MrPortman,
I don't mean to insult you, but I'm having a hard time understanding your English.
As a result, I don't understand your explanation of the NEMCredits.
I must be having the same problem as it makes no sense to me whatsoever

What exactly isn't clear?
I guess the whole context isn't clear.
From what I understand you are planning to issue an asset that behaves like a bond with weekly payouts that decrease the value until the value is zero...
But not sure however if I understood this correct
