Coinbase is not a sketchy exchange by any means, and while I'm cautious about Bitfinex their volume is quite believable given they are the default choice for no

Coinbase is not a sketchy exchange by any means, and while I'm cautious about Bitfinex their volume is quite believable given they are the default choice for non US persons. That's also why I quoted USD, if you include crypto-crypto volume and some of the zero fee exchanges it definitely becomes nonsense.