Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for querying fabric blockchain ledger data

A chain ledger, blockchain technology, applied in the blockchain field, can solve the problems of subsequent transaction read and write failures, etc.

Active Publication Date: 2021-08-20
ALIPAY (HANGZHOU) INFORMATION TECH CO LTD +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the ordering of each transaction, it is possible that the execution of the previous transaction changes the value of a certain parameter, which makes the reading and writing of the subsequent transaction fail. Mark this follow-up transaction as " 0 ” to indicate that the transaction failed to execute

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for querying fabric blockchain ledger data
  • Method and device for querying fabric blockchain ledger data
  • Method and device for querying fabric blockchain ledger data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] Embodiments of this specification will be described below with reference to the accompanying drawings.

[0050] figure 2 A schematic diagram showing a Fabric blockchain query system according to an embodiment of this specification. Such as figure 2 As shown in , the query system includes user equipment 21 , management equipment 22 and Fabric block chain 23 . Among them, the user device 21 can be an off-chain device of the Fabric blockchain, which can be a user's device of the Fabric blockchain, a node device of other blockchains, or used to transfer messages between multiple blockchains The repeater equipment and the like are not limited here. The management device 22 provides the user device 21 with a query service for the ledger data of the Fabric blockchain. The management device 22 itself is a client node of the Fabric blockchain with authority to query ledger data, including a trusted execution environment (Trusted ExecutionEnvironment, TEE). The TEE may be,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of this description provides a method and device for querying Fabric blockchain ledger data. The method is executed by a client node in the Fabric blockchain, including: sending transaction proposals to the at least one endorsement node respectively, so The transaction proposal is used to request to query the first ledger data; the pre-execution result of the transaction proposal and the signature of the corresponding endorsement node on the pre-execution result are respectively received from the at least one endorsement node, wherein each pre-execution result Include the query results of the corresponding endorsement nodes; provide each pre-execution result and the corresponding signature to the TEE; determine the authenticity of each query result through the TEE.

Description

technical field [0001] The embodiment of this specification relates to the field of blockchain technology, and more specifically, to a method and device for querying Fabric blockchain ledger data. Background technique [0002] The Hyperledger Fabric blockchain (hereinafter referred to as the Fabric blockchain) is an enterprise-oriented consortium chain. The Fabric blockchain includes the following types of nodes: client nodes, peer (Peer) nodes, sorting (orderer) nodes, and so on. The peer nodes further include endorsement (Endorsor) nodes, management (Anchor) nodes, committer (Committer) nodes, and the like. The Fabric blockchain includes multiple channels, and each channel has its own closed ledger data and chaincode, which is the smart contract in the Fabric blockchain. Peers can choose which channels to join, and they can join a channel after being authenticated by peers already in the channel. The client node can initiate a transaction proposal to a channel in the Fa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/2458G06Q40/04H04L29/08
CPCG06F16/2471G06Q40/04H04L67/10
Inventor 余逸荣
Owner ALIPAY (HANGZHOU) INFORMATION TECH CO LTD