Centralized oracle machine matched with intelligent contract application, information output method and system

Abstract

The invention provides a centralized oracle machine matched with an intelligent contract application, an information output method and a system. The method comprises the following steps: acquiring information of an external information acquisition source; acquiring a preset comparison rule, and comparing the information of the external information acquisition source by utilizing the preset comparison rule to obtain screening information; obtaining an information format corresponding to the smart contract application, and performing formatting reconstruction processing on the screened information to obtain formatted information; obtaining an oracle machine private key, and encrypting the formatted information by using the oracle machine private key to obtain first encrypted information; obtaining a public key of the smart contract application, and encrypting the first encrypted information by using the public key to obtain second encrypted information; and outputting the second encrypted information to the smart contract application. The method has the advantages that 1, the data source is safe and reliable; 2, the data accuracy is high; 3, the data providing efficiency is relatively high; and 4, the method is suitable for more scenes.

Description

technical field [0001] The present invention relates to the technical field of oracle machines, in particular to a centralized oracle machine, an information output method and a system that cooperate with smart contract applications. Background technique [0002] In the existing technology, the decentralized oracle has several disadvantages: [0003] 1) There are many and miscellaneous sources of information: [0004] a. Single oracle (single model): For situations where the transaction structure is simple or the asset size is small, a single oracle is generally used. When a single oracle machine collects information, it often faces a single source of information, narrow information coverage, insufficient information update speed, and insufficient information accuracy, resulting in very low authenticity, accuracy, and effectiveness of the information it collects. hard to get guarantees; [0005] b. Oracle network (multiple models): For assets or transactions with complex ...

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Problems solved by technology

[0006] 2) There are loopholes in the information screening mechanism: In order to ensure fairness and justice, the decentralized oracle machine often uses the miners' voting mechanism to determine the final information to be used, which can easily lead to three possible consequences: a. The information provided by the oracle machine In the case of limited sample sources and information, it is vulnerable to attacks, resulting in information tampering, resulting in information distortion; b. When miners face different information sources and update speeds, voting results may be wrong; c. Miners The number of nodes is small, which is vulnerable to human manipulation and affects the authenticity of voting results

[0007] 3) There are deviations in the results: the oracle machine is a system that brings many benefits, but because there are institutional loopholes in the source of information and the screening of information, it will interfere with the gathering of trusted sources

The oracle problem is the conflict between third-party oracles and untrusted smart contract execution, causing economic losses

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