CN109359978A - Smart contract transaction method and system based on blockchain network - Google Patents

Abstract

The invention proposes a kind of intelligent contract method of commerce and system based on block chain network, wherein method includes: to obtain the target for generating power with bet event contract of block chain network broadcast to participate in node；Each participation node generates the intelligent contract set of itself, and broadcasts intelligent contract set；Verifying node is verified, if being verified, the verifying cryptographic Hash that different intelligent contract set carries is compared, is passed through if comparing, and is broadcasted intelligent contract set to block chain network and is determined message；After target participates in node acquisition contract generation power, after timer reaches, according to bet event contract information analysis Intelligent target contract set, corresponding result feedback is carried out to the intelligent contract of each node of betting.As a result, using safe and reliable online bet transaction is provided the characteristics of block chain network decentralization for user, convenience and the safety of the participation of bet event are improved.

Description

Smart contract transaction method and system based on blockchain network

technical field

The present invention relates to the field of communication technologies, and in particular, to a method and system for smart contract transaction based on a blockchain network.

Background technique

At present, with the progress of life, betting in racing, horse racing and other competition scenarios has also become the main entertainment method for users. In related technologies, betting information such as betting amount and betting event results and lottery draws All processing relies on third-party institutions to achieve, but this centralized processing method has high risks. For example, when a third-party institution is maliciously attacked, the betting information may be leaked or hackers can tamper with the betting information Seeking personal interests, etc., it is also possible that all the betting amount is transferred by hackers, etc. Therefore, a method that can effectively ensure the security of betting events is urgently needed.

SUMMARY OF THE INVENTION

The present invention provides a smart contract transaction method and system based on a blockchain network, so as to solve the problem that in the prior art, the management of betting information and betting events is managed by a third-party organization, resulting in high risk and easy security Threat technical issues.

The first embodiment of the present invention provides a smart contract transaction method based on a blockchain network, including: each participating node acquires a smart contract broadcast by each betting node in the blockchain network within a preset time period of the betting event, wherein , the smart contract includes: betting node identifier, betting event result and betting amount, calculates the random number generated by its own participating nodes and all smart contracts according to the preset algorithm to generate the corresponding preemption hash value, and obtains the After analyzing the preemption hash values generated by all participating nodes according to the preset preemption strategy, the blockchain network broadcasts the target participating nodes with the right to generate the betting event contract corresponding to the eligible target preemption hash values. ; Each participating node generates its own smart contract set from the smart contracts broadcast by all betting nodes acquired by its own node within the preset period, and calculates the smart contract set to generate the corresponding verification hash value, and Broadcast its own node identification and the smart contract collection carrying the verification hash value signed by its own private key to the blockchain network; the verification node receives the node identification broadcasted by a plurality of participating nodes and the carrying verification signed by the private key For the smart contract collection of hash values, the corresponding private key signatures are verified in turn according to the preset public key corresponding to each node identifier. If the verification is passed, the verification hash values carried by different smart contract collections are compared. If the number of times of the same valid verification hash value reaches the preset threshold, the smart contract set corresponding to any valid verification hash value is used as the target smart contract set, and broadcast to the blockchain network carrying the verification node identifier and the A confirmation message of the smart contract set for verifying the signature of the private key, wherein the confirmation message includes: the target smart contract set, the valid verification hash value and the corresponding verification timestamp; after the target participating node obtains the contract generation right , set a timer corresponding to the betting event according to the preset betting event contract information, and when the timer arrives, verify the verification private key according to the pre-acquired verification public key corresponding to the verification node identifier If the verification is passed, the target smart contract set is analyzed according to the betting event contract information, and corresponding results are fed back to the smart contracts of each betting node.

The second embodiment of the present invention provides a smart contract transaction system based on a blockchain network, including: a participating node and a verification node, wherein each participating node in the participating nodes is used for a preset time period of a betting event The smart contract broadcasted by each betting node in the blockchain network is obtained, wherein the smart contract includes: betting node identification, betting event result and betting amount, random generated by the participating nodes according to the preset algorithm The corresponding preemption hash value is generated by calculating the number and all smart contracts, and after the blockchain network analyzes the preemption hash value generated by all participating nodes according to the preset preemption strategy, the broadcasted and qualified target preemption hashes are obtained. The target participating node with the right to generate the wagering event contract corresponding to the value; each participating node is also used to generate its own smart contract broadcast by all wagering nodes acquired by its own node within the preset time period the set of smart contracts, and calculate the set of smart contracts to generate the corresponding verification hash value, and broadcast to the blockchain network its own node identification and the verification hash value signed by its own private key. A set of smart contracts; the verification node is used to receive the node identifiers broadcasted by multiple participating nodes and the smart contract set that carries the verification hash value signed by the private key, according to the preset public key corresponding to each node identifier in sequence The corresponding private key signature is verified. If the verification is passed, the verification hash values carried by different smart contract sets are compared. If the number of times of the same valid verification hash value reaches the preset threshold, any valid verification hash value will be verified. The set of smart contracts corresponding to the value is taken as the set of target smart contracts, and the confirmation message of the set of smart contracts carrying the identification of the verification node and the signature of the verified private key is broadcast to the blockchain network, wherein the confirmation message includes: the target smart contract set, the valid verification hash value and the corresponding verification timestamp; the target participating node is used to set the corresponding betting event according to the preset betting event contract information after acquiring the contract generation right When the timer arrives, the verification private key is verified according to the verification public key corresponding to the verification node identification obtained in advance, and if the verification is passed, the betting event contract information is analyzed according to the betting event. The target smart contract set provides corresponding result feedback to the smart contracts of each betting node.

A third embodiment of the present invention provides a computer device, including: a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor executes the computer program, the above-mentioned embodiments are implemented. The described smart contract transaction method based on the blockchain network.

A fourth embodiment of the present invention provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the blockchain network-based smart contract as described in the foregoing embodiments transaction method.

The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

Each participating node obtains the smart contract broadcast by each betting node in the blockchain network within the preset time period of the betting event, wherein the smart contract includes: betting node identification, betting event result and betting amount, according to the preset The algorithm calculates the random number generated by its participating nodes and all smart contracts to generate the corresponding preemption hash value, and obtains the preemption hash value generated by the blockchain network after analyzing the preemption hash value generated by all participating nodes according to the preset preemption strategy. The target participating node with the right to generate the wagering event contract corresponding to the eligible target preemption hash value, each participating node generates its own smart contract from the smart contract broadcast by all wagering nodes acquired by its own node within a preset period of time set, and calculate the smart contract set to generate the corresponding verification hash value, broadcast its own node identification and the smart contract set with the verification hash value signed by its own private key to the blockchain network, and the verification node receives multiple The node IDs participating in the node broadcast and the smart contract collections carrying the verification hash value signed by the private key, according to the preset public key corresponding to each node ID, the corresponding private key signatures are verified in turn. If the verification is passed, the Compare the verification hash values carried by different smart contract sets. If the number of times of the same valid verification hash value reaches the preset threshold, the smart contract set corresponding to any valid verification hash value is used as the target smart contract set, and Broadcast the confirmation message of the smart contract set carrying the verification node identification and the verified private key signature to the blockchain network, where the confirmation message includes: the target smart contract set, the valid verification hash value and the corresponding verification timestamp, and then the target participates in the After the node obtains the contract generation right, the timer corresponding to the betting event is set according to the preset contract information of the betting event. When the timer arrives, the verification private key is verified according to the pre-acquired verification public key corresponding to the verification node identification. Verification, if the verification is passed, analyze the target smart contract set according to the betting event contract information, and give corresponding result feedback to the smart contracts of each betting node. As a result, users can place bets on mobile terminals, which improves the current situation that users need to go to physical stores to place bets in the prior art, improves the convenience of betting, and utilizes the decentralization of the blockchain network. It provides users with safe and reliable online betting transactions, and improves the security of betting events.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic structural diagram of a smart contract transaction system based on a blockchain network according to an embodiment of the present invention;

2 is a schematic diagram of the interaction of a smart contract transaction system based on a blockchain network according to an embodiment of the present invention;

3 is a flowchart of a smart contract transaction method based on a blockchain network according to an embodiment of the present invention;

4-1 is a schematic diagram of an application scenario of a smart contract transaction method based on a blockchain network according to an embodiment of the present invention; and

4-2 is a schematic diagram of an application scenario of a smart contract transaction method based on a blockchain network according to another embodiment of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In order to solve the technical problem that in the prior art described above, the management of wagering information and wagering events is unifiedly managed by a third-party organization, resulting in high risks and being vulnerable to security threats. The invention provides a smart contract transaction method based on the blockchain network, which utilizes the decentralization feature of the blockchain network to provide users with safe and reliable online betting transactions, and improves the convenience and safety of participating in betting events. sex.

Among them, for the sake of clarity of description, the smart contract transaction system based on the blockchain network according to the embodiment of the present invention is first described. FIG. 1 is a schematic structural diagram of the smart contract transaction system based on the blockchain network according to an embodiment of the present invention. As shown in FIG. 1, the system includes a participating node 100 and a verification node 200, wherein the participating node 100 can be understood as any node participating in the betting event in the blockchain network, including the snatch event of the right to generate the smart contract, the event of the smart contract Receiving events, etc., may include mining nodes, timestamp nodes, etc. The verification node 200 can be understood as a node that implements relevant verification functions in this embodiment of the present invention, which may be a timestamp server or one or more participating nodes. There is no restriction here.

Referring to Figure 2, in the actual execution process, each participating node obtains the smart contract broadcast by each betting node in the blockchain network within the preset time period of the betting time (step 1), and uses the smart contract as the betting node. The specific betting information for betting is not difficult to understand. This betting method can be implemented on the mobile phone that is certified as a participating node. The operation is convenient, and there is no need to go to a special store to buy bets. The smart contract includes the betting node ID that identifies the uniqueness of the node, the outcome of the betting event, and the betting amount.

In the embodiment of the present invention, when multiple participating nodes place a bet, they do not rely on a centralized third-party organization for betting management, etc., but rely on the decentralized execution mechanism of the blockchain network. To snatch the functions of the third-party organization in the prior art, in this embodiment, the right to generate the betting time contract is used to represent the snatch of the functions of the third-party organization.

Specifically, according to the preset algorithm, the random number generated by its participating nodes and all smart contracts are calculated to generate the corresponding preemption hash value, and the blockchain network analyzes the preemption generated by all participating nodes according to the preset preemption strategy. After the hash value, broadcast the target participating node with the right to generate the wagering event contract corresponding to the eligible target preemption hash value (step 2), that is, with a preset preemption strategy and screening conditions. Setting, determine the target participating node with the right to generate the wagering event contract. As a possible implementation method, the preemption strategy can be determined by comparing the preemption hash values generated by all participating nodes to determine the minimum preemption hash value of the target preemption hash value. As another possible implementation method, the preemption strategy can be To compare the preemption hashes generated by all participating nodes, determine the largest preemption hash to the target preemption hash.

Further, in order to further ensure that the information possessed by the target participating nodes is complete, each participating node generates its own smart contract set from the smart contracts broadcast by all betting nodes acquired by its own node within a preset period, and calculates the smart contract set. Generate the corresponding verification hash value, and broadcast its own node identification and the smart contract set carrying the verification hash value signed by its own private key to the blockchain network (step 3), so as to combine the relevant records of all participating nodes. The information verifies whether the information about the bet saved in the target participating node is comprehensive.

Specifically, the verification node receives the node identifiers broadcasted by multiple participating nodes and the smart contract set that carries the verification hash value signed by the private key, and sequentially pairs the corresponding private key according to the preset public key corresponding to each node identifier. The signature is verified (step 4). If the verification is passed, it means that the smart contract set is true. Therefore, the verification hash values carried by different smart contract sets are compared. If the number of times of the same valid verification hash value reaches the preset threshold, The smart contract set corresponding to any valid verification hash value is used as the target smart contract set, and the smart contract set determination message carrying the verification node identification and the verified private key signature is broadcast to the blockchain network (step 5), wherein, The confirmation message includes: the target smart contract set, the valid verification hash value and the corresponding verification timestamp. At this time, it should be understood that the target smart contract set is a complete smart contract set, including the smart contracts sent by all betting nodes.

Finally, after the target participating node obtains the contract generation right, it also performs the betting management function of the third-party organization, such as the lottery function, and sets the timer corresponding to the betting event according to the preset betting event contract information. When the timer arrives , verifies the verification private key according to the verification public key corresponding to the verification node identification obtained in advance. If the verification passes, the target smart contract set is analyzed according to the betting event contract information, and the corresponding results are obtained for the smart contracts of each betting node. Feedback (step 6). In one embodiment of the present invention, the target participating node calculates the total betting amount according to the target smart contract set, and obtains a preset proportion of the reward amount from the total betting amount according to the betting event contract information, thereby improving the participation node preemption contract. The enthusiasm of generating the right ensures a large number of participating nodes and avoids malicious preemption by illegal nodes to a certain extent.

Therefore, the smart contract transaction system based on the blockchain network in the embodiment of the present invention realizes that the user can place bets on the mobile terminal, improves the current situation that the user needs to go to the physical store to place the bet in the prior art, and improves the The convenience of betting, and the decentralization of the blockchain network provides users with safe and reliable online betting transactions, which improves the security of betting events.

In order to explain in more detail the details of the execution of the smart contract transaction system based on the blockchain network according to the embodiment of the present invention, so that those skilled in the art are more clear about the smart contract transaction process based on the blockchain network of the present invention, the following focuses on A description of the details of the transaction process on the blockchain network-based smart contract transaction method side.

Fig. 3 is a flowchart of a smart contract transaction method based on a blockchain network according to an embodiment of the present invention. As shown in Fig. 3, the method includes:

Step 101, each participating node obtains the smart contract broadcast by each betting node in the blockchain network within the preset time period of the betting event, wherein the smart contract includes: betting node identifier, betting event result and betting amount, According to the preset algorithm, the random number generated by its participating nodes and all smart contracts are calculated to generate the corresponding preemption hash value, and the blockchain network analyzes the preemption hash value generated by all participating nodes according to the preset preemption strategy. , Broadcast the target participating node with the right to generate the wagering event contract corresponding to the eligible target preemption hash value.

Among them, the above-mentioned preset time period is related to the start and end events of the betting event. Usually, the preset time period is the time from the betting start time specified by the betting event initiator to a certain time before the lottery draw time. For example, when the betting event is During horse racing, the start time of the horse race is 8.00 and the end time is 12.00, and the corresponding preset time period is from 6.00 to 8.00.

Specifically, each participating node obtains a smart contract broadcast by each betting node in the blockchain network within a preset time period corresponding to the betting event, wherein each betting node may correspond to a terminal such as a mobile phone, computer, etc. that has been successfully authenticated by the node , so that the user can directly place a bet in the corresponding application program in the above-mentioned terminal, without the need to go to the physical store to place a bet. Including the identification of the betting node, such as the ID of the terminal device corresponding to the betting node, the network access license or the identification number in the blockchain network and other information that uniquely identifies the betting node, the smart contract also includes the betting event result, For example, when the betting event is a racing car, the result of the betting event can be a traffic jam to win, etc. When the result of the betting event is consistent with the actual result of the game, it can be determined that the corresponding participating node bet profitably. The smart contract also includes betting Bet the event amount. The bet amount should be greater than the minimum amount specified by the competition party. The size of the bet event amount directly affects the profit, or the amount of the payout.

In the embodiment of the present invention, the determination of the right to generate the betting event contract is performed based on the decentralized execution mechanism of the blockchain network, that is, in the blockchain, each participating node can preempt the right to generate the betting event contract, Participating nodes compete fairly, and the successful preemption of participating nodes is uncertain, thus effectively avoiding malicious attacks and ensuring the security of information related to betting events.

Specifically, the random number generated by the participating nodes participating in the preemption, such as the random number generated according to the preset random number generation algorithm, and then the random number and the random number generated by the participating nodes themselves according to the preset algorithm (such as a hash algorithm). All smart contracts perform calculations to generate the corresponding preemption hash value, and based on the preemption hash value, determine the target participating node that has successfully preempted.

The blockchain network analyzes the preemption hash values generated by all participating nodes according to the preset preemption strategy, determines the target preemption hash values that meet the conditions, and then broadcasts the generation of contracts with wagering events corresponding to the target preemption hash values that meet the conditions. The target participating node of the right, the target participating node will act as the processor of the management of the betting-related information and the lottery and other functions of this betting event.

It should be noted that, according to different application scenarios, the above preemption strategies and corresponding conditions are different. As a possible implementation method, compare the preemption hash values generated by all participating nodes, and determine the minimum preemption hash value for the target preemption. The hash value, as another possible implementation, compares the preemptive hash values generated by all participating nodes, and determines the largest preemptive hash value as the target preemptive hash value.

In an embodiment of the present invention, the target participating node can also be recorded based on the blockchain operation mechanism, so as to facilitate subsequent management of the target participating node, for example, allocating monetary rewards to the target participating node, etc., mining nodes In the generated block message, record the target participating node that has the right to generate the contract of the noted event.

Step 102, each participating node generates its own smart contract set from the smart contracts broadcast by all betting nodes acquired by its own node within a preset time period, and calculates the smart contract set to generate a corresponding verification hash value, and sends it to the district. The blockchain network broadcasts its own node identification and a collection of smart contracts signed by its own private key that carry the verification hash value.

It should be understood that the smart contracts obtained by the target participating nodes may be incomplete due to unstable network connections and other reasons. In order to ensure that the target participating nodes obtain all the smart contracts of the betting nodes, the smart contracts obtained by other participating nodes are comprehensively considered. All smart contracts are determined.

Specifically, each participating node generates its own smart contract set from the smart contracts broadcast by all betting nodes acquired by its own node within a preset period, and calculates the smart contract set to generate a corresponding verification hash value, wherein, It should be understood that the verification hash value corresponds to the smart contract set one-to-one, and is uniquely corresponding, for example, the verification hash value A corresponds to the smart contract set 1, the verification hash value B corresponds to the smart contract set 2, etc., and then, Broadcasts its own node identification and a collection of smart contracts signed by its own private key that carry the verification hash value to the blockchain network. Among them, the private key of the participating node is held by the participating node itself, which is used to represent the identity of the participating node and avoid malicious nodes from disguising the participating nodes.

Step 103, the verification node receives the node identifiers broadcasted by the multiple participating nodes and the smart contract set carrying the verification hash value signed by the private key, and signs the corresponding private key in turn according to the preset public key corresponding to each node identifier Verify, if the verification is passed, compare the verification hash values carried by different smart contract sets, if the number of times of the same valid verification hash value reaches the preset threshold, the smart contract corresponding to any valid verification hash value will be compared. The set is used as the target smart contract set, and broadcasts to the blockchain network the smart contract set confirmation message carrying the verification node identification and the verified private key signature, where the confirmation message includes: the target smart contract set and the valid verification hash value and the corresponding Validation timestamp.

Specifically, based on the sets of smart contracts sent by multiple participating nodes, which complement each other, all smart contracts are determined, and the verification node receives the node identifiers broadcasted by the multiple participating nodes and the smart contract that carries the verification hash value signed by the private key. The contract set, in this embodiment, the participating nodes are authenticated based on the key pair, and the private key and the public key of the participating nodes are a pair of passwords. The corresponding private key signature is verified to avoid illegal nodes disguised as participating nodes to send the smart contract set. If the verification is passed, it means that the smart contract set is true. Therefore, the verification hash values carried by different smart contract sets are compared. The comparison results determine the target smart contract set containing all smart contracts.

Specifically, a preset threshold is set in advance according to the number of participating nodes. The preset threshold is used to ensure the mainstream opinion of some participating nodes. If the same number of valid verification hash values reaches the preset threshold, it indicates that most The participating nodes all generate the same set of smart contracts. Therefore, if the set of smart contracts is considered to be reliable, the set of smart contracts corresponding to any valid verification hash value is used as the set of target smart contracts and broadcast to the blockchain network. The confirmation message of the smart contract set carrying the verification node identifier and the verified private key signature, wherein the confirmation message includes: the target smart contract set, the valid verification hash value and the corresponding verification timestamp, the verification timestamp is used to indicate the verification time, To avoid being disguised, the smart contract set determination message avoids other illegal nodes from disguising as verification nodes by carrying the verification node identifier and signing the verification private key. The verification private key is held by the verification node itself, which is used to indicate the verification of the private key. Identity avoids being disguised.

The verification node may be a timestamp server, or one or more participating nodes. In an embodiment of the present invention, as shown in Figure 4-1, when the verification node is a specially set timestamp server, the participating nodes Including nodes 1-4, and the preset threshold is 4, the timestamp server verifies whether the verification hash values carried by the smart contract sets A, B, C, and D sent by the 4 participating nodes are all consistent. Any one of the smart contract sets in the contract sets A, B, C, and D is used as the target smart contract set, and broadcasts to the blockchain network the confirmation message of the smart contract set carrying the timestamp server identifier and signed by the timestamp server private key.

In an embodiment of the present invention, in order to improve the verification efficiency and reduce the verification cost, the verification node is one or more participating nodes, as shown in Figure 4-2, when the verification nodes are participating nodes 1 and 2, the preset threshold If it is 4, then participating node 1 verifies whether the verification hash values carried by the smart contract sets A, B, and C sent by participating nodes 1-3 are all consistent, and participating node 2 verifies the smart contract sets D and E sent by participating nodes 4-6. , Whether the verification hash values carried by F are all consistent, if participating node 1 verifies that the verification hash values carried by smart contract sets A and B are consistent, and participating node 2 verifies that the verification hash values carried by smart contract sets E and F are consistent, then Participating node 1 or 2 compares whether the verification hash value carried by A and B is consistent with the verification hash value carried by contract sets E and F. If they are consistent, any smart contract in smart contract sets A, B, C, and D will be used. The set is used as the target smart contract set, and broadcasts to the blockchain network the confirmation message of the smart contract set with the identity of participating node 1 or 2 and the signature of the private key of participating node 1 or 2.

Step 104: After the target participating node obtains the contract generation right, a timer corresponding to the betting event is set according to the preset contract information of the betting event, and when the timer arrives, according to the pre-acquired verification public key corresponding to the verification node identification The verification private key is verified. If the verification is passed, the target smart contract set is analyzed according to the betting event contract information, and the corresponding result feedback is given to the smart contracts of each betting node.

Specifically, after the target participating node obtains the contract generation right, a timer corresponding to the betting event is set according to the preset betting event contract information, and the timer corresponds to the betting draw time, draw ratio, etc. The information can be signed with the initiator of the betting event. When the timer arrives, the lottery will not be processed directly, but to ensure security, the verification node will be authenticated again, that is, based on the public-private key mechanism. The verification public key corresponding to the verification node identification obtained in advance verifies the verification private key. If the verification is passed, it indicates that the verification node is reliable, and the target smart contract set is analyzed according to the contract information of the wagering event, and the smart contract of each wagering node is analyzed. The contract provides corresponding result feedback, for example, for the betting node where the betting result corresponding to the betting event is consistent with the game result, the bonus is issued to increase the bet amount by 10%, etc.

In an embodiment of the present invention, in order to mobilize the enthusiasm of participating nodes to seize the right to generate smart contracts, a certain amount of rewards can also be given to the target participating nodes that have successfully seized the rights. Based on this reward mechanism, a large number of participating nodes can be attracted to participate in smart contracts. The preemption of the generation right is in progress, thus avoiding the successful preemption of the smart contract generation right by illegal nodes.

In this embodiment, the betting event contract information may include reward rules for the target participating nodes. For example, the reward rule is that the target participating nodes are rewarded according to a certain percentage of the total betting amount, such as a percentage of 1/10,000. Reward, the target participating node calculates the total bet amount according to the target smart contract set, and obtains a preset proportion of the reward amount from the total bet amount according to the betting event contract information.

To sum up, in the smart contract transaction method based on the blockchain network according to the embodiment of the present invention, each participating node obtains the smart contract broadcast by each betting node in the blockchain network within the preset time period of the betting event, wherein the smart contract Including: betting node identification, betting event result and betting amount, calculate the random number generated by its own participating nodes and all smart contracts according to the preset algorithm to generate the corresponding preemption hash value, and obtain the blockchain network according to the The preset preemption strategy analyzes the preemption hash values generated by all participating nodes, and broadcasts the target participating nodes with the right to generate the wagering event contract corresponding to the eligible target preemption hash values. The smart contracts broadcast by all betting nodes acquired within a preset period of time generate their own smart contract sets, and the smart contract sets are calculated to generate the corresponding verification hash values, and broadcast their own node IDs to the blockchain network. The set of smart contracts signed by the private key that carries the verification hash value, the verification node receives the node identifiers broadcast by multiple participating nodes, and the set of smart contracts signed by the private key that carries the verification hash value, according to the preset and each node identifier The corresponding public key verifies the corresponding private key signature in turn. If the verification passes, the verification hash values carried by different smart contract sets are compared. If the number of times of the same valid verification hash value reaches the preset threshold, the The smart contract set corresponding to any valid verification hash value is used as the target smart contract set, and the smart contract set confirmation message carrying the verification node identifier and the verified private key signature is broadcast to the blockchain network, wherein the confirmation message includes: target smart contract set The contract set, the valid verification hash value and the corresponding verification timestamp, and then, after the target participating node obtains the contract generation right, the timer corresponding to the wagering event is set according to the preset wagering event contract information. When the timer arrives , verifies the verification private key according to the verification public key corresponding to the verification node identification obtained in advance. If the verification passes, the target smart contract set is analyzed according to the betting event contract information, and the corresponding results are obtained for the smart contracts of each betting node. feedback. As a result, users can place bets on mobile terminals, which improves the current situation that users need to go to physical stores to place bets in the prior art, improves the convenience of betting, and utilizes the decentralization of the blockchain network. It provides users with safe and reliable online betting transactions, and improves the security of betting events.

In order to implement the above-mentioned embodiments, the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor executes the computer program, the The smart contract transaction method based on the blockchain network described in the foregoing embodiments.

In order to realize the above embodiments, the present invention also proposes a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the blockchain-based blockchain described in the foregoing embodiments can be realized. The network's smart contract transaction method.

In the present invention, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. An intelligent contract transaction method based on a block chain network is characterized by comprising the following steps:

each participating node acquires an intelligent contract broadcasted by each betting node in a block chain network within a preset time period of a betting event, wherein the intelligent contract comprises the following steps: calculating the random numbers generated by the participating nodes of the betting node identification, the betting event result and the betting amount according to a preset algorithm to generate corresponding preemption hash values, and acquiring target participating nodes which are broadcasted and correspond to the qualified target preemption hash values and have the betting event contract generation right after the block chain network analyzes the preemption hash values generated by all the participating nodes according to a preset preemption strategy;

each participating node generates an intelligent contract set of the participating node according to the intelligent contracts broadcasted by all the betting nodes acquired by the participating node in the preset time period, calculates the intelligent contract set to generate a corresponding verification hash value, and broadcasts a node identifier of the participating node and the intelligent contract set which is signed by a private key of the participating node and carries the verification hash value to the block chain network;

the method comprises the steps that a verification node receives a plurality of node identifications participating in node broadcasting and intelligent contract sets which are subjected to private key signature and carry verification hash values, the corresponding private key signatures are sequentially verified according to a preset public key corresponding to each node identification, if verification is passed, the verification hash values carried by different intelligent contract sets are compared, if the same number of times of valid verification hash values reaches a preset threshold value, the intelligent contract set corresponding to any valid verification hash value is used as a target intelligent contract set, and the intelligent contract sets carrying the verification node identifications and the verification hash values are broadcasted to a block chain network to determine messages, wherein the determining messages comprise: a target intelligent contract set and the valid validation hash values and corresponding validation timestamps;

and after the target participation node acquires the contract generation right, setting a timer corresponding to the betting event according to preset betting event contract information, verifying the verification private key according to a pre-acquired verification public key corresponding to the verification node identification after the timer arrives, and if the verification is passed, analyzing the target intelligent contract set according to the betting event contract information and feeding back corresponding results to the intelligent contracts of all betting nodes.

2. The method of claim 1, wherein the preset preemption policy comprises:

comparing the occupation hash values generated by all the participating nodes, and determining the minimum occupation hash value as a target occupation hash value; or,

and comparing the preemption hash values generated by all the participating nodes, and determining the maximum preemption hash value as a target preemption hash value.

3. The method of claim 1, further comprising:

the target participation node calculates the total amount of money to be bet according to the target intelligent contract set;

and acquiring the award amount with a preset proportion from the total amount of the bet amount according to the contract information of the bet event.

4. The method of claim 1, further comprising:

the mining node records the target participant node with the betting event contract generation right in the generated block message.

5. The method of claim 1, wherein the verifying node comprises:

a timestamp server, or one or more participating nodes.

6. An intelligent contract transaction system based on a blockchain network, comprising: a participating node and an authenticating node, wherein,

each participating node in the participating nodes is configured to obtain an intelligent contract broadcasted by each betting node in the block chain network within a preset time period of a betting event, where the intelligent contract includes: calculating the random numbers generated by the participating nodes of the betting node identification, the betting event result and the betting amount according to a preset algorithm to generate corresponding preemption hash values, and acquiring target participating nodes which are broadcasted and correspond to the qualified target preemption hash values and have the betting event contract generation right after the block chain network analyzes the preemption hash values generated by all the participating nodes according to a preset preemption strategy;

each participating node is further configured to generate an intelligent contract set of the participating node by using an intelligent contract broadcasted by all the betting nodes acquired by the participating node within the preset time period, calculate the intelligent contract set to generate a corresponding verification hash value, and broadcast a node identifier of the participating node and the intelligent contract set carrying the verification hash value and signed by a private key of the participating node to the block chain network;

the verification node is used for receiving a plurality of node identifiers participating in node broadcasting and intelligent contract sets which are signed by private keys and carry verification hash values, verifying the corresponding private key signatures in sequence according to a preset public key corresponding to each node identifier, if the verification passes, comparing the verification hash values carried by different intelligent contract sets, if the same number of times of effectively verifying the hash values reaches a preset threshold value, taking the intelligent contract set corresponding to any one valid verification hash value as a target intelligent contract set, and broadcasting the intelligent contract sets carrying the verification node identifiers and the verification hash values to the block chain network to determine messages, wherein the determination messages comprise: a target intelligent contract set and the valid validation hash values and corresponding validation timestamps;

and the target participation node is used for setting a timer corresponding to the betting event according to preset betting event contract information after acquiring the contract generation right, verifying the verification private key according to a pre-acquired verification public key corresponding to the verification node identifier after the timer arrives, and analyzing the target intelligent contract set according to the betting event contract information and feeding back corresponding results to the intelligent contracts of all the betting nodes if the verification is passed.

7. The system of claim 6, wherein the preset preemption policy comprises:

comparing the occupation hash values generated by all the participating nodes, and determining the minimum occupation hash value as a target occupation hash value; or,

and comparing the preemption hash values generated by all the participating nodes, and determining the maximum preemption hash value as a target preemption hash value.

8. The system of claim 6, wherein the target participant node is further configured to:

calculating a total amount of money to be bet according to the target intelligent contract set;

and acquiring the award amount with a preset proportion from the total amount of the bet amount according to the contract information of the bet event.

9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the intelligent contract transaction method based on a blockchain network according to any one of claims 1 to 5 when executing the computer program.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements a method for intelligent contract trading based on a blockchain network according to any one of claims 1 to 5.