private bool VerifyBlock(BlockDetailedModel model)
{
foreach (var mod in model.Transactions)
{
mod.State = "Unverified";
}
var transactionHash = MerkleTree <TransactionModel> .Compute(model.Transactions.OrderBy(x => x.Id).ToList());
var obj = new MiningBlock
{
Hash = transactionHash.TrimEnd('=') + model.PreviousHash.TrimEnd('='),
PreviousBlockHash = model.PreviousHash.TrimEnd('='),
Nonce = model.Nonce,
Miner = model.Miner
};
using (SHA256Managed sha = new SHA256Managed())
{
using (MemoryStream ms = new MemoryStream())
{
ms.Position = 0;
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(ms, obj);
return(model.Hash == Convert.ToBase64String(sha.ComputeHash(ms.ToArray())));
}
}
}
private void _txTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
if (_httpClient.CheckTransactionsAmount())
{
var transactions = _httpClient.GetUnverifiedTransactions();
var block = _httpClient.GetLastBlock()?.Hash ?? "0000000000";
Block = new BlockDetailedModel
{
Transactions = transactions,
PreviousHash = block
};
_txTimer.Stop();
Task.Factory.StartNew(() => Run(), _miningTokenSource.Token);
}
}
