Does prettylink store website url or prettylink as referal link?

Does anyone know how prettylink is tracked? Lets say i have a landning page and a button where my prettylink is connected to a affiliate platform. Do they see my landingpage referal link? Or just the prettylink as referal?

Same question involves if there is another website that that is not mine but where its an prettylink to my affiliate platform. Do they see the other website as referal link? Or just my prettylink as referal link?