How to create a private Ethereum network

Musings of a Meta-physician

Objectives:

  1. To create a private Ethereum network
  2. To deploy a simple contract to your private Ethereum network
  3. To interact with a contract on your private Ethereum network

Target audience:  

Ethereum developers.

Necessity: 

The need for this tutorial arises from outdated Ethereum documentation, resulting in hair-pulling, heartburn, and insomnia.

Precautions:

Isolate your development environment, and your private Ethereum network, from any real Ether you might have. It’s easy to compromise your machine and lose real money if you slip up.

Step 1: Set up a virtual server and install Ethereum command-line tools

Many tutorials guide you through deploying contracts using the Ethereum wallet GUI. I’m using the Go Ethereum client (geth) and encourage others to learn how to use the command line interface (CLI). The better you understand the Ethereum client’s internal workings and the anatomy of a blockchain, the more power to you. It doesn’t matter which hostingservice you…

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Why We Eloped

Words of Lizdom

liz wedding 185

In 2015, couples spent an average of $32,641 on their wedding. 

I don’t know about you, but a price tag like this gives me anxiety. This is one of several reasons we eloped.

Yes, we eloped. It was a lovely, teeny-tiny ceremony in October 2013 in Woodinville, WA.

When it comes up, I get a lot of questions. There are several reasons we made this choice, and I don’t regret it.

If your dream is to have a huge ceremony, that’s fine. However, I bring this up because I’ve had conversations with brides-to-be admitting they never wanted a huge ceremony and feel completely overwhelmed.

I’m here to tell you it doesn’t have to be this way.

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Building an HTML5 Photo Editor

code.flickr.com

Introducing guest blogger, Ari Fuchs. He is a Lead API Engineer and Developer Evangelist at Aviary. He has spent the last 3 years building out Aviary’s internal and external facing APIs, and is now working with partners to bring Aviary’s tools to the masses. He also did a lot of work to bring the Aviary editor to Flickr. Follow him on Twitter and send him a nice message to make him feel better about his stolen bike. Now, on to his post…

At Aviary, we’ve been passionate about photos since day one. It’s been five years since we released our first creative tool, Phoenix, a powerful, free Flash-based photo editor. Phoenix offered functionality on par with Adobe Photoshop 5 and a price point that opened its usage to anyone with an internet connection. As amateur photographers worldwide began trying their hand at editing, we watched our product…

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React: What WPF Should Have Been

Wizards of Smart

I’ve been learning and using React, and I like it’s general approach to building UIs. I really like the unidirectional data flow, though I’m still on the fence about virtual DOM. I get the benefits and really like that it makes testing really easy. However, I am not sold on its being unquestionably better than directly manipulating the DOM or Google’s Incremental DOM. Nevertheless, React, Om, Elm, and others have proven it a viable and fast approach.

One of the best advantages of the aforementioned frameworks is they all allow you to compose custom, reusable elements or components building off of existing HTML elements. (I think WebComponents allows something similar, though I have not personally liked its direction.) Another advantage is that you can declare all these things within JavaScript or your transpiler of choice.

I liked many similar attributes of WPF and XAML when I…

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Becoming a Fool – A Much Better View

Wake Up My Faith

As our culture of Christian-y leaders, icons, and unapproachable gurus of influence continue to graduate disciples who are more interested in platform building than bending their knees, we’ve inadvertently, and ironically buried a generation of young hopefuls in a canyon of “well done my good and famous servant” darkness. The good news, however, is that it only takes a flicker of light to conquer a canyon of darkness.

I was recently blessed with one the most encouraging emails I’ve ever received. And it came from one of the wisest, kindest, and youngest people I’ve had the privilege of being connected with on this seven year journey of living by faith, and writing about the results. Jordan S. is a seventeen year old high school student, who has been on quite a journey of her own. As a result, this bright young light has been used by God to not only…

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