public PossibleStake(ulong units, CheckStakeResult result) { this.ID = result.Id; this.Uxto = result.Id.Substring(2, 64); this.Vout = int.Parse(result.Id.Substring(67)); this.Address = result.OfAddress; this.StakeDate = ConvertFromUnixTimestamp(result.FutureTimestamp); this.MaxDifficulty = result.minimumDifficulty; this.StakeModifier = result.StakeModifier; this.StakeModifierHex = result.StakeModifierHex; this.BlockFromTime = result.BlockFromTime; this.PrevTxOffset = result.PrevTxOffset; this.PrevTxTime = result.PrevTxTime; this.PrevTxOutIndex = result.PrevTxOutIndex; this.FutureTimestamp = result.FutureTimestamp; this.NewValueAtFutureTimestamp = CalcNewUnits(result.BlockFromTime, result.FutureTimestamp, units); }
public static CheckStakeResult CheckStakeKernelHash(MintTemplate template, UInt32 txTime, UInt64 stakeModifier) { var retobj = new CheckStakeResult { Id = template.Id, OfAddress = template.OfAddress, txTime = txTime }; if (txTime < template.PrevTxTime) { // Transaction timestamp violation return(retobj); } if (template.BlockFromTime + PeercoinConstants.StakeMinAge > txTime) { // Min age requirement return(retobj); } var bnTargetPerCoinDay = Mint.CompactToBig(template.Bits.Value); long nTimeWeight = txTime - template.PrevTxTime; if (nTimeWeight > PeercoinConstants.StakeMaxAge) { nTimeWeight = PeercoinConstants.StakeMaxAge; } long timeReduction = PeercoinConstants.StakeMinAge; nTimeWeight -= timeReduction; var t1 = new BigInteger(24 * 60 * 60); var t2 = new BigInteger(PeercoinConstants.Coin); var t3 = new BigInteger(template.PrevTxOutValue); var t4 = new BigInteger(nTimeWeight); BigInteger bnCoinDayWeight = (((t3 * t4) / t2)) / t1; BigInteger targetInt = bnCoinDayWeight * (bnTargetPerCoinDay); //byte[] array = new byte[28]; var buffer = new byte[28]; var bufferindex = 0; byte[] arrStakemodifier = BitConverter.GetBytes(stakeModifier); //put stakemodifier in buffer for (var i = 0; i < 8; i++) { buffer[bufferindex] = arrStakemodifier[i]; bufferindex++; } //put other data in buffer new List <UInt32> { (UInt32)template.BlockFromTime, (UInt32)template.PrevTxOffset, (UInt32)template.PrevTxTime, (UInt32)template.PrevTxOutIndex, (UInt32)txTime } .ForEach(num => { var dn = num; for (var i = 0; i < 4; i++) { buffer[bufferindex] = (byte)(dn & 0xff); dn >>= 8; bufferindex++; } }); //no reverse so keep it in little endian var hashProofOfStake = Mint.DoubleSha256(buffer.ToList()).ToArray(); //keep it in little-endian .Reverse().ToArray(); //add zero to last in array to make it unsigned: // https://docs.microsoft.com/en-us/dotnet/api/system.numerics.biginteger.-ctor?view=netframework-4.5.2#System_Numerics_BigInteger__ctor_System_Byte___ if ((hashProofOfStake[hashProofOfStake.Length - 1] & 0x80) > 0) { byte[] temp = new byte[hashProofOfStake.Length]; Array.Copy(hashProofOfStake, temp, hashProofOfStake.Length); hashProofOfStake = new byte[temp.Length + 1]; Array.Copy(temp, hashProofOfStake, temp.Length); } var hashProofOfStakeInt = new BigInteger(hashProofOfStake); if (hashProofOfStakeInt > targetInt) { return(retobj); } //yeah, below target! retobj.minTarget = (hashProofOfStakeInt / bnCoinDayWeight) - new BigInteger(1); retobj.success = true; retobj.hash = hashProofOfStake; retobj.Id = template.Id; var comp = Mint.IncCompact( Mint.BigToCompact(retobj.minTarget) ); retobj.minimumDifficulty = Mint.CompactToDiff(comp); return(retobj); }