public static Transaction CoinBaseGenesisTx(string to, string data)
{
if (data == "")
{
data = "Coins to " + to;
}
var txIn = new TxInput()
{
Id = new byte[] { }, // no referencing any output
Out = -1, // no referencing any output
Signature = null,
PubKey = ByteHelper.GetBytesFromString(data)
};
var txOut = TxOutput.NewTxOutput(100, to);
var tx = new Transaction()
{
Id = null,
Outputs = new List <TxOutput>()
{
txOut
},
Inputs = new List <TxInput>()
{
txIn
}
};
tx.Id = tx.CalculateHash();
return(tx);
}
//ver1
public static Transaction NewTransaction(string from, string to, int amount, UTXOSet set)
{
var inputs = new List <TxInput>();
var outputs = new List <TxOutput>();
var walletBank = new WalletBank();
var wallet = walletBank.FindWallet(from);
var pubKeyHash = wallet.PublicKeyHash;
var spendableOutputs = set.FindSpendableOutputs(pubKeyHash, amount);
var account = spendableOutputs.Item2;
var validOutputs = spendableOutputs.Item1;
if (account < amount)
{
Console.WriteLine("Insufficient funds");
return(null);
}
else
{
foreach (var output in validOutputs.Keys)
{
var txId = (output);
if (validOutputs.ContainsKey(txId))
{
foreach (var @out in validOutputs[txId])
{
var input = new TxInput()
{
Id = HexadecimalEncoding.FromHexStringToByte(txId), Out = @out, Signature = null, PubKey = wallet.PublicKey
};
inputs.Add(input);
}
}
}
outputs.Add(TxOutput.NewTxOutput(amount, to));
if (account > amount)
{
outputs.Add(TxOutput.NewTxOutput(account - amount, from));
}
}
var tx = new Transaction()
{
Id = null,
Inputs = inputs,
Outputs = outputs,
TimeStamp = DateTime.Now
};
tx.Id = tx.CalculateHash();
set.Chain.SignTransaction(tx, wallet.PrivateKey);
return(tx);
}