cryptosphere lol.
guess you mean alternative cryptocurrencies.
no one in cryptography has actually researched cryptonight algorithm.
it might be ok or not, but nobody knows, because nobody solid or respected in the 'cryptoshere' has bothered to look into it.
there's been lots of research into sha256 and so far so good.
as for fungibility and anonymity, tell me how many bitcoins do I own? there's no evidence for this.
and would Overstock accept a bitcoin if I sent it to them any less than the next guy's coin?
they aren't blacklisted yet, people can fudge their ip addresses, fluffypony is nice. but dim.
I believe in BTC and hodl it, but thereīs use cases... You know, coinbase for example, has lists of white BTCs , premium (recently minted) and blacklisted BTCs. And that trend will only intensify as time happens and we approach massive use scales.
I donīt know how much BTCs do you hold, but thereīre exchanges and three letter agencies that probably do. If they were interested they could link how much BTC I own too, but they donīt have the slightest idea of how much moneros do I hodl, if any.
Even if the exchange itself tell them how much did I withdrew is imposible for them to know if I keep hodling that or I have smoked it in hookers and pepsi cola.
Regarding cryptonight, thereīs a plus 2 billion bounty for the cracker of the cryptography.