VAR/BasicBlockChain
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Mining/Proof-Of-Work Rewards.

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Valeriano A.R.
2019-08-21 02:13:50 +02:00
parent 6f3149cf3e
commit d8bb52debd
3 changed files with 34 additions and 9 deletions
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20
BasicBlockChain/BlockChain.cs
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@@ -6,14 +6,17 @@ namespace BasicBlockChain
{
public class BlockChain
{
private List<Transaction> _pendingTransactions = new List<Transaction>();
public List<Block> Chain { get; } = new List<Block>();
public int Difficulty { get; set; } = 2;
public int Reward { get; set; } = 1_000_000;
public BlockChain(DateTime? genesisDate = null, int difficulty = 2)
public BlockChain(DateTime? genesisDate = null, int difficulty = 2, int reward = 1_000_000)
{
Block genesisBlock = new Block(genesisDate ?? DateTime.UtcNow, null, null);
genesisBlock.Mine(difficulty);
Difficulty = difficulty;
Reward = 1_000_000;
Chain.Add(genesisBlock);
}
@@ -25,6 +28,21 @@ namespace BasicBlockChain
Chain.Add(newBlock);
}
public void AddTransaction(Transaction transaction)
{
_pendingTransactions.Add(transaction);
}
public void ProcessPendingTransactions(DateTime date, string miner)
{
Block lastBlock = Chain.Last();
Block newBlock = new Block(date, lastBlock, _pendingTransactions);
newBlock.Transactions.Add(new Transaction(null, miner, Reward, date));
newBlock.Mine(Difficulty);
Chain.Add(newBlock);
_pendingTransactions.Clear();
}
public bool Verify()
{
for (int i = 1; i < Chain.Count; i++)

15
BasicBlockChain/Program.cs
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@@ -1,5 +1,4 @@
using System;
using System.Collections.Generic;
namespace BasicBlockChain
{
@@ -14,9 +13,12 @@ namespace BasicBlockChain
Console.WriteLine("#### Mining BlockChain with sample data");
var startTime = DateTime.UtcNow;
BlockChain nullCoin = new BlockChain(genesisDate: new DateTime(2000, 1, 1), difficulty: 2);
nullCoin.AddBlock(new DateTime(2000, 1, 2), new List<Transaction> { new Transaction("VAR", "NAM", 10_000_000) });
nullCoin.AddBlock(new DateTime(2000, 1, 3), new List<Transaction> { new Transaction("NAM", "VAR", 5_000_000) });
nullCoin.AddBlock(new DateTime(2000, 1, 4), new List<Transaction> { new Transaction("NAM", "VAR", 5_000_000) });
nullCoin.AddTransaction(new Transaction("VAR", "NAM", 10_000_000, new DateTime(2000, 1, 2)));
nullCoin.ProcessPendingTransactions(new DateTime(2000, 1, 2), "Kable");
nullCoin.AddTransaction(new Transaction("NAM", "VAR", 5_000_000, new DateTime(2000, 1, 3)));
nullCoin.ProcessPendingTransactions(new DateTime(2000, 1, 3), "Kable");
nullCoin.AddTransaction(new Transaction("NAM", "VAR", 5_000_000, new DateTime(2000, 1, 4)));
nullCoin.ProcessPendingTransactions(new DateTime(2000, 1, 4), "Kable");
Console.WriteLine(jsonWriter.Write(nullCoin));
var endTime = DateTime.UtcNow;
Console.WriteLine($"Duration: {endTime - startTime}");
@@ -27,18 +29,19 @@ namespace BasicBlockChain
// Show balance
Console.WriteLine("Balance of \"{0}\": {1}", "VAR", nullCoin.GetMicroCoinBalance("VAR"));
Console.WriteLine("Balance of \"{0}\": {1}", "NAM", nullCoin.GetMicroCoinBalance("NAM"));
Console.WriteLine("Balance of \"{0}\": {1}", "Kable", nullCoin.GetMicroCoinBalance("Kable"));
// Tamper with the data
Console.WriteLine();
Console.WriteLine("#### Tampering with the data");
nullCoin.Chain[1].Transactions.Clear();
nullCoin.Chain[1].Transactions.Add(new Transaction("VAR", "NAM", 1000_000_000));
nullCoin.Chain[1].Transactions[0].MicroCoinAmount = 1000_000_000;
Console.WriteLine(jsonWriter.Write(nullCoin));
// Verify
Console.WriteLine("BlockChain is Valid? {0}", nullCoin.Verify() ? "True" : "False");
Console.WriteLine("Balance of \"{0}\": {1}", "VAR", nullCoin.GetMicroCoinBalance("VAR"));
Console.WriteLine("Balance of \"{0}\": {1}", "NAM", nullCoin.GetMicroCoinBalance("NAM"));
Console.WriteLine("Balance of \"{0}\": {1}", "Kable", nullCoin.GetMicroCoinBalance("Kable"));
Console.Read();
}

8
BasicBlockChain/Transaction.cs
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@@ -1,16 +1,20 @@
namespace BasicBlockChain
using System;
namespace BasicBlockChain
{
public class Transaction
{
public string Sender { get; set; }
public string Receiver { get; set; }
public long MicroCoinAmount { get; set; }
public DateTime Date { get; set; }
public Transaction(string sender, string receiver, long microCoinAmount)
public Transaction(string sender, string receiver, long microCoinAmount, DateTime date)
{
Sender = sender;
Receiver = receiver;
MicroCoinAmount = microCoinAmount;
Date = date;
}
}
}