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公开(公告)号：US20220058184A1
公开(公告)日：2022-02-24
申请号：US17462308
申请日：2021-08-31
Applicant: Advanced New Technologies Co., Ltd.
Inventor： Yize Li , Xinying Yang , Yuan Zhang
IPC: G06F16/23 , G06F16/22 , G06F16/27 , G06F16/245
Abstract: Implementations of this specification provide service identifier-based data indexing. An example method performed by a data indexing apparatus of a centralized database service provider that stores data by using a blockchain-type ledger includes obtaining a service identifier and a service label of a data record, the service identifier uniquely identifying a service attribute of the data record, and the service label representing a type of the data record; determining location information of the data record in the blockchain-type ledger, the location information including a block height of a data block that includes the data record, and a positional offset of the data record in the data block that includes the data record; establishing a mapping relationship among the service identifier, the service label, and the location information; and writing the mapping relationship into an index for which a primary key is the service identifier.
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公开(公告)号：US10958441B2
公开(公告)日：2021-03-23
申请号：US16945677
申请日：2020-07-31
Applicant: Advanced New Technologies Co., Ltd.
Inventor： Xinying Yang , Benquan Yu , Yuan Zhang , Yize Li
Abstract: Implementations of this specification provide signature verification methods and apparatuses for a blockchain ledger. An example method includes receiving by a server, a signature verification instruction that comprises a verification object parameter and a hash value. The verification object parameter includes a third-party parameter, a platform parameter, or a time service certificate parameter, the verification object parameter indicates a type of a to-be-verified object, and the server is configured to store data by using the blockchain ledger. The server obtains the to-be-verified object based on the verification object parameter and the hash value. The type of the to-be-verified object includes a third-party digital signature, a server digital signature, or a time service certificate. The server sends the to-be-verified object to a client for verification by the client.
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公开(公告)号：US10924288B2
公开(公告)日：2021-02-16
申请号：US16925985
申请日：2020-07-10
Applicant: Advanced New Technologies Co., Ltd.
Inventor： Wenyuan Yan , Yuan Zhang , Xinying Yang , Benquan Yu , Yize Li
Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for managing blockchain-based centralized ledger systems. One of the methods includes transmitting individual timestamp requests for to-be-timestamped blocks in a blockchain to a trust time server independent from a blockchain-based centralized ledger system that stores data in the blockchain, the blockchain including a plurality of blocks storing transaction data, receiving respective timestamps and associated signatures for the to-be-timestamped blocks from the trust time server, and storing information of the respective timestamps and associated signatures for the to-be-timestamped blocks in respective timestamped blocks in the blockchain, any adjacent two of the timestamped blocks in the blockchain being anchored with each other.
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公开(公告)号：US10911251B2
公开(公告)日：2021-02-02
申请号：US16945707
申请日：2020-07-31
Applicant: Advanced New Technologies Co., Ltd.
Inventor： Xinying Yang , Yuan Zhang , Benquan Yu , Yize Li
Abstract: A computer-implemented method for performing authentication includes: determining, by a database server storing data in a blockchain ledger, a target ledger segment on which time service authentication is to be performed; generating a Merkle tree corresponding to the target ledger segment; determining a root hash of the Merkle tree, the root hash of the Merkle tree being based on a block hash of each data block in a set of one or more data blocks; executing a predetermined time capture process in a trusted execution environment to obtain a trusted time from an interface provided by a trusted time service organization; generating a digital signature for the trusted time and the root hash in the trusted execution environment; and generating a time service certificate including the trusted time, the root hash, and the digital signature.
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公开(公告)号：US11271760B2
公开(公告)日：2022-03-08
申请号：US16829866
申请日：2020-03-25
Applicant: Advanced New Technologies Co., Ltd.
Inventor： Xinying Yang , Benquan Yu , Yuan Zhang , Wenyuan Yan , Yize Li
Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for managing blockchain-based centralized ledger systems. One of the methods includes: transmitting a timestamp request for a to-be-timestamped block in a blockchain to a trust time server by a ledger server in a centralized ledger system that stores data in the blockchain, the trust time server being associated with a trust time authority and independent from the centralized ledger system, the blockchain including a plurality of blocks storing transaction data, receiving a timestamp and associated signature for the to-be-timestamped block from the trust time server by the ledger server, and storing information of the timestamp and the associated signature for the to-be-timestamped block in the blockchain by the ledger server.
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Patent Agency Ranking
公开(公告)号：US11108573B2
公开(公告)日：2021-08-31
申请号：US17164748
申请日：2021-02-01
Applicant: Advanced New Technologies Co., Ltd.
Inventor： Xinying Yang , Yuan Zhang , Benquan Yu , Yize Li
Abstract: A computer-implemented method for performing authentication includes: determining, by a database server storing data in a blockchain ledger, a target ledger segment on which time service authentication is to be performed; generating a Merkle tree corresponding to the target ledger segment; determining a root hash of the Merkle tree, the root hash of the Merkle tree being based on a block hash of each data block in a set of one or more data blocks; executing a predetermined time capture process in a trusted execution environment to obtain a trusted time from an interface provided by a trusted time service organization; generating a digital signature for the trusted time and the root hash in the trusted execution environment; and generating a time service certificate including the trusted time, the root hash, and the digital signature.
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公开(公告)号：US10936734B2
公开(公告)日：2021-03-02
申请号：US16945772
申请日：2020-07-31
Applicant: Advanced New Technologies Co., Ltd.
Inventor： Wenyuan Yan , Xinying Yang , Yuan Zhang , Yize Li , Benquan Yu
Abstract: A computer-implemented method includes: receiving, by a server storing one or more blockchain ledgers, an authorization request from a client, in which the authorization request includes a service end identifier and a user identifier; generating, based on the authorization request, a database authorization instruction corresponding to the authorization request and a ledger identifier corresponding to the authorization request; authorizing a service end corresponding to the service end identifier as a user in a blockchain ledger corresponding to the ledger identifier; configuring a permission value of the user in the blockchain ledger, in which the permission value determines a degree to which the service end can operate the blockchain ledger; and sending authorization information including the user identifier and the ledger identifier to the service end.
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公开(公告)号：US20210216534A1
公开(公告)日：2021-07-15
申请号：US17215255
申请日：2021-03-29
Applicant: Advanced New Technologies Co., Ltd.
Inventor： Yize Li , Xinying Yang , Yuan Zhang
Abstract: Implementations of this specification provide service identifier-based data indexing. An example method performed by a data indexing apparatus of a centralized database service provider that stores data by using a blockchain-type ledger includes obtaining a service identifier and a service label of a data record, the service identifier uniquely identifying a service attribute of the data record, and the service label representing a type of the data record; determining location information of the data record in the blockchain-type ledger, the location information including a block height of a data block that includes the data record, and a positional offset of the data record in the data block that includes the data record; establishing a mapping relationship among the service identifier, the service label, and the location information; and writing the mapping relationship into an index for which a primary key is the service identifier.
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公开(公告)号：US11057220B2
公开(公告)日：2021-07-06
申请号：US16945677
申请日：2020-07-31
Applicant: Advanced New Technologies Co., Ltd.
Inventor： Xinying Yang , Benquan Yu , Yuan Zhang , Yize Li
Abstract: Implementations of this specification provide signature verification methods and apparatuses for a blockchain ledger. An example method includes receiving by a server, a signature verification instruction that comprises a verification object parameter and a hash value. The verification object parameter includes a third-party parameter, a platform parameter, or a time service certificate parameter, the verification object parameter indicates a type of a to-be-verified object, and the server is configured to store data by using the blockchain ledger. The server obtains the to-be-verified object based on the verification object parameter and the hash value. The type of the to-be-verified object includes a third-party digital signature, a server digital signature, or a time service certificate. The server sends the to-be-verified object to a client for verification by the client.
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公开(公告)号：US20210194675A1
公开(公告)日：2021-06-24
申请号：US17195408
申请日：2021-03-08
Applicant: Advanced New Technologies Co., Ltd.
Inventor： Yuan Zhang , Xinying Yang , Yize Li
IPC: H04L9/06 , G06F16/901 , G06F16/9035
Abstract: This disclosure relates to blockchain-type storage of receipt data. In one aspect, a method includes obtaining a to-be-stored data record including a first service attribute. Execution information of the to-be-stored data record is determined. A previous data record is obtained from a blockchain-type ledger. The previous data record includes a second service attribute that is the same as the first service attribute. Each data block in the blockchain-type ledger includes a block header and a block body. A hash value of the previous data record is determined. A receipt record is generated. The receipt record includes the hash value of the previous data record and the execution information of the to-be-stored data record. The to-be-stored data record and the receipt record are written into a same block body in the blockchain-type ledger.
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