As of 8 November 2026
This page lists the license information for works by others that I use on this website, in the tools on api.alien-investor.org, in my apps and in the companion materials for my books.
The alien icon in the app icons of Sachwert-Tresor, Alien Pass, Alien Notes, of Alien Fitness up to version 2.8.1 and of the Ausgaben-Tracker up to version 1.11 (including their images and the app trailers on this website) and in earlier versions of this website, of the workshop sheets, of the Bitcoin Beginner Guide (PDF) and of the inserts shipped with the Alien Phone (including screen recordings in videos and on this website) is based on the “Alien” emoji (U+1F47D) from Twemoji. Since 7 November 2026 the website and the tools on api.alien-investor.org use an alien logo of their own, and since 8 November 2026 so do the workshop sheets, the Bitcoin Beginner Guide and the Alien Phone inserts. The app icons will follow with the next versions of the apps (already done for the Ausgaben-Tracker as of version 1.12 and for Alien Fitness as of version 2.9).
Work: Twemoji, graphic “Alien”
(1f47d.svg),
github.com/twitter/twemoji
Author: Copyright 2019 Twitter, Inc and other contributors
License: Creative Commons Attribution 4.0 International (CC BY 4.0)
Changes: The outlines of the head and eyes are taken from the original. The antennas, a gradient, an outline and in some versions a glow were added; the colours were changed; the original mouth was replaced or removed.
Warranty: The authors provide no warranty, see Section 5 of the license.
The fonts Orbitron and Share Tech Mono are served by this website itself, not from Google's servers. Both are licensed under the SIL Open Font License, Version 1.1.
Orbitron: Copyright 2018 The Orbitron Project Authors, Reserved Font Name “Orbitron”, license text
Share Tech Mono: Copyright (c) 2012, Carrois Type Design, Ralph du Carrois, Reserved Font Name “Share”, license text