int64 static GetBlockValue(int nHeight, int64 nFees)
{
    int64 nSubsidy = 512 * COIN;
    int halvingInterval = 43200;
    int halvingGap = 86400; // Num of blocks between 1st and second halving

    while (nHeight > halvingInterval) {
        nSubsidy /= 2;
        halvingInterval += halvingGap;
        halvingGap += 43200; // Next halving height gap is 43,200 blocks more than the last
    }

    return nSubsidy + nFees;
}