// TODO replace with two functions:
// IsContractActive(contractHash), which checks if the contract is in the ACS on disk or in the contractpool;
// bool IsContractGeneratedTransactionValid(dbtx, contracthash, ptx), which raises an exception if called with a missing contract
//public static bool IsContractGeneratedTransactionValid(TransactionContext dbTx, TransactionValidation.PointedTransaction ptx, byte[] contractHash)
//{
// var chainTip = new ChainTip().Context(dbTx).Value;
// var tipBlockHeader = chainTip == null ? null : new BlockStore().GetBlock(dbTx, chainTip).Value.header;
// return xValid(ptx, contractHash, utxos, tipBlockHeader);
//}
public void InitBlockTimestamps(TransactionContext dbTx)
{
if (Tip != null)
{
var timestamps = new List <long>();
var itr = Tip.Value;
while (itr != null && timestamps.Count < BlockTimestamps.SIZE)
{
timestamps.Add(itr.header.timestamp);
if (itr.header.parent.Length == 0)
{
break;
}
var bk = BlockStore.GetBlock(dbTx, itr.header.parent);
System.Diagnostics.Debug.Assert(bk != null);
itr = bk.Value;
}
Timestamps.Init(timestamps.ToArray());
}
}