Care to share what's the purpose of your blockchain project? To store PDF files for what? For sharing or safe keeping? Don't get me wrong, we encourage people to really take advantage of this technology, but we have file sharing websites around which fits your purposed, IMHO.
Thank you for commenting. I understand your point of view, however, I believe that if you want to take advantage completely you need to know it very well. And to know it very well you have to practice with it. Let's suppose this is a kind of practice in order to know very well the technology and to use it as it should be used. 