BBc-1 と Ethereum 入門 / Introduction to BBc-1 and Ethereum

2022年9月7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 BBc-1 Ethereum
   CSO /
   ks91@blockchainhub.co.jp
   — 1 BBc-1 Ethereum — 2022-09-07 – p.1/36
   

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2. https://speakerdeck.com/ks91
   — 1 BBc-1 Ethereum — 2022-09-07 – p.2/36
   

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3. ( )
   SFC ( )
   CSO (Chief Science Officer)
   1993 ( )
   2006 ( )
   SFC
   21 P2P (Peer-to-Peer)
   2011 ( )
   2018 2019
   VR 2021.7 VR 2021.8 “ALL THESE WORLDS ARE YOURS”
   VR 2021.9 & VR 2021.12
   VR 2022.3 VR 2022.8
   → ( )
   — 1 BBc-1 Ethereum — 2022-09-07 – p.3/36
   

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4. BBc-1 (Beyond Blockchain One)
   Ethereum
   — 1 BBc-1 Ethereum — 2022-09-07 – p.4/36
   

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5. 1. Ethereum
   2. Ethereum
   3. Ethereum
   4.
   5. BBc-1
   — 1 BBc-1 Ethereum — 2022-09-07 – p.5/36
   

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6. 1. Ethereum
   — 1 BBc-1 Ethereum — 2022-09-07 – p.6/36
   

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7. ( )
   (BP : Blockchain Property )
   BP-1 : ( )
   BP-2 : ( )( )
   BP-3 : ( )
   ( )
   ( )
   — 1 BBc-1 Ethereum — 2022-09-07 – p.7/36
   

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8. 1) ( )
   2) (= )
   3)
   ⇒
   (= )
   ⇒
   · / 1:1 NFT
   / (dependable )
   — 1 BBc-1 Ethereum — 2022-09-07 – p.8/36
   

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9. /DLT
   ( )
   Bitcoin ( )
   Open Assets Protocol (OAP)
   ( )
   Ethereum (2.0) (Dapps ( ) ) ( )
   Polkadot (Web3 Foundation) ( )
   (DLT) ( )
   Hyperledger (Linux Foundation)
   Fabric (IBM/DAH), Sawtooth (Intel), Iroha ( ), Indy, Besu
   Corda (R3),
   . . .
   , BBc-1 ( )
   — 1 BBc-1 Ethereum — 2022-09-07 – p.9/36
   

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10. Ethereum
    Vitalik Buterin, “Ethereum White Paper: A NEXT GENERATION SMART
    CONTRACT & DECENTRALIZED APPLICATION PLATFORM”
    15
    Dapps ( / / )
    — 1 BBc-1 Ethereum — 2022-09-07 – p.10/36
    

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11. 2. Ethereum
    macOS (Big Sur 11.6.4) ( Monterey 12.5.1 ) + Homebrew
    Linux (Ubuntu 22.04) (x86/AMD64 and ARM)
    Windows 10 + Windows Subsystem for Linux (Ubuntu )
    Ethereum solidity brownie
    — 1 BBc-1 Ethereum — 2022-09-07 – p.11/36
    

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12. Solidity
    Ethereum ( )
    http://solidity.readthedocs.io/en/latest/installing-solidity.html
    Linux (on Windows) “sudo apt”, macOS “brew”
    Linux ARM
    git clone dependencies
    solc 0.8.16 (9/6 )
    $ solc --version
    brownie py-solc-x
    solc (dependencies) ( solc py-solc-x )
    — 1 BBc-1 Ethereum — 2022-09-07 – p.12/36
    

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13. Ganache CLI
    Ethereum RPC
    npm ( )
    macOS
    https://qiita.com/kyosuke5_20/items/c5f68fc9d89b84c0df09
    Linux
    https://qiita.com/seibe/items/36cef7df85fe2cefa3ea
    npm Ganache CLI
    $ sudo npm install -g ganache-cli
    — 1 BBc-1 Ethereum — 2022-09-07 – p.13/36
    

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14. Python3
    macOS
    $ brew install python@3.8
    python3 python 3.9 (12/2 )
    3.9 3.8
    3.9
    $ 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-dev python3-venv python3-tk
    — 1 BBc-1 Ethereum — 2022-09-07 – p.14/36
    

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15. macOS :
    . . .
    macOS wget brew
    dyld: Library not loaded: /usr/local/opt/gettext/lib/libintl.8.dylib
    $ brew uninstall --force gettext
    $ brew install gettext
    — 1 BBc-1 Ethereum — 2022-09-07 – p.15/36
    

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16. Python (venv)
    macOS (Linux python3 ) ‘python3.8’ ‘python3’
    $ python3.8 -m venv bbc1env
    $ source bbc1env/bin/activate
    (bbc1env) $ pip install -U pip
    (bbc1env) $ pip install wheel
    bbc1env ( BBc-1 )
    ( )
    (bbc1env) $ deactivate
    — 1 BBc-1 Ethereum — 2022-09-07 – p.16/36
    

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17. Brownie
    Python Ethereum
    https://eth-brownie.readthedocs.io
    Brownie
    $ pip install eth-brownie
    version 1.19.1 (9/6 )
    — 1 BBc-1 Ethereum — 2022-09-07 – p.17/36
    

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18. $ brownie init
    ( ERC-20 )
    $ brownie bake token
    $ cd token
    — 1 BBc-1 Ethereum — 2022-09-07 – p.18/36
    

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19. 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 BBc-1 Ethereum — 2022-09-07 – p.19/36
    

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20. Brownie
    $ brownie console
    Python
    >>> len(accounts)
    10
    >>> accounts[0].balance()
    100000000000000000000
    >>> quit()
    — 1 BBc-1 Ethereum — 2022-09-07 – p.20/36
    

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21. 3. Ethereum
    — 1 BBc-1 Ethereum — 2022-09-07 – p.21/36
    

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22. — 1 BBc-1 Ethereum — 2022-09-07 – p.22/36
    

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23. . . .
    — 1 BBc-1 Ethereum — 2022-09-07 – p.23/36
    

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24. vs.
    — 1 BBc-1 Ethereum — 2022-09-07 – p.24/36
    

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25. = run
    — 1 BBc-1 Ethereum — 2022-09-07 – p.25/36
    

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26. Ether
    Ethereum
    EOA : Externally-Owned Account
    ( )
    Ether EVM
    EVM
    — 1 BBc-1 Ethereum — 2022-09-07 – p.26/36
    

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27. EVM : Ethereum Virtual Machine
    (validator)
    ⇒ Gas — 1 BBc-1 Ethereum — 2022-09-07 – p.27/36
    

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28. EVM
    :
    : ←
    :
    Solidity — JavaScript
    LLL — Lisp
    Vyper — Python
    Fe — Vyper Rust ← NEW!
    Solidity
    Vyper Python
    — 1 BBc-1 Ethereum — 2022-09-07 – p.28/36
    

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29. Solidity ( )
    pragma solidityˆ0.5.0;
    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 BBc-1 Ethereum — 2022-09-07 – p.29/36
    

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30. Ethereum
    — 1 BBc-1 Ethereum — 2022-09-07 – p.30/36
    

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31. 4.
    Ethereum ropsten
    — 1 BBc-1 Ethereum — 2022-09-07 – p.31/36
    

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32. 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 BBc-1 Ethereum — 2022-09-07 – p.32/36
    

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33. ropsten ETH
    brownie console ropsten
    >>> network.disconnect()
    >>> network.connect(’ropsten’)
    >>> len(accounts)
    0
    >>> accounts.add()
    
    >>> accounts[0].private_key
    16
    >>> quit()
    Ropsten Testnet ETH Faucet 10.0ETH
    https://faucet.egorfine.com
    ( )
    https://metamask.io/
    — 1 BBc-1 Ethereum — 2022-09-07 – p.33/36
    

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34. ropsten ETH
    brownie console ropsten ETH
    >>> network.disconnect()
    >>> network.connect(’ropsten’)
    >>> len(accounts)
    0
    >>> accounts.add( 16 )
    
    >>> accounts[0].balace()
    ETH
    >>> quit()
    ETH
    >>> accounts[0].transfer(accounts[1], "1 ether")
    — 1 BBc-1 Ethereum — 2022-09-07 – p.34/36
    

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35. 5. BBc-1
    https://speakerdeck.com/beyondblockchain/bbc-1-hands-on-installation-and-file-content-proof
    — 1 BBc-1 Ethereum — 2022-09-07 – p.35/36
    

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36. 2 BBc-1 Ethereum I
    :
    — 1 BBc-1 Ethereum — 2022-09-07 – p.36/36
    

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