You can try with
http://yacexplorer.tk ,
http://yacexplorer.tk/chain/Yacoin/q/totalbc but is currently not up to date.
I think yacoin is pretty much dead..
Such a helpful answer.
Don't take me for an altcoin fanboy but YAC p2pool hashrate ATM is 14.1 MH, this is without taking other pools into account, so no YAC it's not dead at all.
And also YAC is the only altcoin that kinda holds it's value in exchange after some massive dumps. Can't say the same from any other recent alt coin.
YAC could be worth nothing in a month or a day, but at least you could bother taking a look at the facts.