OpenDyslexic is licensed under Creative Commons Attribution 3.0 (CC BY 3.0)
https://creativecommons.org/licenses/by/3.0/

OpenDyslexic is based on Bitstream Vera Fonts, which carries the following notice:
Copyright (c) 2003 by Bitstream, Inc. All Rights Reserved.
Bitstream Vera is a trademark of Bitstream, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy
of the fonts accompanying this license ("Fonts") and associated documentation
files (the "Font Software"), to reproduce and distribute the Font Software,
including without limitation the rights to use, copy, merge, publish,
distribute, and/or sell copies of the Font Software, and to permit persons
to whom the Font Software is furnished to do so, subject to the following
conditions:

The above copyright and trademark notices and this permission notice shall
be included in all copies of one or more of the Font Software typefaces.

Attribution to "OpenDyslexic" is required when distributing this font.