# US 2018/0323964 A1 · Blockchain Generation Apparatus, Blockchain Generation Method, Blockchain Verification Apparatus, Blockchain Verification Method, and Program

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2018/0323964 A1
- Document ID: US20180323964A1
- Status: Published application
- Kind: A1
- Application number: 15/770,851
- Filed: 2016-11-08
- Published: 2018-11-08
- Earliest claimed: 2015-11-09
- Assignees: Nippon Telegraph and Telephone Corporation
- Applicants: Nippon Telegraph and Telephone Corporation
- Inventors: Hiroki Watanabe; Akihito Akutsu; Yasuhiko Miyazaki; Atsushi Nakadaira; Shigeru Fujimura; Junichi Kishigami
- Web page: https://patentgrep.com/patent/US20180323964A1

## CPC

- H04L 9/0637: {Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]}
- G06F 16/27: Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
- G06Q 20/065: {using e-cash}
- G06Q 20/223: {based on the use of peer-to-peer networks}
- H04L 9/3239: {involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD}
- G06Q 2220/00: Business processing using cryptography
- H04L 9/50: {using hash chains, e.g. blockchains or hash trees}
- H04L 2209/56: Financial cryptography, e.g. electronic payment or e-cash
- Y02P 80/15: On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

This block chain generation device 1 is provided with: a synchronizing means 121 which acquires shared data 111 which includes block chain data 112 and transaction data 113 not contained in the block chain 112; a transaction pattern amount calculation means 124 which calculates the transaction pattern amount of a creator from the transaction data in the block chain data 112 that relates to an identifier of the creator who is using the block chain generation device 1; a block generation condition confirmation means 125 which, on the basis of the transaction pattern amount, determines whether or not the creator is qualified to generate new block chain data; and a block chain generation means 126 which, if the block generation condition confirmation means 125 determines that the creator is qualified, refers to the shared data 111 to attempt generation of a new block chain.

## Claims

### 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 transaction pattern count calculator that calculates the number of transaction patterns for a generating party using the blockchain generation apparatus, 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 checker that determines whether the generating party is qualified to generate the new blockchain data, based on the number of transaction patterns calculated by the transaction pattern count calculator; and
a blockchain generator that tries to generate the new blockchain data by referring to the shared data if the block generation condition checker determines that the generating party is qualified.

### Claim 2 (depends on 1)

The blockchain generation apparatus according to claim 1, wherein
the number of transaction patterns is an index of trustworthiness of the generating party.

### Claim 3 (depends on 1)

The blockchain generation apparatus according to claim 1, wherein
the number of transaction patterns is a sum of the numbers of identifiers of transaction partners in respective combinations of the identifiers of the transaction partners in the transaction datasets related to the identifier of the generating party.

### Claim 4 (depends on 1)

The blockchain generation apparatus according to claim 1, wherein
the number of transaction patterns is the number of unique identifiers of transaction partners in the transaction datasets related to the identifier of the generating party.

### Claim 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 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.

### Claim 6

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.

### Claim 7

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.

### Claim 8 (depends on 1)

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