#JOIN & #Proof of authentication
"Name" of Bounty Campaign (Blogs)
Bitcointalk username: dewi08
Bitcointalk profile link: https://bitcointalk.org/index.php?action=profile;u=894088
Telegram username: @dhewio8
Article Link: https://steemit.com/crypto/@aisyah-rahayu/cerlos-transforming-the-trillion-dollar-building-materials-industry-on-blockchain