People
Of
Color obviously! Pay reparations wite boi!!!
But seriously, everyone above refers to Proof-of-Capacity, but the emboldened part of OP's post suggest that's not what's he's asking for:
... when all of the BTC and Alt are green and they say 99% are just PoC?
There's another PoC term related to trading and TA: "Point of Control"
https://marketdelta.com/how-to-plot-and-trade-naked-pocs-point-of-control/@OP - it's always good to quote the context in which you've seen that term used, to avoid confusion.