static void Main(string[] args)
{
Wallet walletA = new Wallet();
Wallet walletB = new Wallet();
Wallet coinbase = new Wallet();
Transaction genesisTransaction = new Transaction(coinbase.PublicKey, walletA.PublicKey, 100, null);
genesisTransaction.GenerateSignature(coinbase.PrivateKey);
genesisTransaction.TransactionId = "0";
genesisTransaction.Outputs.Add(new TransactionOutput(genesisTransaction.RecipientPublicKey, genesisTransaction.Value, genesisTransaction.TransactionId));
BlockChain.AddUnspentTransactionOutput(genesisTransaction.Outputs[0].Id, genesisTransaction.Outputs[0]);
Console.WriteLine("Creating and Mining Genesis block - Transferring 100 coins from coinbase to Wallet A");
BlockChain.AddBlockTransaction(genesisTransaction);
Console.WriteLine($"Wallet A Balance: {walletA.GetBalance()}");
Console.WriteLine("Attempting to transfer 30 coins from Wallet A to Wallet B");
var transaction = walletA.SendFunds(walletB.PublicKey, 30);
if (transaction == null)
{
Console.WriteLine("Wallet A does not have funds to transfer");
}
else
{
BlockChain.AddBlockTransaction(transaction);
Console.WriteLine($"Wallet A Balance: {walletA.GetBalance()}");
Console.WriteLine($"Wallet B Balance: {walletB.GetBalance()}");
}
Console.WriteLine("Attempting to transfer 10 coins from Wallet B to Wallet A");
var transaction1 = walletB.SendFunds(walletA.PublicKey, 10);
if (transaction1 == null)
{
Console.WriteLine("Wallet B does not have funds to transfer");
}
else
{
BlockChain.AddBlockTransaction(transaction1);
Console.WriteLine($"Wallet A Balance: {walletA.GetBalance()}");
Console.WriteLine($"Wallet B Balance: {walletB.GetBalance()}");
}
Console.WriteLine("Check if Chain is valid");
Console.WriteLine(BlockChain.IsChainValid());
Console.WriteLine("BlockChain Display");
Console.WriteLine(BlockChain.Display());
}
public BlockChainMessageObject ProcessTransaction()
{
BlockChainMessageObject message = new BlockChainMessageObject();
if (!VerifySignature())
{
message.Message = "#Transaction signature failed to verify";
message.IsValid = false;
return(message);
}
foreach (var transactionInput in Inputs)
{
transactionInput.UTXO = BlockChain.GetUnspentTransactionOutputById(transactionInput.TransactionOutputId);
}
var totalInputValue = GetInputsValue();
if (totalInputValue < BlockChain.MinimumTransaction)
{
message.Message = $"#Transaction Input is too small {totalInputValue}";
message.IsValid = false;
return(message);
}
double remainingBalance = totalInputValue - Value;
TransactionId = CalculateHash();
Outputs.Add(new TransactionOutput(RecipientPublicKey, Value, TransactionId));
Outputs.Add(new TransactionOutput(SenderPublicKey, remainingBalance, TransactionId));
foreach (var transactionOutput in Outputs)
{
BlockChain.AddUnspentTransactionOutput(transactionOutput.Id, transactionOutput);
}
foreach (var transactionInput in Inputs)
{
if (transactionInput.UTXO == null)
{
continue;
}
BlockChain.RemoveUnspentTransactionOutput(transactionInput.UTXO.Id);
}
message.Message = "Transaction Processed!";
message.IsValid = true;
return(message);
}
