/// <param name="nBits">Packed difficulty representation.</param>
/// <param name="nFees">Amount of fees.</param>
/// <returns>Reward value.</returns>
- public static ulong GetProofOfWorkReward(uint nBits, ulong nFees)
+ public static long GetProofOfWorkReward(uint nBits, long nFees)
{
// NovaCoin: subsidy is cut in half every 64x multiply of PoW difficulty
// A reasonably continuous curve is used to avoid shock to market
bnLowerBound = bnMidValue;
}
- ulong nSubsidy = bnUpperBound;
+ long nSubsidy = bnUpperBound;
nSubsidy = (nSubsidy / CTransaction.nCent) * CTransaction.nCent;
return Math.Min(nSubsidy, NetInfo.nMaxMintProofOfWork) + nFees;
}
- public static ulong GetProofOfStakeReward(ulong nCoinAge, uint nBits, uint nTime)
+ public static long GetProofOfStakeReward(long nCoinAge, uint nBits, uint nTime)
{
- ulong nRewardCoinYear, nSubsidy, nSubsidyLimit = 10 * CTransaction.nCoin;
+ // Second stage of emission process is mostly PoS-based.
- if (nTime > NetInfo.nDynamicStakeRewardTime)
- {
- // Stage 2 of emission process is PoS-based. It will be active on mainNet since 20 Jun 2013.
+ long nRewardCoinYear, nSubsidy, nSubsidyLimit = 10 * CTransaction.nCoin;
+ // Base stake mint rate, 100% year interest
+ BigNum bnRewardCoinYearLimit = NetInfo.nMaxMintProofOfStake;
- BigNum bnRewardCoinYearLimit = NetInfo.nMaxMintProofOfStake; // Base stake mint rate, 100% year interest
+ uint256 nTarget = 0;
+ nTarget.Compact = nBits;
- uint256 nTarget = 0;
- nTarget.Compact = nBits;
+ BigNum bnTarget = nTarget;
+ BigNum bnTargetLimit = NetInfo.GetProofOfStakeLimit(0, nTime);
- BigNum bnTarget = nTarget;
- BigNum bnTargetLimit = NetInfo.GetProofOfStakeLimit(0, nTime);
+ // A reasonably continuous curve is used to avoid shock to market
- // NovaCoin: A reasonably continuous curve is used to avoid shock to market
+ BigNum bnLowerBound = CTransaction.nCent, // Lower interest bound is 1% per year
+ bnUpperBound = bnRewardCoinYearLimit, // Upper interest bound is 100% per year
+ bnMidPart, bnRewardPart;
- BigNum bnLowerBound = CTransaction.nCent, // Lower interest bound is 1% per year
- bnUpperBound = bnRewardCoinYearLimit, // Upper interest bound is 100% per year
- bnMidPart, bnRewardPart;
+ while (bnLowerBound + CTransaction.nCent <= bnUpperBound)
+ {
+ BigNum bnMidValue = (bnLowerBound + bnUpperBound) / 2;
- while (bnLowerBound + CTransaction.nCent <= bnUpperBound)
- {
- BigNum bnMidValue = (bnLowerBound + bnUpperBound) / 2;
- if (nTime < NetInfo.nStakeCurveSwitchTime)
- {
- //
- // Until 20 Oct 2013: reward for coin-year is cut in half every 64x multiply of PoS difficulty
- //
- // (nRewardCoinYearLimit / nRewardCoinYear) ** 6 == bnProofOfStakeLimit / bnTarget
- //
- // Human readable form: nRewardCoinYear = 1 / (posdiff ^ 1/6)
- //
-
- bnMidPart = bnMidValue * bnMidValue * bnMidValue * bnMidValue * bnMidValue * bnMidValue;
- bnRewardPart = bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit;
- }
- else
- {
- //
- // Since 20 Oct 2013: reward for coin-year is cut in half every 8x multiply of PoS difficulty
- //
- // (nRewardCoinYearLimit / nRewardCoinYear) ** 3 == bnProofOfStakeLimit / bnTarget
- //
- // Human readable form: nRewardCoinYear = 1 / (posdiff ^ 1/3)
- //
-
- bnMidPart = bnMidValue * bnMidValue * bnMidValue;
- bnRewardPart = bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit;
- }
+ // Reward for coin-year is cut in half every 8x multiply of PoS difficulty
+ //
+ // (nRewardCoinYearLimit / nRewardCoinYear) ** 3 == bnProofOfStakeLimit / bnTarget
+ //
+ // Human readable form: nRewardCoinYear = 1 / (posdiff ^ 1/3)
- if (bnMidPart * bnTargetLimit > bnRewardPart * bnTarget)
- bnUpperBound = bnMidValue;
- else
- bnLowerBound = bnMidValue;
- }
+ bnMidPart = bnMidValue * bnMidValue * bnMidValue;
+ bnRewardPart = bnRewardCoinYearLimit * bnRewardCoinYearLimit * bnRewardCoinYearLimit;
- nRewardCoinYear = bnUpperBound;
- nRewardCoinYear = Math.Min((nRewardCoinYear / CTransaction.nCent) * CTransaction.nCent, NetInfo.nMaxMintProofOfStake);
- }
- else
- {
- // Old creation amount per coin-year, 5% fixed stake mint rate
- nRewardCoinYear = 5 * CTransaction.nCent;
+ if (bnMidPart * bnTargetLimit > bnRewardPart * bnTarget)
+ {
+ bnUpperBound = bnMidValue;
+ }
+ else
+ {
+ bnLowerBound = bnMidValue;
+ }
}
- nSubsidy = nCoinAge * nRewardCoinYear * 33 / (365 * 33 + 8);
+ nRewardCoinYear = bnUpperBound;
+ nRewardCoinYear = Math.Min((nRewardCoinYear / CTransaction.nCent) * CTransaction.nCent, NetInfo.nMaxMintProofOfStake);
- // Set reasonable reward limit for large inputs since 20 Oct 2013
- //
- // This will stimulate large holders to use smaller inputs, that's good for the network protection
- if (NetInfo.nStakeCurveSwitchTime < nTime)
- {
- nSubsidy = Math.Min(nSubsidy, nSubsidyLimit);
- }
+ nSubsidy = nCoinAge * nRewardCoinYear * 33 / (365 * 33 + 8);
- return nSubsidy;
+ // Set reasonable reward limit for large inputs
+ // This will stimulate large holders to use smaller inputs, that's good
+ // for the network protection
+ return Math.Min(nSubsidy, nSubsidyLimit);
}
public Tuple<COutPoint, uint> ProofOfStake