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

BBc-1 の開発中の共通ライブラリとデジタル通貨ライブラリ、および payment.py サンプルアプリケーションを用いたチュートリアルのスライドです。

1. BBc-1 BBc-1 office@beyond-blockchain.org https://speakerdeck.com/beyondblockchain BBc-1 — BBc-1 — 2020-05-14 – p.1/29
2. BBc-1 ( ) 2 BBc-1 BBc-1 BBc-1 — BBc-1 — 2020-05-14 – p.2/29
3. BBc-1 BBc-1 ( ) / (1) (2) (3) BBc-1 — BBc-1 — 2020-05-14 – p.3/29
4. #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 — BBc-1 — 2020-05-14 – p.4/29
5. Python3 bbc1 : https://speakerdeck.com/beyondblockchain/bbc-1-hands-on-installation-and-file-content-proof bbc1-lib-std ( ) bbc1-lib-tokens ( ) BBc-1 — BBc-1 — 2020-05-14 – p.5/29
6. bbc1 Python bbc1env $ source bbc1env/bin/activate GitHub git clone $ git clone -b develop https://github.com/beyond-blockchain/bbc1-lib-std.git $ cd bbc1-lib-std tar pip $ python setup.py sdist $ pip install dist/bbc1-lib-std-0.19.tar.gz dist tar pip install BBc-1 — BBc-1 — 2020-05-14 – p.6/29
7. ( SQLite3 ) ( ) ( ) ( ) ( ) BBc-1 — BBc-1 — 2020-05-14 – p.7/29
8. GitHub git clone ( ) $ git clone -b develop https://github.com/beyond-blockchain/bbc1-lib-tokens.git $ cd bbc1-lib-tokens tar pip (Python ) $ python setup.py sdist $ pip install dist/bbc1-lib-tokens-0.16.tar.gz dist tar pip install bbc_core.py $ bbc_core.py --no_nodekey BBc-1 — BBc-1 — 2020-05-14 – p.8/29
9. (mint) / mint mint BBc-1 — BBc-1 — 2020-05-14 – p.9/29
10. payment payment BBc-1 — BBc-1 — 2020-05-14 – p.10/29
11. payment payment bbc1-lib-tokens bbc1-lib-std payment-web BBc-1 — BBc-1 — 2020-05-14 – p.11/29
12. payment GitHub git clone $ git clone https://github.com/beyond-blockchain/examples.git $ cd examples/payment payment.py BBc-1 BBc-1 — BBc-1 — 2020-05-14 – p.12/29
13. payment ( ) ( (mint) ) ( ) BBc-1 — BBc-1 — 2020-05-14 – p.13/29
14. $ python payment.py --help (bbc_core.py ) $ python payment.py setup “./.bbc1_app_support” BBc-1 — BBc-1 — 2020-05-14 – p.14/29
15. alice bob $ python payment.py def-user alice $ python payment.py def-user bob alice bob ( ) BBc-1 — BBc-1 — 2020-05-14 – p.15/29
16. $ python payment.py user alice ∗bob bob ( bob ) alice $ python payment.py user alice ∗alice bob BBc-1 — BBc-1 — 2020-05-14 – p.16/29
17. $ python payment.py def-currency Yen JPY default_spec.json (mint) ( ) $ python payment.py currency ∗Yen BBc-1 — BBc-1 — 2020-05-14 – p.17/29
18. alice 1,000 $ python payment.py issue 1000 alice mint alice bob $ python payment.py status alice balance = 1000JPY. $ python payment.py status bob balance = 0JPY. BBc-1 — BBc-1 — 2020-05-14 – p.18/29
19. alice bob 100 $ python payment.py transfer 100 bob alice mint $ python payment.py status alice balance = 900JPY. $ python payment.py status bob balance = 100JPY. BBc-1 — BBc-1 — 2020-05-14 – p.19/29
20. 2 $ python payment.py def-currency Dollar USD decimal_2.json mint ( ) $ python payment.py currency Yen ∗Dollar BBc-1 — BBc-1 — 2020-05-14 – p.20/29
21. (1) ( ) bob 10 $ python payment.py issue 10 bob mint alice bob $ python payment.py status alice balance = 0.00USD. $ python payment.py status bob balance = 10.00USD. BBc-1 — BBc-1 — 2020-05-14 – p.21/29
22. (2) $ python payment.py currency Yen ∗Yen Dollar alice bob 1 110 (bob alice 110 1 ) $ python payment.py swap 110 bob 1 Dollar alice, bob, mint, mint BBc-1 — BBc-1 — 2020-05-14 – p.22/29
23. (3) alice bob $ python payment.py status alice balance = 790JPY. $ python payment.py status bob balance = 210JPY. $ python payment.py currency Dollar Yen ∗Dollar $ python payment.py status alice balance = 1.00USD. $ python payment.py status bob balance = 9.00USD. BBc-1 — BBc-1 — 2020-05-14 – p.23/29
24. payment.py payment.py token_lib.BBcMint swap() BBcMint swap() BBc-1 — BBc-1 — 2020-05-14 – p.24/29
25. UTXO ( ) BBc-1 — BBc-1 — 2020-05-14 – p.25/29
26. . . . BBc-1 — BBc-1 — 2020-05-14 – p.26/29
27. token lib mint token_lib.BBcMint mint.transfer() . . . transaction mint.store.sign() . . . mint.store.sign_and_insert() . . . BBc-1 — BBc-1 — 2020-05-14 – p.27/29
28. 319 mint.swap(counter_mint, user.user_id, counter_user.user_id, value1, value2, keypair_this=user.keypair, keypair_that=counter_user.keypair, keypair_mint=currency.keypair, keypair_counter_mint=counter_currency.keypair) ⇓ tx = mint.transfer(user.user_id, counter_user.user_id, value1) counter_mint.transfer(counter_user.user_id, user.user_id, value2, transaction=tx) mint.store.sign(tx, counter_user.user_id, counter_user.keypair) mint.store.sign(tx, mint.mint_id, currency.keypair) mint.store.sign(tx, counter_mint.mint_id, counter_currency.keypair) mint.store.sign_and_insert(tx, user.user_id, user.keypair, mint.idPublickeyMap) BBc-1 — BBc-1 — 2020-05-14 – p.28/29
29. BBc-1 payment.py bbc1-lib-tokens bbc1-lib-std BBc-1 — BBc-1 — 2020-05-14 – p.29/29