分割ルートハッシュ方式を用いたブロックチェーン利用トレーサビリティ管理システム

抄録

Traceability management service utilizing blockchain guarantees the tamper resistance of data. However, it is a problem to balance the performance of writing to blockchain and the data confidence of other company’s information when data of multiple vendors are mixed at the time of data disclosure. In the proposed method, we obtain split root hashes which are divided by manufacturer from multiple traceability data generated at a certain site, and multiple split root hashes are put into one transaction in blockchain. It is confirmed that write performance of approximately 3,000 transaction/sec could be achieved by reducing the number of writing to blockchain, and that the information of other companies at the time of data disclosure could be concealed.