Disappearing loop cast on?

#1

i’m trying to start a hat that starts from the top down and you are supposed to use the “disappearing loop cast on”. the pattern mentions the techknitting blog as a resource to learn this cast-on method but i do better with videos than pictures. does anyone know of any videos that demonstrate this technique?

#2

I think it might also be what’s called a provisional cast on and there’s a video for that here, as well as several on YouTube.