ブロックチェーン概論とインストール大会 / Introduction to Blockchain and Installation Workshop

慶應義塾大学大学院メディアデザイン研究科「サービスデザインプロジェクトB」2025秋 第2回にて使用したスライドです。

Transcript

1. generated by Stable Image Ultra B 2025 2 ( ) B 2025 — 2 — 2025-10-13 – p.1/58
2. https://speakerdeck.com/ks91/collections/service-design-project-b-2025-fall ( ) ( ) Discord Discord ( / / ) Zoom URL ( ) B 2025 — 2 — 2025-10-13 – p.2/58
3. ( ) 1 10 6 • 2 10 13 • 3 10 20 4 10 27 2 5 11 10 1 6 11 24 2 7 12 1 8 12 8 ( ) Discord B 2025 — 2 — 2025-10-13 – p.3/58
4. 1. ( ) 2. Ethereum 3. B 2025 — 2 — 2025-10-13 – p.4/58
5. 4 ( ) ( ) ( ; ) ( ) B 2025 — 2 — 2025-10-13 – p.5/58
6. ( ) ೖྗ σδλϧͳΒԿͰ΋Α͍σʔλͷू߹ ແݶ ग़ྗ CJU ͳͲݻఆ௕ͷ਺ͷू߹ ༗ݶ ग़ྗ஋͸ʮμΠδΣετʯͱ΋ݺ͹ΕΔ খ ͞ ͍ ॱ ʹ ฒ Μ Ͱ ͍ Δ ͱ ͠ ͯ খ ͞ ͍ ॱ ʹ ฒ Μ Ͱ ͍ Δ ͱ ͠ ͯ 4)"
   ͳͲͷؔ਺ 4)"
   
   4FDVSF
   )BTI
   "MHPSJUIN Ұ༷ʹ෼෍ ϋογϡؔ਺ͷੑ࣭ ภͬͯ෼෍ Ϛοϐϯάʹ๏ଇੑ͕ແ͍Α͏ʹݟ͑ɺ ˠͷํ޲ʹ͸҆ՁʹܭࢉͰ͖Δ͕ɺ ٯͷํ޲ʹ͸ܭࢉͰ͖ͳ͍ Ұํ޲ੑ ҉߸ֶతϋογϡؔ਺ͷੑ࣭ ແݶΛ༗ݶʹϚοϐϯά͢ΔͷͰɺҟͳΔೖྗ͕ ಉ͡ग़ྗ݁ՌʹͳΔ৔߹΋͘͝رʹ͋Δ িಥ িಥ ͤ͞Δํ๏ ͕ݟ͔ͭͬͨ҉߸ֶతϋογϡ ؔ਺͸΋͸΍҆શͱ͸ݟͳ͞Εͳ͍ B 2025 — 2 — 2025-10-13 – p.6/58
7. ( ) ൿີ伴 伴ϖΞ ͋Β͔͡Ί ੜ੒ ൿີʹӅ࣋ͭ͠ ͋Β͔͡Ί౉͓͍ͯͯ͠΋Α͍ ॺ໊Λ࡞ͬͨͷ͸ެ։伴ʹ ରԠ͢Δൿີ伴Λ࢖͑Δ୭ ͔
   ͢ͳΘͪॺ໊ऀ
   ͩ͠ɺ ݩͷσʔλ͸ॺ໊ޙ͸CJU ΋มΘͬ ͍ͯͳ͍ ͜ͷ࢓૊Έ͕ਖ਼͘͠ಈ࡞͢ΔͨΊʹ͸ɺ ड͚औͬͨެ։伴͕ຊ౰ʹॺ໊ऀͷ΋ͷ Ͱ͋Δͱ͍͏ԿΒ͔ͷূ໌͕ඞཁ ʲॺ໊ΞϧΰϦζϜʳ ೖྗ
   
   ݩͷσʔλɺ ൿີ伴 ग़ྗ
   
   ॺ໊ ʲॺ໊ݕূΞϧΰϦζϜʳ ೖྗ
   
   ݩͷσʔλɺ ॺ໊ɺ ެ։伴 ग़ྗ
   
   0,
   ·ͨ͸
   /( ެ։伴 ॺ໊ऀ ॺ໊ ΞϧΰϦζϜ ॺ໊ݕূ ΞϧΰϦζϜ 0, ·ͨ͸ /( Πϯλʔωοτ ݕূऀ ެ ެ։ ։伴 伴 ެ։ ެ։伴 ެ ެ։ ։伴 伴 ݩͷ σʔλ ݩͷ σʔλ ॺ໊ ॺ໊ B 2025 — 2 — 2025-10-13 – p.7/58
8. ϒϩοΫ O ࣌ؒ ϒϩοΫϔομʔ ͍ΖΜͳ৘ใ͕ೖ͍ͬͯΔ ϒϩοΫ O ͷ μΠδΣετ औҾ σʔλ ެ։伴 ˍॺ໊ औҾ σʔλ ެ։伴 ˍॺ໊ औҾ σʔλ ެ։伴 ˍॺ໊ ʜʜ ϒϩοΫ O  ϒϩοΫϔομʔ ͍ΖΜͳ৘ใ͕ೖ͍ͬͯΔ ϒϩοΫ O ͷ μΠδΣετ औҾ σʔλ ެ։伴 ˍॺ໊ औҾ σʔλ ެ։伴 ˍॺ໊ औҾ σʔλ ެ։伴 ˍॺ໊ ʜʜ ϒϩοΫͷμΠδΣετ͸ ͦͷϒϩοΫΛҰҙʹࣔ͢ ࣝผࢠͱͯ͠΋༻͍ΒΕΔ औҾσʔλͷ࡟আ౳ͰϒϩοΫͷ ಺༰͕มΘΕ͹ɺͦͷμΠδΣετ ΋มΘΔͷͰɺໃ६͕ੜ͡Δ औҾσʔλʹ͸ૹ৴ऀͷσδλϧ ॺ໊͕෇͍͍ͯΔͷͰվ͟Μ͸ ࠔ೉͕ͩɺऔҾσʔλΛؙ͝ͱ ࡟আ͢Δ͜ͱ͸Ͱ͖Δ ࣍ͷϒϩοΫʹμΠδΣετ͕ ֨ೲ͞Ε͍ͯΔ͜ͱͰɺखલͷ ϒϩοΫͷ಺༰͸ϩοΫ͞Εͯ ͍Δͱ΋ݴ͑Δ͕ʜ ܨ͕͍ͬͯΔϒϩοΫͷϔομʔ ͷதͷμΠδΣετΛ࣍ʑͱॻ͖ ׵͍͚͑ͯ͹ໃ६ͳ͘վ͟ΜͰ͖ ΔͷͰɺϒϩοΫΛ࡞Δ͜ͱࣗମ ʹେ͖ͳίετΛඞཁʹͯ͠कΔ Proof of Work ( ) : ( ) Proof of Stake ( ) : B 2025 — 2 — 2025-10-13 – p.8/58
9. ( : ) ( : ) ← NFT 4 ⇒ B 2025 — 2 — 2025-10-13 – p.9/58
10. (Confidentiality) 4 ( 4 ) ↑ ( = ) (Integrity) (Availability) B 2025 — 2 — 2025-10-13 – p.10/58
11. 2009 ↑ 16 ( 5 ) B 2025 — 2 — 2025-10-13 – p.11/58
12. ( ) ADR (Active (space) Debris Removal) : https://doi.org/10.1109/TCSS.2018.2890655 1 (11/17 ) (1930 ) ( ) B 2025 — 2 — 2025-10-13 – p.12/58
13. ( ) ( ) ( ) B 2025 — 2 — 2025-10-13 – p.13/58
14. ( ) ( - ) : https://doi.org/10.1016/j.future.2019.05.019 B 2025 — 2 — 2025-10-13 – p.14/58
15. ( ) ( ) ( ) B 2025 — 2 — 2025-10-13 – p.15/58
16. ( ) B 2025 — 2 — 2025-10-13 – p.16/58
17. / ( ) ( ) ( ) ( ) B 2025 — 2 — 2025-10-13 – p.17/58
18. ( ) ( ) ( ) B 2025 — 2 — 2025-10-13 – p.18/58
19. ( ) : https://www.lij.jp/html/jli/jli_2017/ 2017summer_p018.pdf B 2025 — 2 — 2025-10-13 – p.19/58
20. ( ) ( ) B 2025 — 2 — 2025-10-13 – p.20/58
21. B 2025 — 2 — 2025-10-13 – p.21/58
22. with ( ) ( ) : https://doi.org/10.1016/j.icte.2021.08.012 ( ) B 2025 — 2 — 2025-10-13 – p.22/58
23. DNS : https://ieeexplore.ieee.org/document/9686409 ( ) IP AS B 2025 — 2 — 2025-10-13 – p.23/58
24. ( ) ( ) : https://ieeexplore.ieee.org/document/9686409 ( ) : https://doi.org/10.1016/j.icte.2021.08.012 (web ) B 2025 — 2 — 2025-10-13 – p.24/58
25. ( ) ( ) ( ) : https://doi.org/10.1016/j.icte.2021.08.012 ( ) ( ) ( ) : https://ieeexplore.ieee.org/document/9686409 1 (9/30 ) B 2025 — 2 — 2025-10-13 – p.25/58
26. ( ) ( ) : https://ieeexplore.ieee.org/document/9686409 3D ( ) : : (9/30 ) HACCP ( ) B 2025 — 2 — 2025-10-13 – p.26/58
27. — τʔΫϯ ୅ସ՟ฎ εϚʔτίϯτϥΫτ ݕূՄೳͳঢ়ଶϚγϯ ϓϩϏφϯε དྷྺূ໌
    ୅ସՄೳ ঈؐෆೳ ୅ସՄೳ ঈؐՄೳ ୅ସෆೳ ঈؐՄೳ ୅ସෆೳ ঈؐෆೳ ূ໌͢Δ ಉఆ͢Δ ࢧ෷͍౳ ࠷ॳͷԠ༻ *%
    Χʔυ౳ ηΩϡϦςΟ τʔΫϯ ূ݊ ౳ ηϯαʔ౳ ෺ྲྀɾ Ҩݴॻ౳ อݥਃ੥౳ ௥੻͢Δ ײ஌͢Δ தԝۜߦ σδλϧ௨՟౳ ҭ੒ήʔϜ౳ ൿີ伴Λ࢖͑Δ͔Βຊਓʁ ෛ࠴  Ξηοτͷ ਺஋දݱΛҠసͰ͖Δʁ ొ࿥͞Εͨίʔυͱ ͦͷ࣮ߦϩάͱ݁Ռͷ ਅਖ਼ੑΛ୲อͰ͖Δʁ ݖҖ͕
    Կ͔ͷ಺༰Λূ໌͢Δʁ ࣋ଓ͢Δଘࡏʹ͍ͭͯ ه࿥ΛΞοϓσʔτՄʁ ओମ͕͍ͳ͘ͳͬͯ΋ աڈͷσʔλ͸༗ޮʁ /'5 Ұൠతͳ ೝࣝ ػೳͷ ෼ੳ݁Ռ B 2025 — 2 — 2025-10-13 – p.27/58
28. 2. Ethereum macOS (Tahoe 26.0.1) + Homebrew Linux (Ubuntu 24.04) (x86/AMD64 and ARM) Windows 11 + Windows Subsystem for Linux (Ubuntu ) Ethereum solidity brownie Lima on macOS B 2025 — 2 — 2025-10-13 – p.28/58
29. macOS : Homebrew (Apple macOS ) UNIX macOS Lima Homebrew brew Apple brew ( ) brew Rosetta brew brew https://github.com/homebrew/install Path : https://zenn.dev/tet0h/articles/a92651d52bd82460aefb $ which brew /opt/homebrew/bin/brew B 2025 — 2 — 2025-10-13 – p.29/58
30. macOS : Rosetta 2 Apple x86/AMD64 ( ) $ softwareupdate --install-rosetta lima Rosetta 2 lima B 2025 — 2 — 2025-10-13 – p.30/58
31. macOS : Lima macOS Linux ( ) https://github.com/lima-vm/lima QEMU ( ) Rosetta 2 Apple x86/AMD64 brew (lima-additional-guestagents ) $ brew install lima Ubuntu 24.04 (x86/AMD64) “kmd.yaml” $ limactl start kmd.yaml B 2025 — 2 — 2025-10-13 – p.31/58
32. macOS : Lima Linux (Ubuntu) x86_64 $ limactl list Linux (exit ) $ limactl shell kmd Linux limactl list STATUS Stopped limactl start kmd “.lima” diffdisk 100GB B 2025 — 2 — 2025-10-13 – p.32/58
33. Solidity Ethereum ( ) http://solidity.readthedocs.io/en/latest/installing-solidity.html Linux (on Windows) “sudo apt”, macOS “brew” Linux ARM git clone dependencies solc 0.8.30 (10/4 ) $ solc --version brownie py-solc-x solc (dependencies) ( solc py-solc-x ) B 2025 — 2 — 2025-10-13 – p.33/58
34. Ganache Ethereum RPC npm ( ) macOS https://qiita.com/kyosuke5_20/items/c5f68fc9d89b84c0df09 Linux https://qiita.com/seibe/items/36cef7df85fe2cefa3ea npm Ganache $ sudo npm install -g ganache B 2025 — 2 — 2025-10-13 – p.34/58
35. Python3 macOS $ brew install python3 Python 3.8 Homebrew $ brew uninstall --ignore-dependencies python@3.9 $ brew install python@3.8 /usr/local/opt/python@3.8/bin/python3 Linux ( python3.12.3 OK) $ sudo apt update $ sudo apt install python3-dev python3-venv python3-tk 16.10 python3(.8) apt (PPA ) python3 python3-dev python3-venv python3-tk B 2025 — 2 — 2025-10-13 – p.35/58
36. macOS : . . . macOS wget brew dyld: Library not loaded: /usr/local/opt/gettext/lib/libintl.8.dylib $ brew uninstall --force gettext $ brew install gettext B 2025 — 2 — 2025-10-13 – p.36/58
37. Python (venv) macOS (Linux python3 ) OK Python $ python3 -m venv bbc2env $ source bbc2env/bin/activate (bbc2env) $ pip install -U pip bbc2env ( BBc-2 ) ( ) (bbc2env) $ deactivate B 2025 — 2 — 2025-10-13 – p.37/58
38. Brownie Python Ethereum https://eth-brownie.readthedocs.io Brownie $ pip install eth-brownie version 1.21.0 (10/4 ) $ pip install setuptools setuptools B 2025 — 2 — 2025-10-13 – p.38/58
39. $ brownie init ( ERC-20 ) $ brownie bake token $ cd token B 2025 — 2 — 2025-10-13 – p.39/58
40. contracts (macOS Linux (x86/AMD64) ) $ brownie compile Linux (ARM) (AMD64 ) $ python # >>> import solcx >>> solcx.compile_solc(’0.6.12’) # >>> quit() /tmp ∼/.solcx/solc-v0.6.12 ( ) $ pytest tests B 2025 — 2 — 2025-10-13 – p.40/58
41. Brownie $ brownie console Python >>> len(accounts) 10 >>> accounts[0].balance() 100000000000000000000 >>> quit() B 2025 — 2 — 2025-10-13 – p.41/58
42. 3. Ethereum Sepolia B 2025 — 2 — 2025-10-13 – p.42/58
43. infura.io Brownie https://infura.io SIGN UP PROJECT ID infura Ethereum API infura . . . infura.io PROJECT ID WEB3_INFURA_PROJECT_ID PROJECT ID (∼/.bash_profile ) $ export WEB3_INFURA_PROJECT_ID= PROJECT ID B 2025 — 2 — 2025-10-13 – p.43/58
44. Sepolia ETH brownie console Sepolia >>> network.disconnect() >>> network.connect(’sepolia’) >>> len(accounts) 0 >>> accounts.add() <LocalAccount object ’ 16 ’> >>> accounts[0].private_key 16 >>> quit() Sepolia Testnet ETH Faucet ETH https://sepoliafaucet.com ( ) ( ) https://metamask.io/ B 2025 — 2 — 2025-10-13 – p.44/58
45. Sepolia ETH brownie console Sepolia ETH >>> network.disconnect() >>> network.connect(’sepolia’) >>> len(accounts) 0 >>> accounts.add( 16 ) <LocalAccount object ’ 16 ’> >>> accounts[0].balace() ETH >>> quit() ETH >>> accounts[0].transfer(accounts[1], "0.01 ether") B 2025 — 2 — 2025-10-13 – p.45/58
46. : Ethereum B 2025 — 2 — 2025-10-13 – p.46/58
47. Ethereum Vitalik Buterin, “Ethereum White Paper: A NEXT GENERATION SMART CONTRACT & DECENTRALIZED APPLICATION PLATFORM” 12 (= ) = ⇒ → Dapps ( / / ) B 2025 — 2 — 2025-10-13 – p.47/58
48. ( ) B 2025 — 2 — 2025-10-13 – p.48/58
49. . . . B 2025 — 2 — 2025-10-13 – p.49/58
50. vs. B 2025 — 2 — 2025-10-13 – p.50/58
51. = run B 2025 — 2 — 2025-10-13 – p.51/58
52. Ether Ethereum EOA : Externally-Owned Account ( ) Ether EVM EVM B 2025 — 2 — 2025-10-13 – p.52/58
53. EVM : Ethereum Virtual Machine ঢ়ଶ ֎෦ΞΫλʔ ΞΧ΢ϯτ &7. ίʔυ &UIFS
    ˠ
    (BT ىಈ ίϯτϥΫτ ϝοηʔδ
    ͔ɺ৽͍ࣗ͠ಈΦϒδΣΫτ ΞΧ΢ϯτؒͰ΍ΓऔΓ͞ΕΔσʔλ΍
    &UIFS ετϨʔδ ঢ়ଶ` τϥϯβΫγϣϯ ηοτ σδλϧॺ໊ &7. ਓؒͱ͔ ࣗಈ ΦϒδΣΫτ Gas ( EVM = ( burn)) . . . B 2025 — 2 — 2025-10-13 – p.53/58
54. EVM : : ← : Solidity — JavaScript LLL — Lisp Vyper — Python Fe — Vyper Rust ← NEW! Solidity Vyper Python B 2025 — 2 — 2025-10-13 – p.54/58
55. Solidity ( ) pragma solidityˆ0.7.0; contract IndivisibleAsset { /* */ string public _name; string public _symbol; uint256 public _quantity; address public _owner; constructor(string memory name, string memory symbol, uint256 quantity) public { _name = name; _symbol = symbol; _quantity = quantity; _owner = msg.sender; } function transfer(address to) public returns (bool) { require (_owner == msg.sender); _owner = to; return true; } } B 2025 — 2 — 2025-10-13 – p.55/58
56. ( , ) (constructor) (deploy) = ( ) ( ) ETH Trusted Actor Model B 2025 — 2 — 2025-10-13 – p.56/58
57. Ethereum B 2025 — 2 — 2025-10-13 – p.57/58
58. B 2025 — 2 — 2025-10-13 – p.58/58