Gurunath Meyyappan should have used these websites instead of relying on Dara Singh. 
The maximum amount of bet one can make on that game was some 15btc... and I assume 15btc may the fee that was charged on the transactions that those guys were gambling..BTW he was not Dara Singh , He was Dara Singh's stupid son "Bindu" Dara Singh.. Dara Singh was a noble man , atleast for the amount of time I saw him on onscreen.