1.  The Verified Software Toolchain (VST) project is the work of 
Andrew W. Appel, Lennart Beringer, Robert Dockins, Josiah Dodds, 
Aquinas Hobor, Gordon Stewart, and Qinxiang Cao, and others. 
It is copyright and licensed according to the terms in "VST/LICENSE".

2.  The CertiGraph project is copyright 2021 by Aquinas Hobor, 
Shengyi Wang, Anshuman Mohan, and others, and is open-source 
licensed as follows:

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

- Redistribution of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.

- Redistribution in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR THE CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.