SCORMCloud provides a "Context" variable called "registration", but it's not the SCORMCloud Registration GUID. It's a XAPI registration ID that we can derive from the SCORMCloud API, that lets us fetch all the associated XAPI statements.
Where does it come from?
SCORMCloud includes it in their registration detail service
Can I find it Bright?
Oh yes, you can find it in the Registration Explorer.
Why is it useful?
Well if you have your xAPI statements, you can filter them by this field and get the statements just for a single SCORMCloud registration.