公开(公告)号：US12293356B2

公开(公告)日：2025-05-06

申请号：US17838846

申请日：2022-06-13

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yuji Unagami ,  Junji Michiyama ,  Junichiro Soeda ,  Motoji Ohmori ,  Tetsuji Fuchikami ,  Yuuki Hirose ,  Naohisa Nishida ,  Masahiro Taguchi

IPC: G06Q20/38 ,  G06F16/27

Abstract: A control method includes: obtaining first transaction data that includes a first variable indicating first information on a first contract made between a first user and a second user, and a second variable set to a predetermined value indicating second information is undetermined; storing the first transaction data into the distributed ledger; executing storing processing of reading out the second variable, and storing it into a rewritable storage in a server; obtaining second transaction data that includes a third variable indicating third information on a second contract made between the first user and a third user, and a change command for changing the second variable, based on the third variable; storing the second transaction data into the distributed ledger; and executing change processing of changing, according to the change command, the second variable from the predetermined value, after the second transaction data is stored into the distributed ledger.

公开(公告)号：US12120176B2

公开(公告)日：2024-10-15

申请号：US17590220

申请日：2022-02-01

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Masahiro Taguchi ,  Yuji Unagami ,  Tetsuji Fuchikami ,  Yuuki Hirose

IPC: H04L67/1074 ,  H04L9/08 ,  H04L67/104 ,  H04L67/1095 ,  H04L67/56 ,  H04L9/00

CPC classification number: H04L67/108 ,  H04L9/0825 ,  H04L67/1055 ,  H04L67/1095 ,  H04L67/56 ,  H04L9/50 ,  H04L2209/463

Abstract: A control method includes: receiving transaction data that includes (i) peer information used for connecting a first peer among peers in a P2P system to another peer among the peers and (ii) a signature added to the peer information by the first peer; verifying the received transaction data using the signature included in the transaction data; and storing the transaction data into the distributed ledger when the verifying is successful.