gistfile1.txt

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Text;
using System.Net;
using System.Threading;
using System.IO;
using System.Diagnostics;
using MonoMac.AppKit;
using System.Configuration;
using NBitcoin;
using NBitcoin.Protocol;
using NBitcoin.DataEncoders;
using NBitcoin.Protocol.Behaviors;

namespace ProgrammingBlockchain
{
	public class Chapter2
	{
		public Chapter2 ()
		{
		}
		public void Lesson1()
		{
			var blockr = new BlockrTransactionRepository();
			Transaction transaction = blockr.Get("e2a724193805814a7ce0c88dc68a5e3e06999ae9edde3a621c4ad1b9a620b2b4");
			Console.WriteLine(transaction.ToString());
		}
		public void Lesson2(BitcoinAddress myAddress, BitcoinSecret mySecret)
		{
			var blockr = new BlockrTransactionRepository ();
			Transaction fundingTransaction = blockr.Get ("e2a724193805814a7ce0c88dc68a5e3e06999ae9edde3a621c4ad1b9a620b2b4");
			Transaction pTransaction = new Transaction ();
	pTransaction.Inputs.Add (new TxIn () {
				PrevOut = new OutPoint (fundingTransaction.GetHash (), 1)
			});
			BitcoinAddress programmingBlockchainAddress = new BitcoinAddress("1KF8kUVHK42XzgcmJF4Lxz4wcL5WDL97PB");
			Console.WriteLine("Generating transaction on local.");
			pTransaction.Outputs.Add(new TxOut() {
				Value = Money.Coins(0.00059m),
				ScriptPubKey = myAddress.ScriptPubKey
			});

			pTransaction.Outputs.Add (new TxOut () {
				Value = Money.Coins (0.0004m), 
				ScriptPubKey = programmingBlockchainAddress.ScriptPubKey
			});
			//Feedback !
			var message = "Thanks from Tomoaki at Tokyo !";
			var bytes = Encoding.UTF8.GetBytes(message);
			pTransaction.Outputs.Add(new TxOut(){
				Value = Money.Coins(0.00005m), 
				ScriptPubKey = TxNullDataTemplate.Instance.GenerateScriptPubKey(bytes)
			});
			// signing part is last.
			pTransaction.Inputs[0].ScriptSig = myAddress.ScriptPubKey;
			pTransaction.Sign (mySecret, false);
			Console.WriteLine(pTransaction);
			// connect to the bitcoin node and propagate transaction
			var node = Node.ConnectToLocal(Network.Main);
//			using () {
//			node.VersionHandshake(); //Say hello
//			//Advertize your transaction (send just the hash)
//				node.SendMessage(new InvPayload(InventoryType.MSG_TX, pTransaction.GetHash()));
//			//Send it
//				node.SendMessage(new TxPayload(pTransaction));
//			Thread.Sleep(500); //Wait a bit
//			}
		}
		public void Lesson3()
		{
			// verify the ownership of the address.
			BitcoinAddress address = new BitcoinAddress("1KF8kUVHK42XzgcmJF4Lxz4wcL5WDL97PB");
			var msg = "Nicolas Dorier Book Funding Address";
			var sig = "H1jiXPzun3rXi0N9v9R5fAWrfEae9WPmlL5DJBj1eTStSvpKdRR8Io6/uT9tGH/3OnzG6ym5yytuWoA9a hkC3dQ=";
			Console.WriteLine(address.VerifyMessage(msg, sig));
		}
	}
}