Proof of Authentication
1) Your Bitcointalk username: bangghali_part2
2) Forum Rank: Member
3) Email address you used to register for your Sigma account: nyoach@gmail.com
4) Which campaign(s) you are participating in:
    -Sigma account Sign-up Referral Campaign
    -Facebook and Twitter Campaign
    -Written/Video Content Creation Campaign
    -Link your cryptocurrency exchange accounts on Sigma