Abstract: A method for interconnecting data between a plurality of blockchain networks according to an embodiment of the present invention includes receiving a request of an interconnecting transaction for interconnecting data between a plurality of blockchain networks, querying information of an ongoing or scheduled transaction through the plurality of blockchain networks in response to the request, and selectively determining any one of a plurality of interconnecting schemes as an interconnecting scheme of the interconnecting transaction with reference to the queried information, and performing the interconnecting transaction according to the determined interconnecting scheme.

Abstract: A method for managing transaction is performed in a blockchain-based computing system and includes receiving a request for processing a first individual transaction from a client terminal, generating a batch transaction by aggregating a plurality of individual transactions including the first individual transaction, processing the generated batch transaction via a blockchain network, such that a status record associated with the batch transaction is recorded in the blockchain, and providing the client terminal with an identifier of the batch transaction and index information on the first individual transaction, wherein the status record associated with the batch transaction includes a first status record associated with the first individual transaction, and wherein the index information on the first individual transaction is determined based on a location of the first status record in the status record.

Abstract: A data management system according to an embodiment of this invention includes a blockchain node configured to store on-chain data on blockchain and a service server, upon receiving a service request associated with the original data from a client, i) accessing off-chain data stored in a storage node or recording off-chain data in the storage node according to the service request, and ii) sending a transaction proposal to the blockchain node for a record associated with the service request to be stored in the blockchain.

Abstract: An off-chain data sharing system according to an embodiment of the present invention includes a first storage node to store off-chain data, a blockchain node to store a ledger that records permission information of the off-chain data, and a data stream hub to relay data transmission and reception between the first storage node and a second storage node requesting the off-chain data by referring to the permission information.

Abstract: A method for interconnecting data between a plurality of blockchain networks according to an embodiment of the present invention includes receiving a request of an interconnecting transaction for interconnecting data between a plurality of blockchain networks, querying information of an ongoing or scheduled transaction through the plurality of blockchain networks in response to the request, and selectively determining any one of a plurality of interconnecting schemes as an interconnecting scheme of the interconnecting transaction with reference to the queried information, and performing the interconnecting transaction according to the determined interconnecting scheme.

Abstract: A data management system according to an embodiment of this invention includes a blockchain node configured to store on-chain data on blockchain and a service server, upon receiving a service request associated with the original data from a client, i) accessing off-chain data stored in a storage node or recording off-chain data in the storage node according to the service request, and ii) sending a transaction proposal to the blockchain node for a record associated with the service request to be stored in the blockchain

Abstract: A method for managing transaction is performed in a blockchain-based computing system and includes receiving a request for processing a first individual transaction from a client terminal, generating a batch transaction by aggregating a plurality of individual transactions including the first individual transaction, processing the generated batch transaction via a blockchain network, such that a status record associated with the batch transaction is recorded in the blockchain, and providing the client terminal with an identifier of the batch transaction and index information on the first individual transaction, wherein the status record associated with the batch transaction includes a first status record associated with the first individual transaction, and wherein the index information on the first individual transaction is determined based on a location of the first status record in the status record.

Abstract: A system for supporting reflection of transactions between blockchain networks. includes a first bridge node which receives transaction data as to a first transaction within a source blockchain network, generates a transaction reflection message based on the received transaction data, and sends the generated transaction reflection message to a second bridge node related to a target blockchain network, and the second bridge node which generates a second transaction corresponding to the first transaction based on the generated transaction reflection message and processes the generated second transaction within the target blockchain network.