Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
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...
Search
beyond-blockchain.org
June 06, 2018
Technology
1
680
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
Tweet
Share
More Decks by beyond-blockchain.org
See All by beyond-blockchain.org
BBc-2 ハンズオン さまざまな証明書の登録とその検証 / BBc-2 Hands-on Registration and Verification of Certificates
beyondblockchain
0
110
BBc-2 ハンズオン 基本インストール / BBc-2 hands-on Basic Installation
beyondblockchain
0
76
BBc-1 ハンズオン : RFID タグによる物流追跡 / BBc-1 Hands-on : Using RFID Tags for Logistics Tracking
beyondblockchain
0
73
BBc-1 ハンズオン : さまざまな証明書の登録とその検証(ウェブ版) / BBc-1 Hands on: Registry for Certificates and Verification (on Web)
beyondblockchain
0
180
BBc-1 ハンズオン : さまざまな証明書の登録とその検証 / BBc-1 Hands on: Registry for Certificates and Verification
beyondblockchain
1
240
BBc-1 ハンズオン : デジタル通貨の送金とスワップを通して学ぶBBc-1 トランザクション / BBc-1 Hands on: Digital Currency Transfer and Swap
beyondblockchain
2
390
BBc-1 ハンズオン : インストールとファイル内容証明 / BBc-1 Hands-on : Installation and File-content Proof
beyondblockchain
2
1.4k
BBc トラスト / BBc Trust
beyondblockchain
1
160
BBc-1 設計文書 / BBc-1 (Beyond Blockchain One) Design Paper
beyondblockchain
0
140
Other Decks in Technology
See All in Technology
モバイル界のMCPを考える
naoto33
0
360
KubeCon + CloudNativeCon Japan 2025 Recap by CA
ponkio_o
PRO
0
250
PHP開発者のためのSOLID原則再入門 #phpcon / PHP Conference Japan 2025
shogogg
4
940
Amazon Bedrockで実現する 新たな学習体験
kzkmaeda
2
680
Zephyr RTOSを使った開発コンペに参加した件
iotengineer22
0
160
Understanding_Thread_Tuning_for_Inference_Servers_of_Deep_Models.pdf
lycorptech_jp
PRO
0
150
Liquid Glass革新とSwiftUI/UIKit進化
fumiyasac0921
0
300
KubeCon + CloudNativeCon Japan 2025 Recap Opening & Choose Your Own Adventureシリーズまとめ
mmmatsuda
0
240
GeminiとNotebookLMによる金融実務の業務革新
abenben
0
240
プロダクトエンジニアリング組織への歩み、その現在地 / Our journey to becoming a product engineering organization
hiro_torii
0
140
あなたの声を届けよう! 女性エンジニア登壇の意義とアウトプット実践ガイド #wttjp / Call for Your Voice
kondoyuko
4
510
PHPでWebブラウザのレンダリングエンジンを実装する
dip_tech
PRO
0
220
Featured
See All Featured
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
Making the Leap to Tech Lead
cromwellryan
134
9.4k
It's Worth the Effort
3n
185
28k
Why You Should Never Use an ORM
jnunemaker
PRO
58
9.4k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
20
1.3k
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
124
52k
Visualization
eitanlees
146
16k
Writing Fast Ruby
sferik
628
62k
Designing for Performance
lara
609
69k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
34
3.1k
Gamification - CAS2011
davidbonilla
81
5.3k
RailsConf 2023
tenderlove
30
1.1k
Transcript
BBc-1 Ethereum
[email protected]
https://speakerdeck.com/beyondblockchain BBc-1 — Ethereum — 2022-11-14 –
p.1/22
Ethereum BBc-1 BBc-1 BBc-1 — Ethereum — 2022-11-14 – p.2/22
BBc-1 BBc-1 ( ) / (1) (2) (3) BBc-1 —
Ethereum — 2022-11-14 – p.3/22
#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 ֤ϊʔυʹ͓͚Δهʹ ֤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
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
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
wget (macOS ) Ganache BBc-1 — Ethereum — 2022-11-14 –
p.7/22
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
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 BBc-1 — Ethereum — 2022-11-14 – p.9/22
Python3 bbc1 : https://speakerdeck.com/beyondblockchain/bbc-1-hands-on-installation-and-file-content-proof BBc-1 Core BBc-1 — Ethereum —
2022-11-14 – p.10/22
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
Ethereum infura.io Brownie Ethereum ETH BBcAnchor BBc-1 — Ethereum —
2022-11-14 – p.12/22
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
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
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
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
BBcAnchor ( ) $ eth_subsystem_tool.py -w ~/.bbc1 deploy BBcAnchor deployed
at BBc-1 Core BBc-1 — Ethereum — 2022-11-14 – p.17/22
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
BBc-1 — Ethereum — 2022-11-14 – p.19/22
(“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
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
Ethereum verify “eth_subsystem_tool.py” “subsystem_tool_lib.py” BBc-1 — Ethereum — 2022-11-14 –
p.22/22