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ブロックチェーン概論 / Overview of Blockchains
Kenji Saito
PRO
October 13, 2017
Technology
0
420
ブロックチェーン概論 / Overview of Blockchains
2017年10月13日(金)、Clip ニホンバシにて開催したブロックチェーンアカデミー「ブロックチェーン概論」にて使用したスライドです。
Kenji Saito
PRO
October 13, 2017
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Transcript
CSO / SFC
[email protected]
— — 2017-10-13 – p.1/39
( ) SFC ( ) CSO (Chief Science Officer) 1993
M.Eng ( ) 2006 ( ) SFC 17 P2P 2011 → ( ) — — 2017-10-13 – p.2/39
— — 2017-10-13 – p.3/39
(by Satoshi Nakamoto) Satoshi ( ) (block; , ) (chain;
) — — 2017-10-13 – p.4/39
( ) P2P ( ) (double spending) ⇒ ( )
← — — 2017-10-13 – p.5/39
1) 2) 3) ⇒ ⇒ — — 2017-10-13 – p.6/39
/DLT(Distributed Ledger Technology) ( ) Bitcoin ( ) Open Assets
Protocol (OAP) ( ) Ethereum ( ) ( ) Enterprise Ethereum Alliance (↓ ) (DLT) ( ) Hyperledger (Linux Foundation) Fabric (IBM/DAH), Sawtooth (Intel), Iroha ( ) Corda (R3) — — 2017-10-13 – p.7/39
(1) — — — 2017-10-13 – p.8/39
(2) — RSA, DSA, ECDSA ( DSA; ), etc. RSA
← ( ) — — 2017-10-13 – p.9/39
( ) 1. 10 ( ) 2. 3. 1 —
— 2017-10-13 – p.10/39
/DLT End-to-End ( ) ( ) — — 2017-10-13 –
p.11/39
( / ) EVM ( ) EVM (Ethereum Virtual Machine)
Gas ( CPU ) — — 2017-10-13 – p.12/39
— — 2017-10-13 – p.13/39
(Hyperledger ) ( ) ( ) ( ) IoT /
/ ( ) — — 2017-10-13 – p.14/39
: . . . : Proof of Existence, Everledger, Factom,
. . . (OP_RETURN ) ( ) ( ) — — 2017-10-13 – p.15/39
( KVS DHT) — — 2017-10-13 – p.16/39
— — 2017-10-13 – p.17/39
(2014 2 ∼2016 1 ) 2 → 2 2 →
— — 2017-10-13 – p.18/39
vs. — — 2017-10-13 – p.19/39
The DAO ( ) The DAO Split ( ) 360
ETH (50∼60 ) (2016/6/17) ( → ) ( → ; ) ( ) (2016/7/20 ) — — 2017-10-13 – p.20/39
— — 2017-10-13 – p.21/39
: ⇒ ⇒ — — 2017-10-13 – p.22/39
Ether Ether Ether . . . BTC Everledger, Factom OAP
⇒ — — 2017-10-13 – p.23/39
3 1. ( : UTXO ) ⇒ ( ) 2.
( : ) ⇒ 3. ( : ) TX ⇒ 2 3 — — 2017-10-13 – p.24/39
— — 2017-10-13 – p.25/39
( ) (by ) (since 1984) ( ) ( )
( ) . . . ( ) — — 2017-10-13 – p.26/39
( ) ( ) ( ) ( ) ( )
( ) (by ) — — 2017-10-13 – p.27/39
Q. ( ) ( = / = ) ⇒ —
— 2017-10-13 – p.28/39
( ) ( ) ( ) — — 2017-10-13 –
p.29/39
( ) / / — — 2017-10-13 – p.30/39
— 1. ( ) 2. ( ) 3. ( )
— — 2017-10-13 – p.31/39
→ 30 : × — — 2017-10-13 – p.32/39
OS (2007) — — 2017-10-13 – p.33/39
Amazon Go → — — 2017-10-13 – p.34/39
( JPY ) MUFG J S (“Cause-Oriented Economy”) ⇒ —
— 2017-10-13 – p.35/39
(4 ) ( ) — — 2017-10-13 – p.36/39
( ) → (AI ) → ← → → /
/ — — 2017-10-13 – p.37/39
10/18, 10/25, 11/1, 11/8 ( ) 1 2 11/15, 11/22,
11/29, 12/7( ), 12/13, 12/20 ( ) 2.0 — — 2017-10-13 – p.38/39
— — 2017-10-13 – p.39/39