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ブロックチェーンの可能性と不可能性 〜 人間の「自由」をめぐる技術闘争 〜 / Blockch...
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Kenji Saito
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June 13, 2017
Technology
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ブロックチェーンの可能性と不可能性 〜 人間の「自由」をめぐる技術闘争 〜 / Blockchains and Technological Conflicts around Human Liberty
2017年6月13日(火)、慶應義塾大学三田キャンパスにて開催された SFC フォーラム 2017年度 第1回 研究セミナーでの講演で使用したスライドです。
Kenji Saito
PRO
June 13, 2017
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Transcript
∼ ∼ SFC
[email protected]
∼ — 2017-06-13 – p.1/28
( ) SFC ( ) CSO (Chief Science Officer) CEO
1993 M.Eng ( ) 2006 ( ) SFC 16 P2P 2011 → ( ) ∼ — 2017-06-13 – p.2/28
NEO — (2009) : SF NEO : New Economic Order
( ) http://grsj.jp/neo.pdf (CC-BY-SA 3.0) science fiction prototyping (1) (2) ∼ — 2017-06-13 – p.3/28
WIRED vol.25 The Power of Blockchain (2016) : 5 Family
( ) ∼ — 2017-06-13 – p.4/28
SFC ⇒ ∼ — 2017-06-13 – p.5/28
(by Satoshi Nakamoto) Satoshi ( ) (block; , ) (chain;
) ∼ — 2017-06-13 – p.6/28
( ) P2P ( ) (double spending) ⇒ ( )
← ∼ — 2017-06-13 – p.7/28
/DLT(Distributed Ledger Technology) ( ) Bitcoin ( ) Open Assets
Protocol (OAP) ( ) Ethereum ( ) Enterprise Ethereum Alliance (↓ ) ( ) Hyperledger (Linux Foundation) Fabric (IBM), Sawtooth (Intel), Iroha ( ) Corda (R3) ∼ — 2017-06-13 – p.8/28
/ (1) 2,100 cm3 1 1cm3 10 12.5cm3 ⇒ ⇒
( ) ∼ — 2017-06-13 – p.9/28
/ (2) ( ) ( ) ( ) ( )
→ ( ) ∼ — 2017-06-13 – p.10/28
∼ ( ) ∼ — 2017-06-13 – p.11/28
∼ ( ) ∼ — 2017-06-13 – p.12/28
/DLT(Distributed Ledger Technology) End-to-End ( ) ( ) ∼ —
2017-06-13 – p.13/28
∼ — 2017-06-13 – p.14/28
⇒ ( ) : ∼ — 2017-06-13 – p.15/28
⇒ = ∼ — 2017-06-13 – p.16/28
⇒ : ∼ — 2017-06-13 – p.17/28
(2014.2-2016.1) 2 ∼ — 2017-06-13 – p.18/28
⇒ ∼ — 2017-06-13 – p.19/28
vs. ⇒ 1 ∼ — 2017-06-13 – p.20/28
⇒ ∼ — 2017-06-13 – p.21/28
⇒ SegWit( ) ( ) ∼ — 2017-06-13 – p.22/28
Ether Ether Ether . . . BTC Everledger, Factom OAP
⇒ ∼ — 2017-06-13 – p.23/28
The DAO SegWit ∼ — 2017-06-13 – p.24/28
The DAO ( ) The DAO Split ( ) 360
ETH (50∼60 ) (2016/6/17) ( → ) ( → ; ) ( ) (2016/7/20 ) ∼ — 2017-06-13 – p.25/28
SegWit SegWit (Segrageted Witness) (1) ( ) (2) ( )
( ) → SegWit ( ) → MASF (Miner-Activated Soft Fork) vs. UASF (User-Activated Soft Fork) UASF SegWit 2017 8 1 UASF ∼ — 2017-06-13 – p.26/28
SegWit (MASF ) 2016 100 SegWit (95% ) (MASF )
. . . ∼ — 2017-06-13 – p.27/28
( : The DAO ) ( : SegWit) = ∼
— 2017-06-13 – p.28/28