cannabutter shelf life in freezer?

I make cannabutter every harvest, and this time made way more then usual and know I'm going to have to store it in the freezer for while. I away freeze all my cannabutter and take out huge chunks as needed put them in fridge.
How long could I store in the freezer you guys think? Longest I've stored in freezer was like 8 month

Seems like indefinitely : https://uk.answers.yahoo.com/question/index?qid=20120606045728AA2Pgj4

I freeze mine too, and I really hate butter, but its best like most butter use in 3 months, is best then it gets a rotten taste, that I like .....lol