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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12756550 B1

PDFFull Text
Date of Patent:
Oct. 06, 2026

Filed:

Sep. 02, 2022

Timestamp generation method and apparatus, and electronic device and storage medium

Applicants:

Electric Power Research Institute, China Southern Power Grid, Guangzhou, CN;

Guizhou Power Grid Co., Ltd., Guiyang, CN;

Inventors:

Yi Luo, Guangzhou, CN;

Jiaxiang Ou, Guiyang, CN;

Bin Qian, Guangzhou, CN;

Houpeng Hu, Guiyang, CN;

Yong Xiao, Guangzhou, CN;

Yanhong Xiao, Guiyang, CN;

Ji Wang, Guangzhou, CN;

Pengcheng Li, Guiyang, CN;

Mi Zhou, Guangzhou, CN;

Tianqiang Dong, Guiyang, CN;

Fan Zhang, Guangzhou, CN;

Xin Wu, Guiyang, CN;

Fusheng Li, Guangzhou, CN;

Zhenghao Gao, Guiyang, CN;

Xiaoming Lin, Guangzhou, CN;

Hangfeng Li, Guiyang, CN;

Jianlin Tang, Guangzhou, CN;

Zilong Ran, Guiyang, CN;

Xuan Luo, Guiyang, CN;

Wei Zhou, Guiyang, CN;

Yaodan Deng, Guiyang, CN;

Assignees:

ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWERR GRID, Guangzhou, CN;

GUIZHOU POWER GRID CO., LTD., Guiyang, CN;

Attorneys:

Yue (Robert) Xu

Apex Attorneys at Law, LLP

Primary Examiner:

Jeremy S Duffield

Int. Cl.
CPC ...
H04L 9/08 (2006.01); H04L 9/00 (2022.01); H04L 9/30 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
H04L 9/088 (2013.01); H04L 9/30 (2013.01); H04L 9/3236 (2013.01); H04L 9/3247 (2013.01); H04L 9/3297 (2013.01); H04L 9/50 (2022.05);
Abstract

A timestamp generation method and apparatus, and an electronic device and a storage medium, which are used for solving the technical problem of recorded information being easily leaked because a trusted third party is usually needed as a timestamp authority for recording in a traditional trusted timestamp generation method. In the present invention, the method comprises: acquiring a file record; calculating a hash value of the file record; sending the hash value to a random issuer, and receiving a signature result returned by the random issuer, wherein the signature result is generated after the random issuer signs the hash value and a receiving time, and the receiving time is the time when the random issuer receives the hash value; and storing the signature result in a blockchain as a timestamp of the file record.

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Luo, Yi. (2026). Timestamp generation method and apparatus, and electronic device and storage medium (U.S. Patent No. 12756550). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12756550

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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