BBc-1 実習 / Practicing BBc-1

2018年11月7日(水)、ブロックチェーンハブ主催で開催されたブロックチェーンアカデミー「【ハンズオン】スマートコントラクトプログラミング(3) BBc-1 実習」にて使用したスライドです。

Transcript

1. BBc-1 (3) CSO / SFC ( https://speakerdeck.com/ks91 ) ks91@blockchainhub.co.jp BBc-1 — (3) — 2018-11-07 – p.1/43
2. 1. : ERC20 2. : 3. : BBc-1 — (3) — 2018-11-07 – p.2/43
3. 1. BBc-1 2. BBc-1 3. 4. Ethereum ( ) BBc-1 — (3) — 2018-11-07 – p.3/43
4. 1. BBc-1 BBc-1 BBc-1 — (3) — 2018-11-07 – p.4/43
5. BBc-1 BBc-1 ( ) / (1) (2) (3) BBc-1 — (3) — 2018-11-07 – p.5/43
6. #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 Bitcoin Ethereum ( ) ( ) BBc-1 — (3) — 2018-11-07 – p.6/43
7. 2. BBc-1 : https://github.com/beyond-blockchain/bbc1/blob/develop/docs/BBc1_core_tutorial_installation_ja.md Python BBc-1 — (3) — 2018-11-07 – p.7/43
8. Python 3.5.0 (3.6.0 ) ( + pipenv) macOS + Homebrew $ brew install libtool automake pkg-config libffi autoconf openssl Linux (Ubuntu 16.04 LTS ) $ sudo apt install -y git tzdata openssh-server libffi-dev net-tools autoconf automake libtool libssl-dev pkg-config make Windows 10 Linux (Ubuntu 16.04 LTS ) BBc-1 — (3) — 2018-11-07 – p.8/43
9. Python (venv) macOS ‘python3.6’ ‘python3’ $ python3.6 -m venv bbcenv $ source bbcenv/bin/activate (bbcenv) $ pip install -U pip (bbcenv) $ deactivate BBc-1 — (3) — 2018-11-07 – p.9/43
10. pip $ pip install bbc1 develop $ bbc_core.py --no_nodekey --no_nodekey Python 3.7.0 “bad argument to internal function” $ pip install -U --force-reinstall --no-binary :all: gevent <CTRL>+C BBc-1 — (3) — 2018-11-07 – p.10/43
11. (develop pip ) pip install $ git clone https://github.com/beyond-blockchain/bbc1.git $ cd bbc1 $ python setup.py sdist $ pip install dist/bbc1-1.1.tar.gz dist tar pip install BBc-1 — (3) — 2018-11-07 – p.11/43
12. 3. BBc-1 Core : https://github.com/beyond-blockchain/bbc1/blob/develop/docs/BBc1_core_tutorial_file_proof_ja.md BBc-1 — (3) — 2018-11-07 – p.12/43
13. file proof ( ) ( ) ( ) BBc-1 — (3) — 2018-11-07 – p.13/43
14. bbc_core.py venv file_proof $ source bbcenv/bin/activate BBc-1 — (3) — 2018-11-07 – p.14/43
15. --help $ file_proof.py --help file_proof.py $ file_proof.py keypair $ file_proof.py setup BBc-1 — (3) — 2018-11-07 – p.15/43
16. $ cat > test.txt BBC HEAVEN. <CTRL>+D $ more test.txt BBC HEAVEN. file_proof.py BBc-1 Core $ file_proof.py store test.txt BBc-1 Core BBc-1 — (3) — 2018-11-07 – p.16/43
17. (1) ——- Dump of the transaction data —— * transaction_id: b’de0af83d66170096dac81c4889bed3e1a20b6ab3eb3ae789adf8a580e25c100c’ version: 0 timestamp: 1529296860 Event[]: 0 Reference[]: 0 Relation[]: 1 [0] asset_group_id: b’45b2a200ccdcdcc3fb80cc9d423e1069f3ca726157f6492b4a70a48e4a1713ab’ Asset: asset_id: b’8bd26d0774050015181185de631c48bdfba411b64fb318f3cbfe8df2dcc80a9d’ user_id: b’e59c553504ca7a54f888eb47e61b773a221ae1311bd58ec4c0912d71c443d715’ nonce: b’83136a5fe6a76ab0’ file_size: 12 file_digest: b’7a30a5ef92e4f84287225e980c48ad3a7c29ea929a710d6b798a9bdcc41afc97’ body_size: 21 body: b’Owner is user_default’ BBc-1 — (3) — 2018-11-07 – p.17/43
18. (2) Witness: [0] user_id: b’e59c553504ca7a54f888eb47e61b773a221ae1311bd58ec4c0912d71c443d715’ sig_index: 0 Cross_Ref: None Signature[]: 1 [0] key_type: 1 signature: b’2a99a304311eacec015f99638584865faf5c7b5b609f0a04762ea40828baf11934df 6cc22289287362b9f9d6deb7f2c6f9528d0aab61b059292f50646942e553’ pubkey: b’04dc03d221c173fb2cf49bd4f2077fdd88babaa8234a96353b245cb3450ca665a12adb1 86695040188b366f12569b892c63f8410b9e471c4f1cf6f3ff96ddc48fc’ BBc-1 — (3) — 2018-11-07 – p.18/43
19. BBc-1 Core $ rm test.txt $ file_proof.py get test.txt BBc-1 — (3) — 2018-11-07 – p.19/43
20. BBc-1 Core $ file_proof.py verify test.txt 1 test.txt is valid 1 test.txt is invalid BBc-1 — (3) — 2018-11-07 – p.20/43
21. BBc-1 Core $ file_proof.py update test.txt BBc-1 Core verify $ file_proof.py verify test.txt BBc-1 — (3) — 2018-11-07 – p.21/43
22. (1) ——- Dump of the transaction data —— * transaction_id: b’346cd3f414a3ed25b7180a80bde41b1b611c13a4de0018f9684356312fa3ddbf’ version: 0 timestamp: 1529297518 Event[]: 0 Reference[]: 0 Relation[]: 1 [0] asset_group_id: b’45b2a200ccdcdcc3fb80cc9d423e1069f3ca726157f6492b4a70a48e4a1713ab’ Pointers[]: 1 [0] transaction_id: b’de0af83d66170096dac81c4889bed3e1a20b6ab3eb3ae789adf8a580e25c100c’ asset_id: None Asset: asset_id: b’69e01aef0e2854aa45625036f824c8275ecfacf48090b07b21bed216f5a67b34’ user_id: b’e59c553504ca7a54f888eb47e61b773a221ae1311bd58ec4c0912d71c443d715’ nonce: b’1f0e962766009a52’ BBc-1 — (3) — 2018-11-07 – p.22/43
23. (2) file_size: 11 file_digest: b’d866539f224896613df91023f0a9e226085451d6adf1dc5282cbba129d553713’ body_size: 21 body: b’Owner is user_default’ Witness: [0] user_id: b’e59c553504ca7a54f888eb47e61b773a221ae1311bd58ec4c0912d71c443d715’ sig_index: 0 Cross_Ref: None Signature[]: 1 [0] key_type: 1 signature: b’5eeb9ca0ce527c90e62a6d087e13ccc009b621974420a5f6201ad65443d0b600c4c2c0 ac6f4ba22beee8a1e265853d13fc3e147ad38c2bebc9b06869559925ff’ pubkey: b’04dc03d221c173fb2cf49bd4f2077fdd88babaa8234a96353b245cb3450ca665a12adb186 695040188b366f12569b892c63f8410b9e471c4f1cf6f3ff96ddc48fc’ BBc-1 — (3) — 2018-11-07 – p.23/43
24. / ( ) $ file_proof.py keypair $ file_proof.py setup $ file_proof.py wait -o someone ID $ file_proof.py send test.txt “someone” file_proof.py get BBc-1 — (3) — 2018-11-07 – p.24/43
25. (1) verify ——- Dump of the transaction data —— * transaction_id: b’8775246772587c9b35329ae39a2d6826175c2cb7ba98da80f51e818db4a144d7’ version: 0 timestamp: 1529298154 Event[]: 0 Reference[]: 0 Relation[]: 1 [0] asset_group_id: b’45b2a200ccdcdcc3fb80cc9d423e1069f3ca726157f6492b4a70a48e4a1713ab’ Pointers[]: 1 [0] transaction_id: b’346cd3f414a3ed25b7180a80bde41b1b611c13a4de0018f9684356312fa3ddbf’ asset_id: None Asset: asset_id: b’97a5023af9fcdba1fb72e12f34c9bf05ee1b24636c02f8d88f5a7f9d269115b6’ user_id: b’2a59d59e3809f827ce709d3815e3950eef4a6a93af5557a93a7fdfba71460843’ nonce: b’18607aaf24de83ee’ BBc-1 — (3) — 2018-11-07 – p.25/43
26. (2) file_size: 11 file_digest: b’d866539f224896613df91023f0a9e226085451d6adf1dc5282cbba129d553713’ body_size: 52 body: b’Ownership is transfered from user_default to someone’ Witness: [0] user_id: b’e59c553504ca7a54f888eb47e61b773a221ae1311bd58ec4c0912d71c443d715’ sig_index: 0 [1] user_id: b’2a59d59e3809f827ce709d3815e3950eef4a6a93af5557a93a7fdfba71460843’ sig_index: 1 Cross_Ref: None BBc-1 — (3) — 2018-11-07 – p.26/43
27. (3) Signature[]: 2 [0] key_type: 1 signature: b’149b0fd48137fec9a076b9214de857da285f2bcc7e634579ac519eada35386179b9c 78e6aa20910165648d8bef62e625d449445626d9c7bcdfaf63d1279331ee’ pubkey: b’04dc03d221c173fb2cf49bd4f2077fdd88babaa8234a96353b245cb3450ca665a12adb1 86695040188b366f12569b892c63f8410b9e471c4f1cf6f3ff96ddc48fc’ [1] key_type: 1 signature: b’51f77ef2b66bd61db125facbc478c03df5a258af8fded20501c00665594c910604e7d e5c5b75d0259cf8716acd1e99a193fc79f20173b175e1b8bfe72c530df0’ pubkey: b’045833b8045305cb4da21f17cef4c44941de6152d0cfc0c77bc638071a8b86337a59f474 fc11e924a5afe7f3fc4e43491a55193c32f9403ca574ddc088cf8d5158’ BBc-1 — (3) — 2018-11-07 – p.27/43
28. file_proof BBc-1 Core BBc-1 — (3) — 2018-11-07 – p.28/43
29. 4. Ethereum ( ) BBc-1 — (3) — 2018-11-07 – p.29/43
30. Ethereum Go Ethereum Solidity BBc-1 — (3) — 2018-11-07 – p.30/43
31. Go Etheruem macOS + Homebrew $ brew install geth Linux (Ubuntu 16.04 LTS ) $ sudo apt install software-properties-common $ sudo add-apt-repository -y ppa:ethereum/ethereum $ sudo apt update $ sudo apt install ethereum Windows 10 Linux (Ubuntu 16.04 LTS ) BBc-1 — (3) — 2018-11-07 – p.31/43
32. Solidity macOS + Homebrew $ brew install solidity Linux (Ubuntu 16.04 LTS ), Windows 10 $ sudo apt install solc BBc-1 — (3) — 2018-11-07 – p.32/43
33. BBc-1 Core BBc-1 — (3) — 2018-11-07 – p.33/43
34. git clone $ git clone https://github.com/beyond-blockchain/ledger_subsystem.git $ cd ledger_subsystem tar pip $ python setup.py sdist $ pip install dist/ledger_subsystem-0.11.1.tar.gz BBc-1 — (3) — 2018-11-07 – p.34/43
35. Ethereum populus (Python Ethereum ) Genesis Ethereum BBcAnchor BBc-1 — (3) — 2018-11-07 – p.35/43
36. (1) “bbc_core.py” BBc-1 Core bbc_core.py populus $ eth_subsystem_tool.py -w ∼/.bbc1 populus Genesis $ eth_subsystem_tool.py -w ∼/.bbc1 genesis Ethereum $ eth_subsystem_tool.py -w ∼/.bbc1 new_account BBc-1 — (3) — 2018-11-07 – p.36/43
37. (2) geth $ eth_subsystem_tool.py -w ∼/.bbc1 run_geth $ tail -f geth.log BBcAnchor ( ) $ eth_subsystem_tool.py -w ∼/.bbc1 deploy geth $ eth_subsystem_tool.py -w ∼/.bbc1 stop_geth “run_geth” BBc-1 — (3) — 2018-11-07 – p.37/43
38. BBcAnchor.sol ( ) contract BBcAnchor { mapping (uint256 => uint) public _digests; constructor () public { } function getStored(uint256 digest) public returns (uint block_no) { return (_digests[digest]); } function isStored(uint256 digest) public 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 — (3) — 2018-11-07 – p.38/43
39. BBc-1 — (3) — 2018-11-07 – p.39/43
40. (“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 — (3) — 2018-11-07 – p.40/43
41. 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 — (3) — 2018-11-07 – p.41/43
42. Ethereum verify “eth_subsystem_tool.py” “subsystem_tool_lib.py” BBc-1 — (3) — 2018-11-07 – p.42/43
43. BBc-1 — (3) — 2018-11-07 – p.43/43