React PoS

Update to React PoS - New Order Page & More

React PoS Updates! The React Point-of-Sale app functionality has been further extended. Changes and new features include: New Order page Settings are now saved on-the-go (no more save button) New Settings: Set exchange rate source Set currency (30+ currencies available) Configure Discount and Sales Tax presets (to be used on the new order page) Added order detail to Sales Ledger page Improved responsive behaviour of the numpad. [Read More]

Update to Pyxpub and React PoS

Pyxpub Github Repo New API endpoint /api/rate A new API endpoint has been added to enable more choice for exchange rate sources and currency rates. The rate request allows you to poll the current exchange rate and supported currencies for your preferred exchange rate source. Poll supported currencies for source /api/rate?source=<source> Fetch exchange rate /api/rate?source=<source>&currency=<CUR> Sources CryptoCompare Kraken Coinbase/GDAX Supported currencies CryptoCompare ["EUR", "USD", "GBP", "AUD", "BRL", "CAD", "CHF", "CLP", "CNY", "CZK", "DKK", "HKD", "HUF", "IDR", "ILS", "INR", "JPY", "KRW", "MXN", "MYR", "NOK", "NZD", "PHP", "PKR", "PLN", "RUB", "SEK", "SGD", "THB", "TRY", "TWD", "ZAR"] Kraken ["EUR", "USD"] Coinbase/GDAX ["EUR", "USD"] Examples Poll supported currencies for specified source curl 'http://localhost:8080/api/rate? [Read More]

Introducing React Point-of-Sale and Pyxpub!

Empower merchants to bring Bitcoin Cash into our daily lives! Introducing React PoS & Pyxpub React Point-of-Sale is a client-side point-of-sale app for Bitcoin Cash. It runs in the browser and fetches its data from a private payment gateway, pyxpub, which I’ll introduce later. It best explains itself by checking out the demo. Demo Github Repo This JavaScript based web app is made to showcase the features of pyxpub, and ideally can serve as an example for developers to develop more merchant apps on top of pyxpub. [Read More]

What is Bitcoin Cash?

Bitcoin Cash (BCH) Bitcoin Cash is a digital currency which can be used at any location with internet or phone access. You can use it with your phone, tablet or computer to send and receive payments, donations or any type of transaction for that matter. It is fully decentralized, with no central bank and requires no trusted third parties to operate. It is fully functional world-wide electronic cash for the internet. [Read More]

The Bitcoin Whitepaper

The Bitcoin Whitepaper Download: bitcoin.pdf This is the most important document of them all. Whether you’re a newcomer trying to get a grasp on the concept or a seasoned verteran. This is where you start and this is where you come back to when you loose perspective. For posterity’s sake the Bitcoin whitepaper has also been uploaded to the blockchain. You can find the pdf in the following transaction: 54e48e5f5c656b26c3bca14a8c95aa583d07ebe84dde3b7dd4a78f4e4186e713 (source) [Read More]

Bitcoin Cash Marketing Images

1. Introduction I was recently searching for “Bitcoin Cash Accepted here!” buttons to embed in a webshop. I was rather dissapointed with the results and ended up making some of my own. After seeing positive comments and feedback on work I shared earlier on reddit, I dediced to clean up my working directory and share everything. This should make it easy for anyone to customize the buttons and logos to fit on their website. [Read More]

Generate Bitcoin Cash receiving addresses from an Electron-Cash xpub key

Introduction The aim of this tutorial is to describe a way of generating unique Bitcoin Cash receiving addresses without having the private keys or seed present on that machine. Particularly useful if you want to build point of sale or e-commerce applications. BIP 32 Hierarchical Deterministic Wallets (wallets which can be shared partially or entirely with different systems, each with or without the ability to spend coins) offer this funtionality through its deterministic key generation scheme, more precicely the use of an xpub key. [Read More]

Electron Cash one of the first wallets to integrate new CashAddress format

CashAddress Electron Cash is one of the first BCH wallets to fully integrate the new CashAddr format spec for Bitcoin Cash addresses, nicely ahead of schedule. Allowing you to easily flip back and forth between the old and new CashAddr format and integrating a handy address converter tool. Since there is still some confusion and uncertainty about this change, I thought a few pictures could be worth a thousand words. [Read More]

KVM live & incremental VM backup with BORG

WORKING DRAFT DOCUMENT - INCOMPLETE 0. Preface Live incremental VM backups on a stand-alone KVM hypervisor, is something I wanted to get to work for quite some time, but never found the time to. Until now. Turns out it isn’t all that difficult. With a combination of libvirt snapshots, borg, rsnapshot and systemd – and optionally a cloud storage provider – one can create a very nice and robust backup workflow. [Read More]

Dnsmasq Ad & Tracker Blocking DNS Forwarder

Ansible Role & Playbook You can configure dnsmasq as a dns request forwarder while actively blocking known ad and tracker domains. This does wonders for your online privacy and page load times, providing a better browsing experience. I will be using ad server list. You can use any list you want, just be sure you can get it into a format dnsmasq can read. I’m running the Arch Linux ARM OS on a Raspberry Pi 2, but you can do this with any linux setup. [Read More]