// miner's coin base reward based on nBits
int64 GetProofOfWorkReward(int nHeight, int64 nFees, uint256 prevHash)
{
    int64 nSubsidy = 11 * COIN;

if(nHeight < 300)  
    {
        nSubsidy = 1 * COIN;
    }
else if(nHeight < 35000)  
    {
        nSubsidy = 33 * COIN;
    }
    else if(nHeight < 70000)  
    {
        nSubsidy = 22 * COIN;
    }

    return nSubsidy + nFees;
}