45 lines
1.3 KiB
C#
45 lines
1.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace BasicBlockChain
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{
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public class BlockChain
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{
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public List<Block> Chain { get; } = new List<Block>();
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public int Difficulty { get; set; } = 2;
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public BlockChain(DateTime? genesisDate = null, int difficulty = 2)
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{
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Block genesisBlock = new Block(genesisDate ?? DateTime.UtcNow, null, "{}");
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genesisBlock.Mine(difficulty);
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Difficulty = difficulty;
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Chain.Add(genesisBlock);
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}
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public void AddData(DateTime date, string data)
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{
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Block lastBlock = Chain.Last();
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Block newBlock = new Block(date, lastBlock, data);
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newBlock.Mine(Difficulty);
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Chain.Add(newBlock);
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}
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public bool Verify()
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{
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for (int i = 1; i < Chain.Count; i++)
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{
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Block currentBlock = Chain[i];
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Block previousBlock = Chain[i - 1];
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string currentBlockHashRecalculated = currentBlock.CalculateHash();
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if (currentBlock.Hash != currentBlockHashRecalculated || currentBlock.PreviousHash != previousBlock.Hash)
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{
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return false;
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}
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}
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return true;
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}
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}
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}
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