This document discusses NEO and Python. It provides code samples for interacting with the NEO blockchain using the neo-python library. It outlines several hands-on exercises, including deploying a simple "Hello World" smart contract, creating an ERC20-compatible NEP5 token, and conducting an ICO token sale. Links are provided to documentation and resources for learning more about NEO, the dBFT consensus algorithm, smart contract development, and the neo-python library.

1. NEO
with Python
NEO 2018 6 23
NEO KEYMAKERS JAPAN

2. neo-python
NEX ICO

3. Blockchain
http://redpinata-development.com/bitcoin-academy/index.php/reader/items/the-blockchain.html

4. NEO Block
http://docs.neo.org/en-us/network/network-protocol.html

5. NEO Block
neo> block 100
{
"hash":
"0x44de2eec0b14f02a53ec302846fda46484213e4c706fd039c5725aca3905669d",
"version": 0,
"previousblockhash":
"0xbd8acda3195516a165bb6c7ad158c457e209ce07e174ba14b5eadfcb2e234c44",
"merkleroot":
"0xbd7df316d30c2f05b7ab478474e5e8776eedc1deb137cefba4143faf4eaaa8d6",
"time": 1522790104,
"index": 100,
"nonce": "4cf5ddac21b3ffb0",
"nextconsensus": "AZ81H31DMWzbSnFDLFkzh9vHwaDLayV7fU",
"script": {
"invocation":
"40d4a2729c90d7ca32eb2dfaeb0182910443a4047c35635841793893dafe2e8ab7df9
d8a9406fb0bc1f34c39665e3506f88c21ae67bec4e3c47a5cc9f3f1a5642e40e4001ed
94193c03c8c5cbaa784f2f9863dad63650bd71c7df3af3f0b18476d2dcb0c69a87e69d
af213abd922b8ba34fa311487a467a5cd82ad03dabb36fe9f6a4095710b06988a63a91
682b9c3f74e48575d423fc54c3754e0f48f9abf10666512a9464470420c6f1776bb0f2
ed40a65ba8f73aeeb892c20f9d3070cedaa76cab7",
"verification":
"532102103a7f7dd016558597f7960d27c516a4394fd968b9e65155eb4b013e4040406
e2102a7bc55fe8684e0119768d104ba30795bdcc86619e864add26156723ed185cd622
102b3622bf4017bdfe317c58aed5f4c753f206b7db896046fa7d774bbc4bf7f8dc2210
3d90c07df63e690ce77912e10ab51acc944b66860237b608c4f8f8309e71ee69954ae"
},
"tx": [
"0xbd7df316d30c2f05b7ab478474e5e8776eedc1deb137cefba4143faf4eaaa8d6"
]
}
JSON

6. NEO VM
NEO

7. NEO dBFT
http://docs.neo.org/en-us/basic/consensus/consensus.html
Speaker
Delegate
f = (n - 1) / 3
n: f:

8. NEO dBFT
http://docs.neo.org/en-us/basic/consensus/consensus.html
prepareRequest PrepareResponse/ChangeView

9. NEO
C# F# VB.Net
Java Kotlin
Python
C C++ Golang
JavaScript

10. NEO
NEO-GUI NEO-CLI NEO-Python
Mac
Windows
Linux
Not yet
Not yet

11. NEO
NEO-GUI NEO-CLI NEO-Python
API

12. NEO Gas
NEO
Gas
ex: deploy/invoke

13. NEO
Dynamic Invocation
http://docs.neo.org/en-us/sc/systemfees.html

14. Hands-On0:
https://store.docker.com/editions/community/docker-ce-desktop-mac
https://qiita.com/____easy/items/0d9a0fd7d6a2c2367f18

15. Hands-On1: neo-python
CityOfZion Docker
Docker https://morizyun.github.io/docker/about-docker-command.html
neo-python https://goo.gl/ut9KjL

16. Hands-On2:
“Hello World”
neo-python https://goo.gl/2Fj3H7
build import contract testinvoke
.py
.avm

17. Hands-On2:
“Hello World”
neo-python https://goo.gl/2Fj3H7
def Main():
print("Hello World")
neo> config sc-events on
neo> build 1-print.py test 07 05 True False

18. Hands-On3:
Ethereum ERC20
neo-python NEP5 https://goo.gl/JF8Gb7
def DoTransfer(t_from, t_to, amount):
def DoTransferFrom(t_from, t_to, amount):
def DoApprove(t_owner, t_spender, amount):
def GetAllowance(t_owner, t_spender):
def BalanceOf(account):
neo> build NEP5.py test 0710 05 True False name []

19. Hands-On4: NEX ICO
1.
neo-python ICO https://goo.gl/gcM8QC
neo> build ico_template.py test 0710 05 True False name []
neo> testinvoke { } mintTokens [] —attach-neo=500
2. ICO

20. NEO KEYMAKERS JAPAN
https://twitter.com/NeoKeymakersJP
Slack Twitter
https://goo.gl/6r5b2w