Proof of Authentication
Bitcointalk username: vuongthuy94
Bitcointalk profile URL:
https://bitcointalk.org/index.php?action=profile;u=2013116Your telegram username:@nguyennhahn
Which campaign/s you joined: facebook, Twitter, Linkedin, youtube
Ethereum address: 0xd78bD85e5546302BBe8536DbDdE68F61EAadD5E9