Is there any way to know the amount of bitcoin wagered on PrimeDice in last X hour (e.g. 24 hour), where the minimum size of bet was Y BTC (e.g. 0.0005 BTC)?
No idea if this is what you are asking for but if you use a desktop there is a
Won last 24 hours
-
1206.80 BTC
Displayed right above the betting platform
No that is the amount won and not the amount wagered.