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ブロックチェーンの「できること」「できないこと」 〜 基礎・技術的課題とインパクト / Wha...

Avatar for Kenji Saito Kenji Saito PRO
May 31, 2017
Technology
1.5k
4

ブロックチェーンの「できること」「できないこと」 〜 基礎・技術的課題とインパクト / What blockchains can and cannot - Basics, Technological Problems and Impacts

2017年5月31日(水)、神田にて開催された日経Automotiveセミナー「始まるクルマのブロックチェーン」にて講演した際に使用したスライドです。

Avatar for Kenji Saito

Kenji Saito PRO

May 31, 2017

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Transcript

  1. ∼ ∼ SFC / CSO [email protected] — — 2017-05-31 –

    p.1/30

  2. ( ) SFC ( ) CSO (Chief Science Officer) 1993

    M.Eng ( ) 2006 ( ) SFC 16 P2P 2011 → ( ) — — 2017-05-31 – p.2/30

  3. — — 2017-05-31 – p.3/30

  4. (by Satoshi Nakamoto) Satoshi ( ) (block; , ) (chain;

    ) — — 2017-05-31 – p.4/30

  5. ( ) P2P ( ) (double spending) ⇒ ( )

    ( ) ( ) — — 2017-05-31 – p.5/30

  6. /DLT ( ) Bitcoin ( ) Open Assets Protocol (OAP)

    ( ) Ethereum ( ) Enterprise Ethereum (↓ ) ( ) Hyperledger (Linux Foundation) Fabric (IBM/DAH), Sawtooth Lake (Intel), Iroha ( ) Corda (R3) — — 2017-05-31 – p.6/30

  7. – — — 2017-05-31 – p.7/30

  8. – RSA, DSA, ECDSA ( DSA) ( RSA ← )

    PKI — — 2017-05-31 – p.8/30

  9. ( ) 1. 10 ( ) 2. 3. 1 —

    — 2017-05-31 – p.9/30

  10. End-to-End ( ) ( ) — — 2017-05-31 – p.10/30

  11. (Hyperledger ) ( ) ( ) ( ) IoT /

    / ( ) — — 2017-05-31 – p.11/30

  12. — — 2017-05-31 – p.12/30

  13. : . . . : Proof of Existence, Everledger, Factom,

    . . . ( ) ( ) — — 2017-05-31 – p.13/30

  14. ( KVS DHT) — — 2017-05-31 – p.14/30

  15. — — 2017-05-31 – p.15/30

  16. (2014.2-2016.1) — — 2017-05-31 – p.16/30

  17. vs. — — 2017-05-31 – p.17/30

  18. — — 2017-05-31 – p.18/30

  19. : ⇒ ⇒ — — 2017-05-31 – p.19/30

  20. ( ) Ether Ether Ether . . . BTC Everledger,

    Factom Open Assets Protocol ⇒ — — 2017-05-31 – p.20/30

  21. 3 1. ( : UTXO ) ⇒ ( ) 2.

    ( : ) ⇒ 3. ( : ) TX ⇒ 2 3 — — 2017-05-31 – p.21/30

  22. — — 2017-05-31 – p.22/30

  23. Q. ( ) ( = / = ) ⇒ (

    ) — — 2017-05-31 – p.23/30

  24. ( ) ( ) ( ) — — 2017-05-31 –

    p.24/30

  25. ( ) (by ) (since 1984) ( ) ( )

    . . . — — 2017-05-31 – p.25/30

  26. ( ) ( ) ( ) ( ) (by )

    — — 2017-05-31 – p.26/30

  27. ( ) / / — — 2017-05-31 – p.27/30

  28. — 1. ( ) 2. ( ) 3. ( )

    — — 2017-05-31 – p.28/30

  29. OS (2007) — — 2017-05-31 – p.29/30

  30. — — 2017-05-31 – p.30/30