The last time I saw that number - $300k/BTC - was in 2013. There was a European silver salesman on here who calculated it based on what you'd get if you tried to fit the "market cap" (to use the term loosely) of gold into BTC.

At the time, the exchange rate's all time high was $260/BTC. It was easy, then, to dismiss the idea - a 1000x appreciation - as the sort of fever dream that bulls tend to get amidst the euphoria of bubble conditions.

It's a surreal experience to see numbers like that again today, when that "1000x appreciation" is more like "12x appreciation". All of a sudden it's a bit harder to dismiss.