only chain the car details block, and the dealer node can only The pre-sale price block of the car, the actual price block of the car, and the maintenance block are chained. The insurance company node can only chain the insurance block, and the supervision node can only chain the penalty block. And all the blocks can query and download all the information on the chain.

This application is based on the blockchain-based car data sharing method, which will be distributed to all parties that generate car data in various industries, such as car manufacturers, car dealers, insurance companies, and car regulatory agencies that supervise the car industry. The establishment of an information sharing platform through blockchain technology allows all parties to participate in the joint construction of car data. All nodes cooperate to share data. Based on the immutable advantages of the blockchain system, reliable and safe car data is provided. All process data from production to scrapping can also be used for second-hand car estimation to improve the accuracy of second-hand car estimation.

In one embodiment, a block-chain-based car data sharing device is proposed. As shown in FIG. 4, it includes the following modules: a car information on-chain module, which is set to a host factory node to obtain car information and a unique corresponding car information Logo, generate the car detail block with the unique identifier and the car information, and upload the car detail block in the blockchain system to form a new blockchain. The host factory node will uniquely identify the car details block on the chain , Car information and hash value are recorded in the preset on-chain list; the broadcast and recording module is set to the OEM node to broadcast the on-chain car details block to other nodes in the blockchain system, and other nodes receive After the broadcast, record the unique identifier, car information and hash value corresponding to the car details block to the on-chain list corresponding to its own node; the maintenance information on-chain module is set as the dealer node to obtain maintenance information, and the maintenance information Contains a unique identifier, the dealer node generates maintenance blocks from the maintenance information, and the maintenance blocks are chained in the blockchain system and passed through the chain of the blockchain system. Structure, the maintenance block is linked to the hash value corresponding to the unique identifier to form a new blockchain, and the dealer node also records the maintenance information to the on-chain list corresponding to the unique identifier in its own node; the broadcast and update module , Set the dealer node to broadcast the maintenance block on the chain to other nodes in the blockchain system. After receiving the broadcast, the other nodes record the maintenance information corresponding to the maintenance block to their own nodes corresponding to the unique identifier. In the on-chain list, the hash value corresponding to the maintenance block is updated to the on-chain list corresponding to the unique identifier in its own node.

In one embodiment, the car information on-chain module includes: a unique identification comparison unit, which is set as a host factory node to compare the unique identification with all the unique identifications on the on-chain list. At the time of identification, the node of the host factory will generate a car detail block with the unique identification and car information, and upload the car detail block in the blockchain system to generate a block of car information; the car information comparison unit is set to When the unique identifier is included in the on-chain list, continue to determine whether the car information is the same as the car information corresponding to the unique identifier in the on-chain list. If the car information is the same, the host node will not chain the car information; If it is set to different, the OEM node will generate a car detail block with the unique identification and car information, and upload the car detail block in the blockchain system, and through the chain structure of the blockchain system, the car details area The block is linked to the hash value corresponding to the unique identifier to form a new blockchain, and the car information corresponding to the car details block is recorded to the corresponding unique identifier In the on-chain list of, update the hash value corresponding to the car details block to the on-chain list corresponding to the unique identifier.

In one embodiment, it also includes: an insurance information on-chain module, which is set up as an insurance company node to obtain insurance information, and the insurance information contains a unique identifier, the insurance company node generates insurance blocks from the insurance information, and places the insurance blocks on the blockchain The system is chained, and through the chain structure of the blockchain system, the insurance block is linked to the hash value corresponding to the unique identifier to form a new blockchain; the insurance information update module, set to the insurance company node will also insure The insurance information corresponding to the block is recorded in the on-chain list corresponding to the unique identifier in its own node, and the hash value corresponding to the insurance block is updated to the on-chain list corresponding to the unique identifier in its own node; broadcast and update The module is set up so that the insurance company node also broadcasts the on-chain insurance block to other nodes in the blockchain system. After receiving the broadcast, the other nodes record the insurance information corresponding to the insurance block to their own nodes corresponding to the unique identifier In the on-chain list, update the hash value corresponding to the insurance block to the on-chain list corresponding to the unique identifier in its own node.

In one embodiment, it also includes: a penalty information on-chain module, which is set as a supervision node to obtain penalty information, the penalty information contains a unique identifier, the supervision node generates a penalty block from the penalty information, and places the penalty block in the blockchain system Go to the chain and link the penalty block to the hash value corresponding to the unique identifier through the chain structure of the blockchain system to form a new blockchain; the penalty information update module, set as the supervision node will also correspond to the penalty block The punishment information is recorded in the on-chain list corresponding to the unique identifier in its own node, and the hash value corresponding to the punishment block is updated in the on-chain list corresponding to the unique identifier in its own node; the broadcast and update module, set In order to punish the node, it also broadcasts the punishment block on the chain to other nodes in the blockchain system. After receiving the broadcast, the other nodes record the punishment information corresponding to the punishment block to their own nodes on the chain corresponding to the unique identifier. In the list, the hash value corresponding to the penalty block is updated to the on-chain list corresponding to the unique identifier in its own node.

In one embodiment, the method further includes: a pre-sale price on-chain module, which is set as a dealer node to obtain pre-sale price information of the car. The pre-sale price information of the car contains a unique identifier, and the dealer node generates pre-sale price information of the car Price block, the pre-sale price block is uploaded in the blockchain system, and through the chain structure of the blockchain system, the pre-sale price block is linked to the hash value corresponding to the unique identifier to form a new area Blockchain; Pre-sale price update module, set as the dealer node also records the pre-sale price information corresponding to the pre-sale price block to its own node's on-chain list corresponding to the unique identifier, corresponding to the pre-sale price block The hash value of is updated to the on-chain list corresponding to the unique identifier in its own node; the broadcast and update module, set as a dealer node, also broadcasts the pre-sale price block of the chain to other nodes in the blockchain system After receiving the broadcast, the other nodes record the pre-sale price information corresponding to the pre-sale price block to the on-chain list corresponding to the unique identifier in their own node, and correspond to the pre-sale price block Update to the hash value of the own node in the chain list corresponding to the unique identification.

In one embodiment, the price information on-chain module is also set up for the dealer node to compare the unique identifier with all the unique identifiers in the on-chain list, and when the on-chain list contains the unique identifier, determine the car pre-sale Whether the price information is the same as the pre-sale price in the last car pre-sale price information corresponding to the unique identifier in the on-chain list, if they are the same, the dealer node does not upload the car pre-sale price information, if different , Then the dealer node generates the pre-sale price block from the pre-sale price information of the car, and then the pre-sale price block is uploaded in the blockchain system.

In one embodiment, it also includes: an actual price on-chain module, which is set to the dealer node to obtain the actual car price information after the completion of the car sale. The actual car price information contains a unique identifier. Price block, the actual price block is uploaded in the blockchain system, and the actual price block is linked to the hash value corresponding to the unique identifier through the chain structure of the blockchain system to form a new blockchain ; The actual price update module is set to the dealer node to also record the actual price information corresponding to the actual price block to the on-chain list corresponding to the unique identifier in its own node, and update the hash value corresponding to the actual price block to In the on-chain list corresponding to the unique identifier in its own node; the broadcast and update module is set to the dealer node to also broadcast the actual price block of the chain to other nodes in the blockchain system. After the other nodes receive the broadcast , Record the actual price information corresponding to the actual price block to the on-chain list corresponding to the unique identifier in its own node, and Inter block price corresponding hash value has been updated to list itself on the chain nodes with a unique identification corresponding.

In one embodiment, a computer device is proposed, which includes a memory and a processor. The memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, the processor executes the block-based Steps in the chain of car data sharing methods.

In one embodiment, a storage medium storing computer-readable instructions is proposed. When the computer-readable instructions are executed by one or more processors, the one or more processors execute the block-based Steps in the chain of car data sharing methods. The storage medium may be a non-volatile storage medium.

Those of ordinary skill in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing relevant hardware through a program. The program may be stored in a computer-readable storage medium, and the storage medium may include: Read only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk, etc.

The technical features of the above-mentioned embodiments can be arbitrarily combined. To simplify the description, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered within the scope of this description.

The above-mentioned embodiments only express some exemplary embodiments of the present application, and their descriptions are more specific and detailed, but they should not be construed as limiting the patent scope of the present application. It should be noted that, for those of ordinary skill in the art, without departing from the concept of the present application, a number of modifications and improvements can also be made, which all fall within the protection scope of the present application. Therefore, the protection scope of the patent of this application shall be subject to the appended claims.

Claims (20)

A car data sharing method based on blockchain, including: The host plant node obtains the car information and the unique identifier corresponding to the car information, generates the car detail block from the unique identifier and the car information, and then links the car detail block in the blockchain system to form a new Blockchain, the host factory node records the unique identifier, the car information and the hash value in the car details block on the chain in a preset on-chain list; The host factory node broadcasts the on-chain car detail block to other nodes in the blockchain system, and after receiving the broadcast, the other node broadcasts the unique identifier corresponding to the car detail block , The car information and the hash value are recorded in the on-chain list corresponding to its own node; The dealer node obtains maintenance information, and the maintenance information contains a unique identifier. The dealer node generates the maintenance information into a maintenance block, and the maintenance block is chained in the blockchain system and passed The chain structure of the blockchain system links the maintenance block to the hash value corresponding to the unique identifier to form a new blockchain, and the dealer node also records the maintenance information To the listed list corresponding to the unique identifier in its own node; The dealer node broadcasts the maintenance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the maintenance information corresponding to the maintenance block to In the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the maintenance block to the on-chain list in the own node corresponding to the unique identifier. The blockchain-based car data sharing method according to claim 1, wherein the unique identifier and the car information are used to generate a car detail block, and the car detail block is stored in a blockchain system Before going to the chain and forming a new blockchain, it also includes: The host factory node compares the unique identifier with all the unique identifiers in the on-chain list, and when the unique identifier is not in the on-chain list, the host factory node compares the unique identifier The identification and the car information generate a car detail block, and the car detail block is uploaded in a blockchain system, resulting in a block chain generating the car information; When the unique identifier is included in the on-chain list, continue to determine whether the car information is the same as the car information corresponding to the unique identifier in the on-chain list. If they are the same, the host factory node pair The car information is not on the chain; If different, the host plant node generates a car detail block from the unique identifier and the car information, and uploads the car detail block in the blockchain system, and passes the blockchain system's A chain structure, linking the car detail block to the hash value corresponding to the unique identifier to form a new blockchain, and recording the car information corresponding to the car detail block to the unique identifier In the corresponding on-chain list, the hash value corresponding to the car detail block is updated to the on-chain list corresponding to the unique identifier. The automotive data sharing method based on blockchain according to claim 1, further comprising: The insurance company node obtains insurance information, and the insurance information contains a unique identifier. The insurance company node generates the insurance information into the insurance block, and the insurance block is uploaded in the blockchain system, and through the The chain structure of the blockchain system links the insurance block to the hash value corresponding to the unique identifier to form a new blockchain; The insurance company node also records the insurance information corresponding to the insurance block to the on-chain list corresponding to the unique identifier in its own node, and updates the hash value corresponding to the insurance block to itself In the node's on-chain list corresponding to the unique identifier; The insurance company node also broadcasts the insurance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the insurance information corresponding to the insurance block To the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the insurance block to the on-chain list corresponding to the unique identifier in the own node. The automotive data sharing method based on blockchain according to claim 1, further comprising: The supervision node obtains the penalty information, and the penalty information contains a unique identifier. The supervision node generates the penalty information into a penalty block, and the penalty block is uploaded in the blockchain system, and passes the The chain structure of the blockchain system links the penalty block to the hash value corresponding to the unique identifier to form a new blockchain; The supervising node also records the penalty information corresponding to the penalty block in the own node in the on-chain list corresponding to the unique identifier, and updates the hash value corresponding to the penalty block to the own node In the linked list corresponding to the unique identifier in the list; The penalty node also broadcasts the penalty block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the penalty information corresponding to the penalty block to In the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the penalty block to the on-chain list in the own node corresponding to the unique identifier. The automotive data sharing method based on blockchain according to claim 1, further comprising: The dealer node obtains car pre-sale price information, and the car pre-sale price information contains a unique identifier, the dealer node generates the car pre-sale price information into a pre-sale price block, and converts the pre-sale price Blocks are chained in the blockchain system, and through the chain structure of the blockchain system, the pre-sale price block is linked to the hash value corresponding to the unique identifier to form a new area Block chain The dealer node also records the pre-sale price information corresponding to the pre-sale price block to the on-chain list corresponding to the unique identifier in its own node, and records the corresponding pre-sale price block The hash value is updated to the on-chain list corresponding to the unique identifier in its own node; The dealer node also broadcasts the pre-sale price block on the chain to other nodes in the blockchain system. After receiving the broadcast, the other node broadcasts the corresponding value of the pre-sale price block. The pre-sale price information is recorded in the on-chain list corresponding to the unique identifier in the own node, and the hash value corresponding to the pre-sale price block is updated to the on-chain corresponding to the unique identifier in the own node In the chain list. The blockchain-based car data sharing method according to claim 5, wherein the dealer node generates the pre-sale price block of the car pre-sale price information, and places the pre-sale price block in the Before going on chain in the blockchain system, it also includes: The dealer node compares the unique identifier with all the unique identifiers in the on-chain list, and when the on-chain list contains the unique identifier, judges the pre-sale price information of the car and Whether the pre-sale price in the last pre-sale price information of the car corresponding to the unique identifier in the on-chain list is the same, if they are the same, the dealer node does not carry out the pre-sale price information of the car On the chain, if different, the dealer node generates the pre-sale price block of the pre-sale price information of the car, and the pre-sale price block is uploaded in the blockchain system. The automotive data sharing method based on blockchain according to claim 1, further comprising: The dealer node obtains the actual price information of the automobile after the completion of the sale and purchase of the automobile. The actual price information of the automobile contains a unique identifier. The dealer node generates the actual price block of the actual price information of the automobile and converts the actual price Blocks are chained in the blockchain system, and through the chain structure of the blockchain system, the actual price block is linked to the hash value corresponding to the unique identifier to form a new block chain; The dealer node also records the actual price information corresponding to the actual price block to the on-chain list corresponding to the unique identifier in its own node, and stores the hash value corresponding to the actual price block Update to the already-listed list corresponding to the unique identifier in its own node; The dealer node also broadcasts the actual price block on the chain to other nodes in the blockchain system. After receiving the broadcast, the other node broadcasts the actual price block corresponding to the actual price block. The price information is recorded in the on-chain list corresponding to the unique identifier in the own node, and the hash value corresponding to the actual price block is updated to the on-chain list in the own node corresponding to the unique identifier. A car data sharing device based on blockchain, including: The car information on-chain module is set as a host factory node to obtain car information and a unique identifier corresponding to the car information, generate a car detail block from the unique identifier and the car information, and place the car detail block in the block The chain in the chain system forms a new blockchain, and the host plant node records the unique identifier, the car information and the hash value in the car detail block on the chain on the preset In the chain list; A broadcasting and recording module is set up so that the host plant node broadcasts the on-chain car detail block to other nodes in the blockchain system, and after receiving the broadcast, the other node sends the car detail area The unique identifier, the car information and the hash value corresponding to the block are recorded in the on-chain list corresponding to the own node; The maintenance information on-chain module is set as a dealer node to obtain maintenance information, the maintenance information contains a unique identifier, the dealer node generates the maintenance information into a maintenance block, and places the maintenance block in the block On the chain system, and through the chain structure of the blockchain system, link the maintenance block to the hash value corresponding to the unique identifier to form a new blockchain, the dealer The node also records the maintenance information to the on-chain list corresponding to the unique identifier in its own node; The broadcast and update module is set up such that the dealer node broadcasts the maintenance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node corresponds the maintenance block The maintenance information of is recorded in the on-chain list corresponding to the unique identifier in its own node, and the hash value corresponding to the maintenance block is updated to the on-chain list in its own node corresponding to the unique identifier in. The car data sharing device based on blockchain according to claim 8, wherein the car information on-chain module includes: The unique identification comparison unit is configured to compare the unique identification with all the unique identifications in the on-chain list by the host plant node. When there is no unique identification in the on-chain list, the The host plant node generates the car detail block from the unique identifier and the car information, and links the car detail block on the blockchain system, resulting in a block chain that generates the car information; The car information comparison unit is configured to continue to determine whether the car information is the same as the car information corresponding to the unique identifier in the on-chain list when the on-chain list contains the unique identifier, such as the same , Then the node of the host factory does not chain the car information; If the on-chain and update unit is set to be different, the OEM node generates the car detail block from the unique identifier and the car information, and the car detail block is chained in the blockchain system, and Through the chain structure of the blockchain system, the vehicle detail block is linked to the hash value corresponding to the unique identifier to form a new blockchain, and the corresponding The car information is recorded in the on-chain list corresponding to the unique identifier, and the hash value corresponding to the car detail block is updated to the on-chain list corresponding to the unique identifier. The automotive data sharing device based on blockchain according to claim 8, further comprising: The insurance information on-chain module is set up as an insurance company node to obtain insurance information, the insurance information contains a unique identifier, the insurance company node generates the insurance information into an insurance block, and the insurance block is placed in a blockchain system In the upper chain, and through the chain structure of the blockchain system, the insurance block is linked to the hash value corresponding to the unique identifier to form a new blockchain; The insurance information update module is set up such that the insurance company node also records the insurance information corresponding to the insurance block to the on-chain list corresponding to the unique identifier in its own node, corresponding to the insurance block The hash value of is updated to the on-chain list corresponding to the unique identifier in its own node; The broadcast and update module is set up so that the insurance company node also broadcasts the insurance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node transfers the insurance block The corresponding insurance information is recorded in the on-chain list corresponding to the unique identifier in its own node, and the hash value corresponding to the insurance block is updated to the on-chain corresponding to the unique identifier in its own node List. The automotive data sharing device based on blockchain according to claim 8, further comprising: The punishment information uploading module is set as the supervision node to obtain punishment information, the punishment information contains a unique identifier, the supervision node generates the punishment information into a punishment block, and the punishment block is placed in the blockchain system On-chain, and through the chain structure of the blockchain system, link the penalty block to the hash value corresponding to the unique identifier to form a new blockchain; The penalty information update module is set up so that the supervisory node also records the penalty information corresponding to the penalty block to the on-chain list corresponding to the unique identifier in its own node, and the corresponding The hash value is updated to the on-chain list corresponding to the unique identifier in its own node; The broadcast and update module is set up such that the penalty node also broadcasts the penalty block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node corresponds the penalty block Record the penalty information in the own node's on-chain list corresponding to the unique identifier, and update the hash value corresponding to the penalty block to the own node's on-chain list corresponding to the unique identifier in. The automotive data sharing device based on blockchain according to claim 8, further comprising: A pre-sale price on-chain module is set up for the dealer node to obtain pre-sale price information of the car, the pre-sale price information of the car contains a unique identifier, and the dealer node generates the pre-sale price of the pre-sale price information of the car Block, the pre-sale price block is uploaded in the blockchain system, and the pre-sale price block is linked to the unique identifier through the chain structure of the blockchain system Hash value to form a new blockchain; The pre-sale price update module is set up such that the dealer node also records the pre-sale price information corresponding to the pre-sale price block into the self-node corresponding to the on-chain list corresponding to the unique identifier, Updating the hash value corresponding to the pre-sale price block to the on-chain list corresponding to the unique identifier in its own node; The broadcast and update module is set up such that the dealer node also broadcasts the pre-sale price block on the chain to other nodes in the blockchain system. After receiving the broadcast, the other node The pre-sale price information corresponding to the sale price block is recorded in the on-chain list corresponding to the unique identifier in its own node, and the hash value corresponding to the pre-sale price block is updated to its own node and all The unique identifier is listed in the linked list. The blockchain-based car data sharing device according to claim 12, wherein the price information on-chain module is further arranged for the dealer node to associate the unique identifier with all of the on-chain lists The unique identifier is compared, and when the unique identifier is included in the on-chain list, it is judged that the pre-sale price information of the car and the unique identifier in the on-chain list correspond to the last pre-automatic car on the chain Whether the pre-sale prices in the sales price information are the same, if they are the same, the dealer node does not chain the pre-sale price information of the car, and if they are different, the dealer node uses the pre-sale price information Generate a pre-sale price block, and upload the pre-sale price block in the blockchain system. The automobile data sharing device based on blockchain according to claim 8, further comprising: The actual price on-chain module is set for the dealer node to obtain the actual car price information after the completion of the car sale, the actual car price information contains a unique identifier, and the dealer node generates the actual car price information Block, the actual price block is uploaded in the blockchain system, and the actual price block is linked to the corresponding unique identifier through the chain structure of the blockchain system Hope to form a new blockchain; An actual price update module, which is set so that the dealer node also records the actual price information corresponding to the actual price block to the on-chain list corresponding to the unique identifier in its own node, and stores the actual price The hash value corresponding to the block is updated to the on-chain list corresponding to the unique identifier in its own node; The broadcast and update module is set up such that the dealer node also broadcasts the actual price block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other nodes broadcast the actual price The actual price information corresponding to the block is recorded in the on-chain list corresponding to the unique identifier in the own node, and the hash value corresponding to the actual price block is updated to correspond to the unique identifier in the own node Is on the list. A computer device includes a memory and a processor. The memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, the processor causes the processor to perform the following steps: The host plant node obtains the car information and the unique identifier corresponding to the car information, generates the car detail block from the unique identifier and the car information, and then links the car detail block in the blockchain system to form a new Blockchain, the host factory node records the unique identifier, the car information and the hash value in the car details block on the chain in a preset on-chain list; The host factory node broadcasts the on-chain car detail block to other nodes in the blockchain system, and after receiving the broadcast, the other node broadcasts the unique identifier corresponding to the car detail block , The car information and the hash value are recorded in the on-chain list corresponding to its own node; The dealer node obtains maintenance information, and the maintenance information contains a unique identifier. The dealer node generates the maintenance information into a maintenance block, and the maintenance block is chained in the blockchain system and passed The chain structure of the blockchain system links the maintenance block to the hash value corresponding to the unique identifier to form a new blockchain, and the dealer node also records the maintenance information To the listed list corresponding to the unique identifier in its own node; The dealer node broadcasts the maintenance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the maintenance information corresponding to the maintenance block to In the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the maintenance block to the on-chain list in the own node corresponding to the unique identifier. The computer device according to claim 15, wherein the processor further performs the following steps: The insurance company node obtains insurance information, the insurance information contains a unique identifier, the insurance company node generates the insurance information into the insurance block, and the insurance block is uploaded in the blockchain system, and through the The chain structure of the blockchain system links the insurance block to the hash value corresponding to the unique identifier to form a new blockchain; The insurance company node also records the insurance information corresponding to the insurance block to the on-chain list corresponding to the unique identifier in its own node, and updates the hash value corresponding to the insurance block to itself In the node's on-chain list corresponding to the unique identifier; The insurance company node also broadcasts the insurance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the insurance information corresponding to the insurance block To the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the insurance block to the on-chain list corresponding to the unique identifier in the own node. The computer device according to claim 15, wherein the processor further performs the following steps: The supervision node obtains the penalty information, and the penalty information contains a unique identifier. The supervision node generates the penalty information into a penalty block, and the penalty block is uploaded in the blockchain system, and passes the The chain structure of the blockchain system links the penalty block to the hash value corresponding to the unique identifier to form a new blockchain; The supervising node also records the penalty information corresponding to the penalty block in the own node in the on-chain list corresponding to the unique identifier, and updates the hash value corresponding to the penalty block to the own node In the linked list corresponding to the unique identifier in the list; The penalty node also broadcasts the penalty block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the penalty information corresponding to the penalty block to In the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the penalty block to the on-chain list in the own node corresponding to the unique identifier. A storage medium storing computer-readable instructions, which when executed by one or more processors, causes the one or more processors to perform the following steps: The host plant node obtains the car information and the unique identifier corresponding to the car information, generates the car detail block from the unique identifier and the car information, and then links the car detail block in the blockchain system to form a new Blockchain, the host factory node records the unique identifier, the car information and the hash value in the car details block on the chain in a preset on-chain list; The host factory node broadcasts the on-chain car detail block to other nodes in the blockchain system, and after receiving the broadcast, the other node broadcasts the unique identifier corresponding to the car detail block , The car information and the hash value are recorded in the on-chain list corresponding to its own node; The dealer node obtains maintenance information, and the maintenance information contains a unique identifier. The dealer node generates the maintenance information into a maintenance block, and the maintenance block is chained in the blockchain system and passed The chain structure of the blockchain system links the maintenance block to the hash value corresponding to the unique identifier to form a new blockchain, and the dealer node also records the maintenance information To the listed list corresponding to the unique identifier in its own node; The dealer node broadcasts the maintenance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the maintenance information corresponding to the maintenance block to In the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the maintenance block to the on-chain list in the own node corresponding to the unique identifier. The storage medium of claim 18, wherein one or more of the processors further perform the following steps: The insurance company node obtains insurance information, the insurance information contains a unique identifier, the insurance company node generates the insurance information into the insurance block, and the insurance block is uploaded in the blockchain system, and through the The chain structure of the blockchain system links the insurance block to the hash value corresponding to the unique identifier to form a new blockchain; The insurance company node also records the insurance information corresponding to the insurance block to the on-chain list corresponding to the unique identifier in its own node, and updates the hash value corresponding to the insurance block to itself In the node's on-chain list corresponding to the unique identifier; The insurance company node also broadcasts the insurance block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the insurance information corresponding to the insurance block To the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the insurance block to the on-chain list corresponding to the unique identifier in the own node. The storage medium of claim 18, wherein one or more of the processors further perform the following steps: The supervision node obtains the penalty information, and the penalty information contains a unique identifier. The supervision node generates the penalty information into a penalty block, and the penalty block is uploaded in the blockchain system, and passes the The chain structure of the blockchain system links the penalty block to the hash value corresponding to the unique identifier to form a new blockchain; The supervising node also records the penalty information corresponding to the penalty block in the own node in the on-chain list corresponding to the unique identifier, and updates the hash value corresponding to the penalty block to the own node In the linked list corresponding to the unique identifier in the list; The penalty node also broadcasts the penalty block on the chain to other nodes in the blockchain system, and after receiving the broadcast, the other node records the penalty information corresponding to the penalty block to In the on-chain list corresponding to the unique identifier in the own node, update the hash value corresponding to the penalty block to the on-chain list in the own node corresponding to the unique identifier.

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