#Proof-of-authentication:
    •   Bitcointalk username: sebas_ram
    •   Telegram username: @altodude
    •   Joined campaigns: Blog

Steemit:https://steemit.com/spanish/@sebasram/cargocoin-plataforma-naviera-con-contratos-inteligentes
https://steemit.com/english/@sebasram/cargocoin-shipping-platform-with-intelligent-contracts