Node and method for sharing data

A system on a blockchain network, the system comprising:

• a first node;
• a second node;
• and
• a third node, wherein
• the first node includes a first memory and first circuitry,
• the first memory including a first private area and a first public area, wherein
• the first private area is accessible by an entity involved in a specific transaction and having an access right,
• the first public area is accessible by any entity,
• the first private area stores first contract related data including a transaction price of an asset or a ratio corresponding to the transaction price of the asset, and
• the first public area stores power related data including power generation information,
• the first circuitry is configured to transmit the power related data and the first contract related data to the second node and the third node on the blockchain network every predetermined time to share the power related data and the first contract related data,
• the second node includes a second memory and second circuitry,
• the second memory includes a second private area and a second public area,
• the second circuitry is configured to
• store data related to electric power having been allocated to a consumer by supply-demand balance control in the second public area and second contract related data in the second private area, and
• transmit the data related to electric power having been allocated and the second contract related data to the first node and the third node every predetermined time to share the data related to electric power having been allocated and the second contract related data,
• the third node includes a third memory and third circuitry,
• the third memory includes a third private area and a third public area, and
• the third circuitry is configured to
• store data related to electric power being consumed in the third public area, and
• transmit the data related to electric power being consumed to the first node and the second node every predetermined time to share the data related to electric power being consumed.