#Proof of Authentication
Content Campaign
Bitcointalk: sarah maryyny
Bitcointalk Profile: https://bitcointalk.org/index.php?action=profile;u=1608822
Content URL:
https://steemit.com/stealthcrypto/@oleg17/stealthcrypto-mobilnyi-tekhnologii-s-ispolzovaniem-blokcheina
https://golos.io/stealthcrypto/@oleg17/stealthcrypto-mobilnyi-tekhnologii-s-ispolzovaniem-blokcheina
https://medium.com/@CrptWorld/stealthcrypto-мобильный-технологии-с-использованием-блокчейна-cdad156e4c52