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Paper Abstract and Keywords
Presentation 2022-05-13 09:25
Reduction methods of amount of data in blockchain node
Masaki Obayashi, Takeshi Ogawa (TDU) NS2022-14
Abstract (in Japanese) (See Japanese page) 
(in English) The amount of data that a node in a blockchain needs to store is increasing rapidly in proportion to the total number of transactions processed by the blockchain. As the amount of the data increases, it may be difficult to keep participating in the blockchain because of its storage capacity. If the number of nodes in a blockchain decrease, serious problems such as unstable consensus formation in the blockchain will arise.
In this paper, novel reduction methods of amount of data in blockchain node are proposed. In the proposed methods, a block chain is divided into block-groups forming a block-group-chain. Each node stores only the latest blocks and block-group-chain information and some block-groups that are distributed and held. As the result, the amount of data on the node can be significantly reduced compared to the conventional methods. It is also shown that the proposed method can significantly reduce the amount of data for both full nodes and light nodes.
Keyword (in Japanese) (See Japanese page) 
(in English) Blockchain / Ethereum / Merkle Tree / / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 16, NS2022-14, pp. 29-33, May 2022.
Paper # NS2022-14 
Date of Issue 2022-05-05 (NS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF NS2022-14

Conference Information
Committee NS  
Conference Date 2022-05-12 - 2022-05-13 
Place (in Japanese) (See Japanese page) 
Place (in English) Rakuyu Kaikan, Kyoto Univ. + Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) High level protocol, Networking technologies (IP and high-layer routing/filtering, Multicast, Quality/Routing control), IP network application technologies (P2P, P4P, Overlay, SIP, NGN), Network system related technologies (System configuration, Interface, Architecture, Hardware/Software/Middleware), Security, Blockchain etc. 
Paper Information
Registration To NS 
Conference Code 2022-05-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Reduction methods of amount of data in blockchain node 
Sub Title (in English)  
Keyword(1) Blockchain  
Keyword(2) Ethereum  
Keyword(3) Merkle Tree  
1st Author's Name Masaki Obayashi  
1st Author's Affiliation Tokyo Denki University (TDU)
2nd Author's Name Takeshi Ogawa  
2nd Author's Affiliation Tokyo Denki University (TDU)
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Speaker Author-1 
Date Time 2022-05-13 09:25:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2022-14 
Volume (vol) vol.122 
Number (no) no.16 
Page pp.29-33 
Date of Issue 2022-05-05 (NS) 

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