What do you mean by "100% Granted Backlinks"? I am not clear about your query..... Would be better if you can elaborate on it further.
If you want to get 100% free backlinks than you can do one thing that do good article submission on high pr article directory and you can buy the links from good sites.
I think forum posting is the beat way to create high PR back links Articles are also good but you for it you have to need quality contents so i think forums are good.
If you looking for totally free way to get you back links, i think you should try out social networking and forum posting, but in-order to be free you should done this by your self.
Easiest way to get backlinks is through commenting on other blogs, ask other webmasters for link exchange. Other methods are: forum posting, article submissions, web 2.0 websites, creating feeds (maybe?) yahoo answers etc.