Ethereum 入門 / Introduction to Ethereum

2023年8月23日(水)、ブロックチェーンハブ主催のブロックチェーンアカデミーにて使用したスライドです。

Transcript

1. 1 Ethereum CSO / ks91@blockchainhub.co.jp — 1 Ethereum — 2023-08-23 – p.1/33
2. https://speakerdeck.com/ks91 — 1 Ethereum — 2023-08-23 – p.2/33
3. ( ) SFC ( ) CSO (Chief Science Officer) 1993 ( ) 2006 ( ) SFC 22 P2P (Peer-to-Peer) 2011 ( ) 2018 2019 VR 2021.9 & VR 2022.3 2023 AI VR&RPG 2023.5 “Don’t Be So Serious” VOXEL 2023.7 DAZE 2023 → ( ) — 1 Ethereum — 2023-08-23 – p.3/33
4. 1 Ethereum BBc (Beyond Blockchain) — 1 Ethereum — 2023-08-23 – p.4/33
5. 1. Ethereum 2. Ethereum 3. Ethereum 4. — 1 Ethereum — 2023-08-23 – p.5/33
6. 1. Ethereum — 1 Ethereum — 2023-08-23 – p.6/33
7. Ethereum Vitalik Buterin, “Ethereum White Paper: A NEXT GENERATION SMART CONTRACT & DECENTRALIZED APPLICATION PLATFORM” 12 ( 12 ) (= ) = ⇒ → Dapps ( / / ) — 1 Ethereum — 2023-08-23 – p.7/33
8. 2. Ethereum macOS (Big Sur 11.6.4, Monterey 12.6.7) + Homebrew Linux (Ubuntu 22.04) (x86/AMD64 (and ARM)) Windows 10 + Windows Subsystem for Linux (Ubuntu ) Ethereum solidity brownie — 1 Ethereum — 2023-08-23 – p.8/33
9. Solidity Ethereum ( ) http://solidity.readthedocs.io/en/latest/installing-solidity.html Linux (on Windows) “sudo apt”, macOS “brew” Linux ARM git clone dependencies solc 0.8.21 (8/23 ) $ solc --version brownie py-solc-x solc (dependencies) ( solc py-solc-x ) — 1 Ethereum — 2023-08-23 – p.9/33
10. 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 — 1 Ethereum — 2023-08-23 – p.10/33
11. 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 $ sudo apt update $ sudo apt install python3.8 python3.8-dev python3.8-venv python3.8-tk 16.10 python3(.8) apt (PPA ) python3 ( python3.9 ) python3-dev python3-venv python3-tk — 1 Ethereum — 2023-08-23 – p.11/33
12. macOS : . . . macOS wget brew dyld: Library not loaded: /usr/local/opt/gettext/lib/libintl.8.dylib $ brew uninstall --force gettext $ brew install gettext — 1 Ethereum — 2023-08-23 – p.12/33
13. Python (venv) macOS (Linux python3 ) ‘python3.8’ ‘python3’ $ python3.8 -m venv bbc2env $ source bbc2env/bin/activate (bbc2env) $ pip install -U pip bbc2env ( BBc-2 ) ( ) (bbc2env) $ deactivate — 1 Ethereum — 2023-08-23 – p.13/33
14. Brownie Python Ethereum https://eth-brownie.readthedocs.io Brownie $ pip install eth-brownie version 1.19.3 (8/23 ) — 1 Ethereum — 2023-08-23 – p.14/33
15. $ brownie init ( ERC-20 ) $ brownie bake token $ cd token — 1 Ethereum — 2023-08-23 – p.15/33
16. 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 — 1 Ethereum — 2023-08-23 – p.16/33
17. Brownie $ brownie console Python >>> len(accounts) 10 >>> accounts[0].balance() 100000000000000000000 >>> quit() — 1 Ethereum — 2023-08-23 – p.17/33
18. 3. Ethereum — 1 Ethereum — 2023-08-23 – p.18/33
19. ( ) — 1 Ethereum — 2023-08-23 – p.19/33
20. . . . — 1 Ethereum — 2023-08-23 – p.20/33
21. vs. — 1 Ethereum — 2023-08-23 – p.21/33
22. = ( ) run ( ) — 1 Ethereum — 2023-08-23 – p.22/33
23. Ether Ethereum EOA : Externally-Owned Account ( ) Ether EVM EVM — 1 Ethereum — 2023-08-23 – p.23/33
24. 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 Gas ETH (Gas ) (burn ) ETH ( . . .) — 1 Ethereum — 2023-08-23 – p.24/33
25. EVM : : ← : Solidity — JavaScript LLL — Lisp Vyper — Python Fe — Vyper Rust ← NEW! Solidity Vyper Python — 1 Ethereum — 2023-08-23 – p.25/33
26. 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; } } — 1 Ethereum — 2023-08-23 – p.26/33
27. ( , ) (constructor) (deploy) = ( ) ( ) ETH Trusted Actor Model — 1 Ethereum — 2023-08-23 – p.27/33
28. Ethereum — 1 Ethereum — 2023-08-23 – p.28/33
29. 4. Ethereum Görli — 1 Ethereum — 2023-08-23 – p.29/33
30. 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 — 1 Ethereum — 2023-08-23 – p.30/33
31. G¨ orli ETH brownie console Görli >>> network.disconnect() >>> network.connect(’goerli’) >>> len(accounts) 0 >>> accounts.add() <LocalAccount object ’ 16 ’> >>> accounts[0].private_key 16 >>> quit() Görli Testnet ETH Faucet ETH https://goerlifaucet.com ( ) ( ) https://metamask.io/ — 1 Ethereum — 2023-08-23 – p.31/33
32. G¨ orli ETH brownie console Görli ETH >>> network.disconnect() >>> network.connect(’goerli’) >>> len(accounts) 0 >>> accounts.add( 16 ) <LocalAccount object ’ 16 ’> >>> accounts[0].balace() ETH >>> quit() ETH >>> accounts[0].transfer(accounts[1], "0.01 ether") — 1 Ethereum — 2023-08-23 – p.32/33
33. 2 Ethereum I : ERC-20 — 1 Ethereum — 2023-08-23 – p.33/33