Here is the Bitcoin/Cryptocurrency MoDCore referral page.
Freebitco.in
FreeBitco.in – https://freebitco.in/?r=4410549
Roll once an hour to claim free bitcoins, also has a higher and lower game, along with a points scheme to double/triple the hourly claim
https://www.nicehash.com/miner/1MFnVncJ22xHy32KSPw6Agj4uG74Bcbxmr