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John Callahan
John Callahan

John Callahan

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John Callahan
John Callahan
Sep 28, 2018 · 3 min read

Linked Data Signatures with Ruby

I just released the ruby-jsonld-signatures gem: an implementation of the JSON-LD Signatures specification in Ruby that supports the following encryption options:

  • RSA
  • Ed25519
John Callahan
John Callahan
Feb 5, 2018 · 2 min read

quiznoob — creating quiz content

In part 1, you uploaded 1 quiz included in the github distribution (data/qn_mathematics_9x.xlsx)…

John Callahan
John Callahan
Feb 5, 2018 · 5 min read

quiznoob — connect to Circle via IFTTT

Now that you have the quiznoob server up and running (see Part 1), you’ll need to connect it…

John Callahan
John Callahan
Feb 4, 2018 · 6 min read

quiznoob — earn while you learn

TL;DR — a quiz app for Android and iOS that allows kids to earn internet time on Circle via an IFTTT…

54

John Callahan
John Callahan
Oct 23, 2017 · 4 min read

IIW via the Stevens Creek Trail

While planning to attend the Internet Identity Workshop (IIW 25) 17–19 October 2017, I got a package deal via Upside with Virgin America and the Hotel Zico in Mountain View. The hotel is 3.4 miles away from the Computer History Museum where the workshop is traditionally…

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