CN109840780B - Agricultural product information maintenance method, device and system - Google Patents

Agricultural product information maintenance method, device and system Download PDF

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CN109840780B
CN109840780B CN201910114228.6A CN201910114228A CN109840780B CN 109840780 B CN109840780 B CN 109840780B CN 201910114228 A CN201910114228 A CN 201910114228A CN 109840780 B CN109840780 B CN 109840780B
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agricultural product
ownership
node
party
intelligent contract
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CN109840780A (en
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李子杨
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Chongqing Jinvovo Network Technology Co ltd
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Chongqing Jinvovo Network Technology Co ltd
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Abstract

The application provides an agricultural product information maintenance method, an agricultural product information maintenance device and an agricultural product information maintenance system, wherein a receiver node belonging to an agricultural product ownership receiver in a block chain sends an uploading request of an intelligent contract to the block chain after acquiring the intelligent contract for restricting the transaction of an agricultural product, so that the intelligent contract is stored in the block chain after the node in the block chain verifies the intelligent contract; meanwhile, after the quality of the agricultural product is confirmed to be qualified, a contract validation instruction is sent to the blockchain, the contract validation instruction is used for instructing the nodes in the blockchain to set the state of the intelligent contract to be a validation state, and the ownership of the agricultural product is recorded to be transferred to the receiving party. The method and the device provide possibility for reliably monitoring the agricultural product information of each link in agricultural product circulation, and are favorable for reliably acquiring the relevant information of agricultural products.

Description

Agricultural product information maintenance method, device and system
Technical Field
The application relates to the technical field of block chains, in particular to a method, a device and a system for maintaining agricultural product information.
Background
With the continuous improvement of living standard of people, people pay more and more attention to the quality, safety and other relevant agricultural product information of agricultural products.
The agricultural products from production to sale may involve multiple links of planting by agricultural companies, purchasing by purchasing companies, transporting by transportation companies, and selling by agricultural product selling companies. The quality, safety and the like of agricultural products are related to each link, and the information of the agricultural products is changed when problems occur in each link. Therefore, how to realize reliable supervision of agricultural product information in each link in agricultural product circulation so as to be beneficial to improving the quality and safety of agricultural products is a technical problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
In view of this, the present application provides a method, an apparatus, and a system for maintaining agricultural product information, so as to reliably obtain agricultural product information of each link in agricultural product circulation, and facilitate reliable supervision of agricultural product information of each link in agricultural product circulation.
In order to achieve the above purpose, the present application provides the following solutions:
an agricultural product information maintenance method is applied to a receiver node belonging to an agricultural product ownership receiver in a blockchain, wherein the blockchain comprises at least three nodes, and the at least three nodes comprise the receiver node and a transfer node of an agricultural product ownership transfer party, and the method comprises the following steps:
obtaining an intelligent contract for constraining an agricultural product transaction, the intelligent contract having recorded thereon at least: identification information of an agricultural product to be subjected to ownership transfer, agricultural product information related to the agricultural product, identification information of an agricultural product ownership receiving party and identification information of an agricultural product ownership transferring party;
sending an upload request of the intelligent contract to the blockchain so as to store the intelligent contract in the blockchain after other nodes except the receiver node and the transfer node in the blockchain verify the intelligent contract;
after the quality of the agricultural product is qualified, sending a contract validation instruction to the blockchain, wherein the contract validation instruction is used for instructing nodes in the blockchain to set the state of the intelligent contract to a validation state, and recording that the ownership of the agricultural product is transferred to the receiving party.
Preferably, the at least three nodes further comprise: a supervisor node maintained by a supervisor;
the method further comprises the following steps:
and under the condition that the quality of the agricultural product is confirmed to be unqualified, sending a quality unqualified indication aiming at the agricultural product to the supervisor node, so that the supervisor node responds to the quality unqualified indication, determines a distrusted party with dishonest behavior from a plurality of participants participating in ownership transfer of the agricultural product, and stores a dishonest record of the dishonest party into the blockchain, wherein the participants at least comprise the agricultural product ownership receiving party and the agricultural product ownership transferring party.
Preferably, the agricultural product information associated with the agricultural product includes: attribute information of the agricultural product and quality information of the agricultural product;
the intelligent contract further records authority provisions for constraining the agricultural product ownership receiver and the agricultural product ownership transferor;
the intelligent contract also carries a signature of the agricultural product ownership receiver and a signature of the agricultural product ownership transfer party, and the signature of the agricultural product ownership receiver is generated by using a private key of the agricultural product ownership receiver in the block chain; the signature of the agricultural product ownership transferor is generated using a private key of the agricultural product ownership transferor in the blockchain.
In another aspect, the present application further provides an agricultural product information maintenance system, including:
a blockchain formed from a plurality of nodes, the plurality of nodes including at least: a transferor node belonging to an agricultural product ownership transferor, a receiver node belonging to an agricultural product ownership receiver, and a supervisor node maintained by a supervisor unit;
wherein, the receiving party node and the transferring party node are used for obtaining an intelligent contract used for restricting the agricultural product transaction, and the intelligent contract at least records: identification information of an agricultural product to be subjected to ownership transfer, agricultural product information related to the agricultural product, identification information of an agricultural product ownership receiving party and identification information of an agricultural product ownership transferring party;
the receiver node or the transfer party node is also used for sending an uploading request of the intelligent contract to the blockchain;
the other nodes except the receiver node and the transfer node in the block chain are used for responding to the uploading request of the intelligent contract and storing the intelligent contract in the block chain after the intelligent contract is verified;
the receiver node is further configured to send a contract validation instruction to the blockchain after the quality of the agricultural product is qualified, where the contract validation instruction is used to instruct a node in the blockchain to set the state of the intelligent contract to a validation state, and record that the ownership of the agricultural product is transferred to the agricultural product ownership receiver.
Preferably, the node in the blockchain is further configured to store an ownership transfer record for recording that the ownership of the agricultural commodity is transferred from the agricultural commodity ownership transfer party to the agricultural commodity ownership receiving party after receiving the contract validation indication.
Preferably, the receiver node is further configured to send an unqualified quality indication for the agricultural product to a supervisor node in the block chain under the condition that the quality of the agricultural product is determined to be unqualified;
the supervisor node is configured to determine, in response to the quality failure indication, a distrusted party with dishonest behavior from a plurality of parties involved in the ownership transfer of the agricultural product, and store a dishonest record of the distrusted party into the blockchain, where the plurality of parties include at least the agricultural product ownership receiver and the agricultural product ownership transfer party.
Preferably, when determining that a distrusted party with dishonest behavior exists among the multiple parties participating in the ownership transfer of the agricultural product, the supervisor node is specifically configured to determine the multiple parties participating in the ownership transfer of the agricultural product according to the stored ownership transfer record of the agricultural product; obtaining a quality detection result of the quality of the agricultural product detected by the monitoring party; and determining a distrusted party with dishonest behavior from the plurality of parties according to the quality detection result.
Preferably, the block chain includes: a supervisor node maintained by a supervisor unit, a planting party node maintained by an agricultural product planting enterprise, a purchasing party node maintained by an agricultural product purchasing enterprise, a transporting party node maintained by an agricultural product transporting enterprise, and a selling party node maintained by an agricultural product selling enterprise;
wherein, in case that the agricultural product ownership transfer party is the agricultural product planting enterprise, the transfer party node is the planting party node, the agricultural product ownership receiving party is the agricultural product purchasing enterprise, and the receiving party node is the purchasing party node;
under the condition that the agricultural product ownership transfer party is the agricultural product purchasing enterprise, the transfer party node is a purchasing party node, the agricultural product ownership receiving party is the agricultural product transportation enterprise, and the receiving party node is the transportation party node;
and under the condition that the agricultural product ownership transfer party is the agricultural product transportation enterprise, the transfer party node is a transportation party node, the agricultural product ownership receiving party is the agricultural product sales enterprise, and the receiving party node is the seller node.
Preferably, the method further comprises the following steps: the terminal is used for sending an information query request to the nodes in the block chain, wherein the information query request carries the identification information of the target agricultural product to be queried;
and the nodes in the block chain are further used for acquiring agricultural product information related to the target agricultural product and ownership transfer records of the target agricultural product according to the identification information of the target agricultural product when the information query request is received.
In another aspect, the present application further provides an agricultural product information maintenance apparatus, which is applied to a receiver node belonging to an agricultural product ownership receiver in a blockchain, where the blockchain includes at least three nodes, and the at least three nodes include the receiver node and a transfer node of an agricultural product ownership transfer party, and the apparatus includes:
a contract obtaining unit for obtaining an intelligent contract for restricting the transaction of the agricultural product, the intelligent contract having recorded thereon at least: identification information of an agricultural product to be subjected to ownership transfer, agricultural product information related to the agricultural product, identification information of the agricultural product ownership receiving party and identification information of the agricultural product ownership transferring party;
a contract uploading unit, configured to send an upload request of the intelligent contract to the blockchain, so as to store the intelligent contract in the blockchain after other nodes except the receiver node and the transfer node in the blockchain verify the intelligent contract;
and the contract validation unit is used for sending a contract validation instruction to the blockchain after the quality of the agricultural product is qualified, wherein the contract validation instruction is used for instructing the nodes in the blockchain to set the state of the intelligent contract to be a validation state, and recording that the ownership of the agricultural product is transferred to the receiving party.
Therefore, in the embodiment of the application, in the process of generating the ownership transfer of the agricultural product, the receiver node belonging to the receiver of the ownership of the agricultural product in the block chain acquires the intelligent contract for restricting the transaction of the agricultural product and uploads the intelligent contract to the block chain, and other nodes in the block chain store the intelligent contract after the intelligent contract passes the verification, so that each node in the block chain supervises the intelligent contract in the ownership transfer process of the agricultural product, and the safety and the reliability of the information of the agricultural product related to the agricultural product recorded in the intelligent contract are ensured.
And the receiving node triggers the intelligent contract to take effect after confirming that the quality of the agricultural product is qualified, and enables the node in the block chain to record the transfer state of the ownership of the agricultural product, so that the safety and reliability of the quality of the agricultural product are guaranteed, and the agricultural product information, ownership transfer and other related data in the circulation process of the agricultural product can be safely and reliably obtained through the block chain.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the provided drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating an architecture of an agricultural product information maintenance system according to an embodiment of the present application;
FIG. 2 shows a schematic representation of an all-trans-harvest produce according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of an agricultural product information maintenance method according to an embodiment of the present application;
FIG. 4 is a flow interaction diagram illustrating an agricultural product information maintenance method according to an embodiment of the present application;
fig. 5 is a schematic view illustrating a flow interaction of an agricultural product information maintenance method in an application scenario according to an embodiment of the present application;
fig. 6 is a schematic structural diagram illustrating a structure of an agricultural product information maintenance apparatus according to an embodiment of the present application.
Detailed Description
In order to facilitate understanding of the solution of the present application, a system to which the solution of the present application is applied will be described below. For example, referring to fig. 1, a schematic diagram of a component architecture of an agricultural product information maintenance system of the present application is shown.
As can be seen from fig. 1, the system comprises: a plurality of nodes 101 that make up a block chain.
At least comprising in the plurality of nodes: the system comprises a supervisor node serving as a supervisor unit of an information supervisor in a block chain, a transfer node currently serving as unit maintenance of an agricultural product ownership transfer party, and a receiving node currently serving as unit maintenance of an agricultural product ownership receiving party.
The unit of the supervision party may be a unit or an enterprise approved by the maintainer of the plurality of nodes, for example, the unit of the supervision party may be a quality supervision authority or the like.
The agricultural product ownership transfer party refers to a party needing to transfer the ownership of the agricultural product to other units or enterprises. The agricultural product ownership receiving party is a party for obtaining the agricultural product from the agricultural product ownership transferring party to obtain the ownership of the agricultural product. For example, an agricultural product planting enterprise can sell a planted agricultural product to an agricultural product purchasing enterprise, and in the process, the agricultural product planting enterprise is used as an agricultural product ownership transfer party, and the agricultural product purchasing enterprise is an agricultural product ownership receiving party corresponding to the agricultural product planting enterprise.
It will be appreciated that the distribution of produce from planting or farming to final sale to the consumer may vary, and therefore, the number and variety of participants involved in the distribution of produce may vary. The nodes maintained by the participants all belong to the nodes in the blockchain, and as can be seen, the blockchain may include a plurality of nodes, but the number of the nodes in the blockchain may also be different according to different circulation links involved in the agricultural product flow.
For example, in one possible scenario, the agricultural product may be planted (or cultivated) by an agricultural product planting enterprise, purchased by an agricultural product purchasing enterprise, transported by an agricultural product transporting enterprise, and sold by an agricultural product selling enterprise. In this case, the block chain includes at least: a supervisor node maintained by a supervisor unit, a planter node maintained by an agricultural planting enterprise, a buyer node maintained by an agricultural purchasing enterprise, a transporter node maintained by an agricultural shipping enterprise, and a seller node maintained by an agricultural sales enterprise.
As shown in fig. 2, a schematic diagram of an agricultural product ownership transfer is shown.
As can be seen from fig. 2, in the case where the agricultural product ownership transfer party is an agricultural product planting enterprise, the transfer party node is a planter node. Correspondingly, the agricultural product planting enterprise transfers the ownership of the agricultural product to the agricultural product purchasing enterprise, so that the agricultural product ownership receiving party is the agricultural product purchasing enterprise, and the receiving party node is the purchasing party node.
Similarly, in the case where the agricultural product ownership transfer party is an agricultural product purchasing enterprise, the transfer party node is a purchasing party node. Correspondingly, the agricultural product ownership receiving party corresponding to the agricultural product ownership transferring party is an agricultural product transportation enterprise, and therefore, the receiving party node is the transportation party node.
In the case that the agricultural product ownership transfer party is an agricultural product transportation enterprise, the transfer party node is a transportation party node. Accordingly, the agricultural product ownership receiver is an agricultural product sales enterprise, and the receiver node is a seller node.
It is understood that fig. 2 is only one possible case of ownership transfer of agricultural products, and in practical applications, more or fewer participants may be involved in the agricultural product circulation process than in fig. 2, which is not limited in the present application.
In the embodiment of the present application, a plurality of nodes in the block chain form a federation chain with the supervisor node. It will be appreciated that each node needs to apply for registration with the policer node before joining the blockchain. When a node applies for a registration block chain from a supervisor node, the node can carry the relevant information of the enterprise to which the node belongs and send the information to the supervisor node, for example, the operation condition of the enterprise, the quality condition of agricultural products managed by the enterprise, and the like are sent to the supervisor node. Correspondingly, the supervisor node can evaluate and verify the enterprise according to the enterprise information sent by the enterprise side node, and distribute the public key and the private key of the enterprise side in the blockchain to the enterprise side after the enterprise side is qualified in evaluation.
The public keys and the private keys distributed by the supervisor node to the enterprise sides to which the different nodes belong are different.
It can be understood that there are various specific ways for the supervisor node to generate and send the public key and the private key of the enterprise side to the node of the enterprise side, and the application does not limit this.
In the embodiment of the application, each node in the block chain can record and maintain the related data of the agricultural products involved in the agricultural product circulation process. For example, relevant data corresponding to the agricultural product identification information representing different batches of agricultural products is recorded.
It can be appreciated that digital informatization is implemented to facilitate management of data for different batches of agricultural products. In the embodiment of the application, after the agricultural products are planted, the agricultural product planting enterprise can also apply for the two-dimensional code identification of each batch of agricultural products to the supervisor node. A supervisor to which the supervisor node belongs can check the quality of agricultural product planting and cultivation devices, and after the fact that relevant standard conditions are met is confirmed, two-dimensional code information such as two-dimensional code identification of agricultural products in corresponding batches can be generated through the supervisor node.
Optionally, the agricultural product information maintenance system according to the embodiment of the present application may further include: a plurality of terminals 102, each of which may be connected to at least one node in the blockchain via a network. The terminal can be provided with and run with an application program for realizing access to the block chain, and can log in a certain node in the block chain and access data stored in the block chain through the application program, so that related data in the agricultural product circulation process can be acquired.
In the embodiment of the present application, the block chain may be a federation chain. Accordingly, each node in the blockchain stores relevant data for a federation chain-based correlation protocol.
With reference to the above description of the system, the agricultural product information maintenance method according to the embodiment of the present application is described below. Introduction is first performed from the side of a receiver node belonging to an agricultural product ownership receiver in a blockchain.
For example, referring to fig. 3, which shows a schematic flow chart of an embodiment of an agricultural product information maintenance method according to the present application, the method of the present embodiment is applied to the above-mentioned receiving node, and the method may include the following steps:
s301, obtaining an intelligent contract used for restricting the transaction of the agricultural product.
An intelligent contract is a computer protocol that aims to propagate, verify or execute contracts in an informational manner. Smart contracts allow trusted transactions to be conducted without third parties, which transactions are traceable and irreversible.
In this embodiment, the contracting party of the intelligent contract is an agricultural product ownership receiving party and an agricultural product ownership transferring party. Thus, an intelligent contract may be ultimately generated and determined based on the interaction between the receiver node and the transferor node. Accordingly, in this embodiment, obtaining the intelligent contract may be obtaining an intelligent contract that is finally determined by the receiver node and the transferor node.
The intelligent contract at least records: the agricultural product ownership transfer method comprises the steps of identification information of an agricultural product to be subjected to ownership transfer, agricultural product information related to the agricultural product, identification information of an agricultural product ownership receiving party and identification information of an agricultural product ownership transfer party.
Wherein the agricultural commodity to which ownership is to be transferred may be a batch of agricultural commodities that need to be transferred from one enterprise party to another enterprise party.
Wherein the identification information of the agricultural product is used for uniquely identifying the agricultural product.
Optionally, in this embodiment of the application, in order to facilitate supervision of the agricultural product, a supervisor may allocate, to the agricultural product, two-dimensional code information for identifying the agricultural product in advance through a supervisor node.
The agricultural product associated agricultural product information may include: attribute information of the agricultural product and quality information of the agricultural product.
The attribute information of the agricultural product may include planting party information of the agricultural product, for example, enterprise information of a planting enterprise planting the agricultural product; the method can also comprise information such as the producing area and the planting environment of the agricultural product, and certainly, the attribute information of the agricultural product can also comprise related information such as the efficacy and the nutritional value of the agricultural product.
The quality condition of the agricultural product may include a quality grade of the agricultural product, and the like.
Of course, the specific content included in the agricultural product information may also have other possibilities, which are not limited herein.
The identification information of the agricultural product ownership receiver is used for uniquely identifying the agricultural product ownership receiver. If the agricultural product ownership receiving party is an agricultural product sales company, the identification information may be a unique identification such as a company name and a trademark of the agricultural product sales company. Optionally, it is considered that each node in the block chain allocates a public key in the block chain to the unit to which the node belongs, and therefore, the identification information of the agricultural product ownership receiver may be the public key of the agricultural product ownership receiver.
Accordingly, the identification information of the agricultural product ownership transfer party is used for uniquely identifying the agricultural product ownership transfer party. For example, the identification information may be information such as a company name, a trademark, or a public key.
It is understood that the intelligent contract is used for defining some related constraint information in the agricultural product ownership transfer, so that in order to define a responsible party for dispute when the agricultural product ownership receiving party has disputes with the agricultural product ownership transferring party, the intelligent contract also records the authority provisions for constraining the agricultural product ownership receiving party and the agricultural product ownership transferring party. For example, the rights provision may include penalties for default, legal terms, and the like.
Optionally, in order to ensure the authenticity and reliability of the identities of the two parties signing the intelligent contract, the intelligent contract further carries the signature of the agricultural product ownership receiver and the signature of the agricultural product ownership transfer party. The signature of the agricultural product ownership receiver is generated by using a private key of the agricultural product ownership receiver in the block chain; the signature of the agricultural product ownership transferor is generated using a private key of the agricultural product ownership transferor in the blockchain.
And when the private keys of the agricultural product ownership receiving party and the agricultural product ownership transferring party are added into the block chain for the nodes of the agricultural product ownership receiving party and the agricultural product ownership transferring party, the private keys are respectively distributed to the agricultural product ownership receiving party and the agricultural product ownership transferring party by the monitoring party node of the monitoring party. The signature is carried out through the private key, so that the signature can be prevented from being forged, and the reliability and the authenticity of the signature are ensured.
S302, sending an upload request of the intelligent contract to the blockchain, so that after the other nodes except the receiver node and the transfer node in the blockchain verify the intelligent contract, the intelligent contract is stored in the blockchain.
Wherein the uploading request is used for requesting to store the intelligent contract into the block chain.
In the embodiment of the application, before the intelligent contract is stored in the block chain, other nodes except the node for formulating the intelligent contract in the block chain are required to verify the intelligent contract, so that the authenticity and the validity of the information recorded in the intelligent contract are ensured, and the quality of agricultural products is favorably ensured.
Accordingly, the receiver node may only send the upload request to the receiver node and other nodes in the blockchain than the transferor node. Of course, the receiver node may also send the upload request to all nodes in the block chain, but after receiving the upload request, the transfer node does not perform corresponding processing.
And for any node except the receiver node and the transfer node in the block chain, responding to the uploading request of the intelligent contract, and storing the intelligent contract in the block chain after the intelligent contract is verified.
Specifically, after the node receives an upload request for uploading the intelligent contract, a verification prompt may be output to prompt the user to verify the intelligent contract. For example, the enterprise side or the monitoring side to which the node belongs may verify the agricultural product information and quality in the intelligent contract, and upload the verification result to the node, so that the node obtains the verification result.
Data is stored into the blockchain based on a consensus mechanism considering that each node in the blockchain is. Therefore, in the embodiment of the present application, after the intelligent contract is verified, the node may store the intelligent contract into the blockchain based on the consensus mechanism.
In this embodiment of the present application, the intelligent contract may be identified and verified by other nodes except the receiver node and the transfer node in the blockchain, and if the number or the ratio of the nodes that pass the verification in all other nodes exceeds the preset threshold, all other nodes reach a consensus, so that all other nodes may also store the intelligent contract.
In this embodiment, the consensus verification may be: consensus verification using voting. Specifically, after each node verifies the intelligent contract, if the node passes the verification, the node may send a voting indication to other nodes except the node, where the voting indication is used to characterize that the node passes the verification of the intelligent contract. Correspondingly, if the ratio of the number of voting instructions received by the node to the total number of the nodes exceeds a preset threshold, the verification is considered to be passed, and on the basis, each node in the block chain stores the intelligent contract.
Optionally, if the receiving party node and other nodes except the transferring party node in the block chain confirm that the intelligent contract is not verified based on the consensus mechanism, the supervisor node in the block chain further instructs the supervisor to perform problem analysis on the intelligent contract when confirming that the intelligent contract is not verified, so that the supervisor node can obtain an analysis result input by the supervisor and upload the analysis result to the block chain.
The analysis result can be detected through the intelligent contract and the quality of the agricultural product, a distrusted party with the dishonest behavior is determined from all the participating parties involved in the transfer of the ownership of the agricultural product, and the distrusted party and the dishonest behavior of the distrusted party are uploaded to the block chain.
It should be noted that, in the embodiment of the present application, an example in which the receiving node sends the upload request of the intelligent contract to the blockchain is taken as an example for description, but it may be understood that, because both the receiving node and the transferring node have the intelligent contract, in the embodiment of the present application, the transferring node may also send the upload request of the intelligent contract to the blockchain. In this case, the processing procedure of the nodes in the block chain is similar, which may specifically refer to the introduction of step S302 and is not described herein again.
And S303, after the quality of the agricultural product is qualified, sending a contract validation instruction to the block chain.
Wherein sending the contract-effective indication to the blockchain is actually sending the contract-effective indication to each node in the blockchain.
Wherein the contract validation instruction is used for instructing the nodes in the block chain to set the state of the intelligent contract to be a validation state and recording the ownership transfer of the agricultural product to the receiving party.
It can be understood that, when the intelligent contract is uploaded to the block chain, the intelligent contract is not in effect, only after the quality of the agricultural product is verified to be qualified by the agricultural product ownership receiver and the agricultural product quality is indicated to be qualified by the receiver node, the receiver node confirms that the intelligent contract is in effect, and at the same time confirms that the agricultural product is received, and the transfer of the agricultural product ownership to the receiver of the agricultural product ownership is realized.
Correspondingly, the node in the blockchain is also used for storing an ownership transfer record for recording that the agricultural product ownership is transferred from the agricultural product ownership transfer party to the agricultural product ownership receiving party after receiving the contract validation indication. If the ownership of agricultural M is transferred from Enterprise A to Enterprise B, the ownership transfer record will record: agricultural products M: enterprise a moves to enterprise B. Thus, a transfer record of ownership of the agricultural product may be obtained by querying the blockchain.
It can be understood that, according to the embodiment of the present application, each time the ownership of the agricultural product is transferred, the receiving node that receives the ownership of the agricultural product stores the intelligent contract and the ownership transfer information involved in the ownership transfer process into the block chain. Therefore, the information related to each ownership transfer of the agricultural product can be stored in the block chain, and therefore the quality, ownership receivers and other related information of the agricultural product in each link in the agricultural product circulation process can be acquired by inquiring the block chain.
It can be seen that, in the embodiment of the present application, in the process of generating an agricultural product ownership transfer, a receiver node belonging to an agricultural product ownership receiver in a block chain may obtain an intelligent contract for restricting an agricultural product transaction, and upload the intelligent contract to the block chain, and after the other nodes in the block chain pass the verification of the intelligent contract, the intelligent contract may be stored, so that each node in the block chain supervises the intelligent contract in the agricultural product ownership transfer process, and the security and reliability of the agricultural product information related to the agricultural product recorded in the intelligent contract are ensured.
And the receiving node triggers the intelligent contract to take effect after confirming that the quality of the agricultural product is qualified, and enables the node in the block chain to record the transfer state of the ownership of the agricultural product, so that the safety and reliability of the quality of the agricultural product are guaranteed, and the agricultural product information, ownership transfer and other related data in the circulation process of the agricultural product can be safely and reliably obtained through the block chain.
In addition, the node in the block chain can also relate to the quality verification of the agricultural product with the ownership to be transferred in the process of verifying the intelligent contract, and the intelligent contract can be uploaded only after the verification is passed, so that the safety and reliability of the quality of the agricultural product are further ensured.
It can be understood that, in order to determine the responsible party causing the quality of the agricultural product to be unqualified in time when the quality of the agricultural product is unqualified, the receiving party node can also send an indication aiming at the quality of the agricultural product to the supervisor node in the block chain when the receiving party node determines that the quality of the agricultural product is unqualified. The quality fail indication is used to indicate that the quality of the agricultural product to which ownership is to be transferred is not qualified by the inspection.
Accordingly, the supervisor node, in response to the quality fail indication, determines a distressed party having dishonest behavior from the plurality of parties involved in the transfer of ownership of the agricultural commodity and stores a dishonest record of the distressed party into the blockchain.
Wherein the plurality of participants includes at least the agricultural product ownership recipient and the agricultural product ownership transfer party. It can be understood that, in the agricultural product circulation process, the agricultural product ownership receiving party and the agricultural product ownership transferring party in different links are different. Therefore, if a dishonest behavior exists between the agricultural product ownership receiving party and the agricultural product ownership transferring party in a certain link, and the quality of the agricultural product does not meet the requirement, the agricultural product ownership receiving party in the next link can also detect that the quality of the agricultural product is not qualified in the subsequent agricultural product ownership transferring process, and under the condition, the distrusted party with the dishonest behavior may not be the agricultural product ownership receiving party and the agricultural product ownership transferring party in the ownership transferring link.
For example, referring to fig. 4, which shows a schematic flow interaction diagram of an agricultural product information maintenance system according to the present application, this embodiment may include the following steps:
s401, a receiver node of the agricultural product ownership receiver obtains an intelligent contract used for restricting the agricultural product transaction between the agricultural product ownership receiver and the agricultural product ownership transfer party.
The intelligent contract can record identification information of the agricultural product to be transferred, such as two-dimensional code information of the agricultural product; the agricultural product information related to the agricultural product, such as attribute information of the agricultural product, quality information of the agricultural product and the like, can also be recorded. Meanwhile, the intelligent contract also records the identification information of the agricultural product ownership receiving party and the identification information of the agricultural product ownership transferring party.
Of course, the intelligent contract may also use a quality constraint rule between the agricultural product ownership receiving party and the agricultural product ownership transferring party, a signature of the agricultural product ownership receiving party generated by using the private key of the agricultural product ownership receiving party, a signature of the agricultural product ownership transferring party generated by using the private key of the agricultural product ownership transferring party, and the like. Specifically, reference may be made to the related descriptions of the foregoing embodiments, which are not described in detail herein.
S402, the receiving node sends an upload request for uploading the intelligent contract to the blockchain.
And S403, responding to the uploading request by the nodes except the receiver node and the sender node in the block chain, and storing the intelligent contract in the storage area belonging to the block chain in the node after the intelligent contract is verified.
The operations in step S402 and step S403 may refer to the related descriptions of the foregoing embodiments, and are not described herein again.
S404, the receiving node obtains the quality verification result of the agricultural product to be subjected to ownership transfer, and if the quality verification result represents that the quality of the agricultural product is qualified, the step S405 is executed; if not, step S407 is executed.
The quality verification result obtained by the receiver node may be determined by the agricultural product ownership receiver by checking the quality of the agricultural product, and the specific implementation process is not limited in this application. The quality verification result can represent whether the quality of the agricultural product is qualified or not, or whether the quality of the agricultural product is consistent with the quality required or described in the intelligent contract or the like.
It can be understood that, when the receiving node confirms that the quality of the agricultural product is qualified, the receiving node confirms that the quality verification of the agricultural product passes, and in this case, the intelligent contract can be triggered to take effect and the transfer of the ownership of the agricultural product is completed.
On the contrary, if the receiving node confirms that the quality of the agricultural product is unqualified, the receiving node does not trigger the intelligent contract to take effect so as to avoid damaging the ownership receiving party of the agricultural product. In this case. The receiver node also needs to feed back an indication of the quality failure to the supervisor node of the supervisor, so that the supervisor node finally determines the specific reason causing the quality failure and determines the responsible party causing the quality failure.
S405, the receiving node sends contract effective indication to each node in the block chain under the condition that the quality of the agricultural product is qualified.
And S406, after receiving the contract validation indication, the node in the blockchain sets the state of the intelligent contract to be a validation state, and stores an ownership transfer record for recording that the ownership of the agricultural product is transferred from the agricultural product ownership transfer party to the agricultural product ownership receiving party in the storage area belonging to the blockchain.
It can be understood that, in the case that the receiving node confirms that the quality of the agricultural product is qualified, the receiving node also sets the intelligent contract recorded in the storage area belonging to the block chain in the receiving node into an effective state, and records that the ownership of the agricultural product is transferred from the agricultural product ownership transferring party to the agricultural product ownership receiving party.
The above steps S405 and S406 are operations that need to be performed when the receiving node confirms that the quality of the agricultural product is qualified, and the content of the steps can also be referred to in the foregoing related description.
And S407, the receiving node sends an unqualified quality indication aiming at the agricultural product to the supervision node in the block chain under the condition of confirming that the quality of the agricultural product is unqualified.
S408, the supervisor node responds to the quality unqualified indication, determines a distrusted party with dishonest behavior from the multiple parties participating in the ownership transfer of the agricultural product, and stores a dishonest record of the distrusted party into the blockchain.
Wherein the plurality of participants includes at least the agricultural product ownership recipient and the agricultural product ownership transfer party.
In one implementation, the supervisor node may determine a plurality of participants participating in the ownership transfer of the agricultural commodity according to the stored ownership transfer record of the agricultural commodity; then, obtaining a quality detection result of the quality of the agricultural product detected by the monitoring party; and determining a distrusted party with dishonest behavior from the plurality of parties according to the quality detection result.
It can be understood that the intelligent contract generated by each ownership transfer of the agricultural product and the transfer party and the receiving party of the ownership of the agricultural product are stored in the blockchain, so that the supervisor can inquire out a plurality of participants participating in the ownership transfer of the agricultural product from the blockchain based on the ownership transfer record recorded in the blockchain. Then, by combining the intelligent contract signed in each agricultural product ownership transfer process and the quality detection of the agricultural product by the monitoring party, the intelligent contract in which link is abnormal can be comprehensively analyzed, or the quality problem of the agricultural product exists in which agricultural product ownership transfer link, and the like, so that the distrusted party with the dishonest behavior is finally determined from the multiple participants.
For example, the ownership of the agricultural products is transferred from the agricultural product planting enterprise S1 to the enterprise S2, the enterprise S2 needs to transfer the ownership of the agricultural products to the enterprise S3, and if the enterprise S2 detects that the quality problem of the agricultural products transferred by the enterprise S1 does not exist, in the process of transferring the agricultural products to the enterprise S3 by the enterprise S2, if the quality problem is detected by the enterprise S3, the node of the enterprise S3 can still send a quality non-conformity indication to the node of the supervision party, so that the supervision party can determine that a dishonest behavior exists between the enterprise S1 and the enterprise S2 according to an intelligent contract signed between the enterprise S1 and the enterprise S2 and the quality detection result of the enterprise S2.
It can be understood that, in the above embodiments of the present application, in order to enable a consumer to query detailed information of a purchased agricultural product so as to timely know quality security of the agricultural product, in this embodiment of the present application, the terminal may further send an information query request to a node in the blockchain, where the information query request carries identification information of a target agricultural product to be queried.
For example, under the condition that the agricultural product is identified by the two-dimensional code information, the terminal can scan the two-dimensional code information of the target agricultural product and send an information query request carrying the two-dimensional code information to the block link point.
Correspondingly, when receiving the information query request, the node in the block chain acquires the agricultural product information associated with the target agricultural product and the ownership transfer record of the target agricultural product according to the identification information (such as two-dimensional code information) of the target agricultural product, and sends the agricultural product information associated with the target agricultural product and the ownership transfer record to the terminal.
Of course, the nodes in the blockchain may also send information such as a quality detection result of the target agricultural product in each ownership transfer process to the terminal.
Therefore, after a consumer scans the two-dimensional code on the agricultural product by using the terminal or sends identification information of the agricultural product to be inquired to the blockchain in other modes, the quality and ownership transfer information in the circulation process of the agricultural product can be acquired from the blockchain, so that reliable information can be provided for the user, and the user can purchase safe and reliable agricultural products.
For convenience of understanding, the following description will take agricultural products as planted agricultural products, and assume that the agricultural products pass through agricultural product planting, agricultural product purchasing, agricultural product transportation, agricultural product sale and other links from planting to circulation.
In this case, the block link point may include: a supervisor node maintained by a supervisor unit, a grower node maintained by an agricultural product planting enterprise, a buyer node maintained by an agricultural product purchasing enterprise, a forwarder node maintained by an agricultural product shipping enterprise, and a seller node maintained by an agricultural product selling enterprise.
The agricultural product information maintenance method of the embodiment of the present application is described below by taking as an example a process in which ownership of agricultural products is transferred from an agricultural product planting enterprise to an agricultural product purchasing enterprise. As shown in fig. 5, the interaction flow of this embodiment may include the following steps:
and S501, generating an intelligent contract corresponding to the agricultural product to be subjected to ownership transfer between the agricultural product planting enterprise and the agricultural product purchasing enterprise through the planting party node and the purchasing party node, and storing the intelligent contract at the planting party node and the purchasing party node.
For example, a smart contract may include: the two-dimensional code information of the agricultural product to be transferred, the attribute and the quality information of the agricultural product, the public key of the agricultural product planting enterprise, the public key of the agricultural product purchasing enterprise, the signature of the agricultural product planting enterprise generated by the agricultural product planting enterprise by using the private key of the agricultural product planting enterprise, the signature of the agricultural product purchasing enterprise generated by using the private key of the agricultural product purchasing enterprise by using the agricultural product purchasing enterprise, and the like.
And S502, the purchasing side node sends an uploading request for uploading the intelligent contract to the block chain to the monitoring side node, the transporting side node and the selling side node.
The step can also be completed by the planting side node, and the specific implementation process is similar to the process of uploading the intelligent contract, and is not described again here.
And S503, the supervisor node, the transporter node and the seller node vote for the intelligent contract based on a consensus mechanism, and the intelligent contract is stored in the block chain under the condition that the voting node proportion is more than 2/3.
Here, the voting may be understood as sending a verification passing indication to other nodes, which is specifically described above and is not described herein again.
For example, if at least two of the supervisor node, the carrier node, and the seller node indicate that the intelligent contract is verified by voting, the three nodes may be triggered to store the intelligent contract respectively, so that the intelligent contract is stored in the blockchain.
And S503, under the condition that the purchasing side node confirms that the quality of the agricultural product of which the ownership is to be transferred is qualified, sending a contract validation instruction to the supervision side node, the transportation side node, the seller side node and the planting side node to indicate each node in the block chain to set the state of the intelligent contract to be a validation state, and recording that the ownership of the agricultural product is transferred from the agricultural product planting enterprise to the agricultural product purchasing enterprise.
And S504, the intelligent contract is set to be in an effective state by the supervisor node, the transporter node, the seller node and the grower node, an ownership transfer record for recording the ownership of the agricultural product transferred from the agricultural product grower enterprise to the agricultural product purchasing enterprise is generated, and the ownership transfer record corresponding to the agricultural product is stored in the block chain.
It will be appreciated that in the event that the buyer node confirms that the quality of the agricultural product to which ownership is to be transferred is not acceptable, the buyer node will likewise send an indication of the quality of the non-acceptable to the supervisor node, which will likewise determine the responsible party in response to the indication of the quality of the non-acceptable. Since the transfer of ownership of agricultural products in this embodiment only involves the agricultural product planting enterprise and the agricultural product purchasing enterprise, the supervisor node only needs to determine the responsible party who has dishonest behavior from the agricultural product planting enterprise and the agricultural product purchasing enterprise.
If the supervision party node receives the quality unqualified indication, the supervision party can detect whether the quality of the agricultural product is unqualified, if the quality of the agricultural product is unqualified, the agricultural product provided by the agricultural product planting enterprise is unqualified, and the agricultural product planting enterprise has a dishonest behavior; if the quality of the agricultural product is qualified, the agricultural product purchasing enterprise is indicated to have malicious behaviors of 35820, and the behaviors are informed, and the agricultural product purchasing enterprise is confirmed to have a dishonest behavior.
It can be understood that, in the embodiment of the present application, an agricultural product planting enterprise is taken as an agricultural product ownership transfer party, and the agricultural product purchasing enterprise is taken as an agricultural product ownership receiving party for example, but it can be understood that, when the agricultural product ownership transfer party is an agricultural product purchasing enterprise, and the agricultural product ownership receiving party is an agricultural product transportation enterprise; or, in the case that the agricultural product ownership transferring party is an agricultural product transportation enterprise, and the agricultural product ownership receiving party is an agricultural product sales enterprise, the operation of the agricultural product ownership transferring party may be similar to the operation of the planter node of the agricultural product planting enterprise in this embodiment, and the operation of the agricultural product ownership transferring party may be similar to the operation of the purchaser node of the agricultural product purchasing enterprise in this embodiment, which is not described herein again.
The application also provides an agricultural product information maintenance device corresponding to the agricultural product information maintenance method.
As shown in fig. 6, which is a schematic diagram illustrating a component structure of an agricultural product maintenance apparatus according to the present application, the apparatus of the present embodiment is applied to a receiver node belonging to an agricultural product ownership receiver in a blockchain, where the blockchain includes at least three nodes, and the at least three nodes include the receiver node and a transfer node of an agricultural product ownership transfer party, and the apparatus includes:
a contract obtaining unit 601, configured to obtain an intelligent contract for restricting an agricultural product transaction, where the intelligent contract records at least: identification information of an agricultural product to be subjected to ownership transfer, agricultural product information related to the agricultural product, identification information of an agricultural product ownership receiving party and identification information of an agricultural product ownership transferring party;
a contract uploading unit 602, configured to send an upload request of the intelligent contract to the blockchain, so as to store the intelligent contract in the blockchain after other nodes in the blockchain except the receiver node and the transferor node verify the intelligent contract;
and a contract validation unit 603, configured to send a contract validation instruction to the blockchain after the quality of the agricultural product is determined to be qualified, where the contract validation instruction is used to instruct a node in the blockchain to set the state of the intelligent contract to a validation state, and record that the ownership of the agricultural product is transferred to the receiving party.
Optionally, the at least three nodes further include: a supervisor node maintained by a supervisor;
the apparatus may further include:
and the unqualified indication unit is used for sending a quality unqualified indication aiming at the agricultural product to the supervisor node under the condition that the quality of the agricultural product is determined to be unqualified, so that the supervisor node responds to the quality unqualified indication, determines a distrusted party with dishonest behavior from a plurality of parties participating in ownership transfer of the agricultural product, and stores a dishonest record of the distrusted party into the block chain, wherein the parties at least comprise an agricultural product ownership receiving party and an agricultural product ownership transferring party.
Optionally, the agricultural product information associated with the agricultural product in the intelligent contract obtained by the contract obtaining unit includes: attribute information of the agricultural product and quality information of the agricultural product;
the intelligent contract also records authority provisions for restricting the agricultural product ownership receiving party and the agricultural product ownership transferring party;
the intelligent contract also carries a signature of the agricultural product ownership receiver and a signature of the agricultural product ownership transfer party, and the signature of the agricultural product ownership receiver is generated by using a private key of the agricultural product ownership receiver in the block chain; the signature of the agricultural product ownership transferor is generated using a private key of the agricultural product ownership transferor in the blockchain.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. For the device-like embodiment, since it is basically similar to the method embodiment, the description is simple, and reference may be made to the partial description of the method embodiment for relevant points.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing is only a preferred embodiment of the present application and it should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims (10)

1. An agricultural product information maintenance method, applied to a receiver node belonging to an agricultural product ownership receiver in a blockchain, wherein the blockchain comprises at least three nodes including the receiver node and a transfer node of an agricultural product ownership transfer party, the method comprising:
obtaining an intelligent contract for constraining an agricultural product transaction, the intelligent contract having recorded thereon at least: identification information of an agricultural product to which ownership is to be transferred, agricultural product information associated with the agricultural product, identification information of an agricultural product ownership receiving party and identification information of an agricultural product ownership transferring party, wherein the identification information of the agricultural product to which ownership is to be transferred uniquely identifies the agricultural product to which ownership is to be transferred, and the agricultural product information associated with the agricultural product comprises: attribute information of the agricultural product and quality information of the agricultural product;
sending an upload request of the intelligent contract to the blockchain so as to store the intelligent contract in the blockchain after other nodes except the receiver node and the transfer node in the blockchain verify the intelligent contract;
after the quality of the agricultural product is qualified, sending a contract validation instruction to the blockchain, wherein the contract validation instruction is used for instructing nodes in the blockchain to set the state of the intelligent contract to a validation state, and recording the transfer of the ownership of the agricultural product to the receiving party.
2. The agricultural product information maintenance method of claim 1, wherein the at least three nodes further comprise: a supervisor node maintained by a supervisor;
the method further comprises the following steps:
and under the condition that the quality of the agricultural product is confirmed to be unqualified, sending a quality unqualified indication aiming at the agricultural product to the supervisor node, so that the supervisor node responds to the quality unqualified indication, determines a distrusted party with dishonest behavior from a plurality of parties participating in ownership transfer of the agricultural product, and stores a dishonest record of the distrusted party into the block chain, wherein the parties at least comprise an agricultural product ownership receiving party and an agricultural product ownership transferring party.
3. The agricultural-product information maintenance method of claim 1, wherein the method comprises:
the intelligent contract further records authority provisions for constraining the agricultural product ownership receiver and the agricultural product ownership transferor;
the intelligent contract also carries a signature of the agricultural product ownership receiver and a signature of the agricultural product ownership transfer party, and the signature of the agricultural product ownership receiver is generated by using a private key of the agricultural product ownership receiver in the block chain; the signature of the agricultural product ownership transferor is generated using a private key of the agricultural product ownership transferor in the blockchain.
4. An agricultural product information maintenance system, comprising:
a blockchain made up of a plurality of nodes, the plurality of nodes including at least: a transferor node belonging to an agricultural product ownership transferor, a receiver node belonging to an agricultural product ownership receiver, and a supervisor node maintained by a supervisor unit;
wherein, the receiving party node and the transferring party node are used for obtaining an intelligent contract used for restricting the agricultural product transaction, and the intelligent contract at least records: the method comprises the following steps of identifying information of an agricultural product to which ownership is to be transferred, agricultural product information associated with the agricultural product, identifying information of an agricultural product ownership receiving party and identifying information of an agricultural product ownership transferring party, wherein the identifying information of the agricultural product to which ownership is to be transferred uniquely identifies the agricultural product to which ownership is to be transferred, and the agricultural product information associated with the agricultural product comprises: attribute information of the agricultural product and quality information of the agricultural product; the receiver node or the transfer party node is also used for sending an uploading request of the intelligent contract to the blockchain;
the other nodes except the receiver node and the transfer node in the block chain are used for responding to the uploading request of the intelligent contract and storing the intelligent contract in the block chain after the intelligent contract is verified;
the receiver node is further configured to send a contract validation instruction to the blockchain after the quality of the agricultural product is determined to be qualified, where the contract validation instruction is used to instruct a node in the blockchain to set the state of the intelligent contract to a validation state, and record that the ownership of the agricultural product is transferred to the agricultural product ownership receiver.
5. The agricultural product information maintenance system of claim 4, wherein a node in the blockchain is further configured to store an ownership transfer record for recording transfer of ownership of the agricultural product from the agricultural product ownership transfer party to the agricultural product ownership receiving party after receiving the contract validation indication.
6. The agricultural product information maintenance system according to claim 5, wherein the receiver node is further configured to send an unqualified quality indication for the agricultural product to the supervisor node in the block chain if the quality of the agricultural product is determined to be unqualified;
the supervisor node is configured to determine, in response to the quality-fail indication, a distrusted party with dishonest behavior from a plurality of parties involved in the transfer of ownership of the agricultural product, and store a dishonest record of the distrusted party into the blockchain, where the plurality of parties includes at least the agricultural product ownership receiver and the agricultural product ownership transfer party.
7. The agricultural product information maintenance system of claim 6, wherein the supervisor node, upon determining that a distrusted party with dishonest behavior exists among the plurality of parties involved in the transfer of ownership of the agricultural product, is specifically configured to determine the plurality of parties involved in the transfer of ownership of the agricultural product based on the stored ownership transfer record of the agricultural product; obtaining a quality detection result of the quality of the agricultural product detected by the monitoring party; and determining a distrusted party with dishonest behavior from the plurality of parties according to the quality detection result.
8. An agricultural commodity information maintenance system according to any one of claims 4 to 7, wherein the blockchain comprises: a supervisor node maintained by a supervisor unit, a grower node maintained by an agricultural product planting enterprise, a buyer node maintained by an agricultural product purchasing enterprise, a forwarder node maintained by an agricultural product transportation enterprise, and a seller node maintained by an agricultural product sales enterprise;
wherein, in the case that the agricultural product ownership transfer party is the agricultural product planting enterprise, the transfer party node is the planter node, the agricultural product ownership receiving party is the agricultural product purchasing enterprise, and the receiving party node is the purchaser node;
under the condition that the agricultural product ownership transfer party is the agricultural product purchasing enterprise, the transfer party node is a purchasing party node, the agricultural product ownership receiving party is the agricultural product transportation enterprise, and the receiving party node is the transportation party node;
and under the condition that the agricultural product ownership transfer party is the agricultural product transportation enterprise, the transfer party node is a transportation party node, the agricultural product ownership receiving party is the agricultural product sales enterprise, and the receiving party node is the seller node.
9. The agricultural product information maintenance system of claim 5, further comprising: the terminal is used for sending an information query request to the nodes in the block chain, wherein the information query request carries the identification information of the target agricultural product to be queried;
and the node in the block chain is further used for acquiring agricultural product information related to the target agricultural product and ownership transfer records of the target agricultural product according to the identification information of the target agricultural product when the information query request is received.
10. An agricultural product information maintenance apparatus, applied to a receiver node belonging to an agricultural product ownership receiver in a blockchain, the blockchain including at least three nodes including the receiver node and a transfer node of an agricultural product ownership transfer, the apparatus comprising:
a contract obtaining unit for obtaining an intelligent contract for restricting the transaction of the agricultural product, the intelligent contract having recorded thereon at least: identification information of an agricultural product to which ownership is to be transferred, agricultural product information associated with the agricultural product, identification information of an agricultural product ownership receiving party and identification information of an agricultural product ownership transferring party, wherein the identification information of the agricultural product to which ownership is to be transferred uniquely identifies the agricultural product to which ownership is to be transferred, and the agricultural product information associated with the agricultural product comprises: attribute information of the agricultural product and quality information of the agricultural product;
a contract uploading unit, configured to send an upload request of the intelligent contract to the blockchain, so as to store the intelligent contract in the blockchain after other nodes except the receiver node and the transfer node in the blockchain verify the intelligent contract;
and the contract validation unit is used for sending a contract validation instruction to the blockchain after the quality of the agricultural product is qualified, wherein the contract validation instruction is used for instructing a node in the blockchain to set the state of the intelligent contract to be a validation state, and recording that the ownership of the agricultural product is transferred to the receiving party.
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