Blockchain Generation Apparatus, Blockchain Generation Method, Blockchain Verification Apparatus, Blockchain Verification Method, and Program

A blockchain generation method for generating new blockchain data by linking a new block to blockchain data which is a chain of blocks each including transactional datasets generated by a plurality of transaction generation apparatuses, the blockchain generation method comprising the steps of:

• a computer acquiring shared data which includes the blockchain data and transaction datasets not included in the blockchain data;
• the computer calculating the number of transaction patterns for a generating party using the computer, based on transaction datasets which are in the transaction datasets in the blockchain data and are related to an identifier of the generating party;
• the computer determining whether the generating party is qualified to generate the new blockchain data, based on the number of transaction patterns for the generating party;
• and
• the computer trying to generate the new blockchain data by referring to the shared data when it is determined that the generating party is qualified to generate the new blockchain data.

A blockchain verification apparatus that verifies blockchain data which is a chain of blocks each including transaction datasets generated by a plurality of transaction generation apparatuses, the blockchain verification apparatus comprising:

• a synchronizer that acquires shared data including the blockchain data;
• a transaction pattern count calculator that calculates the number of transaction patterns for a generating party using an apparatus that generated the blockchain data, based on the transaction datasets which are in the blockchain data and are related to an identifier of the generating party;
• a block generation condition verifier that determines whether the generating party is qualified to generate the blockchain data, based on the number of transaction patterns calculated by the transaction pattern count calculator;
• and
• a blockchain verifier that approves the blockchain data when the block generation condition verifier determines that the generating party is qualified.

A blockchain verification method for verifying blockchain data which is a chain of blocks each including transaction datasets generated by a plurality of transaction generation apparatuses, the blockchain verification method comprising the steps of:

• a computer acquiring shared data including the blockchain data;
• the computer calculating the number of transaction patterns for a generating party using an apparatus that generated the blockchain data, based on the transaction datasets which are in the blockchain data and are related to an identifier of the generating party;
• the computer determining whether the generating party is qualified to generate the blockchain data, based on the number of transaction patterns for the generating party;
• and
• the computer approving the blockchain data when it is determined that the generating party is qualified to generate the blockchain data.