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Blockchain cross-chain query method, device, equipment and storage medium

A query method and blockchain technology, applied in the fields of devices, blockchain cross-chain query methods, equipment and storage media, can solve problems such as the inability of blockchain to achieve interconnection and hinder the ecological development of blockchain applications, etc. achieve the effect of reducing resource consumption

Active Publication Date: 2020-12-15
BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The data on the chain of the blockchain network is a data island, and different blockchains cannot be interconnected, which hinders the further development of the blockchain application ecology

Method used

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  • Blockchain cross-chain query method, device, equipment and storage medium
  • Blockchain cross-chain query method, device, equipment and storage medium
  • Blockchain cross-chain query method, device, equipment and storage medium

Examples

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Embodiment Construction

[0047] Exemplary embodiments of the present application are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present application to facilitate understanding, and they should be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

[0048] Figure 1a It is a schematic flow diagram of a blockchain cross-chain query method provided according to an embodiment of the present application. This embodiment is applicable to the situation where nodes in the source blockchain network query transactions in the target blockchain network. The blockchain cross-chain query method disclosed in this embodiment ...

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Abstract

This application discloses a blockchain cross-chain query method, device, device and storage medium, relates to the technical field of blockchain, and can be used for cloud computing and cloud services. The specific implementation plan is: in response to the cross-chain query transaction request initiated by the source blockchain network calling the cross-chain smart contract, obtain the original text of the target transaction to be queried and the Merkle certificate of the target block to which the target transaction belongs to from the target blockchain network Information; in a trusted execution environment, determine whether the target transaction is in the target block according to the Merkle proof information, and if so, sign the original text of the target transaction to obtain the signature data of the target transaction; call the cross-chain smart contract and send The network sends the original text of the target transaction and the signature data of the target transaction, and the source blockchain network verifies the signature data of the target transaction. If the signature verification is passed, the original text of the target transaction is used as the result of the cross-chain query. This application can reduce the resource consumption of cross-chain query.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to the field of blockchain technology, and in particular to a blockchain cross-chain query method, device, equipment and storage medium. Background technique [0002] Blockchain is a new application model of computer technologies such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. The blockchain has the characteristics of decentralization, non-tampering, traceability, traceability, collective maintenance, openness and transparency. These characteristics ensure the "honesty" and "transparency" of the blockchain, and lay the foundation for the creation of trust in the blockchain. [0003] The data on the chain of the blockchain network is a data island, and different blockchains cannot be interconnected, which hinders the further development of the blockchain application ecology. Cross-chain technology is used to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32H04L29/08H04L29/06G06Q20/38G06Q40/04G06F21/64
CPCH04L9/3247H04L9/3236G06Q20/3825G06Q40/04G06F21/64H04L67/562H04L67/133
Inventor 刘晓赫
Owner BAIDU ONLINE NETWORK TECH (BEIJIBG) CO LTD
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