public StampPeer(Guid peerGuid)
{
PeerGuid = peerGuid;
_genesisBlock = new StampBlock(Guid.Empty, null, null, DateTime.Now);
Blocks = new Dictionary <string, StampBlock>()
{
{ _genesisBlock.BlockHash, _genesisBlock }
};
LatestBlock = _genesisBlock;
}
public void AddBlock(StampBlock block)
{
if (LatestBlock.BlockHash != block.PreviousHash)
{
throw new Exception("Invalid previous block hash");
}
var blockHash = block.BlockHash;
if (CalculateBlockHash(block) != blockHash)
{
throw new Exception("Invalid new block hash");
}
if (Blocks.ContainsKey(blockHash))
{
throw new Exception("Duplicate block in chain");
}
Blocks.Add(blockHash, block);
LatestBlock = block;
}
private String CalculateBlockHash(StampBlock block)
{
var data = String.Concat(block.BlockGuid.ToString(), block.PreviousHash, block.CreatedAt.ToUniversalTime(), block.UserCode, block.StampAt.ToUniversalTime(), block.Note);
return(CalculateHash(data));
}