Dif going up today, we're #2 on Coinwarz.
Coin Difficulty Coin reward/day Exchange rate BTC Exchange rate USD Revenue/day Days to create 1 BTC
NobleCoin 8.87000000 11339.666072 0.00000061 ? 0.0003662379 $4.15 144.57
Numer 2? We are even behind Litecoin, the exchange rate is still downwards without explanation.

It's without explanation in the sense that there doesn't seem to be a clear reason for this dip. But it looks like general market health. When over 75% of markets are declining, and all of the big markets are declining it's bound to create lots of downwards pressure. Unfortunately, NOBLE is not immune to this despite all of the good news surrounding it.
True, I have been wondering if that was the cazy but to be honoust was too lazy to check all other markets to see if it was true. It seems you should just mine a 'shitcoin' market where the exchange rate is 1 or 2 satoshi, those can't crash. :p But there you have the risk of the market disappearing.
If you think about it, the conversion rate to BTC shouldn't change if the BTC exchange rate to USD is already crashing. The latter already takes all other coins value down with it, so why the double crash?