#Proof of authentication

article/blog compaign

Link to article:
1. https://steemit.com/humancoin/@arturkantler/humancoin-project-charity-on-the-blockchain
2. https://www.linkedin.com/pulse/humancoin-блaгoтвopитeльнocть-в-кpиптo-миpe-artur-kantler/?published=t
3. https://www.facebook.com/artur.kantler.5/posts/246429496034618