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

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

2022年4月6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。

Kenji Saito

April 06, 2022
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  1. 1 BBc-1 Ethereum
    CSO /
    [email protected]
    — 1 BBc-1 Ethereum — 2022-04-06 – p.1/36

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  2. https://speakerdeck.com/ks91
    — 1 BBc-1 Ethereum — 2022-04-06 – 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) )
    → ( )
    — 1 BBc-1 Ethereum — 2022-04-06 – p.3/36

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  4. BBc-1 (Beyond Blockchain One)
    Ethereum
    — 1 BBc-1 Ethereum — 2022-04-06 – p.4/36

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  5. 1. Ethereum
    2. Ethereum
    3. Ethereum
    4.
    5. BBc-1
    — 1 BBc-1 Ethereum — 2022-04-06 – p.5/36

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  6. 1. Ethereum
    — 1 BBc-1 Ethereum — 2022-04-06 – p.6/36

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  7. ( )
    (BP : Blockchain Property )
    BP-1 : ( )
    BP-2 : ( )( )
    BP-3 : ( )
    ( )
    ( )
    — 1 BBc-1 Ethereum — 2022-04-06 – p.7/36

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  8. 1) ( )
    2) (= )
    3)

    (= )

    · / 1:1 NFT
    / (dependable )
    — 1 BBc-1 Ethereum — 2022-04-06 – p.8/36

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  9. /DLT
    ( )
    Bitcoin ( )
    Open Assets Protocol (OAP)
    ( )
    Ethereum (2.0) (Dapps ( ) ) ( )
    (DLT) ( )
    Hyperledger (Linux Foundation)
    Fabric (IBM/DAH), Sawtooth (Intel), Iroha ( ), Indy, Besu
    Polkadot (Web3 Foundation) ( ; Ethereum 2.0 )
    Corda (R3),
    . . .
    , BBc-1 ( )
    — 1 BBc-1 Ethereum — 2022-04-06 – 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 — 2022-04-06 – p.10/36

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  11. 2. Ethereum
    macOS (Big Sur 11.6.4) + Homebrew
    Linux (Ubuntu 20.04.4) (x86/AMD64 and ARM)
    Windows 10 + Windows Subsystem for Linux (Ubuntu )
    Ethereum solidity brownie
    — 1 BBc-1 Ethereum — 2022-04-06 – 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 0.8.13 (4/6 )
    $ solc --version
    brownie py-solc-x
    solc (dependencies) ( solc py-solc-x )
    — 1 BBc-1 Ethereum — 2022-04-06 – 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 — 2022-04-06 – p.13/36

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  14. Python3
    macOS
    $ brew install [email protected]
    python3 python 3.9 (12/2 )
    3.9 3.8
    3.9
    $ brew uninstall --ignore-dependencies [email protected]
    $ brew install [email protected]
    /usr/local/opt/[email protected]/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 — 2022-04-06 – 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 — 2022-04-06 – 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 — 2022-04-06 – p.16/36

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  17. Brownie
    Python Ethereum
    https://eth-brownie.readthedocs.io
    Brownie
    $ pip install eth-brownie
    version 1.18.1 (4/6 )
    — 1 BBc-1 Ethereum — 2022-04-06 – p.17/36

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  18. $ brownie init
    ( ERC-20 )
    $ brownie bake token
    $ cd token
    — 1 BBc-1 Ethereum — 2022-04-06 – 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 — 2022-04-06 – p.19/36

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  20. Brownie
    $ brownie console
    Python
    >>> len(accounts)
    10
    >>> accounts[0].balance()
    100000000000000000000
    >>> quit()
    — 1 BBc-1 Ethereum — 2022-04-06 – p.20/36

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  21. 3. Ethereum
    — 1 BBc-1 Ethereum — 2022-04-06 – p.21/36

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  22. — 1 BBc-1 Ethereum — 2022-04-06 – p.22/36

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  23. . . .
    — 1 BBc-1 Ethereum — 2022-04-06 – p.23/36

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  24. vs.
    — 1 BBc-1 Ethereum — 2022-04-06 – p.24/36

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  25. = run
    — 1 BBc-1 Ethereum — 2022-04-06 – p.25/36

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  26. Ether
    Ethereum
    EOA : Externally-Owned Account
    ( )
    Ether EVM
    EVM
    — 1 BBc-1 Ethereum — 2022-04-06 – p.26/36

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  27. EVM : Ethereum Virtual Machine
    (validator)
    ⇒ Gas — 1 BBc-1 Ethereum — 2022-04-06 – 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 — 2022-04-06 – 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 — 2022-04-06 – p.29/36

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  30. Ethereum
    — 1 BBc-1 Ethereum — 2022-04-06 – p.30/36

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  31. 4.
    Ethereum ropsten
    — 1 BBc-1 Ethereum — 2022-04-06 – 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 — 2022-04-06 – 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 5.0ETH
    https://faucet.dimensions.network/
    ( )
    https://metamask.io/
    — 1 BBc-1 Ethereum — 2022-04-06 – 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 — 2022-04-06 – 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 — 2022-04-06 – p.35/36

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  36. 2 BBc-1 Ethereum I
    :
    — 1 BBc-1 Ethereum — 2022-04-06 – p.36/36

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