Regarding the license for "Programmerare.CrsTransformations.Constants":
MIT license for this .NET library with C# constants for EPSG codes.
(and those constants have been generated by using the EPSG Dataset mentioned below)

Regarding the data itself:
Ownership of the EPSG Dataset by IOGP is acknowledged.

See the URL http://www.epsg.org/TermsOfUse.aspx
Some quotes from the above 'Terms of use' URL:
	'The EPSG database is published by IOGP at no charge. 
	 Distribution for profit is forbidden.... 
	 Ownership of the EPSG Dataset by IOGP must be acknowledged...'
See the URL for detailed information