Leo Dutra leodutra

Problem

In Arch Linux mkinitcpio -p linux

shows

Possibly missing firmware for module: aic94xx
 Possibly missing firmware for module: wd719x

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

Today (April 16th 2019 at noon) the first major clues to discover key #1 was set to be released in a few cities. A QR code with the words 'orbital' were found at these locations and looked like this: (https://imgur.com/a/6rNmz7T). If you read the QR code with your phone you will be directed to this url: https://satoshistreasure.xyz/k1

At this URL you are prompted to input a passphrase to decrypt the first shard. An obvious first guess was to try the word 'orbital' from the QR code. Not suprisingly this worked! This reveals a congratulations page and presents the first key shard:

ST-0001-a36e904f9431ff6b18079881a20af2b3403b86b4a6bace5f3a6a47e945b95cce937c415bedaad6c86bb86b59f0b1d137442537a8.

Now, we were supposed to wait until April 17th to get clues from the other cities for keys #2 and #3 but that wouldn't stop me from digging around with all the new information we had. All that time "playing" notpron (http://notpron.org/notpron/) years ago was going to help me here.

The first thing I noticed was

How to think about Monads

Initially, Monads are the biggest, scariest thing about Functional Programming and especially Haskell. I've used monads for quite some time now, but I didn't have a very good model for what they really are. I read Philip Wadler's paper Monads for functional programming and I still didnt quite see the pattern.

It wasn't until I read the blog post You Could Have Invented Monads! (And Maybe You Already Have.) that I started to see things more clearly.

This is a distillation of those works and most likely an oversimplification in an attempt to make things easier to understand. Nuance can come later. What we need when first learning something is a simple, if inaccurate, model.

This document assumes a beginner's knowledge of pure functional programming and Haskell with some brief encounters of Monads, e.g. [Functors, Applicatives, And

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	module.exports = {
	config: {
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	fontSize: 12,

	// font family with optional fallbacks
	fontFamily: 'Menlo, "DejaVu Sans Mono", Consolas, "Lucida Console", monospace',

	// terminal cursor background color and opacity (hex, rgb, hsl, hsv, hwb or cmyk)
	cursorColor: 'rgba(248,28,229,0.8)',

	function dedent(callSite, ...args) {

	function format(str) {

	let size = -1;

	return str.replace(/\n(\s+)/g, (m, m1) => {

	if (size < 0)
	size = m1.replace(/\t/g, " ").length;

	const puppeteer = require('puppeteer')

	// Related Issues:
	// 3118 - https://github.com/GoogleChrome/puppeteer/issues/3118#issuecomment-417754246

	async function main() {
	const browser = await puppeteer.launch({
	args: ['--start-maximized'],
	headless: false,
	defaultViewport: null

	cd\Program Files\Microsoft Office\Office16


	cd\Program Files (x86)\Microsoft Office\Office16

	cscript OSPP.VBS /sethst:kms.digiboy.ir
	cscript OSPP.VBS /actcscript OSPP.VBS /dstatus


	slmgr.vbs /ckms

	zmq = require("zmq")
	fs = require("fs")

	var config = JSON.parse(fs.readFileSync(process.argv[2]))

	var connexion = "tcp://"+config.ip+":"
	var shell_conn = connexion+config.shell_port
	var pub_conn = connexion+config.iopub_port
	var hb_conn = connexion+config.hb_port