ブロックチェーン通貨の安定化に向けた方法 / How to Make a Blockchain Currency Stable

2018年3月28日(水)、某所のセミナーで使用したスライドです。

Transcript

1. SFC ( ) ks91@sfc.wide.ad.jp — 2018-03-28 – p.1/8
2. ( ) Kenji Saito, Mitsuru Iwamura, “How to Make a Digital Currency on a Blockchain Stable” https://arxiv.org/abs/1801.06771 — 2018-03-28 – p.2/8
3. → ⇓ 1. (PoW) 2. 3. — 2018-03-28 – p.3/8
4. ( ) 0 10 20 30 40 0 5 10 15 20 25 30 35 Block Interval (minutes) Density (Frequency) 1x hash rate 2x hash rate 0.8x hash rate — 2018-03-28 – p.4/8
5. 100 1 2 2 5 4 5 4 80% 2016 ( ) -1% — 2018-03-28 – p.5/8
6. Transaction 2 Transaction 1 input input Transaction 3 to A: to B: to A: to A: signs input input 12.5 BTC 30 BTC 12.5 BTC input output (25 BTC) output (30 BTC) output (12.5 BTC) output (7.5 BTC) user A user B Unspent TX Output — 2018-03-28 – p.6/8
7. Transaction 2 Transaction 1 input input Transaction 3 to A: to B: to A: input input input era E coinage 20% depreciation 10% depreciation 5% depreciation as of this time 12.5 12.5 era E’ coinage output (23.75) output (10) output (12.5) to B: to A: output (20) output (2.5) during era E’’ era E’ coinage — 2018-03-28 – p.7/8
8. UTXO -1% 100 OK — 2018-03-28 – p.8/8