| Presentation | 2022-06-23 Distributed Clock Synchronization Protocol for Proof of Stake Blockchain Yuya Miki, Kazuyuki Shudo, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In a Proof of Stake (PoS) blockchain, all nodes need to be able to recognize approximately synchronized clocks. A PoS blockchain relies on external clocks, and each node synchronizes its local clock according to an external clock using Network Time Protocol (NTP) or a similar protocol. However, this external dependence is undesirable because it reduces the autonomy, sustainability and trustless nature of the blockchain. This paper presents a clock synchronization protocol for slot-based PoS blockchains. The proposed protocol estimates the block propagation time to ensure that the synchronization is closer to that of a real-world clock. In addition, the proposed method considers the clock drift and clock adjustment frequency to achieve more accurate synchronization. Simulation experiments show that the proposed method can synchronize with a time that is closer to that of a real-world clock and with higher accuracy than existing methods. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Blockchain / Clock synchronization / Block propagation time / Ethereum |
| Paper # | IA2022-2,ICSS2022-2 |
| Date of Issue | 2022-06-16 (IA, ICSS) |
| Conference Information | |
| Committee | IA / ICSS |
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| Conference Date | 2022/6/23(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Univ. of Nagasaki |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Internet Security, etc. |
| Chair | Tomoki Yoshihisa(Osaka Univ.) / Katsunari Yoshioka(Yokohama National Univ.) |
| Vice Chair | Toru Kondo(Hiroshima Univ.) / Yuichiro Hei(KDDI Research) / Hiroshi Yamamoto(Ritsumeikan Univ.) / Kazunori Kamiya(NTT) / Takahiro Kasama(NICT) |
| Secretary | Toru Kondo(Osaka Univ.) / Yuichiro Hei(Kogakuin Univ.) / Hiroshi Yamamoto(NEC) / Kazunori Kamiya(KDDI labs.) / Takahiro Kasama(Okayama Univ.) |
| Assistant | Daisuke Kotani(Kyoto Univ.) / Ryo Nakamurai(Fukuoka Univ.) / Daiki Nobayashi(Kyushu Inst. of Tech.) / Keisuke Kito(Mitsubishi Electric) / Takeshi Sugawara(Univ. of Electro-Comm.) |
| Paper Information | |
| Registration To | Technical Committee on Internet Architecture / Technical Committee on Information and Communication System Security |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Distributed Clock Synchronization Protocol for Proof of Stake Blockchain |
| Sub Title (in English) | |
| Keyword(1) | Blockchain |
| Keyword(2) | Clock synchronization |
| Keyword(3) | Block propagation time |
| Keyword(4) | Ethereum |
| 1st Author's Name | Yuya Miki |
| 1st Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| 2nd Author's Name | Kazuyuki Shudo |
| 2nd Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| Date | 2022-06-23 |
| Paper # | IA2022-2,ICSS2022-2 |
| Volume (vol) | vol.122 |
| Number (no) | IA-85,ICSS-86 |
| Page | pp.pp.8-14(IA), pp.8-14(ICSS), |
| #Pages | 7 |
| Date of Issue | 2022-06-16 (IA, ICSS) |