Samsung Electronics Co., Ltd.

Woongah Yoon

Hun Sung Kim

Wooup Kwon

Seungmin Ha

Jinsu Jo

Gyuhyun Shin

Byeongyun Oh

An electronic device may include a memory storing a partial ledger including a part of a full ledger for a blockchain network, and at least one processor configured to generate an ending block as a block chained after the transaction block. The ending block includes an ending hash value of a transaction block and signature data and the signature data includes the ending hash value signed with a private key. The ending block may be chained after the transaction block. The ending block may be stored in the memory.

Electronic device including partial ledger and method in blockchain network

An electronic device constituting a first blockchain node included in a blockchain network may generate an encryption key corresponding to a transaction based on obtaining a transaction generation request, transmit information of the encryption key to at least one blockchain node related to the transaction, encrypt first data stored in the partial ledger among input data required to execute a first smart contract of the transaction based on the encryption key, upload the first data to a data server included in the blockchain network, download second data encrypted based on the encryption key from the data server, the second data being data not stored in the partial ledger among the input data, decrypt the second data based on the encryption key, and execute the first smart contract based on the first data and the decrypted second data.

Electronic device having partial ledger in blockchain network and operating method thereof

An electronic device constituting a first block node included in a blockchain network of the disclosure is provided. The electronic device performs, in response to an input of requesting a transaction, obtaining first input data, output data, and a first identification value indicating a unique value capable of identifying a first smart contract, validating a blockchain application, forwarding a public key for a private key and an input data request to the second block node, based on the validation result, receiving, from the second block node, second input data encrypted with the public key and a second identification value indicating a unique value capable of identifying a second smart contract, and transmitting transaction data including the first input data and the output data to the server node, based on the comparison result of the first identification value and the second identification value.

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Suwon-si, South Korea

Woongah Yoon