| http://www.w3.org/ns/prov#value | - January 15, 2014 admin Product Mail Stamper certifies the sending of emails: date, time, recipients and content, especially useful to protect your authorship when sending the first versions of a work (models, designs, novels, TV Formats, photographs, etc???) avoiding that the one who receives it claims the idea as of his or her own by saying it isn???t true that a email had been sent before (more
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