These links are generated from the wishlist of amias They open bandcamp set for you to buy them for amias , if the release has non digital options you might have to click the 'Send gift' link but that will be prefilled for the person whos wishlist this is You can add a personal message then click Continue to pay No data is stored on this server, its just fetching the bandcamp wishlist page for a given user and redirecting you to the right places