/// <summary>
/// Creates a coinbase transaction and adds it the block.
/// </summary>
/// <returns>The created coinbase transaction.</returns>
/// <remarks>
/// Since coinbase transaction must be the first transaction in a block,
/// this method will throw an exception if the block already contains more than 0 transactions.
/// </remarks>
public Transaction AddCoinbaseTx(string address, long feeInNekoshi)
{
if (Transactions.Count > 0)
{
throw new System.InvalidOperationException("Coinbase must be the first transaction.");
}
long reward = Config.CalculateRewardInNekoshi(Index);
var txIn = new TxIn
{
TxId = HexUtils.HexFromInt(Index),
TxOutIndex = 0,
Signature = "",
};
var txOut = new TxOut
{
AmountInNekoshi = reward + feeInNekoshi,
Address = address,
};
var tx = new Transaction();
tx.Inputs.Add(txIn);
tx.Outputs.Add(txOut);
tx.Id = tx.GetId();
Transactions.Add(tx);
return(tx);
}
/// <summary>
/// Returns true if the given TxI is a valid coinbase TxI of the given block.
/// </summary>
public static bool IsValidCoinbaseTxIn(Block block, TxIn txIn)
{
return(txIn.TxId == HexUtils.HexFromInt(block.Index) &&
txIn.TxOutIndex == 0 &&
txIn.Signature == "");
}
