Q posts prior to Nov 2017 were 4chan

In October 2017, a 4chan user that referred to himself as "Q" The next month, citing security concerns, Q moved to 8chan and only posted there from then on.

-EXACTLY THIS

My fellow Americans, the Storm is upon us…….

https://twitter.com/Patriot_Dale/status/1556788046753718272?s=20&t=208YzMaaPd-XRDVWej8kpg