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

Patent metadata

Field	Value
Publication number	US-2019058590-A1
Application number	US-201615770803-A
Country	US
Kind code	A1
Filing date	Nov 8, 2016
Priority date	Nov 9, 2015
Publication date	Feb 21, 2019
Grant date	—

Abstract

The blockchain generation apparatus 1 includes: a parameter calculator 122 that identifies a parameter type to be used for linkage of the new block, based on block approval method data 114 , and calculates a value for the identified parameter type based on transaction datasets which are related to an identifier of a generating party; a block generation condition checker 125 that determines whether the generating party is qualified to generate the new blockchain data, based on the value calculated by the parameter calculator 122 ; and a blockchain generator 126 that tries to generate the new blockchain by referring to the shared data when the block generation condition checker 125 determines that the generating party is qualified. An identifier of the blend pattern included in the block approval method data 114 specifies a combination of the plurality of parameter types that conflict with each other.

First claim

1 . A blockchain generation apparatus that generates 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 apparatus comprising:
a synchronizer that acquires shared data which includes the blockchain data and transaction datasets not included in the blockchain data; a parameter calculator that
identifies a parameter type to be used for linkage of the new block, based on block approval method data specifying a blend pattern of a plurality of parameter types used for determination of presence or absence of qualification regarding linkage of a plurality of blocks in the blockchain data, and
calculates a value for the identified parameter type based on transaction datasets which are among the transaction datasets in the blockchain data and are related to an identifier of a generating party using the blockchain generation apparatus;
a block generation condition checker that determines whether the generating party is qualified to generate the new blockchain data, based on the value calculated by the parameter calculator; and a blockchain generator that tries to generate the new blockchain data by referring to the shared data when the block generation condition checker determines that the generating party is qualified, wherein an identifier of the blend pattern included in the block approval method data specifies a combination of the plurality of parameter types that conflict with each other.

2 . The blockchain generation apparatus according to claim 1 , wherein
the block approval method data specifies a blend pattern in which a first parameter type is repeated a first number of times and thereafter a second parameter type which conflicts with the first parameter type is repeated a second number of times.

3 . The blockchain generation apparatus according to claim 1 , wherein
the block approval method data specifies a blend pattern in which a combination of a predetermined number of successive parameter types includes at least one first parameter type and at least one second parameter type.

4 . The blockchain generation apparatus according to claim 3 , wherein
the predetermined number is the number of blocks necessary for guaranteeing a true completion of a transaction for a certain block.

5 . 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 identifying a parameter type to be used for linkage of the new block, based on block approval method data specifying a blend pattern of a plurality of parameter types used for determination of presence or absence of qualification regarding linkage of a plurality of blocks in the blockchain data; the computer calculating a value for the identified parameter type based on transaction datasets which are among the transaction datasets in the blockchain data and are related to an identifier of a generating party using the computer; the computer determining whether the generating party is qualified to generate the new blockchain data, based on the value calculated by the calculation step; 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, wherein an identifier of the blend pattern included in the block approval method data specifies a combination of the plurality of parameter types that conflict with each other.

6 . A blockchain verification apparatus that verifies blockchain data which is a chain of blocks each including transactional datasets generated by a plurality of transaction generation apparatuses, the blockchain verification apparatus comprising:
a synchronizer that acquires shared data which includes the blockchain data; a block approval method verifier that identifies a parameter type to be used for linkage of the block based on block approval method data specifying a blend pattern of a plurality of parameter types used for determination of presence or absence of qualification regarding linkage of a plurality of blocks in the blockchain, and determines whether the blockchain data is generated based on the identified parameter type; a parameter calculator that calculates a value for the parameter type identified by the block approval method verifier, based on transaction datasets which are among the transaction datasets in the blockchain data and are related to an identifier of a generating party using an apparatus that generated the blockchain data; a block generation condition verifier that determines whether the generating party is qualified to generate the blockchain data, based on the value calculated by the parameter calculator; and a blockchain verifier that approves the blockchain data if the block approval method verifier determines that the blockchain data is generated based on the identified parameter type, and if the block generation condition verifier determines that the generating party is qualified to generate the blockchain data, wherein an identifier of the blend pattern included in the block approval method data specifies a combination of the plurality of parameter types that conflict with each other.

7 . A blockchain verification method for verifying blockchain data which is a chain of blocks each including transactional datasets generated by a plurality of transaction generation apparatuses, the blockchain verification method comprising the steps of:
a computer acquiring shared data which includes the blockchain data; the computer identifying a parameter type to be used for linkage of the block based on block approval method data specifying a blend pattern of a plurality of parameter types used for determination of presence or absence of qualification regarding linkage of a plurality of blocks in the blockchain, and determining whether the blockchain data is generated based on the identified parameter type; the computer calculating a value for the identified parameter type, based on transaction datasets which are among the transaction datasets in the blockchain data and are related to an identifier of a generating party using an apparatus that generated the blockchain data; the computer determining whether the generating party is qualified to generate the blockchain data, based on the value for the identified parameter type; and the computer approving the blockchain data if it is determined that the blockchain data is generated based on the identified parameter type, and if it is determined that the generating party is qualified to generate the blockchain data, wherein an identifier of the blend pattern included in the block approval method data specifies a combination of the plurality of parameter types that conflict with each other.

8 . A program that causes a computer to function as the apparatus according to claim 1 .

Assignees

• Nippon Telegraph & Telephone

Inventors

• Watanabe Hiroki
• Akutsu Akihito
• Miyazaki Yasuhiko
• Nakadaira Atsushi
• Fujimura Shigeru
• Kishigami Junichi

Classifications

• G06Q20/223

  based on the use of peer-to-peer networks · CPC title

• G06Q20/065

  using e-cash · CPC title

• H04L9/321 Primary

  involving a third party or a trusted authority · CPC title

• G06Q20/0658 Primary

  e-cash managed locally · CPC title

• H04L9/3247

  involving digital signatures · CPC title