HK40020407B - Method and device for transfering resource, storage medium and electronic equipment - Google Patents

Description

Resource transfer methods, resource transfer devices, storage media and electronic equipment

Technical Field

This disclosure relates to the field of information security technology, and more specifically, to a resource transfer method, a resource transfer device, an electronic device, and a computer-readable storage medium.

Background Technology

With the development of network technology, users can easily interact with each other online. For example, users can transfer resources online, such as in e-commerce transactions, where goods are transferred from one user to another through an e-commerce platform.

However, current e-commerce transaction processes still suffer from problems such as falsified product origins, inaccurate historical transaction information, and a need to improve buyer trust in sellers. Therefore, a new method for resource transfer is needed.

It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

Summary of the Invention

The purpose of this disclosure is to provide a resource transfer method, resource transfer device, electronic device, and computer-readable storage medium, which can improve, to a certain extent, the problems of falsified resource sources, inaccurate historical transaction information, and the need to improve the buyer's trust in the seller during the resource transfer process.

According to one aspect of this disclosure, a blockchain-based resource transfer method is provided, comprising:

In response to the first account's publish request, publish the public key data in a key pair;

Obtain the blockchain associated with the target resource, wherein each block on the blockchain contains the account information of the previous owner and the account information of the next owner of the target resource;

Receive target account information encrypted by the second account using the public key data, and send the target account information to the first account;

In response to a transfer request from the first account, the target resource is transferred to the target account; the target account is obtained by decrypting the target account information using the private key data in the key pair.

A new block is generated as the tail block of the blockchain, and the information of the target account is written into the block preceding the tail block as the next owner account information, and the information of the first account is written into the tail block as the previous owner account information.

According to one aspect of this disclosure, a resource transfer method is provided, the method being applied to a blockchain system, the blockchain system including a blockchain database, transaction nodes, resource providing nodes, and resource requesting nodes, the method comprising:

The transaction node responds to the resource provider node's publication request by publishing the public key data in a key pair;

The transaction node obtains the blockchain associated with the target resource from the blockchain database. Each block on the blockchain contains the account information of the previous owner and the account information of the next owner of the target resource.

The resource requesting node sends the target node information, encrypted using the public key data, to the resource providing node through the transaction node;

The transaction node responds to the transfer request from the resource provider node by transferring the target resource to the target node; the target node is obtained by decrypting the target node information using the private key data in the key pair;

The blockchain database generates a new block as the tail block of the blockchain, and writes the information of the target node into the block preceding the tail block as the next owner account information, and writes the information of the resource providing node into the tail block as the previous owner account information.

In one exemplary embodiment of this disclosure, the transaction node transfers the target resource to the target node in response to a transfer request from the resource providing node, including:

The transaction node generates a smart contract that indicates the resource transfer conditions for transferring the target resource to the target account, and when the resource transfer conditions indicated by the smart contract are detected, the target resource is transferred to the target account based on the smart contract.

According to one aspect of this disclosure, a resource transfer apparatus is provided, comprising:

The public key publishing module is used to publish the public key data of a key pair in response to a publishing request from the first account;

The blockchain query module is used to obtain the blockchain associated with the target resource. Each block on the blockchain contains the account information of the previous owner and the account information of the next owner of the target resource.

The target account acquisition module is used to receive target account information encrypted by the second account using the public key data, and send the target account information to the first account;

The resource transfer module is used to transfer the target resource to the target account in response to a transfer request from the first account; the target account is obtained by decrypting the target account information using the private key data in the key pair;

The block maintenance module is used to generate new blocks as the tail block of the blockchain, and to write the information of the target account into the block preceding the tail block as the next owner account information, and to write the information of the first account into the tail block as the previous owner account information.

In one exemplary embodiment of this disclosure, each block is written with the resource identifier information of the target resource; the blockchain query module is specifically used to query according to the received input resource identifier, and to take the block that matches the input resource identifier as the block on the blockchain associated with the target resource.

In one exemplary embodiment of this disclosure, after acquiring the blockchain associated with the target resource, the apparatus further includes:

The resource tracing module is used to traverse backwards based on the previous owner account information written in each block on the blockchain, and take the last block traversed as the first target block; and to determine the source of the target resource based on the owner account of the first target block.

In one exemplary embodiment of this disclosure, after acquiring the blockchain associated with the target resource, the apparatus further includes:

The ownership confirmation module is used to traverse backwards based on the next owner account information written in each block on the blockchain, and take the last block traversed as the second target block; and to determine whether the first account owns the target resource based on whether the owner account of the second target block is consistent with the first account.

In one exemplary embodiment of this disclosure, the apparatus further includes:

The token issuance module is used to determine whether the first account owns the target resource after receiving a token acquisition request from the first account; and when it is determined that the first account owns the target resource, to issue randomly generated token information to the first account through a third-party certification authority, so that the first account can carry the token information when transferring the target resource to the target account.

In one exemplary embodiment of this disclosure, the token issuance module determines whether the first account owns the target resource by the following steps: traversing backwards according to the next owner account information written in each block on the blockchain, and taking the last block traversed as the second target block; determining whether the first account owns the target resource based on whether the owner account of the second target block is consistent with the first account.

In one exemplary embodiment of this disclosure, the resource transfer module transfers the target resource to the target account through the following steps: generating a smart contract for indicating resource transfer conditions for transferring the target resource to the target account; and when the resource transfer conditions indicated by the smart contract are detected, transferring the target resource to the target account based on the smart contract.

In one exemplary embodiment of this disclosure, each block on the blockchain is written with the characteristic information of the target resource; the apparatus further includes:

The resource feature verification module is used to verify the consistency between the resource feature information uploaded by the target account and the feature information written in the block, so as to confirm whether the resource obtained by the target account is the target resource.

In one exemplary embodiment of this disclosure, the feature information includes hash feature information obtained by hashing the feature data of the target resource.

In one exemplary embodiment of this disclosure, the apparatus further includes:

The information recording module is used to record the resource transfer information of the first account to the blockchain network through the smart contract after the target resource is transferred to the target account; and to obtain the resource transfer information of the first account from the blockchain network as the query result when a query request for querying the resource transfer history of the first account is received.

According to one aspect of this disclosure, an electronic device is provided, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform the method described in any of the preceding methods by executing the executable instructions.

According to one aspect of this disclosure, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method described in any of the preceding claims.

The exemplary embodiments disclosed herein may have some or all of the following beneficial effects:

In the resource transfer method provided in the exemplary embodiments of this disclosure, on the one hand, key information in each transfer process of the target resource is recorded in the blockchain. Based on the historical traceability and immutability of the blockchain, each transfer stage of the target resource can be truthfully recorded on the blockchain, and all records can be traced on the blockchain. Moreover, since the transfer records are jointly maintained by numerous node devices in the blockchain, tampering with the transfer records requires control of a majority of node devices, thus ensuring the fairness of the generated transfer records. This avoids problems such as falsifying the source of goods and inaccurate historical transaction information, and avoids information asymmetry caused by fraudulent orders or advertising effects, thereby increasing the buyer's trust in the seller. On the other hand, the first account can determine whether the second account has a need to acquire the target resource based on whether the target account information can be decrypted through the reserved private key data, thereby achieving the screening of users who truly have a need for resources. At the same time, even if others obtain the encrypted target account information, they cannot decrypt it without the private key data, thus avoiding the problem of target account information leakage.

It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

Attached Figure Description

The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

Figure 1 illustrates a schematic diagram of an exemplary system architecture for a resource transfer method and apparatus to which embodiments of the present disclosure can be applied;

Figure 2 schematically illustrates a flowchart of a resource transfer method according to an embodiment of the present disclosure;

Figure 3 schematically illustrates a block data structure diagram according to an embodiment of the present disclosure;

Figure 4 schematically illustrates a resource tracing process according to an embodiment of the present disclosure;

Figure 5 schematically illustrates an ownership confirmation process according to an embodiment of the present disclosure;

Figure 6 schematically illustrates an interactive flowchart of a secured transaction process according to an embodiment of the present disclosure;

Figure 7 schematically illustrates a blockchain diagram according to an embodiment of the present disclosure;

Figure 8 schematically illustrates a flowchart of a resource transfer method according to an embodiment of the present disclosure;

Figure 9 schematically illustrates a flowchart of a resource transfer method according to an embodiment of the present disclosure;

Figure 10 schematically illustrates an interactive interface during a resource transfer process according to one embodiment of the present disclosure;

Figure 11 schematically illustrates a block diagram of a resource transfer apparatus according to an embodiment of the present disclosure;

Figure 12 shows a schematic diagram of the structure of a computer system suitable for implementing an electronic device according to embodiments of the present disclosure.

Detailed Implementation

Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete, and to fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced with one or more of the specific details omitted, or other methods, components, apparatus, steps, etc., can be employed. In other instances, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of this disclosure.

Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different network and/or processor devices and/or microcontroller devices.

Figure 1 illustrates a schematic diagram of a system architecture for an exemplary application environment in which an embodiment of the blockchain-based resource transfer method and resource transfer device can be applied.

Blockchain is a novel application model of computer technologies such as distributed data storage, peer-to-peer transmission, consensus mechanisms, and cryptographic algorithms. Essentially, a blockchain is a decentralized database, a chain of data blocks linked together using cryptographic methods. Each data block contains information about a batch of network transactions, used to verify the validity of the information (anti-counterfeiting) and generate the next block. A blockchain can include an underlying platform, a platform product and service layer, and an application service layer.

The underlying blockchain platform can include processing modules such as user management, basic services, smart contracts, and operational monitoring. The user management module is responsible for managing the identity information of all blockchain participants, including maintaining public and private key generation (account management), key management, and maintaining the correspondence between user real identities and blockchain addresses (access management). Furthermore, under authorization, it monitors and audits transactions of certain real identities and provides risk control rule configuration (risk control audit). The basic services module is deployed on all blockchain node devices to verify the validity of business requests. After consensus is reached on valid requests, they are recorded in storage. For a new business request, the basic services first perform interface adaptation parsing and authentication (interface adaptation), and then encrypt the business information through a consensus algorithm (consensus management). After encryption, the data is transmitted completely and consistently to the shared ledger (network communication) and recorded and stored. The smart contract module is responsible for contract registration, issuance, triggering, and execution. Developers can define contract logic using a programming language and publish it to the blockchain (contract registration). According to the contract terms, the key or other events are invoked to trigger execution and complete the contract logic. It also provides functions for contract upgrades and cancellations. The operation monitoring module is mainly responsible for deployment, configuration modification, contract settings, cloud adaptation, and real-time status visualization output during product release, such as alarms, monitoring network conditions, and monitoring the health status of node devices.

The platform's product service layer provides the basic capabilities and implementation frameworks for typical applications. Developers can leverage these basic capabilities, along with the specific characteristics of their business needs, to implement blockchain-based business logic. The application service layer provides blockchain-based application services to business stakeholders.

A blockchain network is an end-to-end decentralized network composed of numerous nodes. Each node is allowed to obtain a complete copy of the database, and the nodes work together to maintain the entire blockchain based on a consensus mechanism.

As shown in Figure 1, the system architecture 100 in this example embodiment may include distributed nodes 101, 102, 103, 104, 105, and 106 of the aforementioned blockchain network; in addition, it may also include terminal devices 107, 108, and 109. The distributed nodes can be connected via communication links, such as wired or wireless communication links, and multiple distributed nodes together form the blockchain network. On the other hand, users can access the corresponding nodes through the network via terminal devices 107, 108, and 109.

It should be understood that the number of distributed nodes and terminal devices shown in Figure 1 is merely illustrative. Depending on implementation needs, any number of distributed nodes and terminal devices can be used.

In one embodiment of this disclosure, distributed node 101 (which may also be any one or more of distributed nodes 102, 103, 104, 105, and 106) may, in response to a publishing request from a first account, publish public key data in a key pair; acquire a blockchain associated with the target resource, wherein each block on the blockchain contains the previous owner account information and the next owner account information of the target resource; receive target account information encrypted by a second account using the public key data, and send the target account information to the first account; transfer the target resource to the target account in response to a transfer request from the first account; the target account is obtained by decrypting the target account information using the private key data in the key pair; and generate a new block as the tail block of the blockchain, and write the target account information into the block preceding the tail block as the next owner account information, and write the first account information into the tail block as the previous owner account information.

The resource transfer method provided in the above embodiments, on the one hand, records key information in each transfer process of the target resource in the blockchain. Based on the historical traceability and immutability of the blockchain, each transfer stage of the target resource can be truly recorded on the blockchain, and all records can be traced on the blockchain. Moreover, since the transfer records are jointly maintained by numerous node devices in the blockchain, tampering with the transfer records requires control of most of the node devices, thus ensuring the fairness of the generated transfer records. This avoids problems such as falsifying the source of goods and inaccurate historical transaction information, and avoids information asymmetry caused by fraudulent orders or advertising effects, thereby increasing the buyer's trust in the seller. On the other hand, the first account can determine whether the second account has a need to acquire the target resource based on whether the target account information can be decrypted through the reserved private key data, thus achieving the screening of users who truly have a need for resources. At the same time, even if others obtain the encrypted target account information, they cannot decrypt it without the private key data, thus avoiding the problem of target account information leakage.

It should be noted that the blockchain-based resource transfer method provided in this embodiment is generally executed by blockchain nodes, and correspondingly, the blockchain-based resource transfer device is generally located within the blockchain nodes. For example, the aforementioned blockchain system may include nodes such as a blockchain database, transaction nodes, resource providing nodes, and resource requesting nodes; the blockchain-based resource transfer method provided in this example embodiment can be executed by transaction nodes, and correspondingly, the blockchain-based resource transfer device is generally located within the transaction nodes.

The following provides a more detailed description of a blockchain-based resource transfer method provided in this example embodiment. Referring to Figure 2, the method may include the following steps S210 to S250. Wherein:

In step S210, the public key data of a key pair is published in response to the publication request of the first account.

In this example implementation, the transferred resource can be a commodity. The commodity can be a physical entity, such as electronic devices, clothing, food, or vehicles; it can also be a non-physical entity, such as e-books, electronic documents, or digital images. One meaning of resource transfer is the transfer of ownership of the resource from a first account to a target account, such as a commodity transaction, which is a manifestation of resource transfer. However, the form of resource transfer in this example implementation is not limited to this.

Taking commodity trading as an example, if the first account, i.e. the seller, wants to sell a certain commodity (i.e. the target resource), it can send a publishing request to the trading node through the resource providing node. After receiving the publishing request sent by the first account through the resource providing node, the trading node can publish the information that the target resource is requested to be sold in the blockchain network, such as marking the target resource as a pending sale. Other accounts can know that the target resource is in a pending sale state after receiving the information through the corresponding node.

Furthermore, in this exemplary embodiment, when the first account publishes the target resource sale information through the resource providing node, it can also generate a key pair through the resource providing node. In this exemplary embodiment, the key pair may include public key data and private key data; wherein, the private key data may be retained by the first account itself; the public key data may be published together with the target resource sale information. In this exemplary embodiment, the key pair can be generated using the RSA encryption algorithm. Of course, in other exemplary embodiments of this disclosure, the key pair can also be generated using other methods such as the Cramer-Shoup encryption algorithm, the Elgamal encryption algorithm, or the elliptic curve encryption algorithm.

In step S220, the blockchain associated with the target resource is obtained, and each block on the blockchain contains the previous owner's account information and the next owner's account information of the target resource.

In this example implementation, the transaction node can obtain the blockchain associated with the target resource, thereby facilitating the verification of the target resource based on the obtained blockchain. In this example implementation, the blockchain can consist of multiple blocks, and the data generated during each resource transfer is stored through the data structure of the blocks.

For example, each time a target resource is transferred, a block is created to record transaction data. Figure 3 shows a data structure 300 of the block in this example embodiment. The block data structure includes block data and transaction flow data. The block data can be used to record the block's attribute data. For example, resource identification information (such as a product ID) can be used to record which resource the block corresponds to; the creator's account information can be used to record which account created the block; the attribute characteristics of the target resource can be recorded through resource feature information; in addition, the block data can also record other information such as the block's creation time. The transaction flow data can be used to record information directly related to the resource transfer. For example, the previous owner's account information can be used to record the address of the previous owner's account of the target resource; the next owner's account information can be used to record the address of the next owner's account of the target resource; in addition, the transaction flow data can also record other information such as the transaction amount.

Based on the above block structure, in this example implementation, transaction nodes can query based on the received input resource identifier and use the block that matches the input resource identifier as a block on the blockchain associated with the target resource. For example, a user can input a product ID through an input window. After receiving the product ID, the transaction node can query the blockchain network based on the product ID to obtain a block containing that product ID, thus forming a blockchain associated with the target resource. Therefore, based on the method in this example implementation, arbitrary transaction data of the target product can be quickly obtained from massive transaction data, thereby improving the query efficiency in processes such as counterfeit identification or determining the source of goods.

Furthermore, in this example embodiment, the source of the target resource can also be determined based on the blockchain associated with the target resource. For example, the blockchain can be traversed backward based on the previous owner account information written in each block, and the last block reached can be taken as the first target block. Then, the source of the target resource can be determined based on the owner account of the first target block.

For example, referring to Figure 4, a block in the blockchain records data including a product ID of International Mobile Equipment Identity (IMEI) 123456780000123, a block creator account of Frank, product feature information of 5f249e4edfd82d758683bf084bc4a979, and a previous owner account of Ellen. Therefore, it can be determined that the previous owner account of the target resource is Ellen; similarly, based on the block created by the previous owner account Ellen, the previous owner account of the target resource can be determined to be David; and so on, until the last block is traversed, and the last block traversed is taken as the first target block; the owner of the first target block can be the manufacturer, and its previous owner account information may be null (NULL); furthermore, the manufacturer of the target resource can be determined based on the owner of the first target block, thus revealing the source of the target resource. The starting block of the above traversal process can be a block randomly selected on the blockchain or a specific block on the blockchain. This exemplary embodiment does not impose any special limitations on this.

In this example implementation, it can also be determined whether the first account owns the target resource, i.e., whether it has ownership of the target resource, based on the blockchain associated with the target resource, or whether the first account is qualified to decide on the transfer of the target resource. For example, it can be traversed backwards based on the next owner account information written in each block on the blockchain, and the last block traversed is taken as the second target block; whether the first account owns the target resource is determined based on whether the owner account of the second target block is consistent with the first account.

For example, referring to Figure 5, the data recorded in a block of the blockchain includes a product ID of International Mobile Equipment Identity 123456780000123, a block creator account of David, product feature information of 5f249e4edfd82d758683bf084bc4a979, and a next owner account of Ellen. Therefore, it can be determined that the next owner account of the target resource is Ellen; similarly, based on the block created by the next owner account Ellen, the next next owner account of the target resource can be determined to be Frank; and so on, until the last block traversed, and the last block traversed is taken as the second target block; the owner of the second target block can be the seller account of the target resource, and its next owner account information may be null (NULL); furthermore, if the owner account of the second target block is the same account as the first account, it can be determined that the first account owns the target resource, and thus the first account is qualified to decide the transfer of the target resource. The starting block of the above traversal process can be a block randomly selected on the blockchain or a specific block on the blockchain. This exemplary embodiment does not impose any special limitations on this.

In other exemplary embodiments of this disclosure, the buyer may also determine whether the first account owns the target resource through other means. For example, after receiving a token acquisition request from the first account, the transaction node may automatically determine whether the first account owns the target resource through the above process or other means; when it is determined that the first account owns the target resource, a randomly generated token is issued to the first account through a third-party certification authority, so that the first account carries the token when transferring the target resource to the target account.

After receiving the token information, the target account can verify it with the aforementioned third-party authentication authority. If the verification is successful, it indicates that the first account indeed owns the target resource. Through this method, the third-party authentication authority can obtain the seller's information, but the buyer cannot. Therefore, the seller can complete the transaction without publicly disclosing their account address, achieving anonymous sales and enhancing the protection of the seller's personal information. Furthermore, in other exemplary embodiments of this disclosure, seller anonymity can also be achieved through methods such as digital signatures or digital certificates, which also fall within the scope of protection of this disclosure.

In step S230, the target account information encrypted by the public key data by the second account is received, and the target account information is sent to the first account.

In this example implementation, if a second account (such as a buyer) wishes to acquire the target resource, it can first verify the source information of the target resource and the ownership information of the first account regarding the target resource based on the blockchain obtained by the transaction node, using the method described in step S220 above. After verification, it can obtain the public key data published by the first account from the transaction node and encrypt the target account used to receive the target resource using the public key data. In this example implementation, the target account can be the same account as the second account, or it can be another account designated by the second account; this disclosure does not impose any special limitations on this.

After encrypting the target account information using the public key data, it can be sent to the transaction node through the resource request node. Upon receiving the encrypted target account information, the transaction node forwards it to the resource provider node. The second account, after obtaining the encrypted target account information through the resource provider node, can decrypt it using the private key data in the aforementioned key pair to obtain the decrypted target account information. In this example embodiment, the target account information is encrypted using public key data, and only the first account can decrypt it using the private key data to obtain the target account information. Therefore, on the one hand, the first account can determine whether the second account has a need for the target resource based on whether the target account information can be decrypted using the reserved private key data, thus achieving the screening of users who genuinely have resource needs. On the other hand, even if others obtain the encrypted target account information, they cannot decrypt it because they do not have the private key data, thereby avoiding the problem of target account information leakage.

In step S240, the target resource is transferred to the target account in response to the transfer request from the first account.

To improve the reliability of the resource transfer process and enhance the buyer's trust in the seller, this example implementation can employ smart contracts to implement escrow transactions. This allows the arbitration and settlement rules of the escrow transaction to be written into the blockchain, making them immutable. For example, a smart contract can first be generated to indicate the resource transfer conditions for transferring the target resource to the target account. When the resource transfer conditions indicated by the smart contract are detected, the target resource is transferred to the target account based on the smart contract.

For example, Figure 6 illustrates a smart contract-based escrow transaction process in this exemplary embodiment. In step S610, the first account, such as the seller, can provide pricing information for the target resource to the smart contract. In step S620, the second account, such as the buyer, can obtain the pricing information for the target resource through the smart contract and make payment according to the pricing information; the payment is temporarily held as collateral in the smart contract's contract account. In step S630, after receiving the buyer's payment, the smart contract's contract account can notify the first account to ship the goods. In step S640, the first account provides the target resource to the target account. In step S650, after receiving the target resource, the target account can send a confirmation of receipt to the smart contract. In an exemplary embodiment, after obtaining the buyer's confirmation of receipt, the smart contract can forward the buyer's payment temporarily held in its contract account to the first account.

In another exemplary embodiment, when the first account provides the target resource to the target account, it may also simultaneously carry the token information described in step S220 above. Furthermore, in step S650, after receiving the target resource, the target account may upload the received token information to the smart contract. Then, in step S660, the smart contract verifies the token information uploaded by the target account. If the verification passes, it indicates that the first account indeed possesses ownership of the target resource; otherwise, it indicates that the first account may be an unauthorized merchant.

In another exemplary embodiment, in step S650, after receiving the target resource, the target account can also obtain resource feature information of the received resource and upload the obtained resource feature information to the smart contract. Then, in step S660, the smart contract verifies the consistency between the resource feature information uploaded by the target account and the feature information written in the block to confirm whether the resource obtained by the target account is the target resource.

For example, the target resource can be a product with a physical entity, and the product's label (such as a QR code label or an RFID (Radio Frequency Identification) label) can contain the product's characteristic information. In step S650, the product's characteristic information can be read by scanning the product's label. In step S660, the smart contract can perform a consistency comparison between the characteristic information of the product read by the target account and the characteristic information written in the block. If they match, it means that the resource obtained by the target account is the target resource; otherwise, the resource obtained by the target account may not be the target resource. If the target resource is not a product with a physical entity, such as a digital product, the aforementioned characteristic information can also be directly written into a designated location of the digital product, and this exemplary embodiment is not limited to this.

In this example implementation, the aforementioned feature information may include hash feature information obtained by hashing the feature data of the target resource. For example, if the target resource has multiple components, the feature data of the target resource may include the unique identifier of each component; then the hash feature information of the target resource can be obtained by hashing the unique identifier of each component. As another example, if the target resource is a digital product, then the digital product is directly hashed, and the resulting hash code is used as the hash feature information of the target resource.

In step S670, the verification result is notified to the target account. In step S680, if the verification of the target resource and the first account is successful, the smart contract can forward the buyer's payment temporarily stored in its contract account to the first account. Furthermore, in other exemplary embodiments of this disclosure, the smart contract can also autonomously determine whether the target account has received the resource based on logistics information, and automatically forward the buyer's payment temporarily stored in its contract account to the first account if it does not receive confirmation of receipt from the target account within the stipulated time; this also falls within the scope of protection of this disclosure.

In step S250, a new block is generated as the tail block of the blockchain, and the information of the target account is written into the block preceding the tail block as the next owner account information, and the information of the first account is written into the tail block as the previous owner account information.

For example, referring to Figure 7, before the first account Julia transfers the target resource to the target account Kate, the creator account of the tail block of the blockchain is Julia, the previous owner account is Ellen, and the next owner account is null (NULL). After the first account Julia transfers the target resource to the target account Kate, a new block can be generated as the tail block of the blockchain. The data recorded in the newly generated tail block includes the product ID as International Mobile Equipment Identity 123456780000123, the block creator account as Frank, the product feature information as 5f249e4edfd82d758683bf084bc4a979, the previous owner account as Julia, and the next owner account as null (NULL). At the same time, the target account Kate is written into the block preceding the tail block as the next owner account information.

Furthermore, in this exemplary embodiment, after the target resource is transferred to the target account, the resource transfer information of the first account can be recorded to the blockchain network through the smart contract. Then, upon receiving a query request to inquire about the resource transfer history of the first account, the resource transfer information of the first account can be obtained from the blockchain network as the query result. For example, a buyer can query the seller's past transaction records based on the seller's account information, thereby achieving a credit assessment of the seller. In other exemplary embodiments of this disclosure, a credit assessment of the seller can also be achieved based on the seller's past transaction records using a trained machine learning model or other methods; this exemplary embodiment does not impose any special limitations on this approach.

Next, in yet another embodiment, a further resource transfer method according to this example implementation will be described. This resource transfer method is applied to a blockchain system, which includes a blockchain database, transaction nodes, resource providing nodes, and resource requesting nodes, etc. Referring to FIG8, the method may include the following steps S810 to S850. Wherein:

In step S810, the transaction node responds to the resource provider node's publication request by publishing the public key data in a key pair.

In step S820, the transaction node obtains the blockchain associated with the target resource from the blockchain database. Each block on the blockchain contains the previous owner's account information and the next owner's account information of the target resource.

For example, referring to Figure 9, taking commodity transactions as an example, buyer 901 can use the input window shown in Figure 10 to query the block at the transaction node based on the commodity identifier, thereby obtaining the blockchain associated with the target resource; then, based on the blockchain associated with the target resource, operations such as commodity traceability and circulation process query can be performed; the corresponding operation process has been detailed in step S220 above, so it will not be repeated here. In addition, the buyer can also use the input window shown in Figure 10 to query the historical transaction records of the account corresponding to the input account identifier at the transaction node, thereby conducting a credit assessment of the seller.

In step S830, the resource requesting node sends the target node information encrypted with the public key data to the resource providing node through the transaction node.

In step S840, the transaction node, in response to a transfer request from the resource provider node, transfers the target resource to the target node; the target node is obtained by decrypting the target node information using the private key data in the key pair. For example, the transaction node can generate a smart contract indicating resource transfer conditions for transferring the target resource to the target node, and when resource transfer conditions indicated by the smart contract are detected, the target resource is transferred to the target node based on the smart contract.

In addition, the blockchain system also includes a third-party certification authority; the method may further include: when it is determined that the resource providing node owns the target resource, the third-party certification authority issues randomly generated token information to the resource providing node; the resource providing node carries the token information when transferring the target resource to the target node.

In step S850, the blockchain database generates a new block as the tail block of the blockchain, and writes the information of the target node into the block preceding the tail block as the next owner node information, and writes the information of the resource provider node into the tail block as the previous owner node information.

In the resource transfer method provided by the exemplary embodiments of this disclosure, on the one hand, key information in each transfer process of the target resource is recorded in the blockchain. Based on the historical traceability and immutability of the blockchain, each transfer stage of the target resource can be truthfully recorded on the blockchain, and all records can be traced on the blockchain. Moreover, since the transfer records are jointly maintained by numerous node devices in the blockchain, tampering with the transfer records requires control of a majority of node devices, thus ensuring the fairness of the generated transfer records. This avoids problems such as falsifying the source of goods and inaccurate historical transaction information, and avoids information asymmetry caused by fraudulent orders or advertising effects, thereby increasing the buyer's trust in the seller. On the other hand, the first account can determine whether the second account has a need to acquire the target resource based on whether the target account information can be decrypted through the reserved private key data, thereby achieving the screening of users who truly have a need for resources. At the same time, even if others obtain the encrypted target account information, they cannot decrypt it without the private key data, thus avoiding the problem of target account information leakage. Furthermore, using smart contracts for escrow transactions can further accelerate the trust establishment process between the first and second accounts.

It should be noted that although the steps of the method in this disclosure are described in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additional or alternative steps may be omitted, multiple steps may be combined into one step, and/or a step may be broken down into multiple steps.

Furthermore, this example embodiment also provides a resource transfer device. This resource transfer device can be applied to nodes in a blockchain. Referring to Figure 11, the resource transfer device 1100 may include a public key issuance module 1110, a blockchain query module 1120, a target account acquisition module 1130, a resource transfer module 1140, and a block maintenance module 1150. Wherein:

The public key publishing module 1110 can be used to publish the public key data in a key pair in response to a publishing request from the first account;

The blockchain query module 1120 can be used to obtain the blockchain associated with the target resource, and each block on the blockchain contains the account information of the previous owner and the account information of the next owner of the target resource.

The target account acquisition module 1130 can be used to receive target account information encrypted by the second account using the public key data, and send the target account information to the first account;

The resource transfer module 1140 can be used to transfer the target resource to the target account in response to a transfer request from the first account; the target account is obtained by decrypting the target account information using the private key data in the key pair;

The block maintenance module 1150 can be used to generate new blocks as the tail block of the blockchain, write the information of the target account into the block preceding the tail block as the next owner account information, and write the information of the first account into the tail block as the previous owner account information.

In one exemplary embodiment of this disclosure, each block is written with resource identifier information of the target resource; the blockchain query module 1120 is specifically used to query according to the received input resource identifier, and take the block that matches the input resource identifier as the block on the blockchain associated with the target resource.

In one exemplary embodiment of this disclosure, after acquiring the blockchain associated with the target resource, the apparatus further includes:

The resource tracing module can be used to traverse backwards based on the previous owner account information written in each block on the blockchain, and take the last block traversed as the first target block; and determine the source of the target resource based on the owner account of the first target block.

In one exemplary embodiment of this disclosure, after acquiring the blockchain associated with the target resource, the apparatus further includes:

The ownership confirmation module can be used to traverse backwards based on the next owner account information written in each block on the blockchain, and take the last block traversed as the second target block; and determine whether the first account owns the target resource based on whether the owner account of the second target block is consistent with the first account.

In one exemplary embodiment of this disclosure, the apparatus further includes:

The token issuance module can be used to determine whether the first account owns the target resource after receiving a token acquisition request from the first account; and when it is determined that the first account owns the target resource, to issue randomly generated token information to the first account through a third-party certification authority, so that the first account can carry the token information when transferring the target resource to the target account.

In one exemplary embodiment of this disclosure, the token issuance module determines whether the first account owns the target resource by the following steps: traversing backwards according to the next owner account information written in each block on the blockchain, and taking the last block traversed as the second target block; determining whether the first account owns the target resource based on whether the owner account of the second target block is consistent with the first account.

In one exemplary embodiment of this disclosure, the resource transfer module 1140 transfers the target resource to the target account through the following steps: generating a smart contract for indicating resource transfer conditions for transferring the target resource to the target account; and when the resource transfer conditions indicated by the smart contract are detected, transferring the target resource to the target account based on the smart contract.

In one exemplary embodiment of this disclosure, each block on the blockchain is written with the characteristic information of the target resource; the apparatus further includes:

The resource feature verification module can be used to verify the consistency between the resource feature information uploaded by the target account and the feature information written in the block, so as to confirm whether the resource obtained by the target account is the target resource.

In one exemplary embodiment of this disclosure, the feature information includes hash feature information obtained by hashing the feature data of the target resource.

The specific details of each module or unit in the above-mentioned resource transfer device have been described in detail in the corresponding resource transfer method, so they will not be repeated here.

It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

Figure 12 shows a schematic diagram of a computer system suitable for implementing embodiments of the present disclosure. It should be noted that the computer system 1200 of the electronic device shown in Figure 12 is merely an example and should not impose any limitations on the functionality and scope of the embodiments of the present disclosure.

As shown in Figure 12, the computer system 1200 includes a central processing unit (CPU) 1201, which can perform various appropriate actions and processes based on programs stored in read-only memory (ROM) 1202 or programs loaded from storage section 1208 into random access memory (RAM) 1203. The RAM 1203 also stores various programs and data required for system operation. The CPU 1201, ROM 1202, and RAM 1203 are interconnected via bus 1204. An input/output (I/O) interface 1205 is also connected to bus 1204.

The following components are connected to I/O interface 1205: an input section 1206 including a keyboard, mouse, etc.; an output section 1207 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 1208 including a hard disk, etc.; and a communication section 1209 including a network interface card such as a LAN card, modem, etc. The communication section 1209 performs communication processing via a network such as the Internet. A drive 1210 is also connected to I/O interface 1205 as needed. Removable media 1211, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 1210 as needed so that computer programs read from them can be installed into storage section 1208 as needed.

In particular, according to embodiments of this disclosure, the processes described below with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 1209, and/or installed from removable medium 1211. When the computer program is executed by central processing unit (CPU) 1201, it performs various functions defined in the methods and apparatus of this application. In some embodiments, computer system 1200 may also include an AI (Artificial Intelligence) processor for processing computational operations related to machine learning.

It should be noted that the computer-readable medium disclosed herein may be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium may be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media can also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

The units described in the embodiments of this disclosure can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the unit itself.

It should be understood that other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the scope of this disclosure is limited only by the appended claims.

Claims (15)

1. A resource transfer method based on blockchain, characterized in that it includes: In response to the first account's release request, the public key data of a key pair and the target resource sale information are released. Obtain the blockchain associated with the target resource, wherein each block on the blockchain contains the account information of the previous owner and the account information of the next owner of the target resource; The system receives target account information encrypted by the second account using the public key data, and sends the target account information to the first account. The target account information is sent by the second account after verifying the source information of the target resource and the ownership information of the target resource by the first account based on the acquired blockchain. In response to a transfer request from the first account, the target resource is transferred to the target account; the target account is obtained by decrypting the target account information using the private key data in the key pair. A new block is generated as the tail block of the blockchain, and the information of the target account is written into the block preceding the tail block as the next owner account information, and the information of the first account is written into the tail block as the previous owner account information. 2. The resource transfer method according to claim 1, characterized in that each block is written with resource identifier information of the target resource; obtaining the blockchain associated with the target resource includes: The query is performed based on the received input resource identifier, and the block that matches the input resource identifier is taken as the block on the blockchain associated with the target resource. 3. The resource transfer method according to claim 1, characterized in that, after obtaining the blockchain associated with the target resource, the method further includes: The blockchain is traversed backwards based on the previous owner's account information written in each block, and the last block encountered is taken as the first target block. The source of the target resource is determined based on the owner account of the first target block. 4. The resource transfer method according to claim 1, characterized in that, after obtaining the blockchain associated with the target resource, the method further includes: Based on the next owner account information written in each block on the blockchain, the blockchain is traversed backward, and the last block encountered is taken as the second target block. Whether the first account owns the target resource is determined based on whether the owner account of the second target block is the same as the first account. 5. The resource transfer method according to claim 4, characterized in that the method further comprises: When it is determined that the first account owns the target resource, a randomly generated token is issued to the first account through a third-party authentication authority, so that the first account can carry the token when transferring the target resource to the target account. 6. The resource transfer method according to claim 1, characterized in that, the step of transferring the target resource to the target account in response to a transfer request from the first account includes: Generate a smart contract that indicates the resource transfer conditions for transferring the target resource to the target account; When resource transfer conditions that meet the instructions of the smart contract are detected, the target resource is transferred to the target account based on the smart contract. 7. The resource transfer method according to any one of claims 1 to 6, characterized in that each block on the blockchain is written with the characteristic information of the target resource; the method further includes: The consistency of the resource feature information uploaded by the target account with the feature information written in the block is verified to confirm whether the resource obtained by the target account is the target resource. 8. The resource transfer method according to claim 7, wherein the feature information includes hash feature information obtained by hashing the feature data of the target resource. 9. The resource transfer method according to claim 8, characterized in that the method further comprises: After transferring the target resources to the target account, the resource transfer information of the first account is recorded to the blockchain network via a smart contract; and Upon receiving a query request for querying the resource transfer history of the first account, the resource transfer information of the first account is obtained from the blockchain network as the query result. 10. A resource transfer method, the method being applied to a blockchain system, the blockchain system comprising a blockchain database, transaction nodes, resource providing nodes, and resource requesting nodes, characterized in that the method comprises: The transaction node responds to the resource provider node's publishing request by publishing the public key data of a key pair and the target resource for sale information; The transaction node obtains the blockchain associated with the target resource from the blockchain database. Each block on the blockchain contains the account information of the previous owner and the account information of the next owner of the target resource. The resource requesting node sends the target node information, encrypted with the public key data, to the resource providing node through the transaction node; the target node information is sent by the provider of the target node information after verifying the source information of the target resource and the ownership information of the first account for the target resource based on the obtained blockchain. The transaction node responds to the transfer request from the resource provider node by transferring the target resource to the target node; the target node is obtained by decrypting the target node information using the private key data in the key pair; The blockchain database generates a new block as the tail block of the blockchain, and writes the information of the target node into the block preceding the tail block as the next owner account information, and writes the information of the resource providing node into the tail block as the previous owner account information. 11. The resource transfer method according to claim 10, characterized in that, the transaction node transfers the target resource to the target node in response to the transfer request of the resource providing node, comprising: The transaction node generates a smart contract to indicate the resource transfer conditions for transferring the target resource to the target node, and when the resource transfer conditions indicated by the smart contract are detected, the target resource is transferred to the target node based on the smart contract. 12. The resource transfer method according to claim 10 or 11, wherein the blockchain system further includes a third-party certification authority; the method further includes: When it is determined that the resource provider node possesses the target resource, the third-party certification authority issues randomly generated token information to the resource provider node; The resource provider node carries the token information when transferring the target resource to the target node. 13. A resource transfer device, characterized in that it comprises: The public key publishing module is used to publish the public key data and target resource sale information in a key pair in response to the publishing request of the first account; The blockchain query module is used to obtain the blockchain associated with the target resource. Each block on the blockchain contains the account information of the previous owner and the account information of the next owner of the target resource. The target account acquisition module is used to receive target account information encrypted by the second account using the public key data, and send the target account information to the first account; the target account information is sent by the second account after verifying the source information of the target resource and the ownership information of the target resource by the first account based on the acquired blockchain. The resource transfer module is used to transfer the target resource to the target account in response to a transfer request from the first account; the target account is obtained by decrypting the target account information using the private key data in the key pair; The block maintenance module is used to generate new blocks as the tail block of the blockchain, and to write the information of the target account into the block preceding the tail block as the next owner account information, and to write the information of the first account into the tail block as the previous owner account information. 14. A computer-readable storage medium having a computer program stored thereon, characterized in that the computer program, when executed by a processor, implements the method according to any one of claims 1-12. 15. An electronic device, characterized in that it comprises: Processor; and Memory for storing the executable instructions of the processor; The processor is configured to execute the method of any one of claims 1-12 by executing the executable instructions.