#Proof-of-authentication:
   •   Bitcointalk username: MasterDropov
   •   Telegram username: @CrazyClock3
   •   Twitter username: @CrazyClock105
   •   Link to your tweet about Smart City Eco: https://twitter.com/CrazyClock105/status/1005570287226753024
   •   Facebook: https://www.facebook.com/CrazyClock105
   •   Link to your Facebook post about Smart City Eco: https://www.facebook.com/CrazyClock105/posts/811927608998102