| Presentation | 2020-03-05 Block Interval Adjustment Toward Fair Proof-of-Work Blockchains Reiki Kanda, Kazuyuki Shudo, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose a finer measure of fairness than existing one. Next, we propose a method of adjusting the block interval that keeps fairness. Existing fairness measure is rough because it is fair as long as any nodes can start mining by the time a node mines a block. But even in time, there is a difference in the time left for mining and it is still unfair. So we propose a finer measure of fairness. Next, we propose a method for adjusting the block interval to maintain a certain level of fairness. Most current Proof-of-Work blockchains fix block interval and they do not consider fairness. In contrast with them, ourproposed technique adjusts block interval based on fork incidence rate. It maintains fairness even if the network condition changes. Simulations confirm that our technique maintains fairness even though Internet performance changes. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Bitcoin / Blockchain / Proof of Work / Fairness |
| Paper # | NS2019-206 |
| Date of Issue | 2020-02-27 (NS) |
| Conference Information | |
| Committee | NS / IN |
|---|---|
| Conference Date | 2020/3/5(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Royal Hotel Okinawa Zanpa-Misaki |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Chair | Yoshikatsu Okazaki(NTT) / Takuji Kishida(NTT-AT) |
| Vice Chair | Akihiro Nakao(Univ. of Tokyo) / Kenji Ishida(Hiroshima City Univ.) |
| Secretary | Akihiro Nakao(Osaka Pref Univ.) / Kenji Ishida(NTT) |
| Assistant | Shinya Kawano(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Network Systems / Technical Committee on Information Networks |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Block Interval Adjustment Toward Fair Proof-of-Work Blockchains |
| Sub Title (in English) | |
| Keyword(1) | Bitcoin |
| Keyword(2) | Blockchain |
| Keyword(3) | Proof of Work |
| Keyword(4) | Fairness |
| 1st Author's Name | Reiki Kanda |
| 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 | 2020-03-05 |
| Paper # | NS2019-206 |
| Volume (vol) | vol.119 |
| Number (no) | NS-460 |
| Page | pp.pp.169-174(NS), |
| #Pages | 6 |
| Date of Issue | 2020-02-27 (NS) |