Abstract: Provided are a blockchain data processing method and apparatus, a device, and a readable storage medium. By storing a data type information table in a relational database in advance, the data type information table is used for storing storage information of all the data types, and the storage information includes a table corresponding to the data type, a mapping relationship between the service field of the Value of the data type and a table field in the corresponding table, and a data format of the Value of the data type. A data type of the Value is determined when the Key-Value data needs to be stored; and a target table corresponding to the data type of the Value is determined and the Key-Value data is written into the target table according to the data type information table.

Abstract: A preparation method of a gallium oxide device based on high-temperature annealing technology and a gallium oxide device are provided. The preparation method includes: preparing a first barrier layer on a surface of a gallium oxide wafer to block an oxygen atmosphere; implementing a patterning process for regulating impurities of the gallium oxide wafer on the barrier layer, a process depth of the patterning process not exceeding a thickness of the barrier layer; annealing the gallium oxide wafer subjected to above treatment in the oxygen atmosphere; removing the barrier layer; and removing a surface layer of the gallium oxide wafer with the barrier layer lifted off. Problems that a local region of a gallium oxide material cannot be treated alone and net carrier concentration in a selective region of the gallium oxide material cannot be regulated with high-temperature annealing technology in the oxygen atmosphere in related art are solved.

Abstract: A method and an apparatus are provided. The method may include: receiving a query request and signature information of the query request sent from a first node in a blockchain other than a current blockchain, where there is a proxy node of the first node in the current blockchain, and the query request includes a query content and a storage number of a public key of the first node in the current blockchain; acquiring the public key of the first node from the current blockchain based on the storage number of the public key of the first node in the current blockchain; acquiring query data indicated by the query content from the current blockchain, in response to the signature information of the query request passing verification by the public key of the first node; and feeding back a query result to the first node based on the query data.

Abstract: Provided are a blockchain data processing method and apparatus, a device, and a readable storage medium. By storing a data type information table in a relational database in advance, the data type information table is used for storing storage information of all the data types, and the storage information includes a table corresponding to the data type, a mapping relationship between the service field of the Value of the data type and a table field in the corresponding table, and a data format of the Value of the data type. A data type of the Value is determined when the Key-Value data needs to be stored; and a target table corresponding to the data type of the Value is determined and the Key-Value data is written into the target table according to the data type information table.

Abstract: A method and device for synchronizing node data. The method comprises: determining a target block height according to a local log file used for synchronizing blockchain data of a blockchain system (201); sending a data synchronization request to a target node on the basis of the target block height (202); and in response to receiving update data sent by the target node, writing the update data into a local storage area (203). The method improves the synchronization efficiency of lagging nodes in the blockchain system, and saves network resources.

Abstract: The invention, which discloses a blockchain consensus method, apparatus and system, relates to the technical field of computers.