A cross-chain transaction processing method and apparatus, an electronic device, and a storage medium are provided, which belong to the field of blockchain technologies. The method includes: receiving a cross-chain transaction request of a terminal; running a first service contract on a first blockchain based on the cross-chain transaction request; executing, on the first blockchain through the first service contract, a first transaction event of a cross-chain transaction, running a first cross-chain contract on the first blockchain, and determining to execute, on a second blockchain, a second transaction event of the cross-chain transaction; storing first cross-chain transaction data to the first blockchain through the first service contract; obtaining second cross-chain transaction data from the second blockchain; and sending a transaction completion response to the terminal through the first service contract and the first cross-chain contract.

An electronic device of a first user is configured to: connect with a second electronic device of a second user of the plurality of electronic devices over a first peer-to-peer wireless network link when the second electronic device is within a communicable range of the first electronic device; receive from the second electronic device, a second unique code generated by the second electronic device, the second unique code including a second unique identifier of the second electronic device; store on the first electronic device: the second unique identifier; information associated with the proximity of the second electronic device; and information associated with the time when the second electronic device is within the communicable range of the first electronic device; and display a notification on the first electronic device when the second unique identifier is downloaded from a web server to the first electronic device.

A traffic planning platform may receive information related to a traffic flow including a traffic bandwidth to transport through a network with various network devices interconnected by links. The traffic planning platform may generate a traffic plan by assigning the traffic flow to a set of the links that includes network resources connecting a source of the traffic flow to a destination of the traffic flow. The traffic planning platform may render a visualization of the traffic plan, wherein the visualization includes a user interface (e.g., a diagram, an animation, and/or the like) in which geometric shapes that represent the source, the peer link, and the destination are connected by bands that represent the tunnel and the external route and further in which the geometric shapes and the bands each have a first visual property and a second visual property based on the traffic bandwidth of the traffic flow.

A traffic planning platform may receive information related to a traffic flow including a traffic bandwidth to transport through a network with various network devices interconnected by links. The traffic planning platform may generate a traffic plan by assigning the traffic flow to a set of the links that includes network resources connecting a source of the traffic flow to a destination of the traffic flow. The traffic planning platform may render a visualization of the traffic plan, wherein the visualization includes a user interface (e.g., a diagram, an animation, and/or the like) in which geometric shapes that represent the source, the peer link, and the destination are connected by bands that represent the tunnel and the external route and further in which the geometric shapes and the bands each have a first visual property and a second visual property based on the traffic bandwidth of the traffic flow.

A system and process for applying access groups for controlling data access, by a processor device. The process receives from a user a request to access data associated with a person from a file system, whereby the request invokes at least one software method. Next method interception is performed by matching the at least one software method. Group membership of the user and at least one group membership of the person is accessed. Determining if each of the following conditions of i) the user is a member of a specific group and ii) the specific group contains the person are verified. In response to the conditions being verified, the process sends the data to a user device to display to the user, otherwise denying the request to access data. Each group can have one or more criteria, which add patients to that group based on the conditions of those criteria.

Systems, methods, and other embodiments associated with distributed primary identifier management in a multi-master database system are described. One embodiment includes: Receiving a request to add a new master node to a multi-master database environment. Retrieving the next available master node number from a master node counter for the database environment. Generating a numeric base for primary identifiers of data objects of the new master node by deriving high order bits of the numeric base from the retrieved master node number. Configuring the new master node to assign the next unassigned number in a sequence of numbers beginning with the numeric base as the primary identifier for each data object created by the new master node. Add the new master node to the database environment. In one embodiment, the numeric base is generated by replacing the leading bits of the primary identifier range with the reversed the binary equivalent of the node number of the new master node.

According to an embodiment of the disclosure, an electronic device configuring a first block node included in a blockchain network may store a partial ledger including a part of a full ledger regarding the blockchain network, may determine whether data necessary for executing a first smart contract regarding a transaction requested to be performed is stored in a first database, based on a result of the determining, may acquire node information including information regarding at least one block node that stores the data from the third block node through a communication circuit, and may acquire the data from the second block node or the third block node, based on the node information, and may execute the first smart contract.

A method performed by a computing device for controlling a P2P connection according to an embodiment of the present disclosure includes obtaining network information of a current path for transmitting and receiving data, calculating requested data quality of the current path by using the network information, and changing a network path to an alternative path by using previously stored data quality history information of the alternative path when a difference between a predetermined highest data quality and the requested data quality of the current path is equal to or greater than a reference value.

A vehicle configuration and activity history tracking system and method. A first vehicle configuration and history blockchain is read from a first node in a vehicle configuration and history blockchain network comprising a plurality of nodes. A second vehicle configuration and history blockchain is read from a second node in the plurality of nodes of the vehicle configuration and history blockchain network. The first vehicle configuration and history blockchain is compared to the second vehicle configuration and history blockchain to determine whether the first vehicle configuration and history blockchain is valid. A new maintenance operation on the vehicle or a new modification of the vehicle is initiated using the first vehicle configuration and history blockchain in response to a determination that the first vehicle configuration and history blockchain is valid.

A vehicle configuration and activity history tracking system and method. A first vehicle configuration and history blockchain is read from a first node in a vehicle configuration and history blockchain network comprising a plurality of nodes. A second vehicle configuration and history blockchain is read from a second node in the plurality of nodes of the vehicle configuration and history blockchain network. The first vehicle configuration and history blockchain is compared to the second vehicle configuration and history blockchain to determine whether the first vehicle configuration and history blockchain is valid. A new maintenance operation on the vehicle or a new modification of the vehicle is initiated using the first vehicle configuration and history blockchain in response to a determination that the first vehicle configuration and history blockchain is valid.