// Check whether the coinstake timestamp meets protocol
public static bool CheckCoinStakeTimestamp(int nHeight, long nTimeBlock, long nTimeTx)
{
if (StakeValidator.IsProtocolV2(nHeight))
{
return((nTimeBlock == nTimeTx) && ((nTimeTx & STAKE_TIMESTAMP_MASK) == 0));
}
else
{
return(nTimeBlock == nTimeTx);
}
}
public override void ContextualCheckBlockHeader(ContextInformation context)
{
base.ContextualCheckBlockHeader(context);
var chainedBlock = context.BlockResult.ChainedBlock;
if (!StakeValidator.IsProtocolV3((int)chainedBlock.Header.Time))
{
if (chainedBlock.Header.Version > BlockHeader.CURRENT_VERSION)
{
ConsensusErrors.BadVersion.Throw();
}
}
if (StakeValidator.IsProtocolV2(chainedBlock.Height) && chainedBlock.Header.Version < 7)
{
ConsensusErrors.BadVersion.Throw();
}
else if (!StakeValidator.IsProtocolV2(chainedBlock.Height) && chainedBlock.Header.Version > 6)
{
ConsensusErrors.BadVersion.Throw();
}
if (context.Stake.BlockStake.IsProofOfWork() && chainedBlock.Height > this.ConsensusParams.LastPOWBlock)
{
ConsensusErrors.ProofOfWorkTooHeigh.Throw();
}
// Check coinbase timestamp
if (chainedBlock.Header.Time > FutureDrift(context.BlockResult.Block.Transactions[0].Time, chainedBlock.Height))
{
ConsensusErrors.TimeTooNew.Throw();
}
// Check coinstake timestamp
if (context.Stake.BlockStake.IsProofOfStake() &&
!PosConsensusValidator.CheckCoinStakeTimestamp(chainedBlock.Height, chainedBlock.Header.Time, context.BlockResult.Block.Transactions[1].Time))
{
ConsensusErrors.StakeTimeViolation.Throw();
}
// Check timestamp against prev
if (chainedBlock.Header.Time <= StakeValidator.GetPastTimeLimit(chainedBlock.Previous) ||
FutureDrift(chainedBlock.Header.Time, chainedBlock.Height) < chainedBlock.Previous.Header.Time)
{
ConsensusErrors.BlockTimestampTooEarly.Throw();
}
}
private static long FutureDrift(long nTime, int nHeight)
{
return(StakeValidator.IsProtocolV2(nHeight) ? FutureDriftV2(nTime) : FutureDriftV1(nTime));
}