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公开(公告)号：US20200382278A1
公开(公告)日：2020-12-03
申请号：US16770897
申请日：2018-12-10
Applicant: CHINA UNIONPAY CO., LTD.
Inventor： Yuzhuang XU , Yu ZHOU , Tao ZHU , Xiang YAO
Abstract: The present disclosure relates to a smart contract-based data transfer method, comprising the steps of: a data source encrypting data to be transferred based on a first mechanism to form encrypted data, and sending the encrypted data to a smart contract terminal; the smart contract terminal decrypting the encrypted data based on a second mechanism corresponding to the first mechanism to form the decrypted data, and processing the decrypted data by using at least one logic unit to form the resulting data; and the smart contract terminal sending the resulting data to a data-related party; wherein the at least one logic unit executes an instruction set to implement a contract logic, and the instruction set is stored in a blockchain.
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Patent Agency Ranking
公开(公告)号：US20240320668A1
公开(公告)日：2024-09-26
申请号：US18579235
申请日：2022-02-18
Applicant: CHINA UNIONPAY CO., LTD.
Inventor： Yuzhuang XU
IPC: G06Q20/38
CPC classification number: G06Q20/389
Abstract: A transaction processing method includes, when receiving a transaction request sent by a blockchain, sending a corresponding transaction pre-processing request to an off-chain payment system, so that the off-chain payment system performs a corresponding transaction pre-processing operation, to obtain a transaction pre-processing outcome; receiving the transaction pre-processing outcome sent by the off-chain payment system, and sending the transaction pre-processing outcome to the blockchain; and when it is detected that the blockchain has generated an on-chain transaction outcome corresponding to the transaction request, sending a transaction instruction note to the off-chain payment system, where the transaction instruction note is used to instruct the off-chain payment system to perform a corresponding off-chain processing operation to obtain an off-chain transaction outcome corresponding to the transaction request. The on-chain transaction outcome is obtained by the blockchain that performs an on-chain processing operation corresponding to the transaction request based on the transaction pre-processing outcome.
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公开(公告)号：US20230125083A1
公开(公告)日：2023-04-27
申请号：US17760497
申请日：2021-01-12
Applicant: CHINA UNIONPAY CO., LTD.
Inventor： Yuzhuang XU , Tao ZHU , Yu ZHOU
Abstract: A method for authorizing a blockchain data access on a blockchain platform includes: obtaining from a third-party institution a data access request containing a user ID of data access, a data scope, and a random number of a signature, which is generated by the third-party institution after receiving a random number sent by a client terminal and signing on the received random number; performing a verification on the random number of the signature and the data scope; and after the verification is passed, sending data ciphertext corresponding to the user ID to the third-party institution, such that the third-party institution decrypts the data ciphertext using a data secret key sent by the client terminal.
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公开(公告)号：US20240163121A1
公开(公告)日：2024-05-16
申请号：US18575811
申请日：2022-08-04
Applicant: CHINA UNIONPAY CO., LTD.
Inventor： Yan HUANG , Qinglin HU , Yu ZHOU , Weihuai LIU , Jingxiu HU , Xu LE , Yuzhuang XU , Hehe WANG , Zhaoye XU
Abstract: Embodiments of the disclosure provide a blockchain consensus method, apparatus, device, and storage medium and relate to the field of blockchain technology. The method includes determining, from a plurality of sub-blockchains, a target sub-blockchain to which a target block belongs, and adding the target block to the target sub-blockchain, where the target block is generated based on transaction data or obtained by synchronizing with other nodes; obtaining, from the plurality of sub-blockchains, a sequence of valid blocks for each of the plurality of sub-blockchains, where each sequence of valid blocks includes at least one valid block; and globally ranking the obtained valid blocks based on a logical clock corresponding to each of the obtained valid blocks, to obtain a global blockchain.
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公开(公告)号：US20220327531A1
公开(公告)日：2022-10-13
申请号：US17595767
申请日：2020-09-23
Applicant: CHINA UNIONPAY CO., LTD.
Inventor： Hehe WANG , Yuzhuang XU , Tao ZHU , Yu ZHOU
Abstract: The present disclosure provides a method and a device for control of blockchain data access based on a smart contract. The method includes obtaining, by a blockchain node, an access operation request of an institution, the access operation request including a transaction identifier of a transaction to be accessed, according to the transaction identifier, determining a blockchain state corresponding to the transaction identifier, the blockchain state including a hash value of the transaction corresponding to a last time change of the blockchain state, according to the hash value of the transaction corresponding to the last time change in the blockchain state and an identifier of the institution, performing data access control on the institution, obtaining control result, and transmitting the control result to the institution.
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公开(公告)号：US20220005004A1
公开(公告)日：2022-01-06
申请号：US17281459
申请日：2020-01-10
Applicant: CHINA UNIONPAY CO., LTD.
Inventor： Yuzhuang XU , Yu ZHOU
Abstract: The present disclosure provides a method and a device for blockchain transaction tracing. The method includes acquiring information of a transaction-to-be-traced, where the information of the transaction-to-be-traced includes an input value of the transaction-to-be-traced; according to the input value of the transaction-to-be-traced and a Bloom filter corresponding to each block in a blockchain system, determining a leaf node of the transaction-to-be-traced, where the Bloom filter stores an output value of a transaction contained in each block; and according to the leaf node of the transaction-to-be-traced, generating a tracing path of the transaction-to-be-traced.
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