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.:
Date of Patent:
Sep. 22, 2020
Filed:
Mar. 02, 2020
Alibaba Group Holding Limited, George Town, KY;
Yize Li, Hangzhou, CN;
Xinying Yang, Hangzhou, CN;
Yuan Zhang, Hangzhou, CN;
Benquan Yu, Hangzhou, CN;
Wenyuan Yan, Hangzhou, CN;
Alibaba Group Holding Limited, George Town, Grand Cayman, KY;
Abstract
This disclosure relates to blockchain-type data storage. In one aspect, a method includes receiving, by a database server, multiple second data records. Each second data record includes a first data record having a user identifier and a digital signature of the first data record. Hash values of the second data records are determined. In response to a blockchain-type block generation condition being satisfied, the database server determines two or more second data records to be written in a data block. An Nth data block that includes a hash value and a block height is generated. N is a sequence number of the Nth data block in a sequence of data blocks. When N>1, generating the Nth data block includes determining the hash value for the Nth data block based on the hash values of the two or more second data records and a hash value of a (N−1)th data block.