Here is a link to a post:
How Much Does Your Software Weigh? - the Equivalence of Mass, Energy and Information
That covers the derivation of Dr. Melvin Vopson's mass-energy-information equivalence principle and is used to calculate the mass of software. It also covers his hypothesis that dark matter might simply be the mass of the Information stored by the Universe.
To see all posts on softwarephysics in reverse order go to:
https://softwarephysics.blogspot.com/
Regards,
Steve Johnston