スマートコントラクトプログラミング (1) ブロックチェーン概論 / Overview of Blockchains

ブロックチェーンハブ主催で開催している (第2期) スマートコントラクトプログラミング講義 (1) 「ブロックチェーン概論」のスライドです。2017年5月10日(水) に使用しました。

Transcript

1. (1) CSO / SFC ks91@sfc.wide.ad.jp – (1) – 2017-02-06 – p.1/33
2. 1. 2. 3. 4. 5. https://www.blockchainhub.co.jp/lectures/ – (1) – 2017-02-06 – p.2/33
3. 1. – (1) – 2017-02-06 – p.3/33
4. ( ) ( ) ← ← (TX) (TX) ← ( : ) ( ) “A timestamp server works by taking a hash of a block of items to be timestamped and widely publishing the hash, such as in a newspaper or Usenet post” “To implement a distributed timestamp server on a peer-to-peer basis, we will need to use a proof-of-work system similar to Adam Back’s Hashcash, rather than newspaper or Usenet posts” – Satoshi Nakamoto (2008) – (1) – 2017-02-06 – p.4/33
5. ( ) P2P ( ) (double spending) ⇒ ( ) ← – (1) – 2017-02-06 – p.5/33
6. / (1) 2,100 cm3 1 1cm3 10 12.5cm3 ⇒ ⇒ ( ) – (1) – 2017-02-06 – p.6/33
7. / (2) ( ) ( ) ( ) ( ) → – (1) – 2017-02-06 – p.7/33
8. End-to-End ( ) ( ) – (1) – 2017-02-06 – p.8/33
9. 2. – (1) – 2017-02-06 – p.9/33
10. 10 BcH BcH : Blockchain Hours 1) 2) – (1) – 2017-02-06 – p.10/33
11. ⇒ – (1) – 2017-02-06 – p.11/33
12. 3. – (1) – 2017-02-06 – p.12/33
13. – – (1) – 2017-02-06 – p.13/33
14. – RSA, DSA, ECDSA ( DSA) ( RSA ← ) PKI – (1) – 2017-02-06 – p.14/33
15. 4. – (1) – 2017-02-06 – p.15/33
16. – (1) – 2017-02-06 – p.16/33
17. (1) (= ) → UTXO (Unspent TX Output) UTXO – (1) – 2017-02-06 – p.17/33
18. (2) M A 60BTC (SegWit . . . ) – (1) – 2017-02-06 – p.18/33
19. – (1) – 2017-02-06 – p.19/33
20. 1. 10 ( ) 2. 3. 1 – (1) – 2017-02-06 – p.20/33
21. – (1) – 2017-02-06 – p.21/33
22. 21 ( 4 ) ( ) 2,100 BTC 1 1 BTC 2140 20,999,999.9769 BTC – (1) – 2017-02-06 – p.22/33
23. – (1) – 2017-02-06 – p.23/33
24. CPU → GPU → FPGA → ASIC ( ) → → – (1) – 2017-02-06 – p.24/33
25. – (1) – 2017-02-06 – p.25/33
26. POW ( ) Proof Of Work . . . – (1) – 2017-02-06 – p.26/33
27. (2014.2-2016.1) – (1) – 2017-02-06 – p.27/33
28. 3 1. ( : UTXO ) ⇒ ( ) 2. ( : ) ⇒ 3. ( : ) TX ⇒ 2 3 – (1) – 2017-02-06 – p.28/33
29. 5. https://blockchain.info/ – (1) – 2017-02-06 – p.29/33
30. 1. 2. – (1) – 2017-02-06 – p.30/33
31. Proof of Existence ( ) https://proofofexistence.com – (1) – 2017-02-06 – p.31/33
32. Proof of Existence ( ) ( ) OP_RETURN OP_RETURN = ⇒ (burn = ( ) ) 0x444f4350524f4f46 (‘DOCPROOF’) SHA-256 5 mBTC (0.005 BTC) – (1) – 2017-02-06 – p.32/33
33. (Ethereum) Mac OS X (Yosemite 10.10.5) + Homebrew Linux (Ubuntu 16.04) Windows 10 (Creators Update) + Bash on Ubuntu on Windows http://populus.readthedocs.io/en/latest/quickstart.html – (1) – 2017-02-06 – p.33/33