https://developer.valvesoftware.com/wiki/Valve_Time
The problem with crypto in general is its distributed so I see one exchange on bitcoinwisdom for BLK with volume from a USA exchange but then Im missing the picture elsewhere. The market itself generally equalises prices in high volume by arbitrage but volume picture who knows. BTC rising so strongly is putting alot of pressure on alt coins. Its like a plane reaching upper atmosphere, up rather then down is surely good but the air is thin up here. Does this mean BTC gains from being so large, the influx of capital requires that depth of volume hence a bias to BTC pricing. ie. big money is increasingly involved in crypto leaving a large bias on entry, not sure
Try -rescan in options on wallet startup if balance appears wrong