Iframe Checkout for hide real site from payment processor

Hi I m searching a developer that can hide the real site from the payment processor like Paypal and Stripe. Basically I know that it s possible have for example 2 site the white with normal product and the black with replica branded product. On the white site I connect the payment proccessor and with api key and coding when people make a purchase and fill the data of the black site checkout in the meantime they automatically fill the white checkout like a mirror checkout and so for the payment processor the sell come from the white site. The domain remain different from black and white Idon't need a redirect so when people add to cart goes on the white checkout. I can show also an example in private.