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A credible timestamp system based on a block chain

A time stamp, blockchain technology, applied in the direction of digital data protection, can solve the problems of system time tampering, disputes, time error, etc., to achieve the effect of ensuring validity

Active Publication Date: 2019-05-07
HANGZHOU QULIAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual scenarios, because the hardware clock is inaccurate or the system time is maliciously tampered with, the time obtained by the program running on the device is incorrect, which affects the normal operation of the business system and even causes disputes in legal-related scenarios

Method used

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  • A credible timestamp system based on a block chain
  • A credible timestamp system based on a block chain
  • A credible timestamp system based on a block chain

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Embodiment Construction

[0022] The purpose and effect of the present invention will become more obvious by describing the present invention in detail according to the accompanying drawings and specific embodiments.

[0023] A trusted timestamp system based on blockchain, including the following modules:

[0024] 1) Timestamp initialization module, when the blockchain is initially built, it is initialized according to the time of the standard time server as the timestamp of each node, and each time a new node is added, the timestamp of the node is based on the time stamp of all existing nodes Stamp, obtained according to the statistical calculation of the specified algorithm;

[0025] 2) Timestamp audit module, the blockchain automatically executes the timestamp audit module every once in a while, and queries and compares the timestamps of all current nodes. If the timestamp of a node deviates greatly from the normal time, the The node is marked as a "malicious node" and a notification of the synchro...

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Abstract

The invention discloses a credible timestamp system realized by utilizing a block chain, and relates to the technical field of blockchain technology, smart contracts and electronic signatures. The system comprises a timestamp initialization module, a timestamp auditing module, a timestamp acquisition module and an electronic file signature module. According to the method, the authenticity and tamper resistance of the timestamps are ensured by virtue of the block chain technology, the timestamps requested to each block chain node at the same time are credible and the same, and meanwhile, the timestamps consented by the block chain are added into the electronic file, so that the effectiveness of the timestamps of the electronic file is ensured.

Description

technical field [0001] The present invention relates to the technical fields of blockchain technology, smart contracts and electronic signatures, in particular to a trusted timestamp system based on blockchain. Background technique [0002] Blockchain technology, the blockchain is essentially a decentralized distributed database, the database is jointly maintained by all nodes on the blockchain, through the consensus algorithm to ensure that a small number of nodes do evil is invalid, that is, only modifying the database of a small number of nodes is Data on the blockchain cannot be tampered with. [0003] Smart contracts, smart contracts on the blockchain are computer programs that are automatically executed when certain conditions are met. Once deployed on the blockchain, the execution logic cannot be tampered with. [0004] Electronic signature technology, electronic signature refers to the electronic signature of dictionary documents through cryptography technology, inv...

Claims

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Application Information

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IPC IPC(8): G06F21/64
Inventor 李伟邱炜伟梁秀波李启雷尹可挺金鹏
Owner HANGZHOU QULIAN TECH CO LTD
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