Abstract: A non-transitory computer-readable recording medium having recorded thereon a computer program, which when executed by a computer, configures the computer to perform a message providing method may be provided. The method may include receiving message data including a message and metadata from a server, determining whether at least one keyword is included in the message, and updating chat room data of a reception chat room to include reception information of the message including the keyword based on results of the determining and the metadata, and displaying a chat room list based on the chat room data, the chat room list including (1) reception chat rooms having the message with the at least one keyword together with (2) inclusion information corresponding thereto, which indicates inclusion of the at least one keyword in the message.

Abstract: A non-transitory computer-readable recording medium having recorded thereon a computer program, which when executed by a computer, configures the computer to perform a message providing method may be provided. The method may include receiving message data including a message and metadata from a server, determining whether at least one keyword is included in the message, and updating chat room data of a reception chat room to include reception information of the message including the keyword based on results of the determining and the metadata, and displaying a chat room list based on the chat room data, the chat room list including (1) reception chat rooms having the message with the at least one keyword together with (2) inclusion information corresponding thereto, which indicates inclusion of the at least one keyword in the message.

Abstract: A transaction processing system may include: a plurality of leaf chains including a first leaf chain and a second leaf chain, the first leaf chain and the second leaf chain including a first leaf chain manager contract and a second leaf chain manager contract, respectively; a root chain comprising a root chain manager contract for the root chain, a first leaf chain contract for the first leaf chain, and a second leaf chain contract for the second leaf chain; and at least one relayer located between the root chain and the plurality of leaf chains, and configured to process a remittance request from the first leaf chain to the second leaf chain.

Abstract: A transaction processing system may include: a plurality of leaf chains including a first leaf chain and a second leaf chain, the first leaf chain and the second leaf chain including a first leaf chain manager contract and a second leaf chain manager contract, respectively; a root chain comprising a root chain manager contract for the root chain, a first leaf chain contract for the first leaf chain, and a second leaf chain contract for the second leaf chain; and at least one relayer located between the root chain and the plurality of leaf chains, and configured to process a remittance request from the first leaf chain to the second leaf chain.

Abstract: The message providing method may include receiving message data including a message and metadata from a server, determining whether at least one keyword is included in the message, and updating chat room data of a reception chat room to include reception information of the message including the keyword based on results of the determining and the metadata, and displaying a chat room list based on the chat room data, the chat room list including (1) reception chat rooms having the message with the at least one keyword together with (2) inclusion information corresponding thereto, which indicates inclusion of the at least one keyword in the message.

Abstract: A system includes a memory configured to store computer-readable instructions; and one or more processors configured to execute the computer-readable instructions such that the one or more processors are configured to, receive a message from a first electronic device connected to a communication session for an instant messaging service, determine hidden attribute information for playing content corresponding to a keyword using the keyword further included in the message, if the message includes a desired character, add the determined hidden attribute information to the message, and transmit the message to which the hidden attribute information is added, to a second electronic device connected to the communication session through the communication session.

Abstract: A non-transitory computer-readable recording medium having recorded thereon a computer program, which when executed by a computer, configures the computer to perform a message providing method may be provided. The method may include receiving message data including a message and metadata from a server, determining whether at least one keyword is included in the message, and updating chat room data of a reception chat room to include reception information of the message including the keyword based on results of the determining and the metadata, and displaying a chat room list based on the chat room data, the chat room list including (1) reception chat rooms having the message with the at least one keyword together with (2) inclusion information corresponding thereto, which indicates inclusion of the at least one keyword in the message.

Abstract: A system includes a memory configured to store computer-readable instructions; and one or more processors configured to execute the computer-readable instructions such that the one or more processors are configured to, receive a message from a first electronic device connected to a communication session for an instant messaging service, determine hidden attribute information for playing content corresponding to a keyword using the keyword further included in the message, if the message includes a desired character, add the determined hidden attribute information to the message, and transmit the message to which the hidden attribute information is added, to a second electronic device connected to the communication session through the communication session.