I would like to use some images for wallpaper of a famous Brazilian. He has been deceased for over 70 years, he and his “works” are already under “public domain”. According to the Brazilian website http://www.dominiopublico.gov.br and wikipedia, such images are available for public use. I know that I would have to submit a license agreement as described here https://developer.samsung.com/galaxy-store/ip-infringement.html. However, on the public domain government website there is no such contract, only the content is made available. Could I use such images to sell wallpapers or make them available for free? And in copyright (ip-infringement) just put the link to the available content?
According to Brazilian law, in article 33, the contents that I would like to use, are already in the public domain, therefore, I could already use and edit them. LAW: http://www.planalto.gov.br/ccivil_03/leis/l9610.htm
As a contract, could I put this link?