public async Task SignAndCreateTransaction(TransactionDto transaction, string secretKey)
{
var tx = new BlockchainCore.Models.Transaction(transaction.FromAddress, transaction.ToAddress, transaction.Amount);
tx.SignTransaction(secretKey);
await Task.Factory.StartNew(() => _blockchain.AddTransactionToPool(tx));
}
static void Main(string[] args)
{
Console.WriteLine("MudraCoin!");
#region Blockchain integrity
//Uncomment below block to test basic blockchain integrity
/*
* var mudraCoin = new Blockchain();
*
* mudraCoin.addBlock(new Block(DateTime.UtcNow, new List<Transaction>() { new Transaction("Shivaji","Bajiprabhu",10) }));
* mudraCoin.addBlock(new Block(DateTime.UtcNow, new List<Transaction>() { new Transaction("Tanaji", "Dadaji", 10) }));
* mudraCoin.addBlock(new Block(DateTime.UtcNow, new List<Transaction>() { new Transaction("Shahaji", "Yesaji", 10) }));
* mudraCoin.addBlock(new Block(DateTime.UtcNow, new List<Transaction>() { new Transaction("Siddi", "Kanhoji", 10) }));
*
*
* Console.WriteLine(JsonSerializer.Serialize(mudraCoin.blockchain));
*
* Console.WriteLine("Is blockchain valid : " + mudraCoin.isBlockchainValid());
*
* Console.WriteLine("Tampering with blockchain (•̀ᴗ•́ )");
*
* mudraCoin.blockchain.ElementAt(2).PrevHash = "123";
*
* Console.WriteLine("is blockchain valid : " + mudraCoin.isBlockchainValid());
*
* Console.WriteLine(JsonSerializer.Serialize(mudraCoin.blockchain));
*/
#endregion
#region Mining rewad implementation
// Mining reward implementation
/*
* var mudraCoin = new Blockchain();
*
* mudraCoin.AddTransactionToPool(new Transaction("Shivaji", "Bajiprabhu", 10));
* mudraCoin.AddTransactionToPool(new Transaction("Tanaji", "Dadaji", 20));
* mudraCoin.AddTransactionToPool(new Transaction("Shahaji", "Yesaji", 30));
*
* Console.WriteLine("Starting the miner..!");
* mudraCoin.MinePendingTransactions("Manjhi-TheMiner");
*
* Console.WriteLine($"Balance of the 'Manjhi-TheMiner' is {mudraCoin.GetBalance("Manjhi-TheMiner")}");
*
* Console.WriteLine("Starting the miner..!");
* mudraCoin.MinePendingTransactions("Manjhi-TheMiner");
* Console.WriteLine($"Balance of the 'Manjhi-TheMiner' is {mudraCoin.GetBalance("Manjhi-TheMiner")}");
*
*/
#endregion
#region Signing transactions implementation
// Signing transactions implementation
var mudraCoin = new Blockchain();
var privateKey = "105c301c92f5d956ad577105e71aba4d29cf7af04cd47c648244dd8ad677381f";
//public key i.e. User's wallet address
var myMudraCoinWalletAddress = "7a89dec4cc7e0964ed4c5e517f1cfee7e4f145e8500f55fe0317f97e71b7ba5219a4215b1885ac547da87bd0155d02c9bbe0501d0670a4f481df2b42f2130c02";
var tx = new Transaction(myMudraCoinWalletAddress, "Bajiprabhu", 10);
//We are signing the transaction with user's private key so that this user is the only one who can spend the coins in this wallet
tx.SignTransaction(privateKey);
mudraCoin.AddTransactionToPool(tx);
Console.WriteLine("Starting the miner..!");
mudraCoin.MinePendingTransactions(myMudraCoinWalletAddress);
Console.WriteLine($"Balance of the 'Manjhi-TheMiner' is {mudraCoin.GetBalance(myMudraCoinWalletAddress)}");
//Console.WriteLine(JsonSerializer.Serialize(mudraCoin.Chain));
Console.WriteLine($"Is blockchain Valid :{mudraCoin.IsBlockchainValid()}");
Console.WriteLine("Tampering transaction in blockchain (•̀ᴗ•́ )");
//This tampering with transaction to change the amout will invalidate the transaction signeture
//resulting invalid transaction and bloack in out block chain
mudraCoin.Chain[1].Transactions[0].Amount = 1000;
Console.WriteLine("Transaction Tampered..! (•̀ᴗ•́ )");
Console.WriteLine($"Is blockchain Valid :{mudraCoin.IsBlockchainValid()}");
#endregion
}