Proof of authentication

Campaign: Article Campaign
Bitcointalk username: Fvafhae_
ETH: 0x134c7426338289F56DF6CcF7E3bc6738c6eF7aD0
LINKS:
1. https://steemit.com/prontapay/@fvafhae/prontapay-invoice-solutions-for-the-blockchain-era
2. http://fvafhae.blogspot.com/2018/06/prontapay-invoice-solutions-for.html