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ブロックチェーン概論 / Overview of Blockchains
Kenji Saito
PRO
November 10, 2017
Technology
0
110
ブロックチェーン概論 / Overview of Blockchains
2017年10月10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
November 10, 2017
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Transcript
CSO / SFC
[email protected]
— — 2017-10-13 – p.1/40
( ) SFC ( ) CSO (Chief Science Officer) 1993
M.Eng ( ) 2006 ( ) SFC 17 P2P 2011 → ( ) — — 2017-10-13 – p.2/40
— — 2017-10-13 – p.3/40
(by Satoshi Nakamoto) Satoshi ( ) (block; , ) (chain;
) — — 2017-10-13 – p.4/40
( ) P2P ( ) (double spending) ⇒ ( )
← — — 2017-10-13 – p.5/40
1) 2) 3) ⇒ ⇒ — — 2017-10-13 – p.6/40
/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), Tangle (IOTA) — — 2017-10-13 – p.7/40
Beyond Blockchain One (BBc-1) #JUDPJO ͦͷଞͷ ύϒϦοΫϨοδϟʔ BBc-1 ΦʔϓϯͰύϒϦοΫͳɹࢄϨοδϟʔ ࢄετϨʔδཧ
αʔόϨε ۃྗϝΠϯςφϯεϑϦʔ ͳ࣮ߦڥ ΞϓϦέʔγϣϯ ͦ ͷ ଞ ͞ · ͟ · ͳ Ξ ϓ Ϧ ͷ Մ ೳ ੑ σδλϧ௨՟ 4%, σδλϧΞηοτ "1* ##D ։ൃ߲ ҠߦΞγελϯτ Ҭ ௨ ՟ Ξ ϓ Ϧ ϙ Π ϯ τ Ξ ϓ Ϧ དྷ ྺ ূ ໌ Ξ ϓ Ϧ ʜ ॳظ λʔήοτ ॳظ λʔήοτ ॳظʹ͓͍ͯଘࡏূ໌Λґଘ ݸʑͷετϨʔδαʔϏε Մೳͳλʔήοτ 2017 10 31 (https://github.com/beyond-blockchain/bbc1) — — 2017-10-13 – p.8/40
(1) — — — 2017-10-13 – p.9/40
(2) — RSA, DSA, ECDSA ( DSA; ), etc. RSA
← ( ) — — 2017-10-13 – p.10/40
( ) 1. 10 ( ) 2. 3. 1 —
— 2017-10-13 – p.11/40
/DLT End-to-End ( ) ( ) — — 2017-10-13 –
p.12/40
( / ) EVM ( ) EVM (Ethereum Virtual Machine)
Gas ( CPU ) — — 2017-10-13 – p.13/40
— — 2017-10-13 – p.14/40
(Hyperledger ) ( ) ( ) ( ) IoT /
/ ( , ) — — 2017-10-13 – p.15/40
: . . . : Proof of Existence, Everledger, Factom,
. . . (OP_RETURN ) ( ) ( ) — — 2017-10-13 – p.16/40
( KVS DHT) — — 2017-10-13 – p.17/40
— — 2017-10-13 – p.18/40
(2009 1 ∼2017 11 ) 2 → 2 2 →
— — 2017-10-13 – p.19/40
vs. — — 2017-10-13 – p.20/40
The DAO ( ) The DAO Split ( ) 360
ETH (50∼60 ) (2016/6/17) ( → ) ( → ; ) ( ) (2016/7/20 ) — — 2017-10-13 – p.21/40
— — 2017-10-13 – p.22/40
: ⇒ ⇒ — — 2017-10-13 – p.23/40
Ether Ether Ether . . . BTC Everledger, Factom OAP
⇒ — — 2017-10-13 – p.24/40
3 1. ( : UTXO ) ⇒ ( ) 2.
( : ) ⇒ 3. ( : ) TX ⇒ 2 3 — — 2017-10-13 – p.25/40
— — 2017-10-13 – p.26/40
( ) (by ) (since 1984) ( ) ( )
( ) . . . ( ) — — 2017-10-13 – p.27/40
( ) ( ) ( ) ( ) ( )
( ) (by ) — — 2017-10-13 – p.28/40
Q. ( ) ( = / = ) ⇒ —
— 2017-10-13 – p.29/40
( ) ( ) ( ) — — 2017-10-13 –
p.30/40
( ) / / — — 2017-10-13 – p.31/40
— 1. ( ) 2. ( ) 3. ( )
— — 2017-10-13 – p.32/40
→ 30 : × — — 2017-10-13 – p.33/40
OS (2007) — — 2017-10-13 – p.34/40
Amazon Go → — — 2017-10-13 – p.35/40
( JPY ) MUFG J S (“Cause-Oriented Economy”) ⇒ —
— 2017-10-13 – p.36/40
(4 ) ( ) — — 2017-10-13 – p.37/40
( ) → (AI ) → ← → → /
/ — — 2017-10-13 – p.38/40
( ) 11/15 11/22 11/29 12/7( ) 2.0 12/13 12/20
— — 2017-10-13 – p.39/40
— — 2017-10-13 – p.40/40