#Proof of authentication
Bitcointalk username: duyhenry
Bitcointalk profile link: https://bitcointalk.org/index.php?action=profile;u=1348563
Telegram: @duyhenry
Twitter: @duyhenryerr
Content URL : https://steemit.com/@duyhenry/
Reddit: https://www.reddit.com/user/DUYHENRY