Consensys_101
notes of blockchain and ethereum
Week One Big Picture
1.1 overlook of the stack
1）frount-end: React
2）API layer: WEB3----web3.py
(MORE: node.js,typescript）
3）transaction layer: golang(geth),Kotlin
4）Kaleido(private network Baas) and Infura(gateway to punlic network)
5）Database
6）AWS EC2/EKS
1.2 GraphQL
a query language for APIs and a runtime for fulfilling those queries with your existing data.
a complete and understandable description of the data in your API
complete type system
combine multy RUSTful requests into one
N+1 issue
Three layers:
-
Relay or appollo-client, etc.
1.3 Kaleido
fully-encompassed SaaS (Software as a Service) platform
simplify the process of building out consortia and bootstrapping private blockchain networks
provides a “permissioned” implementation of the Ethereum protocol
member participants operate with authenticated identities backed by digital certificate chains
Prerequisites
--REST API --applications and CLI
create network
API 101
API key
export APIURL="https://console.kaleido.io/api/v1" export APIKEY="YOUR_API_KEY" export HDR_AUTH="Authorization: Bearer $APIKEY" export HDR_CT="Content-Type: application/json"
JSON Sytnax
Create consortium
Create environment
Create node
https://docs.kaleido.io/developer-materials/api-101/
1.4 Infura
from truffel to Infura
HDWalletProvider object
var HDWalletProvider = require("truffle-hdwallet-provider");
var mnemonic = "orange apple banana ... ";
network---Ropsten
contract
geth attach infura
1.5 web3(.py)
Web3.js talks to The Ethereum Blockchain with JSON RPC, which stands for "Remote Procedure Call" protocol.
Web3 Technology Stack
web3.js
http://www.dappuniversity.com/articles/web3-js-intro
Week Two
2.1 Test net
2.1.1 Rinkebey
2.1.2 Fancet
The ether faucet is running on the Rinkeby network.
In order to avoid spam attacks, requests are tied to twitter (or FB).
- Make a tweet with Ethereum Address pasted into the contents.
- Copy-paste the tweet url into Rinkeby Faucet and choose "give me Ether"
truffle---Infura---Rinkebey
2.1.3 Ganache
previously testRPC
https://github.com/trufflesuite/ganache/releases
version 2
docs: https://truffleframework.org/docs/ganache/using
2.2 Truffle tutorial
https://www.trufflesuite.com/tutorials
2.3 Cryptozombie Review
A serious of coding games that help people to start learning Blockchain.
notes available: https://github.com/loomnetwork/cryptozombie-lessons
https://github.com/loomnetwork/cryptozombie-lessons/tree/master/zh
Week Three
3.1 Enterprise chain -- Hyper Ledger
https://hyperledger-fabric.readthedocs.io/en/release-1.2/tutorials.html
3.2 Smart contract tutorial
https://github.com/monax/legacy-docs
3.3 Developer Program On Demand
https://consensys.net/academy/ondemand/
Week Four
4.1 Authentication vs Authorization
https://www.okta.com/identity-101/authentication-vs-authorization/
Authentication means confirming your own identity,
while authorization means granting access to the system.
In simple terms, authentication is the process of verifying who you are,
while authorization is the process of verifying what you have access to.
4.2 Oauth2 & OIDC
Video: introduction
https://www.youtube.com/watch?v=996OiexHze0
Tutorial: Flask & OKTA
https://developer.okta.com/blog/2018/07/12/flask-tutorial-simple-user-registration-and-login
https://www.jerney.io/secure-apis-kong-keycloak-1/
zuot aoye 11:33 1210 16521213 nodejs zenmebusuan