Presentation 2017-10-26
[Poster Presentation] Distribution ledger management using cluster division in blockchain
Yudai Kaneko, Takuya Asaka,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Blockchain is the fundamental system of bitcoin running on non-structured P2P networks. This con-struct a practical distributed consensus system with fault tolerance and sustainability by all participating nodeshaving the same transaction ledger and using an distributed consensus algorithm called PoW, do calculation workcalled mining. However, scalability problem is becoming serious due to the nature of the blockchain. As the datasize of the ledger increases, the storage load of all the participating nodes increases. This causes the low performancenode to loave, and there is possibility that fraud risk increases, because most of the system components of havingblockchain and mining concentrate on the company and community nodes. In order to solve these problems, inthis paper, we propose a method to decentralize having nodes and mining nodes by clustering the nodes that haveblockchain data and the nodes that do PoW work. As a result, we con rm that the performance in the blockchaindata size possessed by each node improves.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) P2P / blockchain / problem of generals Byzantine / distributed consensus
Paper # NS2017-98
Date of Issue 2017-10-19 (NS)

Conference Information
Committee NS
Conference Date 2017/10/26(2days)
Place (in Japanese) (See Japanese page)
Place (in English) I-site nanba
Topics (in Japanese) (See Japanese page)
Topics (in English) Network Architecture (Overlay, P2P, Ubiquitous NW, Scale-free NW, Active NW, NGN/NwGN), Next Generation Packet Transport (High-speed Ethernet, IP over WDM, Multi-Service Packet Technologies, MPLS), Grid, etc.
Chair Hideki Tode(Osaka Pref. Univ.)
Vice Chair Yoshikatsu Okazaki(NTT)
Secretary Yoshikatsu Okazaki(Kyushu Inst. of Tech.)
Assistant Kenichi Kashibuchi(NTT)

Paper Information
Registration To Technical Committee on Network Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) [Poster Presentation] Distribution ledger management using cluster division in blockchain
Sub Title (in English)
Keyword(1) P2P
Keyword(2) blockchain
Keyword(3) problem of generals Byzantine
Keyword(4) distributed consensus
1st Author's Name Yudai Kaneko
1st Author's Affiliation Tokyo Metropolitan University(TMU)
2nd Author's Name Takuya Asaka
2nd Author's Affiliation Tokyo Metropolitan University(TMU)
Date 2017-10-26
Paper # NS2017-98
Volume (vol) vol.117
Number (no) NS-262
Page pp.pp.47-52(NS),
#Pages 6
Date of Issue 2017-10-19 (NS)