ztmr

Author: Kukks

New protocol design: Discrete Payments through Wabisabi coinjoins and Nostr ecnrypted communication

Merchant creates invoice of 0.1BTC
Merchant generates a unique key for invoice
Merchant shows the pubkey of (2), a recommended nostr relay uri
Customer generates a unique key for this invoice payment
Customer posts an encrypted event addressed to pubkey of (3) with a message stating intent to pay invoice of 0.1BTC using a specific wabisabi coordinator

Synology: how to increase shutdown temperature

My Synology DS218+ runs with a single SSD disk that has an operating temperature range of 0–70 °C, which is common for SSDs. Synology, however, has a default shutdown temperature of 61 °C, probably due to HDDs and some lazy programming.

I'm a very light user of NAS – all I want is a network attached storage and silence. My DS218+ has one 2 TB SSD disk in it and I've changed the system fan for a quieter / slower one.

Everything runs fine but about once in a month, I get this notification:

[Synology DS218+]Synology shut down due to disk overheating. >

With src/foo/core.cljs:

(ns foo.core)

(defn calculate []
 (let [xform (comp (map inc) (filter odd?) (take 123))]
   (transduce xform + (iterate inc 0))))

(js/print (calculate))

Create Gitlab Personal Access Token using curl

Prerequisites

You need a Gitlab server up and running
You need user credentials for a (admin) user on the Gitlab server
You need curl and Perl on your server

Airband receivers

Heya all! I was asked to write up a document on how to build your own autonomous airband ACARS receiver and join the club. Before you start shelling out moneys, though, I recommend checking whether there is any plane activity in your area: go visit your favourite plane spotting site (e.g. flightradar24) and observe air traffic for awhile; if there's nothing flying above for the whole day, there is no big point in setting up.

My big thanks extends to Thierry and Hugo who helped to beta test this document. :-)

Without any further delay, let's dive.

To build a working receiver, you will need:

Cryptographic Best Practices

Putting cryptographic primitives together is a lot like putting a jigsaw puzzle together, where all the pieces are cut exactly the same way, but there is only one correct solution. Thankfully, there are some projects out there that are working hard to make sure developers are getting it right.

The following advice comes from years of research from leading security researchers, developers, and cryptographers. This Gist was [forked from Thomas Ptacek's Gist][1] to be more readable. Additions have been added from

	#!/usr/bin/env python3

	# install dependencies:
	# pip install base45 cbor2 (cwt - not used here)

	import sys
	import zlib

	from base45 import b45decode
	from cbor2 import loads

	{ lib ? null, ... }:

	let

	net = {
	ip = {

	# add :: (ip \| mac \| integer) -> ip -> ip
	#
	# Examples:

	[Unit]
	Description=Potentially dangerous fix touchscreen after resume on the XPS 13 9350
	After=suspend.target

	[Service]
	Type=simple
	ExecStart=/home/anthony/path/to/xps-touchscreen-workaround.sh

	[Install]
	WantedBy=suspend.target

	echo -e "\nHidden=true\n"\|sudo tee --append /etc/xdg/autostart/tracker-extract.desktop
	echo -e "\nHidden=true\n"\|sudo tee --append /etc/xdg/autostart/tracker-miner-apps.desktop
	echo -e "\nHidden=true\n"\|sudo tee --append /etc/xdg/autostart/tracker-miner-fs.desktop
	echo -e "\nHidden=true\n"\|sudo tee --append /etc/xdg/autostart/tracker-miner-user-guides.desktop
	echo -e "\nHidden=true\n"\|sudo tee --append /etc/xdg/autostart/tracker-store.desktop

	gsettings set org.freedesktop.Tracker.Miner.Files crawling-interval -2
	gsettings set org.freedesktop.Tracker.Miner.Files enable-monitors false

	tracker reset --hard