ContextI have modified a lot a software that in under Affero GPL. I have contributed back what made sense, as it has a completely different direction. I plan to build a SaaS around it and charge money for its use. The code is public, with both copyright notices in the LICENSE file: mine and the originals.In our terms and conditions we say the product is licensed under Affero GPL. A service contract with our customers needs to be put in place.QuestionAfter reading half internet about GPL and the full text of the license five times, I still have questions:Do I need to mention in the service contract that the product is under AGPL license? Or in the terms and conditions is enough?Do I need to mention in the terms and conditions or in the service contract the original Copyright notices of some part of the code?Can I put in my landing page Copyright 2015 BLABLA? Or I am forced to add also the copyright of the original contributors?I'm getting in touch with a lawyer and I will put his answers here, but just in case someone have experience in this matter. 
Do I need to add the copyright notice of the original contributors in the SaaS service contract of a forked AGPL sofware?
licensing;gpl;software as a service