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ブロックチェーン概論 / Overview of Blockchain

Kenji Saito
September 05, 2018

ブロックチェーン概論 / Overview of Blockchain

2018年9月5日(水)、ブロックチェーンハブ主催で開催され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

September 05, 2018
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  1. ( ) SFC ( ) CSO (Chief Science Officer) 1993

    ( ) 2006 ( ) SFC 18 P2P (Peer-to-Peer) 2011 → ( ) — — 2018-09-05 – p.2/42
  2. (2017) : SF + + SF (2048 ) 2048 —

    — 2018-09-05 – p.3/42
  3. (by Satoshi Nakamoto) Satoshi ( ) (block; , ) (CS

    ) (chain; ) (CS ) — — 2018-09-05 – p.5/42
  4. ( ) P2P ( ) (double spending) ⇒ ( )

    ← — — 2018-09-05 – p.6/42
  5. ( ) (( ) ) ⇓ ⇓ “Code is Law”

    — — 2018-09-05 – p.7/42
  6. 1) 2) 3) ⇒ ⇒ · / (dependable ) —

    — 2018-09-05 – p.8/42
  7. /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), BBc-1 ( ) — — 2018-09-05 – p.9/42
  8. Beyond Blockchain One (BBc-1) ( ) #JUDPJO ##D$PSF ϨοδϟʔαϒγεςϜ ΞϓϦέʔγϣϯ

    ͦ ͷ ଞ ͞ · ͟ · ͳ Ξ ϓ Ϧ ͷ Մ ೳ ੑ ڞ௨ϥΠϒϥϦ ##D ։ൃ߲໨ ஍ Ҭ ௨ ՟ Ξ ϓ Ϧ ϙ Π ϯ τ Ξ ϓ Ϧ དྷ ྺ ূ ໌ Ξ ϓ Ϧ ʜ ॳظʹ͓͍ͯଘࡏূ໌Λґଘ ΞϯΧϦϯά ֤ϊʔυʹ͓͚Δه࿥ʹ͸ ֤छσʔλϕʔεΛར༻Մೳ TRMJUF.Z42-ͦͷଞ%# BBc-1 σδλϧ௨՟ϥΠϒϥϦ ͦͷଞͷϥΠϒϥϦ Bitcoin Ethereum ( ) ( ) — — 2018-09-05 – p.10/42
  9. (2) — RSA, DSA, ECDSA ( DSA; ), etc. RSA

    ← ( ) — — 2018-09-05 – p.12/42
  10. ( ) 1. 10 ( ) 2. 3. 1 —

    — 2018-09-05 – p.13/42
  11. ਖ਼౰ੑͷอূ ྫ6590ߏ଄ͱσδλϧॺ໊ ଘࡏੑͷূ໌ ྫ࡞ۀূ໌෇͖ϋογϡνΣʔϯ །Ұੑͷ߹ҙ ྫφΧϞτɾίϯηϯαε ϧʔϧͷهड़ ྫ#5$ͷҠస ɾ τϥϯβΫγϣϯͷ಺༰͕վ͟ΜͰ͖ͣɺ

    ɾ ͦͷΞηοτʹؔ͢ΔաڈͷτϥϯβΫγϣϯྻʹরΒͯ͠ໃ६͕ͳ͘ɺ ɾ ͔ͭɺਖ਼౰ͳϢʔβʹΑΓ౤ೖ͞Ε͍ͯΔ͜ͱΛอূ͢Δ ɾաڈʹ͋ͬͨτϥϯβΫγϣϯͷূڌΛຣফͰ͖ͣɺ ɾ ͔ͭɺաڈʹͳ͔ͬͨτϥϯβΫγϣϯͷূڌΛ፻଄Ͱ͖ͳ͍ ɾໃ६͢Δ;ͨͭͷτϥϯβΫγϣϯ͕౤ೖ͞Εͨ৔߹ɺ ɹ ͍ͣΕ ؔ༩͢Δશһ͕ಉ͡ยํΛબΜͰྺ࢙ͷதʹҐஔ͚ͮΔ ɾΞϓϦέʔγϣϯϩδοΫ Կ͕ਖ਼͍͠τϥϯβΫγϣϯ͔ΛܾΊΔ — — 2018-09-05 – p.14/42
  12. ( / ) EVM ( ) EVM (Ethereum Virtual Machine)

    Gas ( CPU ) — — 2018-09-05 – p.15/42
  13. (Hyperledger ) ( ) ( ) ( ) IoT /

    / ( , ) — — 2018-09-05 – p.17/42
  14. : . . . : Proof of Existence, Everledger, Factom,

    . . . (OP_RETURN ) ( ) ( ) / × = — — 2018-09-05 – p.18/42
  15. (2009 1 ∼2018 8 ) 2 → 2 2 →

    — — 2018-09-05 – p.21/42
  16. The DAO ( ) The DAO Split ( ) 360

    ETH (50∼60 ) (2016/6/17) ( → ) ( → ; ) ( ) (2016/7/20 ) — — 2018-09-05 – p.23/42
  17. Ether Ether Ether . . . BTC Everledger, Factom OAP

    ⇒ — — 2018-09-05 – p.26/42
  18. ( ) ( ) ( vs. ) ( ) (

    ) ( ) ⇒ ( : BBc-1) DLT : : — — 2018-09-05 – p.27/42
  19. /DLT Bitcoin, Ethereum DLT BBc-1 ( ) ( ) (

    ) ( ) ( ) ( ) ( ) ( ) ( ) Ethereum ( ) ( ) — — 2018-09-05 – p.28/42
  20. C V C ≥ V Bitcoin ( ) bitcoin Bitcoin

    ( ) Ethereum DLT ( ) BBc-1 ( ) ( ) C ≥ V (proactive) (introspection ( ) ) ( ) — — 2018-09-05 – p.29/42
  21. ( ) (by ) (since 1984) ( ) ( )

    ( ) . . . ( ) — — 2018-09-05 – p.31/42
  22. ( ) ( ) ( ) ( ) ( )

    ( ) (by ) — — 2018-09-05 – p.32/42
  23. Q. ( ) ( = / = ) ⇒ —

    — 2018-09-05 – p.33/42
  24. — 1. ( ) 2. ( ) 3. ( )

    — — 2018-09-05 – p.36/42
  25. ( ) → (AI ) → ← → → /

    / — — 2018-09-05 – p.41/42