Hitachi, Ltd.

Nishio Yamada

Yusuke Jin

Takayuki Nagai

Jun Nemoto

Tatsuya Sato

Yasunori Hashimoto

Kaiho Fukuchi

Yuri Okada

Tomokazu Sakai

Suguru Nagahora

A transaction has: lock release information; and a lock release condition. A first transaction has a record with a plurality of successive lock release conditions. A lock release condition of the first transaction includes public key information pertaining to an electronic signature different from the electronic signature of the issuer of the transaction. An asset/fund settlement device posts the first transaction in a ledger and determines executability of a second transaction issued after the first transaction by comparing, in accordance with the order of the plurality of successive lock release conditions, the lock release information and the lock release condition which have been posted in the ledger to lock release information and a lock release condition in a ledger of the second transaction. Thus, in a DvP transaction using electronic settlement, locked assets are safely returned, and deterioration in liquidity of assets/funds is avoided when the transaction is not established.

Electronic payment system and electronic payment method

A trail recording system includes a trail recording apparatus and a report receiving apparatus, the trail recording apparatus: holds a plurality of measurement values measured by a sensor, and trail data generated based on at least some of the plurality of measurement values; and transmits the trail data to the report receiving apparatus, the report receiving apparatus transmit, to the trail recording apparatus, a request indicating the trail data of the sensor that is an audit target, the trail recording apparatus transmits, to the report receiving apparatus, out of the plurality of measurement values, measurement values that have been used to generate the indicated trail data, the report receiving apparatus verifies, based on the trail data and the measurement values received from the trail recording apparatus, whether the at least some of the plurality of measurement values measured by the sensor are tampered is verified.

Trail recording system and data verification method

Operation management with consistent policies and timings between nodes even in a situation where there are a plurality of administrators in the distributed ledger system is realized. In an operation management systemfor a distributed ledger systemcomprising a plurality of nodes, each of at least two or more predetermined nodes in the plurality of nodes manages an operation smart contractfor operation management of the distributed ledger system with a distributed ledger, when at least one node in the two or more predetermined nodes receives a transaction, the node which has received the transaction judges whether or not a type of the transaction is the operation smart contract, and, based on the judgment result, executes the operation smart contract

Operation management method, operation management system, and operation management program

Disclosed is a business model generation support method for proposing a new business model. A computer receives a first business model and a second business model, and adds, for the plurality of business models, a first activity and a second activity which are respectively performed by the first and second business models to first information that predefines jobs performed by the business models as activities. Next, the computer adds the relation between a first data item and the first activity and the relation between a second data item and the second activity to second information that predefines the relation between the activities and the data items used for performing the activities. The first and second data items are used for performing the first and second activities, respectively. Then, the computer searches the second information to obtain a third activity including both the first data item and the second data item.

Growing community of inventors

Tokyo, Japan

Nishio Yamada