Week 4 :
Link to the content : https://steemit.com/ico/@cryptocat15/sero-or-new-generation-of-anonymous-cryptocurrency
                              https://steemit.com/ico/@cryptocat15/sero-the-first-fully-anonymous-blockchain
                              https://steemit.com/ico/@cryptocat15/sero-creating-dapps-blockchain-applications
                              https://steemit.com/ico/@cryptocat15/sero-new-market-for-apps-and-programs