Method and system for constructing multiple trigger mechanisms based on external data to execute smart contract in blockchain network

Abstract

The present invention relates to a method and a system for constructing multiple trigger mechanisms based on external data to execute a smart contract in a blockchain network. The method comprises that: a smart contract is published in a blockchain network to wait for completion confirmed by all participants in the smart contract; a trigger component in the blockchain network performs calling of external data according to custom trigger mechanisms in the smart contract, and releases transaction broadcast information to the distributed nodes of the entire network after polling that the externaldata satisfies any of the trigger mechanisms; and finally, the distributed nodes of the entire network respectively call and verify the external data corresponding to the triggered smart contract. By using the method and system for constructing multiple trigger mechanisms based on external data to execute a smart contract in a blockchain network provided by the present invention, calling of theexternal data can be implemented for the smart contract on the blockchain, the calling of the external data can be taken as a trigger basis for the corresponding smart contract, and it is ensured thatindependent and complete execution of the smart contract can be implemented once the smart contract is triggered, so that the smart contract is expanded to implement support on the complex application scenarios.

Description

technical field [0001] The present invention relates to the technical field of blockchain, in particular to the technical field of external trigger mechanism, and specifically refers to a method and system for constructing multiple trigger mechanisms based on external data to execute smart contracts in a blockchain network. Background technique [0002] The term smart contract was coined in 1995 by the prolific interdisciplinary legal scholar Nick Szabo. He defines a smart contract as: a set of promises defined in digital form, including an agreement on which contract participants can implement these promises. [0003] However, the definition of the above-mentioned smart contract has not been fully realized. The main reason is that there is a lack of a basic environment in which the execution process is free from external interference and the results of the execution can be effectively preserved without being tampered with. This situation has been improved with the developm...

AI Technical Summary

Problems solved by technology

[0012] This transaction needs to be initiated by an individual from the real world. If the individual conflicts with the original smart contract interests, it may cause no one to activate the contract again, resulting in the interruption of the smart contract, which means The promise embodied in the smart contract cannot be fully executed

Uncertainty factors brought by man-made links bring great risks to the complete and reliable execution of smart contracts

[0013] Secondly, the external data is entered into the smart contract in the form of data by the second transaction, and the smart contract has no way or way to check the data at point 505, only to calculate it

This also means that the smart contract cannot judge whether the situation entered in the 504th place actually happened, so that the smart contract will execute according to the malicious wrong data to produce wrong results that are contrary to the actual situation

[0014] 2. It does not support the ability to acquire and respond to external data of the system:

[0015] The reason why existing smart contracts cannot be used for external data, such as the agreed time conditions mentioned in point 1 above, and the event conditions of the Shanghai Stock Exchange Index, is that the current smart contract mechanism is only designed for data in the system. Acquisition, without designing a way to obtain external data from the system, it is impossible to establish the corresponding capabilities

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