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Paper Abstract and Keywords
Presentation 2025-03-06 11:35
How Mode Selection in Compact Block Relay Affects Mining Revenue
Yuito Ueda, Akira Sakurai, Kazuyuki Shudo (Kyoto Univ.) NS2024-215
Abstract (in Japanese) (See Japanese page) 
(in English) In a public blockchain, such as Bitcoin, the economically rational behavior of participants should contribute to the security of the system as a whole, i.e., it should be incentive compatible.
Bitcoin employs a protocol called Compact Block Relay for block propagation, which operates in two modes: a low-bandwidth mode with reduced transmission volume but relatively lower speed, and a high-bandwidth mode with increased transmission volume and higher speed. From a security perspective, expanding the use of the high-bandwidth mode is desirable for the Bitcoin network. However, using the high-bandwidth mode incurs additional transmission costs for each miner, raising the question of whether it is incentive-compatible.

In this study, we investigated the impact of Compact Block Relay mode selection on each miner's revenue by simulation. Our simulation results showed that miners experience increased revenue when using the high-bandwidth mode to receive blocks. However, they incur losses when sending blocks in this mode, as the increased traffic does not lead to additional revenue.
This leads to the conclusion that, while the Bitcoin network benefits from miners adopting the high-bandwidth mode, individual miners have no incentive to do so, highlighting a shortcoming in Bitcoin’s incentive design.
Keyword (in Japanese) (See Japanese page) 
(in English) / / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 124, no. 419, NS2024-215, pp. 119-122, March 2025.
Paper # NS2024-215 
Date of Issue 2025-02-27 (NS) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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 NS2024-215

Conference Information
Committee IN NS  
Conference Date 2025-03-06 - 2025-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To NS 
Conference Code 2025-03-IN-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) How Mode Selection in Compact Block Relay Affects Mining Revenue 
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1st Author's Name Yuito Ueda  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Akira Sakurai  
2nd Author's Affiliation Kyoto University (Kyoto Univ.)
3rd Author's Name Kazuyuki Shudo  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
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Speaker Author-1 
Date Time 2025-03-06 11:35:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2024-215 
Volume (vol) vol.124 
Number (no) no.419 
Page pp.119-122 
#Pages 4 
Date of Issue 2025-02-27 (NS) 

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