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Paper Abstract and Keywords
Presentation 2021-10-08 09:40
[Invited Lecture] Probabilistic Analysis on Mining Time in Private Blockchain Networks
Xuan Chen, Kien Nguyen, Hiroo Sekiya (Chiba Univ.) NS2021-77
Abstract (in Japanese) (See Japanese page) 
(in English) Proof-of-Work (PoW) is a widespread consensus algorithm to generate new blocks in blockchain networks. PoW is to calculate a mathematic puzzle, which is regulated by a difficulty value. Given the properties of the cryptographic hash function utilized in PoW, miners apply an enumerate strategy to find the answers. Therefore, the mining time follows an exponential distribution. This work implements private blockchain networks on different devices, where the difficulty value is dynamically adjusted according to the computational power. We use a probabilistic method to analyze the mining time, which reveals the variation of difficulty value during PoW algorithm execution. The mining time eventually follows similar exponential distribution on different devices.
Keyword (in Japanese) (See Japanese page) 
(in English) Proof of Work / Mining / Difficulty / Exponential distribution / Ethereum / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 185, NS2021-77, pp. 51-56, Oct. 2021.
Paper # NS2021-77 
Date of Issue 2021-09-29 (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 NS2021-77

Conference Information
Committee NS  
Conference Date 2021-10-06 - 2021-10-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network architecture (Overlay, P2P, Ubiquitous network, Scale-free network, Active network, NGN/NwGN, IoT, Edge computing, Next generation packet transport (High speed Ethernet, IP over WDM, Multi-service package technology, MPLS), Grid, etc. 
Paper Information
Registration To NS 
Conference Code 2021-10-NS 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Probabilistic Analysis on Mining Time in Private Blockchain Networks 
Sub Title (in English)  
Keyword(1) Proof of Work  
Keyword(2) Mining  
Keyword(3) Difficulty  
Keyword(4) Exponential distribution  
Keyword(5) Ethereum  
1st Author's Name Xuan Chen  
1st Author's Affiliation Chiba University (Chiba Univ.)
2nd Author's Name Kien Nguyen  
2nd Author's Affiliation Chiba University (Chiba Univ.)
3rd Author's Name Hiroo Sekiya  
3rd Author's Affiliation Chiba University (Chiba Univ.)
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Date Time 2021-10-08 09:40:00 
Presentation Time 25 
Registration for NS 
Paper # IEICE-NS2021-77 
Volume (vol) IEICE-121 
Number (no) no.185 
Page pp.51-56 
#Pages IEICE-6 
Date of Issue IEICE-NS-2021-09-29 

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