User data exchange system

A user data exchange system comprising a data consumer, a data provider, a platformer, a first ID provider, and a second ID provider, and intermediating the exchange of user data between the data consumer and the data provider, wherein

• the first ID provider stores a first user ID of the user,
• the second ID provider stores a second user ID of the user,
• the data consumer transmits a first identifier issuance request to request issuance of a user identifier to the platformer via the first ID provider,
• the platformer, in response to receiving the first identifier issuance request, generates a first identifier, transmits the first identifier to the first ID provider, and stores the first identifier in association with a third identifier identifying the user,
• the first ID provider stores the first identifier in association with the first user ID,
• the data provider transmits a second identifier issuance request to request issuance of a user identifier to the platformer via the second ID provider,
• the platformer, in response to receiving the second identifier issuance request, generates a second identifier, transmits the second identifier to the second ID provider, and stores the second identifier in association with the third identifier,
• the second ID provider stores the second identifier in association with the second user ID,
• the data consumer transmits, to the first ID provider, a first ticket issuance request including information identifying user data to be requested and information identifying the data provider as a destination of a request for the data user,
• the first ID provider, in response to receiving the first ticket issuance request, transmits a second ticket issuance request including the information identifying the user data to be requested, the first identifier, and the information identifying the data provider as the destination of the request of the user data to the platformer,
• the platformer, in response to receiving the second ticket issuance request, generates a data request ticket including a ticket identifier, the third identifier corresponding to the first identifier, the information identifying the user data, and the information identifying the data provider as the destination, and transmits the ticket identifier to the data consumer via the first ID provider,
• the data consumer transmits a data acquisition request including the ticket identifier to the data provider,
• the data provider transmits a ticket reference request including the ticket identifier included in the data acquisition request to the platformer via the second ID provider or directly,
• the platformer, in response to receiving the ticket reference request, identifies the data request ticket corresponding to the ticket identifier included in the ticket reference request, and transmits the information identifying the user data and the second identifier corresponding to the third identifier to the data provider via the second ID provider or directly,
• the data provider transmits the user data to be requested and related to the user identified by the second user ID corresponding to the second identifier to the data consumer.