All efforts to connect with this Exchange has proved abortive. GGBTC also known as Global Gravitational Bitcoin is a digital asset trading platform which seemed to have been launched in 2019, it was in that same year it had its fund raiser exercise but never disclosed how much was raised. The exchange is presently inaccessible so we can say for sure that this exchange has a trading volume of $0. I have checked out the exchange on Twitter, the exchange had its last post in 2019. Without any further ado, we can conclude that this exchange is no longer functional, users be careful. Even the Telegram has been taken over by Asian Spammers who are posting different kinds of links. In your best interest, STAY OFF!!!