ltfschoen

Summary of Kusama Validator Lounge, Kusama Watercooler chats up to 11th September 2019

• prometheus exporter - https://github.com/w3f/substrate-telemetry-exporter

  • it expects to run in the same host as a telemetry backend
  • you can run your polkadot nodes in different hosts and configure them to send telemetry data to specific remote telemetry backends as usual, so that you can send data to a backend with the exporter connecte
  • do the same as in the Dockerfile, from a clone of that repo you can run yarn && yarn start

• polkadot secure validator - https://github.com/w3f/polkadot-secure-validator

  • @anson:web3.foundation, @federico:web3.foundation
  • terraform takes care of it on the complete secure validator setup, that's why i wasn't understanding

ltfschoen

• Colony
  • About
    • Colony Network is an open source Ethereum-based protocol providing a general purpose framework to create, operate, and monetize digital companies (internet-native version of traditional organisations) by providing essential functions including: ownership, structure, authority, and human and financial management.
    • Colony infrastructure uses an upgrade pattern that is backward compatible
    • Tools to organise and incentivise a team, community or contributors. Coordinate work, manage budgets, and make decisions from users (collectively from members) according to their ability and reputation-weighted token holdings.
    • Codified structures of reputation, domains, permissions, and incentives, to coordinate working relationships within the permissionless digital companies that use smart contracts and blockchains.
  • Use Cases
    • DAOs
      • Startup wanting to meritocratically split ownership between founders
      • Musician wanting to harness passion of your fanbase

ltfschoen

// @ts-check
const fs = require('fs');

// Import the API & Provider and some utility functions
const { ApiPromise, WsProvider } = require('@polkadot/api');

// import the test keyring (already has dev keys for Alice, Bob, Charlie, Eve & Ferdie)
const testKeyring = require('@polkadot/keyring/testing');

// some constants we are using in this sample

ltfschoen

Accounts

Different accounts are used to manage funds. The underlying cryptography of their account keys is the same:

Stash

• Primary account
• Holds funds. Usually a cold wallet (on piece of paper in a safe, or protected by layers of hardware security)
• Bonds (locks) a portion of its funds with a Controller for participation (since the stake key is kept offline)
• Unbonding requires waiting ~600 blocks before unlocked funds accessible again

ltfschoen

# Copy - CTRL+C
# Paste - CTRL+V
# Copy/Paste Terminal - SHIFT+CTRL+C, SHIFT+CTRL+V

# login to computer
# contact Arnold for copy of password to be sent via Riot

# modify settings
# open Settings > Mouse & Touchpad > Disable Natural Scrolling, Increase Touchpad Speed

ltfschoen

• Do's
  • Structure glossary items (as applicable), i.e.:
    • Sentence 1:
      • What "<glossary_item_name>" is?
    • Sentence 2 (additional clarification):
      • Why "<glossary_item_name>" exists. What's the goal of having it?
      • How "<glossary_item_name>" makes a difference to achieve the why?
      • How "<glossary_item_name>" works?
      • What are the implications of "<glossary_item_name>"?
      • What are the restrictions imposed by "<glossary_item_name>"?

ltfschoen

# filters the list of tasks that are running that have `./target/debug` in the command name
# selects the first one's Process ID (PID), then kills it 
ps aux | grep ./target/debug | awk 'NR==1{print $2}' | sudo xargs kill -9;

ltfschoen

* Setup
  * Create an use a non-root Standard user account and sign-in with it
    * https://apple.stackexchange.com/questions/192365/is-it-ok-to-use-the-root-user-as-a-normal-user
  * Add user to sudoers file. Login as root. Type `sudo visudo` and add to bottom of file `<USERNAME> ALL=(ALL) ALL`
  * Enable mac Firewall
  * Remove icons not wanted by uncheck 'Keep in Dock'
  * Directory structure: code/src/<github-repo>/<username>
  * Install Riot chat: https://riot.im/desktop.html
  * Add to ~/.gitexcludes `.DS_Store`
  * Add to ~/.gitconfig

ltfschoen

echo "Creating an SSH key for you..."
ssh-keygen -t rsa

echo "Please add this public key to Github \n"
echo "https://github.com/account/ssh \n"
read -p "Press [Enter] key after this..."

echo "Installing xcode-stuff"
xcode-select --install

ltfschoen

pragma solidity ^0.4.19;

contract CarGarage {
    uint256 public totalPurchasedPackages = 0;
    uint256 public totalEtherDeposited = 0;
    address public owner;
    
    mapping(address => uint256) accountPackageQuantity;

    event PackagesPurchased(