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BBc-1 ハンズオン : Ethereum によるレッジャーサブシステム / BBc-1 H...

BBc-1 ハンズオン : Ethereum によるレッジャーサブシステム / BBc-1 Hands-on : Ledger Subsystem with Ethereum

BBc-1 Core に既存ブロックチェーン等による証明機能を付加するレッジャーサブシステムの、Ethereum 版を用いたチュートリアルのスライドです。

beyond-blockchain.org

June 06, 2018
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  1. BBc-1 BBc-1 ( ) / (1) (2) (3) BBc-1 —

    Ethereum — 2022-11-14 – p.3/22
  2. #JUDPJO ##D$PSF ϨοδϟʔαϒγεςϜ ΞϓϦέʔγϣϯ ͦ ͷ ଞ ͞ · ͟

    · ͳ Ξ ϓ Ϧ ͷ Մ ೳ ੑ ڞ௨ϥΠϒϥϦ ##D ։ൃ߲໨ ஍ Ҭ ௨ ՟ Ξ ϓ Ϧ ϙ Π ϯ τ Ξ ϓ Ϧ དྷ ྺ ূ ໌ Ξ ϓ Ϧ ʜ ॳظʹ͓͍ͯଘࡏূ໌Λґଘ ΞϯΧϦϯά ֤ϊʔυʹ͓͚Δه࿥ʹ͸ ֤छσʔλϕʔεΛར༻Մೳ TRMJUF.Z42-ͦͷଞ%# BBc-1 σδλϧ௨՟ϥΠϒϥϦ ͦͷଞͷϥΠϒϥϦ CCDMJC 1ZUIPO (P +4 FUD Bitcoin Ethereum ( ) (Proof of Context) ( ) BBc-1 — Ethereum — 2022-11-14 – p.4/22
  3. Ethereum Solidity Ethereum ( ) version 0.5 ledger subsystem py-solc-x

    solc (dependencies) solc py-solc-x BBc-1 — Ethereum — 2022-11-14 – p.5/22
  4. Solidity macOS + Homebrew $ brew tap ethereum/ethereum $ brew

    install solidity Linux (Ubuntu 16.04 LTS ) (x86/AMD64 ) $ sudo apt install software-properties-common $ sudo add-apt-repository -y ppa:ethereum/ethereum $ sudo apt update $ sudo apt install solc ARM solidity git clone dependencies Windows 10 Linux (Ubuntu 16.04 LTS ) BBc-1 — Ethereum — 2022-11-14 – p.6/22
  5. wget (macOS ) macOS wget ( ) $ brew install

    wget wget $ wget ( ) wget dyld: Library not loaded: /usr/local/opt/gettext/lib/libintl.8.dylib $ brew uninstall --force gettext $ brew install gettext BBc-1 — Ethereum — 2022-11-14 – p.8/22
  6. git clone $ git clone -b develop https://github.com/beyond-blockchain/ledger_subsystem.git $ cd

    ledger_subsystem tar pip (Python ) $ python setup.py sdist $ pip install dist/ledger_subsystem-0.16.tar.gz dist tar pip install Brownie (Python Ethereum ) BBc-1 — Ethereum — 2022-11-14 – p.11/22
  7. infura.io infura.io ID https://infura.io SIGN UP PROJECT ID infura Ethereum

    API infura.io PROJECT ID WEB3_INFURA_PROJECT_ID PROJECT ID (∼/.bash_profile ) $ export WEB3_INFURA_PROJECT_ID= PROJECT ID BBc-1 — Ethereum — 2022-11-14 – p.13/22
  8. Brownie “bbc_core.py” BBc-1 Core bbc_core.py Brownie $ eth_subsystem_tool.py -w ~/.bbc1

    brownie ID BBcAnchor Linux (ARM) (AMD64 ) $ python # >>> import solcx >>> solcx.compile_solc(’0.5.17’) # >>> quit() /tmp ~/.solcx/solc-v0.5.17 BBc-1 — Ethereum — 2022-11-14 – p.14/22
  9. Ethereum görli Ethereum $ eth_subsystem_tool.py -w ~/.bbc1 account görli Ethereum

    $ eth_subsystem_tool.py -w ~/.bbc1 new_account BBc-1 Core BBc-1 — Ethereum — 2022-11-14 – p.15/22
  10. g¨ orli ETH (0.1ETH ) Görli Testnet ETH Faucet ETH

    https://goerlifaucet.com ( ) ( ) https://metamask.io/ ETH ( ) $ eth_subsystem_tool.py -w ~/.bbc1 balance wei (1 ETH = 1000000000000000000 wei) BBc-1 — Ethereum — 2022-11-14 – p.16/22
  11. BBcAnchor ( ) $ eth_subsystem_tool.py -w ~/.bbc1 deploy BBcAnchor deployed

    at BBc-1 Core BBc-1 — Ethereum — 2022-11-14 – p.17/22
  12. BBcAnchor.sol ( ) contract BBcAnchor { mapping (uint256 => uint)

    public _digests; constructor () public { } function getStored(uint256 digest) public view returns (uint block_no) { return (_digests[digest]); } function isStored(uint256 digest) public view returns (bool isStored) { return (_digests[digest] > 0); } function store(uint256 digest) public returns (bool isAlreadyStored) { bool isRes = _digests[digest] > 0; if (!isRes) { _digests[digest] = block.number; } return (isRes); } } BBc-1 — Ethereum — 2022-11-14 – p.18/22
  13. (“bbc_core.py” ) $ eth_subsystem_tool.py -w ~/.bbc1 config_demo 100 30 domain_id

    ( ) “bbc_core.py” $ eth_subsystem_tool.py -w ~/.bbc1 -d enable BBc-1 — Ethereum — 2022-11-14 – p.20/22
  14. 3 $ eth_subsystem_tool.py -w ~/.bbc1 -d register_demo 3 transaction_id (

    ) $ eth_subsystem_tool.py -w ~/.bbc1 -d verify 30 verify BBc-1 — Ethereum — 2022-11-14 – p.21/22