What is GoCoin & how does it work?

Could you elaborate on GoCoin and its functionality? As a cryptocurrency enthusiast, I'm curious to know how this platform operates. Specifically, I'd like to understand what GoCoin is, its main features, and how it enables transactions involving digital currencies. Does it act as a payment gateway, a wallet, or both? What kind of merchants use it, and how do users benefit from its services? I'm also interested in its security measures and if it supports a wide range of cryptocurrencies. Clarifying these aspects would greatly assist me in assessing the potential of GoCoin in the broader crypto ecosystem.