ブロックチェーン技術の基礎と課題 / Basics and Problems of Blockchain Technology

Transcript

1. SFC / CSO ks91@sfc.wide.ad.jp — 2017-09-19 – p.1/13

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

   1993 M.Eng ( ) 2006 ( ) SFC 17 P2P 2011 → ( ) — 2017-09-19 – p.2/13

3. 1) ( ) → 2) 3) ⇒ ( ) ⇒

   — 2017-09-19 – p.3/13

4. ( ) P2P ( ) (double spending) ( ) ⇒

   ( ) ( ) ( ) — 2017-09-19 – p.4/13

5. – — 2017-09-19 – p.5/13

6. ( ) 1. 10 ( ) 2. 3. 1 —

   2017-09-19 – p.6/13

7. ∼ ( ) → — 2017-09-19 – p.7/13

8. ∼ ( ) — 2017-09-19 – p.8/13

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

   ( ) Ethereum ( ) ( ) Enterprise Ethereum Alliance (↓ ) (DLT) ( ) Hyperledger (Linux Foundation) Fabric (IBM/DAH), Sawtooth (Intel), Iroha ( ) Corda (R3) — 2017-09-19 – p.9/13

10. /DLT ( ) ( ) ( vs. ) ( )

    ( ) ( ) ⇒ DLT : — 2017-09-19 – p.10/13

11. : ( ) (by ) (since 1984) ( ) (

    ) ( ) . . . ( ) ⇒ — 2017-09-19 – p.11/13

12. : ( ) ( ) ( ) ( ) (

    ) (by ) — 2017-09-19 – p.12/13

13. ( ) — 2017-09-19 – p.13/13