If you are looking to use Edius, it is recommended to use official channels:
EDIUS 8 requires an active serial number for both trial and full versions. Installing Edius 11 part 1: Download And Setup Edius 8 Serial Number List
Serial numbers found online are frequently blacklisted by Grass Valley, meaning they will not activate the software or will cease working after a short time. If you are looking to use Edius, it
If Edius 8 is currently installed and working on your machine, you can often find the serial number within the program itself. Edius 8 Serial Number List