イーサリアムとスマートコントラクト / Ethereum and Smart Contracts

2017年12月13日(水)、ブロックチェーンアカデミー「イーサリアムとスマートコントラクト」にて使用したスライドです

Transcript

1. CSO / SFC ks91@blockchainhub.co.jp — — 2017-09-14 – p.1/41
2. ( ) SFC ( ) CSO (Chief Science Officer) 1993 M.Eng ( ) 2006 ( ) SFC 17 P2P 2011 → ( ) — — 2017-09-14 – p.2/41
3. (EVM) — — 2017-09-14 – p.3/41
4. 1. 2. (Ethereum) 3. 4. 5. OS 6. — — 2017-09-14 – p.4/41
5. 1. — — 2017-09-14 – p.5/41
6. — — 2017-09-14 – p.6/41
7. . . . — — 2017-09-14 – p.7/41
8. vs. — — 2017-09-14 – p.8/41
9. 1. ⇒ ( ) ⇒ 2. ⇒ ⇒ 3. ⇒ — — 2017-09-14 – p.9/41
10. (by ) 1. 2. ( ) ( ) . . . cf. by McLuhan cf. by McLuhan — — 2017-09-14 – p.10/41
11. ⇒ : ⇒ — — 2017-09-14 – p.11/41
12. ⇒ : ⇒ — — 2017-09-14 – p.12/41
13. 2. (Ethereum) EVM (Ethereum Virtual Machine) — — 2017-09-14 – p.13/41
14. Vitalik Buterin, “Ethereum White Paper: A NEXT GENERATION SMART CONTRACT & DECENTRALIZED APPLICATION PLATFORM” 15 — — 2017-09-14 – p.14/41
15. = run — — 2017-09-14 – p.15/41
16. Ether Ethereum EOA : Externally-Owned Account Ether EVM EVM — — 2017-09-14 – p.16/41
17. EVM : Ethereum Virtual Machine Gas — — 2017-09-14 – p.17/41
18. Ethereum Frontier Homestead Metropolis Byzantium (2017) ← zkSNARKs ( ) → Zcash on Ethereum (ZoE) Constantinople (2018) Serenity — — 2017-09-14 – p.18/41
19. 3. — — 2017-09-14 – p.19/41
20. EVM : . . . : Solidity — JavaScript LLL — Lisp — — 2017-09-14 – p.20/41
21. Solidity ( ) pragma solidity ˆ0.4.8; contract IndivisibleAsset { /* */ string public _name; string public _symbol; uint256 public _quantity; address public _owner; function IndivisibleAsset(string name, string symbol, uint256 quantity) { _name = name; _symbol = symbol; _quantity = quantity; _owner = msg.sender; } function transfer(address to) { if (_owner != msg.sender) { throw; } _owner = to; } } — — 2017-09-14 – p.21/41
22. Solidity JavaScript ( , ) (constructor) ( ) ( ) Ether — — 2017-09-14 – p.22/41
23. — — 2017-09-14 – p.23/41
24. 4. ADEPT — — 2017-09-14 – p.24/41
25. ADEPT ADEPT : IBM IoT → — — 2017-09-14 – p.25/41
26. . . . — — 2017-09-14 – p.26/41
27. ⇒ — — 2017-09-14 – p.27/41
28. The DAO ( ) The DAO Split ( ) 360 ETH (50∼60 ) (2016/6/17) ( ) ( ; ) (2016/7/20 ) — — 2017-09-14 – p.28/41
29. 5. OS — — 2017-09-14 – p.29/41
30. OS (2007) — — 2017-09-14 – p.30/41
31. OS ↑ cf. NPO/NGO — — 2017-09-14 – p.31/41
32. OS — — 2017-09-14 – p.32/41
33. Uber — — 2017-09-14 – p.33/41
34. Uber Uber P2P + Uber — — 2017-09-14 – p.34/41
35. 6. / . . . — — 2017-09-14 – p.35/41
36. ( ) / / — — 2017-09-14 – p.36/41
37. — 1. ( ) 2. ( ) 3. ( ) — — 2017-09-14 – p.37/41
38. Communicating Promises in the Air CPA : Communicating Promises in the Air etc. → — — 2017-09-14 – p.38/41
39. 10 12 → 120 120 12 12 120 — — 2017-09-14 – p.39/41
40. — — 2017-09-14 – p.40/41
41. — — 2017-09-14 – p.41/41