#Proof of authentication

Join to facebook & linkedin Campaign
Facebook URL: https://www.facebook.com/alexknyazev
Linkedin URL: https://www.linkedin.com/in/bitcoindevelopment/
Bitcointalk username: Alexa777
Telegram username: @grammtell
ETH: 0xa5c91Be15EeF6906eD76F91E67eC2b453288ef56