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zkCoins

zkCoins is a novel blockchain design with strong privacy and scalability properties. It combines client-side validation with a zero-knowledge proof system. The chain is reduced to a minimum base layer to prevent double spending. Most of the verification complexity is moved off-chain and communicated directly between the individual sender and recipient of a transaction. There are very few global consensus rules, which makes block validation simple. Not even a global UTXO set is required.

In contrast to zk-rollups there is no data availability problem, and no sequencer is required to coordinate a global proof aggregation. The protocol can be implemented as an additional layer contained in Bitcoin's blockchain (similar to RGB[^5] or Taro[^6]) or as a standalone sidechain.

The throughput scales to hundreds of transactions per second without sacrificing decentralization.

Design Principles

The core design principle is to *"use the chain for what the chain is good for, which is an immutable order

sjodiel

package example.sort;

public final class Quicksort {

  /**
   * Sort the given array, calling the recursive sort method..
   * 
   * @param array
   *          the array we are sorting
   */

sjodiel

public class ArvoreBinaria {
    private No raiz;
    private ArvoreBinaria arvoreEsquerda;
    private ArvoreBinaria arvoreDireita;

    public ArvoreBinaria() { }

    public ArvoreBinaria getArvoreDireita() {
        return arvoreDireita;
    }

sjodiel

#! py
def solve(matrix, mul):
    width = len(matrix)
    if width == 1:
        return mul * matrix[0][0]
    else:
        sign = -1
        total = 0
        for i in range(width):
            m = []

sjodiel

1. Clone your fork:

git clone git@github.com:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream

sjodiel

#!/bin/bash
# Adicione um novo remote; pode chamá-lo de "upstream":

git remote add upstream https://github.com/usuario/projeto.git

# Obtenha todos os branches deste novo remote,
# como o upstream/master por exemplo:

git fetch upstream

sjodiel

#Download Elementary OS from here: 
#http://sourceforge.net/projects/elementaryos/files/stable/

#First you update your system
sudo apt-get update && sudo apt-get dist-upgrade


#Install Google Chrome
wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
sudo sh -c 'echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list'

sjodiel

• https://atom.io/packages/atom-typescript
• https://atom.io/packages/file-icons
• https://atom.io/packages/minimap
• https://atom.io/packages/pigments
• https://atom.io/packages/angular-2-typeScript-snippets

sjodiel

#include <stdio.h>

typedef struct head {
  int * first;
  int * last;
  int count;
} head_t;

typedef struct node {
  struct node *prev;

sjodiel

/*==========================================================
    Open Sans
==========================================================*/

@font-face {
    font-family: 'OpenSans';
    src: url('../fonts/OpenSans-Light-webfont.eot');
    src: url('../fonts/OpenSans-Light-webfont.eot?#iefix') format('embedded-opentype'),
         url('../fonts/OpenSans-Light-webfont.woff') format('woff'),
         url('../fonts/OpenSans-Light-webfont.ttf') format('truetype'),